Key information

Title
Device and method for cement handling
Application number
20240235
Case type
National
Status
22.06.2026 Patent meddelt (B1)
Filed
12.03.2024
Effective date
12.03.2024
Publicly available
15.09.2025
Next annual fee due
31.03.2027
Applicant
Brigt Lode Teknologi AS (NO)
Owner
Brigt Lode Teknologi AS (NO)
Inventor
Brigt Lode (NO)
Agent
HÅMSØ PATENTBYRÅ AS (NO)
Granted
22.06.2026
Patent number
349918
Expiry date
12.03.2044

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
There is disclosed a device for cementing an annulus in a subsea wellbore, the device comprising: - an inlet for a fluidised plugging material; - one or more outlets for the fluidised plugging material, the one or more outlets being adapted to extend into an anulus between a tubular and a wall of a wellbore surrounding the tubular in the subsea well; - a connector for connecting the device to an upper portion of the tubular; - an input member for receiving power to operate the connector between an idle position, in which the device is not connected to the tubular, and an active position in which the device is connected to the tubular. There is also disclosed a system including system a device as well as a method for operating the system.

Publications

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Documents

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Date
 Date Doc. No. Process Case number In/Out Journal description To/from
 30.06.2026 08-01 Saksbehandling 20240235(349918) UT PT Registreringsbrev nasjonal patent (15) (PT20240235)
14.04.2026 07-01 Saksbehandling 20240235 UT Intention to grant HÅMSØ PATENTBYRÅ AS
 02.02.2026 06-01 Saksbehandling 20240235 UT PT Varsel om betaling av første årsavgift (3317) (PT20240235) HÅMSØ PATENTBYRÅ AS
 12.01.2026 05-05 Saksbehandling 20240235 INN P31275NO00_response letter HÅMSØ PATENTBYRÅ AS
 12.01.2026 05-04 Saksbehandling 20240235 INN P31275NO00_norske krav HÅMSØ PATENTBYRÅ AS
 12.01.2026 05-03 Saksbehandling 20240235 INN P31275NO00_description and claims_MU HÅMSØ PATENTBYRÅ AS
 12.01.2026 05-02 Saksbehandling 20240235 INN P31275NO00_description and claims_clean HÅMSØ PATENTBYRÅ AS
 12.01.2026 05-01 Saksbehandling 20240235 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 30.10.2025 04-01 Saksbehandling 20240235 UT Substantive examination HÅMSØ PATENTBYRÅ AS
 18.03.2025 03-04 Saksbehandling 20240235 INN P31275NO00_Response_Office_Action HÅMSØ PATENTBYRÅ AS
 18.03.2025 03-03 Saksbehandling 20240235 INN P31275NO00_ amended claims_mark-up HÅMSØ PATENTBYRÅ AS
 18.03.2025 03-02 Saksbehandling 20240235 INN P31275NO00_ amended claims_clean HÅMSØ PATENTBYRÅ AS
 18.03.2025 03-01 Saksbehandling 20240235 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 30.09.2024 02-02 Saksbehandling 20240235 UT PT report 08:56:53
30.09.2024 02-01 Saksbehandling 20240235 UT Substantive examination HÅMSØ PATENTBYRÅ AS
 12.03.2024 01-04 Saksbehandling 20240235 INN P31275NO00_figs 1075600 HÅMSØ PATENTBYRÅ AS
 12.03.2024 01-03 Saksbehandling 20240235 INN P31275NO00_description and claims_prio HÅMSØ PATENTBYRÅ AS
 12.03.2024 01-02 Saksbehandling 20240235 INN P31275NO00 Signert generalfullmakt 1075643 HÅMSØ PATENTBYRÅ AS
 12.03.2024 01-01 Saksbehandling 20240235 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
3499181DEVICE AND METHOD FOR CEMENT HANDLINGThe present invention relates to a device for cementing an annulus in a subsea wellbore as well as to a system including such a device with a remotely operable subsea vehicle (ROV) and a tubular extending into a subsea wellbore. The invention also relates to a 5 method for operating the system.When establishing a subsea well, a concentric arrangement of tubulars extends from the seabed down into the formation. The conductor, which is the outermost and largestdiameter pipe, provides the initial structural foundation for the well. From this conductor, the surface casing and smaller-diameter pipes are hung. 10 Before installing the conductor, a large-diameter hole (often 36 inches) is drilled into the seabed. Subsequently, the conductor is landed in this drilled hole. Typically, the conductor has a diameter of 30 or 32 inches. To ensure the well’s structural integrity—both for mechanical stability and pressure integrity—the conductor must be cemented into the hole. 15 Cement is usually pushed centrally down through the conductor, around the “shoe” at the bottom, and filling the annulus between the outer diameter of the conductor and the initially drilled hole from below. The goal is for the cement to reach all the way to the top of the conductor. The amount of cement needed is typically determined through prior calculations. 20 However, cement shortfall is a common occurrence. This can happen due to the hydrostatic pressure of the cement slurry on exposed formations, potentially breaking down a weak formation zone. Detecting such a shortfall subsea is challenging and may necessitate a compromise in the well’s structural integrity. 3499182The invention has for its object to remedy or to reduce at least one of the drawbacks of the prior art, or at least provide a useful alternative to prior art.The object is achieved through features, which are specified in the description below and 5 in the claims that follow.The invention is defined by the independent patent claims. The dependent claims define advantageous embodiments of the invention.In a first aspect the invention relates to a device for cementing an annulus in a subsea well, the device comprising: 10 - an inlet for a fluidised plugging material;- one or more outlets for the fluidised plugging material, the one or more outlets being adapted to extend into an anulus between a tubular and a wall of a wellbore surrounding the tubular in the subsea well;- a connector for connecting the device to an upper portion of the tubular; 15 - an input member for receiving power to operate the connector between an idle position, in which the device is not connected to the tubular, and an active position in which the device is connected to the tubular.The fluidised plugging material may typically be cement. However, in other embodiments it may be resin-based plugging materials, quick clay, loose mass or other materials that 20 may be used as alternatives to cement.In one embodiment, the connector may be a clamp operable between an open position in which it is not connected to the tubular and a closed position around the tubular. The clamp may e.g. include two portions adapted to close around the tubular such as by pivoting. The two portions may or may not be substantially the same size and cover equal 25 portions of the circumference of the tubular. In one embodiment, the connector may include three clamp portion, each of the clamp portions substantially forming a circular arc, where the first and second portions are pivotally connected to a third, stationary portion. In one embodiment, the third, stationary portion may cover approximately 180° of 3499183the circumference while the first and second clamp portions cover approximately 90° each.In alternative embodiments, the connector may include a bracket or a claw connecting to the upper edge of the tubular. 5 In one embodiment the input member may be a hydraulic input member adapted to receive a hydraulic fluid for operating the connector between the idle and active positions. In one embodiment, the input member may be a hydraulic receptable / (female) connector for receiving a hydraulic stab (male connector). The hydraulic receptacle may include a plurality of hydraulic inlets/ports to operate a plurality of different functions of 10 the connector. Hydraulic fluids may flow into and out from each of the inlets in the hydraulic receptacle.In one embodiment the hydraulic receptacle may include six or more ports to operate three or more hydraulic cylinders in both directions, each cylinder being connected to a plus port for extending a stroke of a piston rod and a minus port for retracting the piston 15 rod. As will be explained in the following, first and second cylinders may be used to fold the first and second clamp portions around a tubular, while a third cylinder may be used to lock/tighten the first and second clamp portions firmly together. An advantage of using a hydraulic connection with multiple inlets/ports, is that one connection may be sufficient to perform several functions on the device, such as the hydraulic functions exemplified 20 above. As such, it may be possible to install the device to a tubular by means of a single ROV, as will be explained below.However, in an alternative embodiment, the input member may be mechanical input member, such as an input member adapted to connect to a torque tool on a ROV for operation of the connector. 25 In one embodiment the direction of the inlet may be provided substantially perpendicularly to direction of the one or more outlets. In a position of use, the outlets may extend down into an annulus surrounding the tubular. Arranging the inlet to be perpendicular to the outlets may therefore contribute to easy access to the inlet for connection to a hose 3499184or similar. The inlet may also be angled otherwise relative the outlets, such as between 90 and 180°.In one embodiment, the device may comprise two or more outlets, where the two or more outlets may be arranged with a distance therebetween along a substantially circular 5 arc. Providing two or more outlets with a distance between them, may lead to a more even distribution of cement, or another fluidised plugging material, in the annulus. Arranging the outlets along a circular arc may provide a better fit in the annulus. In certain embodiments, there may be two, three, four, five, six or even more outlets arranged with a distance between them along said circular arc. The two or more outlets may also be 10 provided at different depths in the annulus, e.g. by having outlet pipes with different lengths. In one embodiment outlet pipes may be arranged symmetrically around a longer pipe in the middle and with gradually shorter pipes from the middle towards the ends of the arc.In one embodiment the arc may define a segment of 60 to 270°, preferably 90-180° and 15 most preferably around 120°. By leaving a segment not covered by the circular arc of outlets, room is left for displacement/swapping of water, which may also be important for an even distribution of cement or another fluidised plugging material. Experiments have shown that a segment of around 120° with four to six, preferably five outlets evenly spaced and optionally with a longer pipe in the middle, provides an optimal distribution of 20 cement or other fluidised plugging materials into the annulus.In one embodiment the inlet may be connected to a guiding structure for guiding a free end of a hose into connection with the inlet. The guiding structure may e.g. a funnel, simplifying connection of the of the hose to the inlet, such as by an ROV.In one embodiment, the device may include an ROV handle. The ROV handle may be a 25 standardised handle to be gripped by a manipulator of an ROV and/or another structure enabling an ROV to connect to and carry the device in water.In a second aspect, the invention relates to a system for cementing an annulus in a subsea wellbore, the system including a device according to the first aspect of the invention and 3499185further comprising:- a tubular in the subsea wellbore;- the one or more outlets of the device being positioned in an annulus formed between the tubular and the subsea wellbore 5 - an ROV for carrying the device and for connecting an output member to the input member on the device for powering and operating the connector.The output member may be a part of the ROV or the ROV may carry the output member to connect the device to a separate power source. In one embodiment, the ROV may be provided with a hydraulic power unit and a hydraulic stab to connect to the input mem- 10 ber receptacle on the device, or the ROV may be provided with a battery (or hydraulic power unit) and an output member in the form of a torque tool. Alternatively, the ROV may assist in connecting the input member on the device to a separate power source and output member. This may e.g. be a hydraulic power unit provided subsea or topside. In one embodiment the tubular may be a conductor. However, it may also be a surface 15 casing, or another tubular placed in a hole in the seabed. The device will typically connect to a stick-up of the tubular above the seabed. The device as such, when connected to the tubular, may be suspended freely radially outwardly from the tubular, or if may be resting on the seabed or a supporting structure provided on the seabed around the stick-up, such as a mud mat. 20 In a third aspect, the invention relates to method for operating a system according to the second aspect of the invention, the method including the steps of:- operating the ROV to connect the device to an upper portion of the tubular,- operating the ROV to connect the outlet of a hose to the inlet of the device; and - pumping a fluidised plugging material through the hose, to the inlet and out through the 25 one or more outlets into the annulus around the tubular.The source of the fluidised plugging material may typically be provided topside on a floating vessel which connects to the device through a hose. The device according to the invention, enables cementing wellbore annuli without needing a drilling rig, though use of a drilling rig is not excluded. 3499186The device and system according to the invention may be used to top up an already cemented annulus where there has been a shortfall, or the device and system may be used to cement a not previously cemented annulus.By “upper portion”, is meant to a portion sticking up above the seabed, though it will be 5 understood that the one or more outlets may extend downwardly to a position in the annulus below the seabed. Alternatively, the outlets may open up into the annulus from immediately above the seabed.In one embodiment, the method may, after pumping of fluidised plugging material, further include the steps of: 10 - disconnecting the hose from the device; and- removing the device from the tubular.Alternatively, the device may be removed from the tubular with the hose still connected to it. 15 In the following is described an example of a preferred embodiment illustrated in the accompanying drawings, wherein:Fig.1 shows a device according to the present invention in a first perspective view;Fig.2 shows a device according to the present invention in a second perspective 20 view;Fig.3 shows, in a first perspective view, a device according to the present invention connected to a tubular;Fig.4 shows, in a second perspective view, a device according to the present invention connected to a tubular; 25 Fig.5 shows, in a perspective view, a device according to the present invention in an open position; 3499187Fig.6 shows the device from Fig.5 in a partly closed position; andFig.7 shows the device from Figs.5 and 6 in a closed position.In the following, reference numeral 1 will be used to denote an exemplary device accord- 5 ing to the invention, while reference numeral 10 will be used to denote a tubular to which the device 1 connects.In the figures, same or corresponding elements are indicated by same reference numerals. For clarity reasons, some elements may in some of the figures be with-out reference numerals. 10 A person skilled in the art will understand that the figures are just principal drawings. The relative proportions of individual elements may also be distorted. Any positional indications refer to the position shown in the figures.Figs. 1 and 2 show the device according to the invention in different perspective views. The device 1 is adapted to connect to a tubular 10, here in the form of a conductor, as 15 shown in Figs.3 and 4. The device 1 is provided with an inlet 3 for fluidised plugging material to which a free end of a not shown hose may be connected. The hose may typically be terminated with standardised subsea connector adapted to mate with the inlet 3. In the shown embodiment, the inlet 3 is provided at the bottom of a guiding structure 5 in the form of a funnel. This makes it simpler to connect a hose to the inlet 3, typically by 20 means of a manipulator of a not shown ROV. An inlet pipe 7 extends from the inlet 3 and to an arc-shaped cement manifold 9. From the cement manifold 9 a plurality of outlet pipes 11, here five, extends downwardly to define five outlets 13. The mid outlet pipe is longer than the others, with the outer outlet pipes shortest and remaining pipes with a length in between so that the outlet pipes 11 are symmetrically arranged around the mid 25 pipe. The outlet pipes 11 are supported on a recessed/porous support plate 15 shaped to substantially follow the length of the outlet pipes 13. A flange segment 17 extends radially outwardly from the support plate 15 substantially at the middle height of the device 1. The flange segment 17 supports a ROV handle 19 extending from the flange segment 17 3499188and upwardly towards a 90° bend and into the cement manifold 9. The ROV handle 19 also includes lower gripping bar 21 above the flange segment 17 and parallel to a plane defined by the flange segment 17. In use, the flange segment 17 will flush with the seabed S and cover a portion of an annulus between the tubular 10 and an inner wall of a 5 surrounding wellbore as a lid, as shown in Figs.3 and 4. In the shown embodiment, the flange segment 17 and outlet pipes 11 cover an arc corresponding to a circle sector of approximately 120°.The upper portion of the device 1 is provided with a connector 22, here in the form of a circular clamp with a first clamp portion 24 and a second clamp portion 26. Each of the 10 first and second clamp portions 24, 26 are pivotably connected to a third stationary, rear clamp portion 28 through rotation bolts 30. Each of the first, second and third clamp portions are lined with a friction pads 32 to ensure a good frictional fit with the tubular 10. In the shown embodiment, the first and second clamp portions 24, 26 cover approximately 90° each, while the third, stationary clamp portion 28 covers approximately 180° of the 15 circumference of the tubular 10.The device 1 further comprises an input member 34, here in the form of a hydraulic receptacle, for receiving power from an external source, which in this embodiment will be in the form of a hydraulic supply. A not shown hydraulic stab/connector fits complementary into the receptable 34 to provide control of the connector 22. In the shown embodi- 20 ment the connector 22 comprises three different hydraulic cylinders; a first cylinder 36 for operating the first clamp portion 24, and second cylinder 38 for operating the second clamp portion 26 and a third cylinder 40 for tightening the connection between first and second clamp portions, as will be explained with reference to Figs.5-7. For each of the cylinders 36, 38, 40 the receptacle 34 includes not shown ports for individual control of 25 cylinders in both directions, i.e. inlet ports for each cylinder to pressure either side of not shown pistons. The hydraulic connection between the receptacle 34 and the cylinders 36, 38, 40 is not shown in detail in the drawings. A distal end of piston rods 37, 39 for both the first and second cylinders 36, 38 are pivotably connected to extended diameter portions 42, 44, respectively , of the first and second clamp portions 24, 26 at rotation bolts 349918941. Rear cylinder portions 43, 45 of the cylinders 36, 38 are pivotally connected to the third, rear clamp portion 28 via respective first and second brackets 46, 48 at rotation bolts 49. The hydraulic receptacle 34 is also connected to the first bracket 46.In Fig.5 the connector 22 is in its idle/open position. Both the first and second clamp por- 5 tions 24, 26 are swung/pivoted outwardly, so that the device 1 may be brought around a tubular 10 (not shown in this fig.). In the open position both the first cylinder 36 and the second cylinder 38 have their respective piston rods 37, 39 in a retracted position, while the third cylinder has its piston rod in an extended position (at least before the first clamp portion 24 folds around the tubular 10). In order to fold the clamp 22 around a tubular, 10 the second cylinder 38 is first energised by supply of hydraulic fluid to extend its position rod 39. By extending the piston rod 39 the second clamp portion 26 is pivoted inwardly so that it folds inwardly as indicated in Fig.6. The first clamp portion 24 is then similarly pivoted inwardly by energising the first cylinder 36 so that its respective piston rod 37 is extended. A claw 50 at a distal end of the first clamp portion folds around a vertically ar- 15 ranged locking bolt 52 at a distal end of the second clamp portion 26. In order to securely lock the first and second clamp portions 24, 26 together and to tighten the grip around tubular 10, the third cylinder is energised by retracting its piston rod 41, whereby the claw 50 at the distal end of the first clamp portion enters from the position where it folds around the locking bolt 52 into a secure locking position where it engages the locking bolt 20 52. The device is now securely connected to the (not shown) tubular. A single hydraulic connection with multiple ports may thereby be used to energise different functions and to securely lock the device 1 to the tubular 10. A not shown hose may thereafter be connected to the inlet 3 if the connection has not already been made.In order to remove the device 1 from the tubular 10, the connection procedure presented 25 above may be run in reverse.It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use 34991810of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.The mere fact that certain measures are recited in mutually different dependent claims 5 does not indicate that a combination of these measures cannot be used to advantage.
Claims
34991811C l a i m s1. Device (1) for cementing an annulus (A) in a subsea wellbore, the device (1) comprising:- an inlet (3) for a fluidised plugging material;5 - one or more outlets (13) for the fluidised plugging material, the one or more outlets (13) being adapted to extend into an anulus (A) between a tubular (10) and a wall of a wellbore surrounding the tubular (10) in the subsea well;- a connector (22) for connecting the device (1) to an upper portion of the tubular (10);10 - an input member (34) for receiving power to operate the connector (22) between an idle position, in which the device (1) is not connected to the tubular, and an active position in which the device (1) is connected to the tubular (10).2. The device (1) according to claim 1, wherein the connector (22) is a clamp operable between an open position in which it is not connected to the tubular (10) and15 a closed position around the tubular (10).3. The device (1) according to claim 1 or 2, wherein the input member is a hydraulic input member (34) adapted to receive a hydraulic fluid for operating the connector (22) between the idle and active positions.4. The device according to claim 3, wherein the input member is a hydraulic re-20 ceptable (34) for receiving a hydraulic stab.5. The device according claims 4, wherein the hydraulic receptacle includes a plurality of hydraulic inlet ports to operate a plurality of different functions of the connector (22).6. The device according to claim 5 as dependent on claim 2, wherein a first hydrau-25 lic port is for operating a first portion (24) of the clamp (22) via a first hydraulic cylinder (36), a second hydraulic port is for operating a second portion (26) of the clamp (22) via a second hydraulic cylinder (38), wherein the first and second portions (24, 26) of the clamp (22) at least partially enclose the tubular (10) in their34991812active position, and wherein the device (1) further comprises a third hydraulic inlet port for operating a third hydraulic cylinder (40) to tighten the first and second portions (24 ,26) of the clamp (22) around the tubular (10).7. The device (1) according to claim 6, wherein each cylinder (36, 38, 40) corre-5 sponds to two hydraulic inlet ports for driving the cylinder (36, 38, 40) in either direction.8. The device (1) according to any one of the preceding claims, where in the inlet (3) is provided substantially perpendicularly to the one or more outlets (13).9. The device (1) according to any one of the preceding claims, where device (1)10 comprises two or more outlets (13), the two or more outlets being arranged with a distance therebetween along a substantially circular arc.10. The device (1) according to claim 9, wherein the arc defines a segment of 60 to 270°, preferably 90-180° and most preferably around 120°.11. The device (1) according to any one of the preceding claims, wherein the inlet (3)15 is connected to a guiding structure (5) for guiding free end of a hose into connection with the inlet (3).12. The device (1) according to any one of the preceding claims, wherein the device further includes a ROV handle (19).13. System for cementing an annulus (A) in a subsea wellbore, the system including a20 device (1) according to claim 12, and further comprising:- a tubular (10) positioned in the subsea wellbore;- the one or more outlets (13) of the device being positioned in an annulus (A) formed between the tubular (10) and a wall of the subsea wellbore - a ROV for carrying the device (1) and for connecting an output member to the25 input member (34) on the device (1) for powering and operating the connector (22).14. The system according to claim 13, wherein the tubular (10) is a conductor.3499181315. Method for operating a system according claim 13 or 14, the method including the steps of:- operating the ROV to connect the device (1) to an upper portion of the tubular (10),5 - operating the ROV to connect the outlet of a hose to the inlet (3) of the device (1); and- pumping a fluidised plugging material through the hose, to the inlet (3) and out through the one or more outlets (13) into the annulus (A) around the tubular (10).10 16. The method according to claim 15, wherein the method, after pumping of fluidised plugging material, includes the steps of:- disconnecting the hose from the device (1); and- removing the device (1) from the tubular (10).34991814P a t e n t k r a v1. Anordning (1) for sementering av et ringrom (A) i et havbunnsbrønnhull, anordningen (1) omfattende:- et innløp (3) for et fluidisert pluggemateriale;5 - ett eller flere utløp (13) for det fluidiserte pluggematerialet, idet det ene eller flere utløpene (13) er tilpasset til å strekke seg inn i et ringrom (A) mellom et rør (10) og en vegg av et brønnhull som omgir røret (10) i havbunnsbrønnen;- en konnektor (22) for kobling av anordningen (1) til et øvre parti av røret (10);- et inngangselement (34) for mottak av kraft for å operere konnektoren (22) mellom en10 uvirksom posisjon hvori anordningen (1) ikke er koblet til røret, og en aktiv posisjon hvori anordningen (1) er koblet til røret (10).2. Anordning (1) ifølge krav 1, hvor konnektoren (22) er en klemme som kan opereres mellom en åpen posisjon hvori den ikke er tilkoblet røret (10), og en lukket posisjon om røret (10).15 3. Anordning (1) ifølge krav 1 eller 2, hvor inngangselementet er et hydraulisk inngangselement (34) tilpasset til å motta et hydraulisk fluid for å operere konnektoren (22) mellom den uvirksomme og den aktive posisjonen.4. Anordning ifølge krav 3, hvor inngangselementet er en hydraulisk mottaker (34) for mottak av en hydraulisk stab.20 5. Anordning ifølge krav 4, hvor den hydrauliske mottakeren inkluderer en flerhet av hydrauliske innløpsporter for å operere en flerhet av ulike funksjoner av konnektoren (22).6. Anordning ifølge krav 5 som avhengig av krav 2, hvor en første hydraulisk port er for å operere et første parti (24) av klemmen (22) via en første hydraulisk sylinder (36), en andre hydraulisk port er for å operere et andre parti (26) av klemmen (22) via en andre25 hydraulisk sylinder (38), hvor de første og andre partiene (24, 26) av klemmen (22) i det minste delvis omslutter røret (10) i deres aktive posisjon, og hvor anordningen (1) videre omfatter en tredje hydraulisk innløpsport for å operere en tredje hydraulisk sylinder (40) for å stramme de første og andre partiene (24, 26) av klemmen (22) om røret (10).7. Anordning (1) ifølge krav 6, hvor hver sylinder (36, 38, 40) korresponderer med to hyd-30 rauliske innløpsporter for å drive sylinderen (36, 38, 40) i hvilken som helst retning.8. Anordning (1) ifølge et hvilket som helst av de foregående kravene, hvor innløpet (3) er tilveiebrakt i det vesentlige loddrett i forhold til det ene eller flere utløpene (13).349918159. Anordning (1) ifølge et hvilket som helst av de foregående kravene, hvor anordningen (1) omfatter to eller flere utløp (13), idet de to eller flere utløpene er anordnet med en avstand derimellom langs en i det vesentlige sirkulær bue.10. Anordning (1) ifølge krav 9, hvor buen definerer et segment på 60 til 270°, fortrinnsvis5 90–180° og mest fortrinnsvis rundt 120°.11. Anordning (1) ifølge et hvilket som helst av de foregående kravene, hvor innløpet (3) er koblet til en styrestruktur (5) for å styre en fri ende av en slange inn i sammenkobling med innløpet (3).12. Anordning (1) ifølge et hvilket som helst av de foregående kravene, hvor anordningen vi-10 dere omfatter et ROV-håndtak (19).13. System for sementering av et ringrom (A) i et havbunnsbrønnhull, idet systemet inkluderer en anordning (1) ifølge krav 12, og videre omfattende:- et rør (10) posisjonert i havbunnsbrønnhullet;- det ene eller flere utløpene (13) på anordningen er posisjonert i et ringrom (A) tildannet15 mellom røret (10) og en vegg av havbunnsbrønnhullet- en ROV for å bære anordningen (1) og for å koble et utgangselement til inngangselementet (34) på anordningen (1) for å drive og operere konnektoren (22).14. System ifølge krav 13, hvor røret (10) er et lederør.15. Fremgangsmåte for å operere et system ifølge krav 13 eller 14, idet fremgangsmåten in-20 kluderer trinnene:- å operere ROV-en for å koble anordningen (1) til et øvre parti av røret (10),- å operere ROV-en for å koble utløpet av en slange til innløpet (3) på anordningen (1); og- å pumpe et fluidisert pluggemateriale gjennom slangen, til innløpet (3) og ut gjennom25 det ene eller flere utløpene (13) og inn i ringrommet (A) rundt røret (10).16. Fremgangsmåte ifølge krav 15, hvor fremgangsmåten, etter pumping av fluidisert pluggemateriale, inkluderer trinnene:- å koble slangen fra anordningen (1); og- å fjerne anordningen (1) fra røret (10).
Drawings

Priority

No priority

Patent classes

IPC classesE21B 33/14CPC classesE21B 33/143

Citations

US 2005183857 A1 (A1)US 2023003095 A1 (A1)US 2006076135 A1 (A1)US 2007137870 A1 (A1)

Applicants, owners and inventors

Owners
Brigt Lode Teknologi AS
Meisevegen 8 4360 VARHAUG NO (HÅ Municipality, Rogaland county)Org. number: 886180772Inventors
Brigt Lode
Meisevegen 8 4360 VARHAUG NO (HÅ Municipality, Rogaland county)

Agent

HÅMSØ PATENTBYRÅ AS
HÅMSØ PATENTBYRÅ AS

Org. number: 918752900

Name and address are automatically synchronized with the Brønnøysund Register Centre.

Open in The Brønnøysund Register Centre
Postboks 9 4068 STAVANGER NO (STAVANGER Municipality, Rogaland county)
Org. number: 918752900
Reference: P31275NO00

Status history

Payment history

Oppositions and appeals

No oppositions or appeals

Administrative limitation

No administrative limitation

Liens and licences

No liens or licenses registered

Gazette entries

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