Key information

Title
A manifold arrangement for receiving a hydrocarbon fluid from at least one production tubing of a hydrocarbon well
Application number
20180501
Case type
National
Status
30.04.2022 Ikke betalt årsavgift
Filed
12.04.2018
Effective date
12.04.2018
Publicly available
14.10.2019
Applicant
GREEN ENTRANS AS (NO)
Owner
GREEN ENTRANS AS (NO)
Inventor
Jørn Haugvaldstad (NO)
Agent
PROTECTOR IP AS (NO)
Granted
14.10.2019
Patent number
344210

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
A manifold arrangement (1) for receiving a hydrocarbon fluid from at least one production tubing (3) of a hydrocarbon well. The arrangement comprises a manifold tubing (10) comprising a spacing (12) for receiving said hydrocarbon fluid, at least one inlet (20) adapted to be connected to said at least one production tubing for introducing the hydrocarbon fluid into the spacing, and an outlet (22) for discharging the hydrocarbon fluid from the spacing. The manifold tubing comprises a further inlet (30) for introducing an evacuation fluid into the spacing so that the spacing is evacuated from the hydrocarbon fluid in the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing.

Publications

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Documents

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Date
 Date Doc. No. Process Case number In/Out Journal description To/from
 18.11.2022 13-01 Saksbehandling 20180501(344210) UT PT Opphørt Patent - for ikke betalt årsavgift (3311)
01.09.2022 12-01 Saksbehandling 20180501(344210) UT PT Påminnelse om ikke betalt årsavgift (3329) (PT20180501)
13.10.2021 02-01 Endring av fullmektig 2021/13786 UT GH Forespørsel PROTECTOR IP AS
 30.09.2021 01-02 Endring av fullmektig 2021/13786 INN Generalfullmakt NO PROTECTOR IP AS
 30.09.2021 01-01 Endring av fullmektig 2021/13786 INN Generell henvendelse PROTECTOR IP AS
 03.03.2020 11-01 Saksbehandling 20180501 UT PT Varsel om betaling av første årsavgift (3317) (PT20180501)
21.10.2019 10-01 Saksbehandling 20180501 UT PT Registreringsbrev Nasjonal Patent (15) (PT20180501)
24.07.2019 09-01 Saksbehandling 20180501 UT PT Meddelelse om patent HÅMSØ PATENTBYRÅ AS
 18.06.2019 08-06 Saksbehandling 20180501 INN Beskrivelse ren HÅMSØ PATENTBYRÅ AS
 18.06.2019 08-05 Saksbehandling 20180501 INN Krav HÅMSØ PATENTBYRÅ AS
 18.06.2019 08-04 Saksbehandling 20180501 INN Patenttegninger HÅMSØ PATENTBYRÅ AS
 18.06.2019 08-03 Saksbehandling 20180501 INN Hovedbrev HÅMSØ PATENTBYRÅ AS
 18.06.2019 08-02 Saksbehandling 20180501 INN Beskrivelse merket HÅMSØ PATENTBYRÅ AS
 18.06.2019 08-01 Saksbehandling 20180501 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 11.04.2019 07-01 Saksbehandling 20180501 UT Realitet patent HÅMSØ PATENTBYRÅ AS
 04.01.2019 06-06 Saksbehandling 20180501 INN Krav merket HÅMSØ PATENTBYRÅ AS
 04.01.2019 06-05 Saksbehandling 20180501 INN Krav ren HÅMSØ PATENTBYRÅ AS
 04.01.2019 06-04 Saksbehandling 20180501 INN Patenttegninger HÅMSØ PATENTBYRÅ AS
 04.01.2019 06-03 Saksbehandling 20180501 INN Hovedbrev HÅMSØ PATENTBYRÅ AS
 04.01.2019 06-02 Saksbehandling 20180501 INN Beskrivelse HÅMSØ PATENTBYRÅ AS
 04.01.2019 06-01 Saksbehandling 20180501 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 10.10.2018 05-02 Saksbehandling 20180501 UT PT_report 11:53:57
10.10.2018 05-01 Saksbehandling 20180501 UT Realitet patent HÅMSØ PATENTBYRÅ AS
 25.05.2018 04-02 Saksbehandling 20180501 INN Fullmakt HÅMSØ PATENTBYRÅ AS
 25.05.2018 04-01 Saksbehandling 20180501 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 16.04.2018 03-01 Saksbehandling 20180501 UT Formalia 1 HÅMSØ PATENTBYRÅ AS
 16.04.2018 02-01 Saksbehandling 20180501 UT Infobrev til oppfinner HÅMSØ PATENTBYRÅ AS
 12.04.2018 01-04 Saksbehandling 20180501 INN Patenttegninger HÅMSØ PATENTBYRÅ AS
 12.04.2018 01-03 Saksbehandling 20180501 INN Erklæring Søkers rett til oppfinnelse HÅMSØ PATENTBYRÅ AS
 12.04.2018 01-02 Saksbehandling 20180501 INN Beskrivelse HÅMSØ PATENTBYRÅ AS
 12.04.2018 01-01 Saksbehandling 20180501 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
MANIFOLD ARRANGEMENT FOR RECEIVING A HYDROCARBON FLUID FROM AT LEAST ONE PRODUCTION TUBING OF A HYDROCARBON WELLIntroductionThe present invention relates to a manifold arrangement for receiving a hydrocarbon fluid from at least one production tubing of a hydrocarbon well. The arrangement comprises a manifold tubing comprising a spacing for receiving said hydrocarbon fluid, at least one inlet adapted to be connected to said at least one production tubing for introducing the hydrocarbon fluid into the spacing, and an outlet for discharging the hydrocarbon fluid from the spacing.The present invention further relates to a manifold system, a monopile structure, a method and use of the manifold arrangement.Prior artManifolds are used in exploitation of hydrocarbon wells, where the manifold receive a hydrocarbon fluid from at least one production tubing of a hydrocarbon well. The manifold has the function of collecting and guiding the hydrocarbon fluid from the production tubing to processing equipment for various processing treatments of the hydrocarbon fluid.In the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing, the hydrocarbon fluid present in manifold may form a hydrate plug in the spacing of the manifold. Prior to restart of the production, it is necessary to remove the hydrate plug from the spacing. The removal of the hydrate plug may be difficult and time consuming. The removal may for example include operation of heating the manifold.WO2016/028158 A1 discloses a well-head assembly comprising a piping configured for gravity induced drainage.US 2008/009308 A1 discloses a method and system for managing hydrates in a subsea production line.Summary of the invention The 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. In particular, a first object of the invention is to provide manifold arrangement that prevents formation of hydrate plugs in the spacing of the manifold.The object is achieved by means of a manifold arrangement for receiving a hydrocarbon fluid from at least one production tubing of a hydrocarbon well, wherein the arrangement comprises a manifold tubing comprising a spacing for receiving said hydrocarbon fluid, at least one inlet adapted to be connected to said at least one production tubing for introducing the hydrocarbon fluid into the spacing, and an outlet for discharging the hydrocarbon fluid from the spacing, wherein the manifold tubing comprises a further inlet for introducing an evacuation fluid into the spacing so that the spacing is evacuated from the hydrocarbon fluid in the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing.The arrangement is characterised in that According to an embodiment of the invention, the arrangement further comprises an outlet valve at the outlet for closing the spacing of the manifold tubing after that the hydrocarbon fluid has been evacuated or partly evacuated from the spacing.The further inlet enables an evacuation fluid to be controllable introduced into the spacing of the manifold. By means of introducing the evacuation fluid into the spacing of the manifold in the event of an unexpected production stop, hydrocarbon fluid present in the spacing of the manifold is pushed out of the spacing through the outlet.The evacuation fluid comprises fluid a less prone to freezing than the hydrocarbon fluid and inhibits the initial stage of the formation of a hydrate plug before the hydrocarbon fluid has been evacuated from the spacing. The evacuation fluid has also the function of preventing formation of plugs within the spacing at production stops of long durations.By means of closing the outlet valve after that the hydrocarbon fluid has been evacuated from the spacing, a backflow of the hydrocarbon fluid through the outlet into spacing of the manifold is prevented.Accordingly, by means of the arrangement of the invention, the risk of formation of hydrate plug is reduced in the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing. The arrangement of the invention enables the hydrocarbon exploitation to be restarted without interruptions due to plugging of the manifold arrangement.According to an embodiment of the invention, the arrangement further comprises an inlet valve at the further inlet for controlling the introduction of the evacuation fluid into the spacing.According to an embodiment of the invention, the arrangement further comprises means for pressurizing the evacuation fluid. The means for pressurizing the evacuation fluid enables the evacua tion fluid to be pushed into the spacing through the further inlet. The means for pressurizing the evacuation fluid is for example a pump. Alternative, the evacuation fluid may be stored with an over pressure in relation to the pressure within the spacing o the manifold.According to an embodiment of the invention, the outlet valve comprises a time induced closing mechanism that is adapted to receive information on an event dependent on the unexpected production stop. By means of the time induced closing mechanism, the evacuation of the spacing of the manifold is done in an automatic manner.According to an embodiment of the invention, said time induced closing mechanism is configured to induce a closure of the outlet valve with a predetermined time delay from receipt of said event. The predetermined time delay is configured so that the outlet valve closes the spacing after a time sufficient to fully or essentially evacuate the spacing from the hydrocarbon fluid.According to an embodiment of the invention, the event dependent on the unexpected production stop is one of information on initiation of the introduction of evacuation fluid into the spacing and information on closure of a valve of the production tubing of the hydrocarbon well.According to an embodiment of the invention, the inlet valve is configured to receive a control order to open on basis of detection of the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing. The evacuation of the spacing of the manifold is induced on basis of the detection of the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing.According to an embodiment of the invention, the inlet valve comprises a further time induced closing mechanism that is adapted to receive information on an event dependent on the unexpected production stop.According to an embodiment of the invention, said further time induced closing mechanism is configured to induce a closure of the inlet valve with a predetermined time delay from receipt of said event.According to an embodiment of the invention, the further inlet is arranged at an end portion of the spacing opposite to the outlet of the spacing.According to an embodiment of the invention, the arrangement further comprises a container adapted to hold the evacuation fluid and a fluid connection from the container to the further inlet.According to an embodiment of the invention, the spacing of the manifold tubing comprises a first volume for the receipt of the hydrocarbon fluid and the container comprises a second volume for holding the evacuation fluid, wherein the second volume is equal or larger than the first volume.According to an embodiment of the invention, the manifold tubing comprises a curvature formed to extend to a plurality of production tubings, and which manifold tubing comprise corresponding inlets adapted to be connected to the production tubings.According to an embodiment of the invention, the manifold tubing has a spiral curvature adapted to connect a plurality of production tubings arranged in a circular pattern, which production tubings are configured to be connected at different elevations on the manifold tubing.According to an embodiment of the invention, the manifold is oriented inclined so that the inlet to the spacing is in an elevated position compared to the outlet from the spacing. By means of the inclined orientation, evacuation of the hydrocarbon fluid from the spacing is enhanced.According to an embodiment of the invention, the arrangement comprises a control system adapted to transmit a control order to at least one of the inlet valve and the outlet valve.The invention further relates to a manifold system for receiving a hydrocarbon fluid from at least one production tubing of a hydrocarbon well, wherein the system comprises the arrangement according to any of above embodiments and the evacuation fluid, and wherein the evacuation fluid has a freezing point that is lower than the hydrocarbon fluid being conducted through the at least one production tubing of the hydrocarbon well.According to an embodiment of the invention, the evacuation fluid mainly comprises one of monoethylene glycol and methanol.The invention further relates to a monopile structure for hydrocarbon production, which structure comprises a plurality of production tubing and a manifold arrangement according to any of above embodiments.According to an embodiment of the invention, the plurality of production tubings are arranged in a circular pattern and the manifold tubing has a corresponding circular curvature for connecting the production tubings.The invention further relates to a method for evacuating a manifold arrangement according to any of above embodiment, wherein the method comprises the step of:- receiving information on the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing, and- introducing an evacuation fluid into the spacing so that the spacing is evacuated from the hydrocarbon fluid.According to an embodiment of the invention, the method further comprises- terminating the introduction of evacuation fluid into the spacing after the hydrocarbon fluid mainly has been evacuated from the spacing, and- closing the outlet valve. The invention further relates to use of a manifold arrangement according to any of above embodiments.Brief description of the drawingsIn the following is described examples of preferred embodiments illustrated in the accompanying drawings, wherein:Fig.1 discloses a schematic view of a manifold arrangement comprising a manifold tubing for receiving a hydrocarbon fluid from at least one production tubing of a hydrocarbon well according to an embodiment of the invention;Fig.2 discloses a manifold tubing according to a further embodiment of the invention;Fig.3a discloses a flowchart of a method for evacuating a manifold arrangement according to an embodiment of the invention; andFig.3b discloses a flowchart of a method for evacuating a manifold arrangement according to a further embodiment of the invention.Detailed description of the inventionIn fig.1 is a schematic view of a manifold arrangement 1 for receiving a hydrocarbon fluid from at least one production tubing 3 of a hydrocarbon well according to an embodiment of the invention disclosed.The arrangement 1 comprises a manifold tubing 10 comprising a spacing 12 for receiving the hydrocarbon fluid from the production tubing 3. The arrangement 1 further comprises an inlet 20 for connection to the production tubing 3 for introducing the hydrocarbon fluid into the spacing 12, and an outlet 22 for discharging the hydrocarbon fluid from the spacing 12. The hydrocarbon fluid is discharged to processing equipment 24 for further processing of the hydrocarbon fluid.In the disclosed embodiment and for the purpose of explanation, the manifold tubing 10 comprise one inlet 20 that is connected to one production tubing 3. However, it shall be understood that the manifold tubing 10 may comprise a plurality of inlets 20 for connection to corresponding plurality of production tubings 3.In the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing 3, the flow of the hydrocarbon fluid is terminated. The flow may for example by means of closure of a production valve 26 in connection to the inlet 20 to the manifold tubing 10, such as a production valve 26 at a valve arrangement 28, for example at a so called “Christmas tree”.The manifold tubing 10 further comprises a further inlet 30 for introducing an evacuation fluid into the spacing 12 so that the spacing 12 is evacuated from the hydrocarbon fluid in the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing 3. The arrangement 1 also comprises a container 32 adapted to hold the evacuation fluid and a fluid connection 34 from the container 32 to the further inlet 30.Preferably, the arrangement 1 further comprises an inlet valve 40 at the further inlet 30 for controlling the introduction of the evacuation fluid into the spacing 12. Furthermore, the arrangement 1 preferably further comprises an outlet valve 42 at the outlet 22 for closing the spacing 12 of the manifold tubing 10 after that the hydrocarbon fluid has been evacuated from the spacing 12.By means of the manifold arrangement 1 according to the invention, the spacing 12 of the manifold tubing 10 is evacuated from the hydrocarbon fluid in the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing 10 in that an evacuation fluid is introduced into the spacing 12 of the manifold through the further inlet 30. Thereby, the present hydrocarbon fluid is pushed out through the outlet 22 of the manifold tubing 10. After the spacing 12 has been evacuated from the hydrocarbon fluid, the outlet valve 42 and the inlet valve 40 are closed. Accordingly, the spacing 12 of the manifold tubing 10 is after evacuation in a state filled with the evacuation fluid. By means of the invention, the formation of hydrate plugs in the manifold tubing 10 is prevented.The evacuation fluid is a fluid with properties of being less prone to freezing than the hydrocarbon fluid and accordingly inhibits the initial stage of the formation of a hydrate plug before the hydrocarbon fluid has been evacuated from the spacing 12. After the outlet valve 42 and the inlet valve 40 have been closed, the evacuation fluid further has the function of preventing solidification within the spacing 12 of the manifold tubing 10.The evacuation fluid comprises for example mainly one of monoethylene glycol and methanol, or a mixture thereof. Accordingly, evacuation fluid inhibits formation of plugs also even at long duration of production stops.According to an embodiment of the invention, the outlet valve 42 comprises a time induced closing mechanism that is adapted to receive information on an event dependent on the unexpected production stop. The time induced closing mechanism is configured to induce a closure of the outlet valve 42 with a predetermined time delay from receipt of said event, such as information on initiation of the introduction of evacuation fluid into the spacing 12 or information on closure of a valve of the production tubing 3 of the hydrocarbon well. According to an embodiment of the invention, the inlet valve 40 may comprise a corresponding time induced closing mechanism as the outlet valve 42.According to an embodiment of the invention, the arrangement 1 further comprises a control unit 50 comprising the time induced closing mechanism of the outlet valve 42 and the inlet valve 40. The control unit 50 is configured to receive information on an event dependent on the unexpected production stop, such as the closure of the production valve 26 as indicated in fig.1. The control unit 50 comprises a logic unit and a clock unit. The control unit 50 is configured to transmit control order to the outlet valve 42 and the inlet valve 40 with a respective predetermined time delay from the receipt of the information of the event dependent on the unexpected production stop. The control order is configured, when being received, to trigger a closure of the outlet valve 42 and the inlet valve 40.It shall be understood that the outlet valve 42 and the inlet valve 40 alternatively may respectively comprise the time induced closing mechanism, such as a logic unit and clock unit, and being configured to receive information on an event dependent on the unexpected production stop.The spacing 12 of the manifold tubing 10 has a first volume. The container 32 for holding the evacuation fluid has a second volume that is arranged equal to or larger than the first volume. Accordingly, it is assured that sufficient volume of evacuation fluid is provided at the evacuation of the hydrocarbon fluid from the spacing 12 of the manifold 10.The invention further relates to a manifold system for receiving a hydrocarbon fluid from at least one production tubing 3 of a hydrocarbon well. The system comprises the manifold arrangement 1 according to above and prepared with the evacuation fluid.In fig.2, a further embodiment of the manifold tubing 10 is disclosed. The manifold tubing 10 is configured for connection to a plurality of production tubings 10 and comprises a plurality of inlets 20 distributed along the extension of the manifold tubing 10. In the disclosed embodiment, the manifold tubing 10 comprises a curvature formed to extend to a plurality of production tubings 3 positioned in a circular formation.The invention further relates a monopile structure for hydrocarbon production that comprises a plurality of production tubing 3 and the manifold arrangement 1 according to above. Preferably, the monopile structure is configured according to an embodiment as shown in WO2017099605 (A1) and comprising the manifold arrangement 1 as discussed above.In fig.3 is a flowchart of a method for evacuating a manifold arrangement 1 disclosed.The method is initiated in a step 110 comprises receiving information on the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing 3. The information may for example be initiated by the closure of the production valve 26 of the valve assembly 28. Alternatively, the information may be initiated by an operator and received by the arrangement 1, such as the control unit 50 in fig.1.In a step 120, the method further comprises introducing an evacuation fluid into the spacing 12 so that the spacing 12 is evacuated from the hydrocarbon fluid. In fig.3b is a flowchart of a method for evacuating a manifold arrangement 1 according to a further embodiment of the invention disclosed.The method differs from the embodiment in fig.3a in that the method, in a step 130, further comprises terminating the introduction of evacuation fluid into the spacing 12 after the hydrocarbon fluid mainly has been evacuated from the spacing 12. This is preferably done by closing the inlet valve 40. Alternatively, means for introducing the evacuation fluid into the spacing 12 may be inactivated, such as a pump, etcetera. In a step 140, the method further comprises closing the outlet valve 42.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. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Claims
C l a i m s1. A manifold arrangement (1) for receiving a hydrocarbon fluid from at least one production tubing (3) of a hydrocarbon well, wherein the arrangement (1) comprises a manifold tubing (10) comprising a spacing (12) for receiving said hydrocarbon fluid, at least one inlet (20) adapted to be connected to said at least one production tubing (3) for introducing the hydrocarbon fluid into the spacing (12), and an outlet (22) for discharging the hydrocarbon fluid from the spacing (12), wherein the manifold tubing (10) comprises a further inlet (30) for introducing an evacuation fluid into the spacing (12) so that the spacing (12) is evacuated from the hydrocarbon fluid in the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing (3),c h a r a c t e r i s e d i n thatthe arrangement (1) further comprises an outlet valve (42) at the outlet (22) for closing the spacing (12) of the manifold tubing (10) after that the hydrocarbon fluid has been evacuated or partly evacuated from the spacing (12).2. The arrangement (1) according to claim 1, wherein the arrangement (1) further comprises an inlet valve (40) at the further inlet (30) for controlling the introduction of the evacuation fluid into the spacing (12).3. The arrangement (1) according to any of the previous claims, wherein the outlet valve (42) comprises a time induced closing mechanism that is adapted to receive information on an event dependent on the unexpected production stop.4. The arrangement (1) according to claim 3, wherein said time induced closing mechanism is configured to induce a closure of the outlet valve (42) with a predetermined time delay from receipt of said event.5. The arrangement (1) according to any of claim 3-4, wherein event dependent on the unexpected production stop is one of information on initiation of the introduction of evacuation fluid into the spacing (12) and information on closure of a valve of the production tubing (3) of the hydrocarbon well.6. The arrangement (1) according to any of the previous claims, wherein the arrangement (1) further comprises a container (32) adapted to hold the evacuation fluid and a fluid connection (34) from the container (32) to the further inlet (30).7. The arrangement (1) according to claim 6, wherein the spacing (12) of the manifold tubing (10) comprises a first volume for the receipt of the hydrocarbon fluid and the container (32) comprises a second volume for holding the evacuation fluid, wherein the second volume is equal to or larger than the first volume.8. The arrangement (1) according to any of the previous claims, wherein the manifold tubing (10) comprises a curvature formed to extend to a plurality of production tubings (3), and which manifold tubing (10) comprise corresponding inlets (20) adapted to be connected to the production tubings (3).9. A manifold system for receiving a hydrocarbon fluid from at least one production tubing (3) of a hydrocarbon well, wherein the system comprises the arrangement (1) according to claim 1-8 and the evacuation fluid, and wherein the evacuation fluid has a freezing point that is lower than the hydrocarbon fluid being conducted through the at least one production tubing (3) of the hydrocarbon well.10. The manifold system according to claim 9, wherein the evacuation fluid mainly comprises one of monoethylene glycol and methanol, or a mixture thereof.11. A monopile structure for hydrocarbon production, wherein the structure comprises a plurality of production tubing (3) and a manifold arrangement (1) according to any of claim 1-8.12. The structure according to claim 11, wherein the plurality of production tubings (3) are arranged in a circular pattern and the manifold tubing (10) has a corresponding circular curvature for connecting the production tubings (3).13. A method for evacuating a manifold arrangement (1) according to any of claim 1-8, wherein the method comprises the step of:- receiving information on the occurrence of an unexpected production stop in the hydrocarbon fluid from the production tubing (3), and- introducing an evacuation fluid into the spacing (12) so that the spacing (12) is evacuated from the hydrocarbon fluid.14. The method according to claim 13, wherein the method further comprises- terminating the introduction of evacuation fluid into the spacing (12) after the hydrocarbon fluid mainly has been evacuated from the spacing (12), and- closing the outlet valve (42).15. Use of a manifold arrangement (1) according to any of claim 1-8 for receiving a hydrocarbon fluid from at least one production tubing (3) of a hydrocarbon well.Patentkrav1. Manifoldarrangement (1) for å motta et hydrokarbonfluid fra minst ett produksjonsrør (3) i en hydrokarbonbrønn, hvor arrangementet (1) omfatter et manifoldrør (10) som omfatter et rom (12) for å motta nevnte hydrokarbonfluid, minst ett innløp (20) tilpasset til å være forbundet med nevnte minst ene produksjonsrør (3) for innføring av hydrokarbonfluidet i rommet (12), og et utløp (22) for avgivelse av hydrokarbonfluidet fra rommet (12), hvor manifoldrøret (10) omfatter et ytterligere innløp (30) for å innføre et evakueringsfluid i rommet (12), slik at rommet (12) evakueres fra hydrokarbonfluidet ved opptreden av et uventet produksjonsstopp i hydrokarbonfluidet fra produksjonsrøret (3),k a r a k t e r i s e r t v e d atarrangementet (1) videre omfatter en utløpsventil (42) ved utløpet (22) for å stenge manifoldrørets (10) rom (12) etter at hydrokarbonfluidet har blitt evakuert eller delvis evakuert fra rommet (12).2. Arrangement (1) ifølge krav 1, hvor arrangementet (1) videre omfatter en innløpsventil (40) ved det ytterligere innløpet (30) for å styre innføringen av evakueringsfluidet i rommet (12).3. Arrangement (1) ifølge et hvilket som helst av de foregående krav, hvor utløpsventilen (42) omfatter en tidsfremkalt stengemekanisme som er tilpasset til å motta informasjon om en hendelse som avhenger av det uventede produksjonsstoppet.4. Arrangement (1) ifølge krav 3, hvor den tidsfremkalte stengemekanismen er konfigurert til å fremkalle en stenging av utløpsventilen (42) med en forutbestemt tidsforsinkelse fra mottak av nevnte hendelse.5. Arrangement (1) ifølge et hvilket som helst av kravene 3-4, hvor hendelsen som avhenger av det uventede produksjonsstoppet er det ene av informasjon om igangsetting av innføringen av evakueringsfluid i rommet (12) og informasjon om stenging av en ventil i produksjonsrøret (3) i hydrokarbonbrønnen.6. Arrangement (1) ifølge et hvilket som helst av de foregående krav, hvor arrangementet (1) videre omfatter en beholder (32) tilpasset til å inneholde evakueringsfluidet og en fluidforbindelse (34) fra beholderen (32) til det ytterligere innløpet (30).7. Arrangement (1) ifølge krav 6, hvor rommet (12) i manifoldrøret (10) omfatter et første volum for mottaket av hydrokarbonfluidet, og beholderen (32) omfatter et andre volum for å inneholde evakueringsfluidet, hvor det andre volumet er lik eller større enn det første volumet.8. Arrangement (1) ifølge et hvilket som helst av de foregående krav, hvor manifoldrøret (10) omfatter en krumning formet til å strekke seg til en flerhet av produksjonsrør (3), og hvilket manifoldrør (10) omfatter tilsvarende innløp (20) tilpasset til å være forbundet til produksjonsrørene (3).9. Manifoldsystem for å motta et hydrokarbonfluid fra minst ett produksjonsrør (3) i en hydrokarbonbrønn, hvor systemet omfatter arrangementet (1) ifølge krav 1-8 og evakueringsfluidet, og hvor evakueringsfluidet har et frysepunkt som er lavere enn hydrokarbonfluidet som ledes gjennom det minst ene produksjonsrøret (3) i hydrokarbonbrønnen.10. Manifoldsystem ifølge krav 9, hvor evakueringsfluidet hovedsakelig omfatter det ene av monoetylenglykol og metanol, eller en blanding derav.11. Monopælstruktur for hydrokarbonproduksjon, hvor strukturen omfatter en flerhet av produksjonsrør (3) og et manifoldarrangement (1) ifølge et hvilket som helst av kravene 1-8.12. Struktur ifølge krav 11, hvor flerheten av produksjonsrør (3) er anordnet i et sirkulært mønster og manifoldrøret (10) har en tilsvarende sirkulær krumning for å forbinde produksjonsrørene (3).13. Fremgangsmåte for å evakuere et manifoldarrangement (1) ifølge et hvilket som helst av kravene 1-8, hvor fremgangsmåten omfatter trinnet:- å motta informasjon om opptredenen av et uventet produksjonsstopp i hydrokarbonfluidet fra produksjonsrøret (3), og- å innføre et evakueringsfluid i rommet (12), slik at rommet (12) evakueres fra hydrokarbonfluidet.14. Fremgangsmåte ifølge krav 13, hvor fremgangsmåten videre omfatter- å avslutte innføringen av evakueringsfluid i rommet (12) etter at hydrokarbonfluidet hovedsakelig har blitt evakuert fra rommet (12), og- å stenge utløpsventilen (42).15. Anvendelse av et manifoldarrangement (1) ifølge et hvilket som helst av kravene 1-8 for å motta et hydrokarbonfluid fra minst ett produksjonsrør (3) i en hydrokarbonbrønn.
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No priority

Patent classes

IPC classesE21B 43/00E21B 37/06B08B 9/02E02B 17/02CPC classesE21B 43/00E21B 37/06B08B 9/02E02B 17/02

Citations

US 2008/0093081 A1 (A1)US 2010/0193194 A1 (A1)US 8684089 B2 (B2)US 2017014874 A1 (A1)

Applicants, owners and inventors

Owners
GREEN ENTRANS AS
Mosterøyveien 161 4156 MOSTERØY NO (STAVANGER Municipality, Rogaland county)Org. number: 963724241Inventors
Jørn Haugvaldstad
Mosterøyveien 161 4156 MOSTERØY NO (STAVANGER Municipality, Rogaland county)

Agent

PROTECTOR IP AS
PROTECTOR IP AS

Org. number: 979409524

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