IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0600782
(2008-05-22)
|
등록번호 |
US-8534355
(2013-09-17)
|
우선권정보 |
NO-20072639 (2007-05-23) |
국제출원번호 |
PCT/NO2008/000177
(2008-05-22)
|
§371/§102 date |
20100122
(20100122)
|
국제공개번호 |
WO2008/143522
(2008-11-27)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
11 |
초록
▼
A valve (30) for a production liner (12) in connection with the extraction of oil and gas, arranged to automatically shut of the flow of fluid into the production liner (12) in the event of a gas break-through, whereby the valve (30) comprises a valve seating (32) containing at least one central inf
A valve (30) for a production liner (12) in connection with the extraction of oil and gas, arranged to automatically shut of the flow of fluid into the production liner (12) in the event of a gas break-through, whereby the valve (30) comprises a valve seating (32) containing at least one central inflow channel (34) and one or more outflow channels (36, 38) from the valve (30). The valve (30) is constructed with a curved design equal to the shape of the outer diameter of the production liner (12), and is placed on the outside of the production liner (12), and in that a rectangular shut off disk (40) with the same curving is arranged in the valve (30), in the flowing path of the liquid flow, to cause a high velocity flow over the shut off disk's surface (40a) against the valve seat (32), wherein the shut off disk (40) is adapted to seal against said valve seat (32) dependant on the differential pressure being produced by the viscosity of the passing flow. The invention also comprises a production liner containing a valve.
대표청구항
▼
1. A valve for a production liner in connection with the extraction of oil and gas, arranged to automatically shut off the flow of fluid into the production liner in the event of a gas break-through, whereby the valve comprises a valve seating containing at least one central inflow channel and one o
1. A valve for a production liner in connection with the extraction of oil and gas, arranged to automatically shut off the flow of fluid into the production liner in the event of a gas break-through, whereby the valve comprises a valve seating containing at least one central inflow channel and one or more outflow channels from the valve, wherein the valve is constructed with a curved design equal to the shape of the outer diameter of the production liner, and is placed on the outside of the production liner, and a shut off plate is arranged in the valve, in the flowing path of the liquid flow, to cause a high velocity flow over the shut off plate's surface against the valve seat, wherein the shut off plate is adapted to seal against said valve seat dependant on the differential pressure being produced in the passing flow according to the Bernoulli principle. 2. The valve according to claim 1, wherein the shut off plate is rectangular and is arranged in a rectangular chamber within the valve, and where the at least one central inflow channel is an open notch protruding at least half the distance of the chamber. 3. The valve according to claim 2, wherein the open notch of the central inflow channel in the bottom is shaped by side walls of an open, rectangular form, whereby the sidewalls thereafter exists in a funnel shape, and that the outflow channels are designed with a rectangular shape and are placed on each side of the central inflow channel. 4. The valve according to claim 2, wherein the valve comprises a lower belly shaped valve part containing inward protruding top folds, where the shut-off plate is contained in said belly shape, and an upper valve part comprising said seat and inflow channel, for positioning above the open belly shape, whereby the outflow channels are provided between said upper and lower valve parts. 5. The valve according to claim 4, wherein the valve is arranged in a separate valve chamber, or that the production liner represents the bottom and a housing represents the top of the valve chamber. 6. The valve according to claim 2, wherein the valve is a dynamic valve arranged to maintain a given characteristic for multiphase flow of fluid, independent of external control from surface. 7. A production liner for the extraction of oil and gas, comprising at least one surrounding sand screen and at least one adjacent inflow device arranged to control and direct the flow of fluid into the production liner, wherein the inflow device comprises a number of chambers, where there is flow channels between the chambers, wherein a pre-chamber is arranged to receive the flow of fluid from the sand screen, an intermediate valve chamber is arranged to receive the flow of fluid from the pre-chamber and to automatically shut off the gas from progressing into the production liner in the event of gas breakthrough, whereby the valve chamber comprises a number of valves according to claim 1, and a post chamber which is arranged to receive the flow of fluid from the valve chamber and to control and direct the flow of fluid into the production liner. 8. The production liner according to claim 7, wherein the valve chamber comprises a number of supporting rings fixed to the production liner, where the number of valves are placed with a mutual distance on the outer diameter of the production liner between said supporting rings and fixed inside of a surrounding housing. 9. The production liner according to claim 8, wherein the supporting rings constitutes two complete rings fixed to the production liner and are totally sealed, and is arranged to direct the flow of fluid and to keep the valves in place, in that the valves are positioned between the supporting rings. 10. The production liner according to claim 9, wherein the fluid entering through channels in the first supporting ring and thereafter through channels in the second supporting ring to the post chamber. 11. The production liner according to claim 7, wherein the prechamber comprises an acid plug arranged to open for gas production after the extraction of all available oil. 12. The production according to claim 7, wherein the pre-chamber contains a one-directional valve arranged to open. 13. The production liner according to claim 7, wherein the postchamber is arranged to direct the flow of fluid into the production liner through a kill filter. 14. The production liner according to claim 7, wherein the production liner is equipped with an autonomic water shut off valve. 15. A production liner structure for extraction of hydrocarbons, the production liner structure comprising: a production liner; anda valve located on an outer wall of the production liner, the valve being arranged to automatically shut off a flow of a fluid into the production liner in an event of a gas or water break-through, wherein the valve comprises: a valve seat containing at least one inflow channel and at least one outflow channel from the valve, anda shut off plate arranged in a fluid flow path, to cause a flow over the shut off plate's surface, wherein the shut off plate is adapted to seal against said valve seat dependant on a differential pressure produced by the fluid flow according to the Bernoulli principle; andwherein the at least one valve outflow channel connects with a corresponding inlet channel in the outer wall of the production liner.
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