Safety valve with electrical actuator and tubing pressure balancing
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/12
E21B-034/14
E21B-034/06
E21B-047/00
E21B-047/09
E21B-047/06
E21B-034/00
출원번호
US-0658298
(2015-03-16)
등록번호
US-9574423
(2017-02-21)
발명자
/ 주소
Williamson, Jr., Jimmie R.
Scott, Bruce E.
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Locke Lord LLP
인용정보
피인용 횟수 :
0인용 특허 :
59
초록▼
A well tool for use with a subterranean well can include a flow passage extending longitudinally through the well tool, an internal chamber containing a dielectric fluid, and a flow path which alternates direction, and which provides pressure communication between the internal chamber and the flow p
A well tool for use with a subterranean well can include a flow passage extending longitudinally through the well tool, an internal chamber containing a dielectric fluid, and a flow path which alternates direction, and which provides pressure communication between the internal chamber and the flow passage. A method of controlling operation of a well tool can include actuating an actuator positioned in an internal chamber of the well tool, a dielectric fluid being disposed in the chamber, and the chamber being pressure balanced with a flow passage extending longitudinally through the well tool, and varying the actuating, based on measurements made by at least one sensor of the well tool.
대표청구항▼
1. A method of controlling operation of a well tool, the method comprising: actuating an actuator positioned in an internal chamber of the well tool, a dielectric fluid being disposed in the chamber, and the chamber being pressure balanced with a flow passage extending longitudinally through the wel
1. A method of controlling operation of a well tool, the method comprising: actuating an actuator positioned in an internal chamber of the well tool, a dielectric fluid being disposed in the chamber, and the chamber being pressure balanced with a flow passage extending longitudinally through the well tool;providing pressure communication between the internal chamber and the flow passage through a flow path that includes at least two reversals in flow direction, wherein the flow path comprises multiple flow path sections that extend longitudinally from an upper manifold to a lower manifold;providing fluid communication between alternating opposite ends of adjacent flow path sections through the upper and lower manifolds; andvarying the actuating, based on measurements made by at least one sensor of the well tool. 2. The method of claim 1, wherein the actuating further comprises the actuator displacing an operating member, and wherein the sensor senses displacement of the operating member. 3. The method of claim 2, wherein the varying comprises changing a speed of the displacement, based on the sensed displacement of the operating member. 4. The method of claim 2, wherein the varying comprises changing a force output by the actuator, based on the sensed displacement of the operating member. 5. The method of claim 2, wherein the varying comprises changing a torque output by the actuator, based on the sensed displacement of the operating member. 6. The method of claim 1, wherein the varying comprises varying a frequency of electrical pulses transmitted to the actuator. 7. The method of claim 1, wherein the varying comprises closing a closure member, in response to the sensor sensing that a force output by the actuator exceeds a predetermined maximum force level. 8. The method of claim 1, wherein the varying comprises ceasing displacement of an operating member, and then resuming displacement of the operating member. 9. The method of claim 8, wherein the ceasing displacement is performed when the actuator has displaced the operating member to an equalizing position, in which pressure is equalized across a closure member. 10. The method of claim 9, wherein the resuming displacement is performed when the pressure has equalized across the closure member. 11. The method of claim 9, wherein the resuming is performed in response to a predetermined period of time elapsing from the operating member being displaced to the equalizing position. 12. The method of claim 1, wherein the well tool comprises a safety valve, and wherein the actuator causes a closure member to be alternately opened and closed to thereby respectively permit and prevent flow through the flow passage. 13. The method of claim 1, further comprising providing fluid communication between the chamber and a source of the dielectric fluid via a conduit extending to a remote location, wherein a line extends through the conduit to the actuator in the chamber.
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