Deep set safety valve
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus and methods are provided for actuation of downhole tools. In one example, a deep set safety valve uses a magnetic coupling which permits a portion of the safety valve at control line pressure to be isolated from tubing string internal pressure, without requiring the use of a dynamic seal therebetween. A piston of the safety valve may be displaced in response to a differential between control line pressure and pressure in an annulus surrounding the tubing string, pressure in another control line, or pressure in the tubing string. Other types of well tools may benefit from actuation using principles of the invention.
99 Citations
236 Claims
-
1-10. -10. (canceled)
-
11. A method of actuating a safety valve, the method comprising the steps of:
-
displacing an actuator member of the safety valve; and
translating displacement of the actuator member to displacement of an operating member, the translation being performed across a pressure isolation barrier without the use of any dynamic seal. - View Dependent Claims (17, 18, 19, 20, 142, 219, 220, 221, 222, 223, 224, 225, 226, 227)
-
-
12-16. -16. (canceled)
-
21. A well tool, comprising:
-
an actuator including a piston which displaces in response to a first pressure applied to the piston;
an operating member which displaces to operate the well tool, the operating member having a second pressure applied thereto; and
displacement of the piston being translated into displacement of the operating member while the first and second pressures are isolated from each other, without the use of any dynamic seal isolating the first pressure from the second pressure. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 32, 33, 34, 35, 36, 119, 123, 124, 125)
-
-
30-31. -31. (canceled)
-
37. A method of actuating a well tool in a well, the method comprising the steps of:
-
displacing an actuator member of the well tool, the well tool having a flow passage for flow of fluid therethrough;
translating displacement of the actuator member to displacement of an operating member by use of a magnetic coupling therebetween; and
actuating the well tool in response to displacement of the operating member. - View Dependent Claims (46, 47, 48, 49, 50, 51, 120, 122, 126, 127, 128)
-
-
38-45. -45. (canceled)
-
52-85. -85. (canceled)
-
86. A safety valve, comprising:
-
an actuator including a motor which displaces an actuator member of the safety valve;
an operating member which is displaced to operate the safety valve; and
a magnetic coupling between the actuator member and the operating member. - View Dependent Claims (88, 90, 91, 93, 94, 95)
-
-
87. (canceled)
-
89. (canceled)
-
92. (canceled)
-
96. A method of actuating a safety valve, the method comprising the steps of:
-
displacing an actuator member of the safety valve;
translating displacement of the actuator member to displacement of an operating member, the translation being performed across a rigid pressure isolation barrier without the use of any dynamic seal; and
actuating the safety valve between open and closed positions in response to displacement of the operating member. - View Dependent Claims (102, 103, 104, 105, 143, 228, 229, 230, 231, 232, 233, 234, 235, 236)
-
-
97-101. -101. (canceled)
-
106. A well tool, comprising:
-
a flow passage for flow of fluid therethrough;
an actuator for displacing an actuator member of the well tool;
an operating member which is displaced to operate the well tool; and
a magnetic coupling between the actuator member and the operating member. - View Dependent Claims (107, 121, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140)
-
-
108-118. -118. (canceled)
- 129. The well tool according to claim l06, wherein the well tool is a valve.
-
141. A safety valve, comprising:
-
an actuator having an actuator member;
an operating member which is displaced to operate the safety valve; and
a magnetic coupling between the actuator member and the operating member, wherein the magnetic coupling translates displacement of the actuator member into operating member displacement to thereby operate the safety valve.
-
-
144. A method of completing a well, the method comprising the steps of:
-
positioning a well tool in the well;
displacing an actuator member of the well tool; and
translating displacement of the actuator member to displacement of an operating member of the well tool, the translation being performed across a pressure isolation barrier without use of any dynamic seal. - View Dependent Claims (145, 146, 147, 148, 149, 150, 151, 152, 153, 154)
-
-
155. A method of installing a tubular string in a well, the method comprising the steps of:
-
interconnecting in the tubular string a well tool including an actuator member;
positioning the tubular string in the well; and
translating displacement of the actuator member to displacement of an operating member of the well tool, the translation being performed across a pressure isolation barrier without use of any dynamic seal. - View Dependent Claims (156, 157, 158, 159, 160, 161, 162, 163, 164, 165)
-
-
166. A completion string for use in a well, the completion string comprising:
a well tool interconnected in the completion string, the well tool including an actuator member and an operating member, displacement of the actuator member being translatable into displacement of the operating member across a pressure barrier without use of any dynamic seal. - View Dependent Claims (167, 168, 169, 170, 171, 172, 173, 174, 175, 176)
-
177. A method of completing a well, the method comprising the steps of:
-
positioning a well tool in the well;
displacing an actuator member of the well tool; and
translating displacement of the actuator member into displacement of an operating member of the well tool using a magnetic coupling between the actuator member and the operating member. - View Dependent Claims (178, 179, 180, 181, 182, 183, 184, 185, 186)
-
-
187. A method of installing a tubular string in a well, the method comprising the steps of:
-
interconnecting in the tubular string a well tool including an actuator member;
positioning the tubular string in the well; and
translating displacement of the actuator member into displacement of an operating member of the well tool using a magnetic coupling between the actuator member and the operating member. - View Dependent Claims (188, 189, 190, 191, 192, 193, 194, 195, 196)
-
-
197. A completion string for use in a well, the completion string comprising:
a well tool interconnected in the completion string, the well tool including an actuator member, an operating member, and a magnetic coupling, displacement of the actuator member being translatable into displacement of the operating member using the magnetic coupling. - View Dependent Claims (198, 199, 200, 201, 202, 203, 204, 205, 206)
-
207. A well tool, comprising:
-
a flow passage for flow of fluid through the well tool;
an actuator member; and
an operating member, the actuator member being operable to apply a force to the operating member across a pressure isolation barrier without use of any dynamic seal, wherein the well tool is a packer. - View Dependent Claims (208)
-
-
209. A well tool, comprising:
-
a flow passage for flow of fluid through the well tool;
an actuator member; and
an operating member, the actuator member being operable to apply a force to the operating member across a pressure isolation barrier without use of any dynamic seal, wherein the well tool is a perforating assembly. - View Dependent Claims (210)
-
-
211. A well tool, comprising:
-
a flow passage for flow of fluid through the well tool;
an actuator member; and
an operating member, the actuator member being operable to apply a force to the operating member across a pressure isolation barrier without use of any dynamic seal, wherein the well tool is a choke. - View Dependent Claims (212)
-
-
213. A method of actuating a well tool in a well, the method comprising the steps of:
-
positioning the well tool in the well, the well tool including a flow passage for flow of fluid therethrough, an actuator member, and an operating member; and
actuating the well tool by applying force from the actuator member to the operating member across a pressure isolation barrier without use of any dynamic seal, wherein in the actuating step, the well tool is a packer. - View Dependent Claims (214)
-
-
215. A method of actuating a well tool in a well, the method comprising the steps of:
-
positioning the well tool in the well, the well tool including a flow passage for flow of fluid therethrough, an actuator member, and an operating member; and
actuating the well tool by applying force from the actuator member to the operating member across a pressure isolation barrier without use of any dynamic seal, wherein in the actuating step, the well tool is a perforating assembly. - View Dependent Claims (216)
-
-
217. A method of actuating a well tool in a well, the method comprising the steps of:
-
positioning the well tool in the well, the well tool including a flow passage for flow of fluid therethrough, an actuator member, and an operating member; and
actuating the well tool by applying force from the actuator member to the operating member across a pressure isolation barrier without use of any dynamic seal, wherein in the actuating step, the well tool is a choke. - View Dependent Claims (218)
-
Specification