Key information

Title
Power clamping tool or device, apparatus, and method used for retrieving wellbore production strings and control lines from wells
Application number
20230679
Case type
National
Status
05.05.2025 Patent meddelt (B1)
Filed
12.06.2023
Effective date
12.06.2023
Publicly available
13.12.2024
Next annual fee due
30.06.2027
Applicant
WELL EXPERTISE AS (NO)
Owner
WELL EXPERTISE AS (NO)
Inventor
Lars Solvang (NO)
Agent
HÅMSØ PATENTBYRÅ AS (NO)
Granted
05.05.2025
Patent number
348692
Expiry date
12.06.2043

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
A power clamping tool or device, and apparatus for and methods of retrieving a wellbore production string from a wellbore, are described. The power clamping tool or device has a structure comprising clamp sections which can accommodate a production pipe section in the clamping region between the clamp sections and at least one control line section between one of the clamp sections and an outer surface of the production pipe section, and produce a clamping action in the clamping region for clamping the tool or device onto the production pipe section and pressing the or each control line section against the outer surface of the production pipe section, and has actuation means for engaging the clamp sections to perform the clamping action, the actuation means being operable by applied hydraulic, electric, or pneumatic power.

Publications

B1A1
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Documents

 Expand Download files (21)
Date
 Date Doc. No. Process Case number In/Out Journal description To/from
 07.05.2025 09-01 Saksbehandling 20230679(348692) UT PT Registreringsbrev nasjonal patent (15) (PT20230679)
02.05.2025 08-01 Saksbehandling 20230679(348692) UT PT Varsel om betaling av første årsavgift (3317) (PT20230679) HÅMSØ PATENTBYRÅ AS
 21.02.2025 07-02 Saksbehandling 20230679 INN P30581NO00 Letter_NIPO HÅMSØ PATENTBYRÅ AS
 21.02.2025 07-01 Saksbehandling 20230679 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 17.02.2025 06-01 Saksbehandling 20230679 UT Intention to grant HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-08 Saksbehandling 20230679 INN P30581NO00 Translated claims HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-07 Saksbehandling 20230679 INN P30581NO00 Letter to Patentstyret HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-06 Saksbehandling 20230679 INN P30581NO00 Formal drawings HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-05 Saksbehandling 20230679 INN P30581NO00 Amended description_clean HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-04 Saksbehandling 20230679 INN P30581NO00 Amended claims_clean HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-03 Saksbehandling 20230679 INN P30581NO00 Additional sheets mark-up description HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-02 Saksbehandling 20230679 INN P30581NO00 Additional sheets mark-up claims HÅMSØ PATENTBYRÅ AS
 06.03.2024 05-01 Saksbehandling 20230679 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 12.01.2024 04-02 Saksbehandling 20230679 UT PT report 04:09:05
12.01.2024 04-01 Saksbehandling 20230679 UT Substantive examination HÅMSØ PATENTBYRÅ AS
 14.06.2023 03-01 Saksbehandling 20230679 UT Infobrev til oppfinner HÅMSØ PATENTBYRÅ AS
 13.06.2023 02-02 Saksbehandling 20230679 INN P30581NO00 signert generalfullmakt 1032796 HÅMSØ PATENTBYRÅ AS
 13.06.2023 02-01 Saksbehandling 20230679 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 12.06.2023 01-03 Saksbehandling 20230679 INN P30581NO00 Patent specification HÅMSØ PATENTBYRÅ AS
 12.06.2023 01-02 Saksbehandling 20230679 INN P30581NO00 Drawings_informal HÅMSØ PATENTBYRÅ AS
 12.06.2023 01-01 Saksbehandling 20230679 INN Søknadsskjema Patent HÅMSØ PATENTBYRÅ AS

Description, claims and drawings

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content. Description
The present invention relates the retrieval of wellbore production strings and control lines.In the oil and gas exploration and production industry, when pulling a production string from a wellbore the control line (which is fastened along the outside of the production tubing) can come loose from the production pipe. It can fall back into the hole. Tension may not be maintainable equally on the control line, thus the control line may not be extractable at the same rate as the production pipe. The control line may get wedged in the hole and prevent the production pipe from being pulled out. A loose line may otherwise cause problems of handling as the production pipe is removed. These problems may occur if the original fasteners for the control line fail, are damaged or dislodged upon withdrawing and pulling the production string out of the bore hole for dismantlement at the rig floor. The fasteners used for the control line to the production pipe may include downhole clamps means or lengths of wire. The downhole clamps may typically comprise rudimentary clamps which for example are screwed together with one or two screws. Upon dismantling, they need to be removed by hand, resulting in work at height above the drilling deck in order to unscrew them, or alternatively the production pipes need to be lowered to the drill floor, where the control line can be cut.At least one aim of the invention is to obviate or at least mitigate one or more drawbacks of prior art. The published patent application document WO2022/260531 describes a control line handling apparatus including a guide head arranged on and movable in relation to a base by an actuator arm.According to a first aspect of the present invention, there is provided a power clamping tool or device for use above rig floor in a process of retrieving a wellbore production string from a wellbore, the power clamping tool or device comprising: a structure comprising at least one clamp section configured to be locatable on one side of a clamping region and at least one clamp section configured to be locatable on another side of the clamping region, the clamp sections being so configured to accommodate the production pipe section in the clamping region in use between the clamp sections and the at least one control line section in use between one of the clamp sections and an outer surface of the production pipe section; the clamp sections being operable to produce a clamping action in the clamping region for clamping the tool or device onto the production pipe section and pressing the or each control line section against the outer surface of the production pipe section; and actuation means for engaging the clamp sections to perform the clamping action, the actuation means being operable by applied hydraulic, electric, or pneumatic power. The structure may be configured to define or form the production pipe clamping region for accepting a production pipe section and at least one control line section in the clamping region.Typically, the clamp sections have curved contact portions for contacting curved outer surface portions of the production pipe section.Typically, one or more of the clamp sections have at least one groove or deformable contact portion for accommodating the control line section between a portion of the clamp section and an outer surface of the production pipe section.Typically, the at least one clamp section on the one side of the clamping region is configured to be arranged opposite the at least one other clamp section on the other side of the clamping region, said at least one clamp section being coupled to said at least one other clamp section through at least one pivot coupling for allowing the pivoting of the one clamp section relative to the other clamp section to open the structure for facilitating location of the tool or device around the production pipe or close the structure for operating the clamp sections to perform the clamping action.More specifically, said at least one clamp section may be configured to extend along the one side of the pipe clamping region distally away from the pivot coupling toward a first distal portion, and said at least one other clamp section is configured to extend along the other side of the pipe clamping region distally away from the pivot coupling toward a second distal portion, and the actuator means is arranged to connect between the first and second distal portions to engage the clamp sections to produce the clamping effect.More specifically, the actuator means may be a linear actuator comprising first and second engager parts, one movable linearly relative to the other, the first engager part configured to be connected to the first distal portion and the second engager part configured to be connected to the second distal portion.Typically, the actuation means is lockable to the at least one clamp section of either the one or the other side of the production pipe clamping region for operating the clamp members to produce the clamping effect and unlockable for allowing the structure to be opened for removal of the clamp from the production pipe.Typically, the tool or device further comprises locking means for locking between an actuator engager part and a clamp section part.Typically, the locking means comprises a locking pin. More specifically, the locking pin may be operable to be inserted into or removed from locking position.In various examples, the at least one clamp section which is configured to be located on the one side of the clamping region and the at least one clamp section which is configured to be located on the other side of the clamping region are both configured to extend circumferentially at least partially around the clamping region and/or the production pipe section in use on opposite sides thereof. The structure may extend partially or fully around the clamping region and/or the production pipe section in use. The structure can define a ring structure around the production pipe clamping section and/or the production pipe in use.The clamping tool or device may further include one or more further features as set out anywhere herein.According to a second aspect of the invention, there is provided apparatus for facilitating in the process of retrieving a production string and at least one control line from a wellbore, the apparatus comprising: at least one pair of power clamping tools or devices, each in accordance with the first aspect of the invention, each being suspended on a flexible elongate member, and each being connected to power supply line; at least one supply unit coupled through the power supply line to the clamping devices for communicating any of hydraulic, electric, or pneumatic power through the power supply line to the clamping devices; and control means for operating or controlling any of: the clamping devices; the actuation means; locking means for locking or unlocking a part of the actuation means to or from a part of a clamp section; the supply unit; the flexible elongate member.The apparatus may include one or more further features as set out anywhere herein.According to a third aspect of the invention, there is provided a method of facilitating in the retrieval of a production string and at least one control line from a wellbore, the method comprising the steps of: providing at least a first clamping tool or device and a second clamping tool or device; pulling the production string upward, thereby locating a first production pipe section and a first control line section to extend above rig floor; applying the first clamping tool or device to the first production pipe section and the first control line section of part, clamping the first control line section to the first production pipe section, the first control line section being pressed against an outer surface of the production pipe section to clamp the first control line section in place with respect to the first production pipe section; pulling the production string upward with the first clamping tool or device applied thereto, thereby locating a second production pipe section and a second control line section to extend above rig floor; and applying the second clamping tool or device to the second production pipe section and the second control line section of part, clamping the second control line section to the second production pipe section, the second control line section being pressed against an outer surface of the production pipe section to clamp the second control line section in place with respect to the second production pipe section.Preferably, the first clamping tool or device is a power clamping tool or device in accordance with the first aspect of the invention. Preferably also, the second clamping tool or device is a power clamping tool or device in accordance with the first aspect of the invention. Typically, the method may further comprise any one or more of: removing the first clamping tool or device from the first production pipe section and first control line section; removing the first control line section from the first production pipe section; and disconnecting the first production pipe section from the production string.Typically, the method may further comprise any one or more of: pulling the production string upward with the second clamping tool or device applied thereto, thereby locating a third production pipe section and a third control line section to extend above rig floor; applying the removed first clamping tool or device to the third production pipe section and the third control line section of part, clamping the third control line section to the third production pipe section, the third control line section being pressed against an outer surface of the third production pipe section to clamp the third control line section in place with respect to the third production pipe section; removing the second clamping tool or device from the second production pipe section and second control line section; removing the second control line section from the second production pipe section; and disconnecting the second production pipe section from the production string.The method may further include one or more features or steps corresponding to features as set out in relation to the first or second aspects of the invention or anywhere else herein.Embodiments of the invention may be advantageous in various ways as will be apparent from throughout herein.There will now be described, by way of example only, embodiments of the invention with reference to the accompanying drawings, in which:Figure 1 is a top view of a power clamping tool in closed configuration in use on production pipe, according to an example;Figure 2 is a side view of the power clamping tool of Figure 1;Figure 3 is a part sectional side view of the locking device of the power clamping tool of Figure 1;Figure 4 is another side view of the power clamping tool of Figure 1; Figure 5 is a top view of power clamping tool of Figure 1 in open configuration;Figure 6 is a schematic view of apparatus including two power clamping devices in use in the process of retrieving of a production string from a wellbore, according to another example.Referring first to Figure 1 there is generally depicted a power clamping tool 100 which is applied to a wellbore production pipe 50 having a central longitudinal axis 55. The power clamping tool 100 has first and second clamp sections 11, 12 which extend at least partially around the production pipe 50. The production pipe 50 is located in a production pipe clamping region of the tool. The first clamp section 11 extends around one side of the production pipe 50 and the second clamp section 12 extends around the other, opposite side of the production pipe 50. The tool 100 also has actuation means in the form of a power actuator 20 which is arranged to engage the first and second clamp sections 11, 12.The first and second clamp sections 11, 12 are configured to grip the production pipe 50 and press the control line 60 against an outer surface of the production pipe 50. In this way, the tool is clamped onto the production pipe 50. The hydraulic actuator 20 in the configuration of Figure 1 is coupled to the first and second clamp sections 11, 12. The way in which the power actuator 20 in this example couples to the clamp sections 11, 12 will be described further below.The power actuator 20 is operable to engage the first and second clamp sections 11, 12 to produce or enhance components of force F, F’ applied to the production pipe 50 from the opposite sides of the production pipe 50 by the first and second clamp sections 11, 12. In this way, secure gripping of the production pipe 50 and clamping of the control line 60 to the production pipe 50 is facilitated. The control line 60 is pressed against the outer surface of the production pipe 50 so that it is fixedly held in place on the production pipe by the clamping tool 100 and so preventing inadvertent dislodgment of the control line from the production pipe 50 under the process of extracting and retrieving the production string from the wellbore. The power actuator 20 provides in effect tightening of the first and second clamp sections 11, 12 around the production pipe 50. Further details of the power clamping tool 100 can be appreciated with further reference additionally to Figures 2 to 5.The first clamp section 11 is hingeably coupled to the second clamp section 12 through a first, pivot coupling 18. The first, pivot coupling 18 comprises a coupling pin 19 about which the second clamp section 12 can pivot about pivot axis 15 relative to the first clamp section 11 for moving the clamp sections 11, 12 between an open configuration for facilitating location of the clamp sections 11, 12 around the production tubing 50 as seen in Figure 5 and a closed configuration where the clamp sections 11, 12 extend substantially around the production pipe 50 and are positioned for operating the clamps to perform clamping and gripping the pipe 50 as seen in Figure 1. The first clamp section 11 is movable relative to the second clamp section 12 as indicated by arrow A in Figure 5.The first and second clamp sections 11, 12 each comprises a curved body 13, 14 having a first, pivot engaging portion 13a, 14a and a second, actuator engaging portion 13b, 14b. The curved body 13, 14 extends away from the pivot coupling 18 in the direction circumferentially around the production pipe 50 toward the actuator engaging portion 13b, 14b. The first and second clamp sections 11, 12 thus can act as levers with force being applied to the actuator engaging portions 13b, 14b distally from the pivot coupling 18. The curvature of the body 13, 14 is approximately the same or of slightly tighter arc than that of the outer surface of the production tubing in the circumferential direction.The power actuator 20 in Figures 1 to 4 is a linear actuator that is coupled to the both the first clamp section 11 and the second clamp part 12 through respective couplings 28, 38.More specifically, the power actuator 20 has two main engager parts 21, 22. The first main engager part 21 is coupled to the first clamp section 11 through the coupling 28, and the second main engager part 22 is coupled to the second clamp section 12 through the coupling 38. In this example, the first engager part 21 comprises a hydraulic cylinder and the second main engager part 22 is part of a piston rod 24 extendable from the cylinder. Thus, the power actuator 20 is operable so that by hydraulic extension or retraction of the rod the second main engager part 22 is movable with respect to first engager part 21 by hydraulic fluid in the cylinder.The first main engager part 21 is fixedly mounted to the first clamp section 11. The coupling 28 includes a locking pin 29 with longitudinal axis 25 that locks the first main engager part 21 with respect to the first clamp section 11.The second main engager part 22 is locked to the second clamp section 12 in the coupling 38 by a locking pin 39 in locking position. The locking pin 39 is operable to be moved into and out of the locking position. In the example of Figures 1 to 5, a locking device 40 is provided that includes the locking pin 39 and a body 41 comprising a further hydraulic chamber 42. The body 41 is fixed to the second main engager part 22 so that it remains suitably positioned for locking independently of the position of the second main engager part 22 relative to the first main engager part 21. Upon application or removal of force to the locking bolt through fluid in the hydraulic chamber 42, the locking pin 39 can be operated to move into or out of the locking position.The locking pin 39 in the locking position is received in aligned holes 12h, 22h of the second clamp section 12 and the second main engager part 22 of the power actuator 20, respectively.In use, when the first and second clamp parts 11, 12 are in open configuration as seen in Figure 5, the parts 11, 12 can be fitted to the pipe 50 and the second clamp part 22 then pivoted about the pin 19 to start closing the parts around the pipe 50, the second clamp part 22 moving toward the closed configuration along arrow A. The second engager part 22 of the power actuator 20 is extended along arrow B somewhat with respect the first engager part 21 so that it is positioned suitably for aligning the hole 22h with the hole 12h of the second clamp part 12 at a position before the second clamp part 22 reaches its final position along the arc A. In practice, manual manipulation of the second clamp part 12 along the arc when fitting the tool around the production pipe 50 may only be possible to a certain point of closure. The second main engager part 22 of the actuator 20 can then conveniently be extended and connect to the second clamp part using the locking pin 39, and the actuator can then be operated to pull and move the second clamp part along the final portion of the arc, before then being operated to fully engage the production pipe 50 and tighten the grip of the parts around the pipe 50.Turning now to Figure 6, there is generally depicted at reference numeral 600 apparatus including two power clamping devices 200, 200’ both being configured in the same way as the the tool 100 as described above and being used in the process of retrieving a string of production pipe along with at least one control line from a well.In this retrieval process, the production string 500 is connected to an elevator 81 above the floor 82 of a platform or rig. The elevator 81 can travel up and down with respect to the floor 82. The elevator 81 is used for pulling the production string 500 upward from the hole 84. The floor 82 is typically the drill floor of a drilling platform or rig. A first production pipe section 50 is then disconnected from the part of the production string 500 that extends upward from the floor 82. The disconnected first production pipe section 50 is further disconnected from the elevator 81. The elevator 81 travels back toward the floor 82 and connects to the remainder part of the production string 500 that extends out of the hole 84 upward from the floor 82. The elevator 81 then further pulls the production string 500 (without previously disconnected pipe sections) upward from the hole 84. This process can then be repeated until the production string 500 is fully removed.Before the production string 500 is pulled upward, the first power clamping device 200 is connected to the first production pipe section 50 of the part of the production string 500 extending above floor level. The first power clamping device 200 clamps around the first production pipe section 50 and the corresponding first control line section 60, so that the control line 60 is firmly secured to the production pipe section 50. The elevator 81 pulls the production string 500 upward, with the first power clamping device 200 attached thereto, into the elevated position shown in Figure 6. The first power clamping device 200 continues to grip the first production pipe section 50 and the first control line section 60 so that the first control line section 60 is held in position.The second power clamping device 200’ is clamped around a second production pipe section 50’ that has newly been elevated above the floor level through the previous elevation of the production string 500. The second power clamping device 200’ is applied to the second production string section 50’ at a location near the floor, typically manually facilitated by rig floor personnel. The second power clamping device 200’ also clamps around the second production pipe section 50’ and the second control line section 60’, so that the second control line section 60’ is firmly secured to the second production pipe section 50’, as also seen in Figure 6.The production string 500 is temporarily supported in position by the slips 83 at the floor 82, and whilst so supported by the slips 83, the upper, first production pipe section 50 (with the first clamping device 200 connected thereto) can be detached from the lower, second production pipe section 50’ (with the second clamping device 200’ connected thereto). The first production pipe section 50 can be moved away with the clamping device 200 still connected to a suitable location for removal of the first control line section 60 and the first power clamping device 200.The production string 500 is again raised upwards. The first power clamping device 200 is then re-applied to a third, production pipe section which is raised above the floor level upon elevating the string and the second production pipe section 50’ along with the second power clamping device 200’ further upwards. The second production pipe section 50’ (with the second clamping device attached) can then be disconnected from the third production pipe section (not shown), moved away to a suitable location for removal of the second control line section 60’ and the second power clamping device 200’. This process with alternating use of the first and second power clamping devices 200, 200’ is then repeated as many times as needed.As can be further appreciated in Figure 6, the apparatus 600 further includes cables 202, 202’ to which the first and second power clamping devices 200, 200’ are connected. The cables 202, 202’ pass upward from the power clamping devices 200, 200’ to support block 203 arranged at height above the floor 82. The power clamping devices 200, 200’ hang from the support block 203 on the cables 202, 202’. The support block 203 can comprise any of for example pulleys, sheaves. Winches or other means may be operated to control the extent of payout of the respective cables 202, 202’. When applying the second power clamping device 200’ in the retrieval process, the weight of the clamping device is supported via the cable and through being suspended on the cable 202’ it can easily and conveniently be moved laterally to the desired location for application to the second production pipe section 50’.The apparatus 600 also includes a hydraulic fluid supply 210 and hydraulic lines in the form of hoses 205, 205’ each connecting fluid communicatively between the hydraulic fluid supply 210 and the hydraulic cylinder of the power actuator 20 of each clamping device 200, 200’. The apparatus 600 also includes a control unit 214 for controlling and operating the power actuator 20 of each power clamping device 200, 200’. The hoses are passed over a support device 206 arranged at height above the floor 82.In the process discussed above for example, upon positioning the clamping device 200’ in correct position for application to the second production pipe section 50’, the control unit 214 is operated to activate and hydraulically control the power actuator 20 as needed. Once the holes 12h, 22h of second main engager part 22 and the clamp part 12 are aligned and the parts 12, 22 are locked, the first and second clamp parts 11, 12 are thus engaged to clamp the second control line section 60’ firmly to the second production pipe section 50’.Personnel on the rig floor in some examples operate the control unit 210 remotely, e.g. through a mobile device or other control device, for example as soon as the clamping device 200, 200’ has been positioned appropriately. The control unit 214 and supply 210 can also be used to operate the locking pin 39 into our out of locking position through hydraulic communication with the hydraulic chamber 42.Various modifications and improvements may be made without departing from the scope of the invention herein described. It can be appreciated for example that the power actuator in other examples instead of being a hydraulic actuator is an electrical actuator or a pneumatic actuator. The electric or pneumatic actuator has engager parts which are movable one relative to another and connectable to the clamp sections in the corresponding way as described for the hydraulic actuator. The actuator can also in other variants of the clamping device be replaced by a manual engager means, such as a manually operable ratchet mechanism. The actuation means can be a motorized rack and pinion device or any suitable device to engage the first and second clamp parts to perform the clamping action.Other ways of coupling or locking the actuation means to the clamp parts are also possible. In examples using the locking pin, the locking pin is moved into and out of locking position not by actuation of hydraulic, electric or pneumatic power, but rather by pulling a rope connected to the locking pin. The locking pin in open position can be retained in a retainment body.Furthermore, instead of two clamp sections such as the first and second clamp sections 11, 12 described above in the drawings, the clamping device in other examples has three or more clamp sections which are configured to at least partially extend around the production pipe. Multiple clamp sections together in some such examples substantially enclose around the production pipe section. Adjacent clamp sections in some such examples are coupled to each other, e.g. hingably or pivotingly, or are otherwise arranged to allow fitting around the production pipe and engagement so as to grip onto and clamp the control line to the pipe.Whilst the first and second clamp sections in certain examples above are coupled by a pivot pin, other examples clamp sections are coupled through an intermediate coupling body and the first and second clamp sections can be separately coupled through separate pivot couplings to the intermediate body, so that the intermediate body, the first clamp section and the second clamp section form a coupled structure which is configured to at least partially extend around the production pipe. Other rotational joints than pivots are contemplated, for example a flexible structure or section of material in some examples can provide for one part of the structure to be opened sufficiently relative to another for positioning the clamp sections with respect to the production pipe. Other joints can be used for coupling between clamp sections. Such joints can potentially be rotational or non-rotational joints. One example is a sliding joint. Indeed, although the first and second clamp sections are described as coupled, they may be decoupled for example by suitable configuration of the coupling, for example to facilitate removal from the production pipe or other purpose. Being coupled can however also include that first and second clamp sections are sections of a one-part structure.It can be appreciated that although one control line section is seen in drawings, that of course several control line sections may also be clamped simultaneously by the clamp sections against the pipe.
Claims
CLAIMS:1. A power clamping tool (100) or device (200, 200’) for use above rig floor 82 in the process of retrieving a wellbore production string (500) from a wellbore, the power clamping tool or device comprising:a structure comprising at least one clamp section (11) configured to be locatable on one side of a clamping region and at least one clamp section (12) configured to be locatable on another side of the clamping region;characterized bythe clamp sections (11, 12) being so configured to accommodate a production pipe section (50, 50’) in the clamping region in use between the clamp sections and at least one control line section (60, 60’) in use between one of the clamp sections and an outer surface of the production pipe section;the clamp sections (11, 12) being operable to produce a clamping action in the clamping region for clamping the tool or device onto the production pipe section and pressing the or each control line section against the outer surface of the production pipe section; andthe power clamping tool or device further comprising actuation means (20) for engaging the clamp sections to perform the clamping action, the actuation means being operable by applied hydraulic, electric, or pneumatic power.2. A power clamping tool or device as claimed in claim 1, wherein the clamp sections have curved contact portions for contacting curved outer surface portions of the production pipe section.3. A power clamping tool or devices as claimed in claim 1 or claim 2, wherein one or more of the clamp sections have at least one groove or deformable contact portion for accommodating the control line section between a portion of the clamp section and an outer surface of the production pipe section.4. A power clamping tool or device as claimed in any preceding claim, wherein the at least one clamp section (11) on the one side of the clamping region is configured to be arranged opposite the at least one other clamp section (12) on the other side of the clamping region, said at least one clamp section being coupled to said at least one other clamp section through at least one pivot coupling (18) for allowing the pivoting of the one clamp section (11) relative to the other clamp section (12) to open the structure for facilitating location of the tool or device around the production pipe or close the structure for operating the clamp sections to perform the clamping action.5. A power clamping tool or device as claimed in claim 4, wherein said at least one clamp section is configured to extend along the one side of the pipe clamping region distally away from the pivot coupling toward a first distal portion, and said at least one other clamp section is configured to extend along the other side of the pipe clamping region distally away from the pivot coupling toward a second distal portion, and the actuator means is arranged to connect between the first and second distal portions to engage the clamp sections to produce the clamping effect.6. A power clamping tool or device as claimed in claim 5, wherein the actuator means (20) is a linear actuator comprising first and second engager parts (21, 22), one movable linearly relative to the other, the first engager part (21) configured to be connected to the first distal portion and the second engager part (22) configured to be connected to the second distal portion.7. A power clamping tool or device as claimed in any preceding claim, wherein the actuation means is lockable to the at least one clamp section of either the one or the other side of the production pipe clamping region for operating the clamp sections to produce the clamping effect and unlockable for allowing the structure to be opened for removal of the clamp from the production pipe.8. A power clamping tool or device as claimed in any preceding claim, further comprising locking means (40) for locking between an actuator engager part (22) and a clamp section part (12).9. A power clamping tool or device as claimed in claim 8, wherein the locking means comprises a locking pin (39).10. A power clamping tool or device as claimed in claim 9, wherein the locking pin is operable to be inserted into or removed from locking position.11. Apparatus (600) for facilitating in the process of retrieving a production string (500) and at least one control line (60) from a wellbore, the apparatus comprising:at least one pair of power clamping tools (100) or devices (200, 200’), each as claimed in any preceding claim, each being suspended on a flexible elongate member (202, 202’), and each being connected to a power supply line (205, 205’);at least one supply unit (210) coupled through the power supply line to the clamping tools (100) or devices (200, 200’) for communicating any of hydraulic, electric, or pneumatic power through the power supply line to the clamping tools or devices; andcontrol means (214) for operating or controlling any of: the clamping tools or devices; the actuation means (20); locking means (40) for locking or unlocking a part (22) of the actuation means to or from a part of a clamp section (12); the supply unit (210); the flexible elongate member (205, 205’).12. A method of facilitating in the retrieval of a production string (500) and at least one control line (60, 60’) from a wellbore, the method comprising the steps of:providing at least a first clamping tool (100) or device (200) and a second clamping tool or device (200’);pulling the production string (500) upward, thereby locating a first production pipe section (50) and a first control line section (60) to extend above rig floor (82);applying the first clamping tool (100) or device (200) to the first production pipe section (50) and the first control line section (60), clamping the first control line section to the first production pipe section, the first control line section being pressed against an outer surface of the first production pipe section to clamp the first control line section in place with respect to the first production pipe section;pulling the production string (500) upward with the first clamping tool (100) or device (200) applied thereto, thereby locating a second production pipe section (50’) and a second control line section (60’) to extend above rig floor (82); andapplying the second clamping tool or device (200’) to the second production pipe section (50’) and the second control line section (60’), clamping the second control line section to the second production pipe section, the second control line section being pressed against an outer surface of the second production pipe section to clamp the second control line section in place with respect to the second production pipe section.13. A method as claimed in claim 12, wherein the first clamping tool or device is a power clamping tool or device as claimed in any of claims 1 to 10, and the second clamping tool or device is a power clamping tool or device as claimed in any of claims 1 to 10.14. A method as claimed in claim 12 or 13, which further comprises:removing the first clamping tool (100) or device (200) from the first production pipe section (50) and first control line section (60);removing the first control line section (60) from the first production pipe section (50); anddisconnecting the first production pipe section (50) from the production string (500).15. A method as claimed in claim 14, which further comprises:pulling the production string (500) upward with the second clamping tool or device (200’) applied thereto, thereby locating a third production pipe section and a third control line section to extend above rig floor;applying the removed first clamping tool (100) or device (200) to the third production pipe section and the third control line section, clamping the third control line section to the third production pipe section, the third control line section being pressed against an outer surface of the third production pipe section to clamp the third control line section in place with respect to the third production pipe section;removing the second clamping tool or device (200’) from the second production pipe section (50’) and second control line section (60’);removing the second control line section (60’) from the second production pipe section (50’); anddisconnecting the second production pipe section (50’) from the production string (500).PATENTKRAV:1. Kraftklemmeverktøy (100) eller -anordning (200, 200’) for bruk over riggdekk (82) i prosessen med å trekke ut en brønnhullsproduksjonsstreng (500) fra et brønnhull, kraftklemmeverktøyet eller -anordningen omfatter:en struktur som omfatter minst én klemmeseksjon (11) konfigurert til å kunne plasseres på én side av et klemområde og minst én klemmeseksjon (12) konfigurert til å kunne plasseres på en annen side av klemområdet;karakterisert ved atklemmeseksjonene (11, 12) er konfigurert slik at de kan romme en produksjonsrørseksjon (50, 50’) i klemområdet mellom klemmeseksjonene i bruk, og minst én kontrolledningsseksjon (60, 60’), i bruk, mellom én av klemmeseksjonene og en ytre overflate av produksjonsrørseksjonen;klemmeseksjonene (11, 12) kan betjenes til å frembringe en klemhandling i klemområdet for å klemme verktøyet eller anordningen på produksjonsrørseksjonen og presse den ene eller hver kontrolledningsseksjon(en) mot den ytre overflaten av produksjonsrørseksjonen; ogkraftklemmeverktøyet eller -anordningen videre omfatter aktiveringsmidler (20) for å kople inn klemmeseksjonene for å utføre klemhandlingen, aktiveringsmidlene kan styres ved påført hydraulisk, elektrisk eller pneumatisk kraft.2. Kraftklemmeverktøy eller -anordning som angitt i krav 1, hvori klemmeseksjonene har krumme kontaktpartier for kontakt med krummede ytre overflatepartier av produksjonsrørseksjonen.3. Kraftklemmeverktøy eller -anordning som angitt i krav 1 eller krav 2, hvori én eller flere av klemmeseksjonene har minst ett spor eller deformerbart kontaktparti for å romme kontrolledningsseksjonen mellom et parti av klemmeseksjonen og en ytre overflate av produksjonsrørseksjonen.4. Kraftklemmeverktøy eller -anordning som angitt i hvilket som helst foregående krav, hvori den minst ene klemmeseksjonen (11) på den ene siden av klemområdet er konfigurert til å anordnes motstående til den minst ene andre klemmeseksjonen (12) på den andre siden av klemområdet, nevnte minst ene klemmeseksjon kan koples til nevnte minst ene andre klemmeseksjon gjennom minst én dreiekopling (18) for å tillate dreiningen av den ene klemmeseksjonen (11) i forhold til den andre klemmeseksjonen (12) for å åpne strukturen og tilrettelegge for plassering av verktøyet eller anordningen rundt produksjonsrøret eller lukke strukturen for å styre klemmeseksjonene til å utføre klemhandlingen.5. Kraftklemmeverktøy eller -anordning som angitt i krav 4, hvori nevnte minst ene klemmeseksjon er konfigurert til å strekke seg langs den ene siden av rørklemmeområdet distalt bort fra dreiekoplingen mot et første distalt parti, og nevnte minst ene andre klemmeseksjon er konfigurert til å strekke seg langs den andre siden av rørklemmeområdet distalt bort fra dreiekoplingen mot et andre distalt parti, og aktiveringsmiddelet er anordnet til å koples mellom det første og andre distale partiet for å kople inn klemmeseksjonene for å skape klemeffekten.6. Kraftklemmeverktøy eller -anordning som angitt i krav 5, hvori aktiveringsmidlene (20) er en lineær aktuator som omfatter første og andre innkoplingsdeler (21, 22), hvor den ene er lineært bevegelig i forhold til den andre, den første innkoplingsdelen (21) er konfigurert til å koples til det første distale partiet og den andre innkoplingsdelen (22) er konfigurert til å koples til det andre distale partiet.7. Kraftklemmeverktøy eller -anordning som angitt i hvilket som helst foregående krav, hvori aktiveringsmidlene er låsbare til den minst ene klemmeseksjonen til enten den ene eller den andre siden av produksjonsrørklemområdet for å styre klemmeseksjonene til å skape klemmeffekten, og opplåsbare for å tillate strukturen å åpnes for fjerning av klemmen fra produksjonsrøret.8. Kraftklemmeverktøy eller -anordning som angitt i hvilket som helst foregående krav, videre omfattende låsemidler (40) for låsing mellom en aktuatorinnkoplingsdel (22) og en klemmeseksjonsdel (12).9. Kraftklemmeverktøy eller -anordning som angitt i krav 8, hvori låsemidlene omfatter en låsepinne (39).10. Kraftklemmeverktøy eller -anordning som angitt i krav 9, hvori låsepinnen kan betjenes til å settes inn i eller fjernes fra låsestilling.11. Apparat (600) for å lette prosessen med å trekke ut en produksjonsstreng (500) og minst én kontrolledning (60) fra et brønnhull, apparatet omfatter:minst ett par kraftklemmeverktøy (100) eller -anordninger (200, 200’), hver(t) som angitt i hvilket som helst foregående krav, hver(t) er avhengt på et fleksibelt, avlangt element (202, 202’), og hver(t) er koplet til en kraftforsyningsledning (205, 205’);minst én forsyningsenhet (210) koplet via kraftforsyningsledningen til klemmeverktøyene (100) eller -anordningene (200, 200’) for overføring av hvilken som helst av hydraulisk, elektrisk eller pneumatisk kraft gjennom kraftforsyningsledningen til klemmeverktøyene eller -anordningene; og kontrollmiddel (214) for å betjene eller styre enhver av: klemmeverktøyene eller -anordningene; aktiveringsmidlene (20); låsemidlene (40) for å låse eller låse opp en del (22) av aktiveringsmidlene til eller fra en del av en klemmeseksjon (12); forsyningsenheten (210); det fleksible, avlange elementet (205, 205’).12. Fremgangsmåte for å lette prosessen med å trekke ut en produksjonsstreng (500) og minst én kontrolledning (60, 60’) fra et brønnhull, fremgangsmåten omfatter trinnene:å tilveiebringe minst et første klemmeverktøy (100) eller -anordning (200) og et andre klemmeverktøy eller -anordning (200’);å trekke produksjonsstrengen (500) oppover, for derved å plassere en første produksjonsrørseksjon (50) og en første kontrolledningsseksjon (60) slik at de strekker seg over riggdekk (82);å påføre det første klemmeverktøyet (100) eller -anordningen (200) på den første produksjonsrørseksjonen (50) og den første kontrolledningsseksjonen (60), klemme den første kontrolledningsseksjonen til den første produksjonsrørseksjonen, idet den første kontrolledningsseksjonen er presset mot en ytre overflate av den første produksjonsrørseksjonen for å klemme den første kontrolledningsseksjonen på plass i forhold til den første produksjonsrørseksjonen;å trekke produksjonsstrengen (500) oppover med det første klemmeverktøyet (100) eller -anordningen påført dertil, for derved å plassere en andre produksjonsrørseksjon (50’) og en andre kontrolledningsseksjon (60’) slik at de strekker seg over riggdekk (82); ogå påføre det andre klemmeverktøyet eller -anordningen (200’) på den andre produksjonsrørseksjonen (50’) og den andre kontrolledningsseksjonen (60’), klemme den andre kontrolledningsseksjonen til den andre produksjonsrørseksjonen, idet den andre kontrolledningsseksjonen er presset mot en ytre overflate av den andre produksjonsrørseksjonen for å klemme den andre kontrolledningsseksjonen på plass i forhold til den andre produksjonsrørseksjonen.13. Fremgangsmåte som angitt i krav 12, hvori det første klemmeverktøyet eller -anordningen er et kraftklemmeverktøy eller -anordning som angitt i hvilket som helst av kravene 1 til 10, og det andre klemmeverktøyet eller -anordningen er et kraftklemmeverktøy eller -anordning som angitt i hvilket som helst av kravene 1 til 10.14. Fremgangsmåte som angitt i krav 12 eller 13, som videre omfatter:å fjerne det første klemmeverktøyet (100) eller -anordningen (200) fra den første produksjonsrørseksjonen (50) og den første kontrolledningsseksjonen (60); å fjerne den første kontrolledningsseksjonen (60) fra den første produksjonsrørseksjonen (50); ogå kople den første produksjonsrørseksjonen (50) fra produksjonsstrengen (500).15. Fremgangsmåte som angitt i krav 14, som videre omfatter:å trekke produksjonsstrengen (500) oppover med det andre klemmeverktøyet eller -anordningen (200’) påført derpå, for derved å plassere en tredje produksjonsrørseksjon og en tredje kontrolledningsseksjon slik at de strekker seg over riggdekk;å påføre det fjernede første klemmeverktøyet (100) eller -anordningen (200) på den tredje produksjonsrørseksjonen og den tredje kontrolledningsseksjonen, klemme den tredje kontrolledningsseksjonen til den tredje produksjonsrørseksjonen, idet den tredje kontrolledningsseksjonen presses mot en ytre overflate av den tredje produksjonsrørseksjonen for å klemme den tredje kontrolledningsseksjonen på plass i forhold til den tredje produksjonsrørseksjonen;å fjerne det andre klemmeverktøyet eller -anordningen (200’) fra den andre produksjonsrørseksjonen (50’) og den andre kontrolledningsseksjonen (60’);å fjerne den andre kontrolledningsseksjonen (60’) fra den andre produksjonsrørseksjonen (50’); ogå kople den andre produksjonsrørseksjonen (50’) fra produksjonsstrengen (500).
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Patent classes

IPC classesE21B 17/02E21B 19/22CPC classesE21B 17/026E21B 19/22

Citations

WO 2022/260531 A1 (A1)US 2021/0355758 A1 (A1)US 7861982 B1 (B1)

Applicants, owners and inventors

Owners
WELL EXPERTISE AS
Harestadveien 77 4072 RANDABERG NO (RANDABERG Municipality, Rogaland county)Org. number: 815906012Inventors
Lars Solvang
Skjeneholen 2b 4313 SANDNES NO (SANDNES Municipality, Rogaland county)

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HÅMSØ PATENTBYRÅ AS
HÅMSØ PATENTBYRÅ AS

Org. number: 918752900

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