WO2013006159A1 - Well tool actuator and isolation valve for use in drilling operations - Google Patents
Well tool actuator and isolation valve for use in drilling operations Download PDFInfo
- Publication number
- WO2013006159A1 WO2013006159A1 PCT/US2011/042836 US2011042836W WO2013006159A1 WO 2013006159 A1 WO2013006159 A1 WO 2013006159A1 US 2011042836 W US2011042836 W US 2011042836W WO 2013006159 A1 WO2013006159 A1 WO 2013006159A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- isolation valve
- opened
- chambers
- succession
- Prior art date
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 107
- 238000005553 drilling Methods 0.000 title claims abstract description 36
- 230000004044 response Effects 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003832 thermite Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/05—Flapper valves
Definitions
- This disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, in an embodiment described herein, more
- An isolation valve can be used in a drilling operation for various purposes, such as, to prevent a formation from being exposed to pressures in a wellbore above the valve, to allow a drill string to be tripped into and out of the wellbore conventionally, to prevent escape of fluids (e.g., gas, etc.) from the formation during tripping of the drill string, etc. Therefore, it will be appreciated that
- FIG. 1 is a representative partially cross-sectional view of a well system and associated method which can embody principles of this disclosure.
- FIG. 2 is a representative quarter-sectional view of a drilling isolation valve which may be used in the system and method of FIG. 1, and which can embody principles of this disclosure .
- FIG. 3 is a representative quarter-sectional view of the drilling isolation valve actuated to a closed
- FIG. 4 is a representative quarter-sectional view of the drilling isolation valve actuated to an open
- FIG. 4A is a representative quarter-sectional view of another example of the drilling isolation valve.
- FIGS. 5A & B are representative quarter-sectional views of another example of the drilling isolation valve in open and closed configurations thereof.
- FIG. 1 Representatively illustrated in FIG. 1 is a well system 10 and associated method which can embody principles of this disclosure.
- a wellbore 12 is lined with a casing string 14 and cement 16.
- a drill string 18 having a drill bit 20 on an end thereof is used to drill an uncased section 22 of the wellbore 12 below the casing string 14.
- a drilling isolation valve 24 is interconnected in the casing string 14.
- the isolation valve 24 includes a closure 26, which is used to selectively permit and prevent fluid flow through a passage 28 extending through the casing string 14 and into the uncased section 22.
- an earth formation 30 intersected by the uncased section 22 can be isolated from pressure and fluid in the wellbore 12 above the closure 26.
- the closure 26 is opened, thereby allowing the drill string to pass through the isolation valve 24.
- the closure 26 comprises a flapper-type pivoting member which engages a seat 32 to seal off the passage 28.
- the closure 26 could comprise a rotating ball, or another type of closure .
- the scope of this disclosure is not limited to any of the other details of the well system 10 or isolation valve 24 as described herein or depicted in the drawings.
- the wellbore 12 could be horizontal or inclined near the isolation valve 24 (instead of vertical as depicted in FIG. 1), the isolation valve could be interconnected in a liner string which is hung in the casing string 14, it is not necessary for the casing string to be cemented in the wellbore at the isolation valve, etc.
- the well system 10 and isolation valve 24 are provided merely as examples of how the principles of this disclosure can be utilized, and these examples are not to be considered as limiting the scope of this disclosure.
- FIG. 2 an enlarged scale quarter-sectional view of one example of the isolation valve 24 is representatively illustrated.
- the isolation valve 24 of FIG. 2 may be used in the well system 10 of FIG. 1, or it may be used in other well systems in keeping with the principles of this disclosure.
- the isolation valve 24 is in an open configuration as depicted in FIG. 2.
- the drill string 18 can be extended through the isolation valve 24, for example, to further drill the uncased section 22.
- the isolation valve 24 can be opened for other purposes (such as, to install a liner in the uncased section 22, to perform a formation test, etc.) in keeping with the scope of this disclosure.
- an actuator 33 of the valve includes a sensor 34 which is used to detect acoustic signals produced by movement of the drill string 18 (or another object in the wellbore 12, such as a liner string, etc.). The movement which produces the
- acoustic signals may comprise reciprocation or axial
- a predetermined pattern of drill string 18 manipulations will produce a corresponding predetermined pattern of acoustic signals, which are detected by the sensor 34.
- electronic circuitry 36 actuates one of a series of valves 38a-f.
- Each of the valves 38a-f is selectively openable to provide fluid communication between a passage 40 and a respective one of multiple chambers 42a-f.
- the chambers 42a- f are preferably initially at a relatively low pressure (such as atmospheric pressure) compared to well pressure at the location of installation of the isolation valve 24 in a well.
- the chambers 42a-f are also preferably initially filled with air, nitrogen or another inert gas, etc.
- a piston 44 separates two fluid-filled chambers 46, 48.
- the chamber 46 is in communication with the passage 40.
- the chamber 48 Upon installation, the chamber 48 is in communication with well pressure in the passage 28 via an opening 50a, which is aligned with an opening 52 in a tubular mandrel 54. Thus, the chamber 48 is pressurized to well pressure when the isolation valve 24 is installed in the well.
- the chamber 48 is in communication with another chamber 56.
- This chamber 56 is separated from another chamber 58 by a piston 60.
- the chamber 58 is preferably at a relatively low pressure (such as atmospheric pressure), and is
- the piston 60 is attached to a sleeve 62 which, in its position as depicted in FIG. 2, maintains the closure 26 in its open position. However, if the sleeve 62 is displaced to the left as viewed in FIG. 2, the closure 26 can pivot to its closed position (and preferably does so with the aid of a biasing device, such as a spring (not shown)).
- a biasing device such as a spring (not shown)
- the piston 60 In order to displace the sleeve 62 to the left, the piston 60 is displaced to the left by reducing pressure in the chamber 56.
- the pressure in the chamber 56 does not have to be reduced below the relatively low pressure in the chamber 58, since preferably the piston 60 area exposed to the chamber 56 is greater than the piston area exposed to the chamber 58, as depicted in FIG. 2, and so well pressure will assist in biasing the sleeve 62 to the left when pressure in the chamber 56 is sufficiently reduced.
- the piston 44 is displaced to the left as viewed in FIG. 2, thereby also displacing a sleeve 64 attached to the piston 44.
- the sleeve 64 has the opening 50a (as well as additional openings 50b, c) formed therein.
- the piston 44, sleeve 64 and opening 52 in the mandrel 54 comprise a control valve 65 which selectively permits and prevents fluid communication between the passage 28 and the chamber 48.
- valve 38a is opened by the electronic circuitry 36. Opening the valve 38a provides fluid
- the valves 38a-f are preferably openable in response to application of a relatively small amount of electrical power.
- the electrical power to open the valves 38a-f and operate the sensor 34 and electronic circuitry 36 can be provided by a battery 66, and/or by a downhole electrical power generator, etc.
- valves 38a-f are Suitable valves for use as the valves 38a-f.
- valves such as, solenoid operated valves, spool valves, etc.
- a preferred type of valve uses thermite to degrade a rupture disk or other relatively thin pressure barrier.
- FIG. 3 the isolation valve 24 is representatively illustrated after the valve 38a has been opened in response to the acoustic sensor 34 detecting the predetermined pattern of acoustic signals resulting from manipulation of the drill string 18. Note that the piston 44 and sleeve 64 have displaced to the left due to pressure in the chamber 46 being reduced, and the piston 60 and sleeve 62 have displaced to the left due to pressure in the chamber 56 being reduced.
- closure 26 is no longer maintained in its FIG. 2 open position, and is pivoted inward, so that it now seals off the passage 28. In this configuration, the formation 30 is isolated from the wellbore 12 above the isolation valve 24.
- the isolation valve 24 can be re-opened by again producing a predetermined pattern of acoustic signals by manipulation of the drill string 18, thereby causing the electronic circuitry 36 to open the next valve 38b. A resulting reduction in pressure in the chamber 46 will cause the piston 44 and sleeve 64 to displace to the left as viewed in FIG. 3.
- the predetermined pattern of acoustic signals used to open the isolation valve 24 can be different from, or the same as, the predetermined pattern of acoustic signals used to close the isolation valve.
- the isolation valve 24 is representatively illustrated after the valve 38b has been opened in response to the acoustic sensor 34 detecting the predetermined pattern of acoustic signals resulting from manipulation of the drill string 18.
- the piston 44 and sleeve 64 have displaced to the left due to pressure in the chamber 46 being reduced, and the piston 60 and sleeve 62 have displaced to the right due to pressure in the chamber 56 being increased.
- Pressure in the chamber 56 is increased due to the opening 50b aligning with the opening 52 in the mandrel 54, thereby admitting well pressure to the chamber 48, which is in communication with the chamber 56.
- Valve 38c can now be opened, in order to again close the isolation valve 24. Then, valve 38d can be opened to open the isolation valve 24, valve 38e can be opened to close the isolation valve, and valve 38f can be opened to open the isolation valve.
- valves and chambers may be used to provide any number of opening and closing cycles, as desired.
- the sleeve 64 can also be configured to provide any desired number of opening and closing cycles.
- valve 38a-f it is not necessary in the example of FIGS. 2-4 for the valves 38a-f to be opened in any particular order. Thus, valve 38a does not have to be opened first, and valve 38f does not have to be opened last, to actuate the isolation valve 24. Each of the valves 38a-f is in
- FIG. 4A representatively illustrated in FIG. 4A is another example of the isolation valve 24, in which the valves 38a-f are opened in series, in order from valve 38a to valve 38f, to actuate the isolation valve.
- Each of valves 38b-f is only placed in communication with the passage 40 when all of its predecessor valves have been opened. Only valve 38a is initially in communication with the passage 40.
- the drill string 18 itself is used to transmit signals to the isolation valve, to thereby actuate the isolation valve.
- the drill string 18 can be displaced axially, rotationally, or in any combination of manipulations, to thereby transmit acoustic signals to an actuator 33 of the isolation valve 24.
- the isolation valve 24 would typically be closed, in order to isolate the formation 30 from the wellbore above the isolation valve.
- the drill string 18 is within a certain distance of the isolation valve 24, the drill string is manipulated in a manner such that a
- the sensor 34 detects acoustic signals in the downhole environment. If the predetermined pattern of acoustic signals is detected by the sensor 34, the electronic
- circuitry 36 causes one of the valves 38a-f to be opened.
- the valves 38a-f are opened in succession, with one valve being opened each time the predetermined pattern of acoustic signals is detected.
- acoustic signaling techniques known as
- HALSONICS(TM) , SURFCOM(TM) and PICO SHORT HOP(TM) are utilized by Halliburton Energy Services, Inc.
- the valve 24 is opened.
- the drill string 18 can now be extended through the passage 28 in the valve 24, and drilling of the uncased section 22 can proceed.
- the drill string 18 When it is time to trip the drill string 18 out of the wellbore 12, the drill string is raised to within a certain distance above the isolation valve 24. Then, the drill string 18 is manipulated in such a manner that the
- the isolation valve 24 is closed (e.g., by opening another one of the valves 38a-f).
- the drill string 18 can now be tripped out of the well, with the closed isolation valve 24 isolating the formation 30 from the wellbore 12 above the isolation valve.
- isolation valve 24 it should be understood that other methods of operating the isolation valve 24 are within the scope of this disclosure. For example, it is not necessary for the same predetermined pattern of acoustic signals to be used for both opening and closing the isolation valve 24.
- one pattern of acoustic signals could be used for opening the isolation valve 24, and another pattern could be used for closing the isolation valve.
- the pattern of acoustic signals could be produced by alternately flowing and not flowing fluid, by altering circulation, by use of a remote acoustic generator, etc.
- the actuator 33 it is not necessary for the actuator 33 to respond to acoustic signals. Instead, other types of signals (such as, electromagnetic signals, pressure pulses, annulus or passage 28 pressure changes, etc.) could be used to operate the isolation valve 24.
- signals such as, electromagnetic signals, pressure pulses, annulus or passage 28 pressure changes, etc.
- the senor 34 is not necessarily an acoustic sensor.
- the sensor 34 could be a pressure sensor, an accelerometer, a flowmeter, an antenna, or any other type of sensor.
- FIGS. 5A & B another example of the isolation valve 24 is representatively illustrated.
- the isolation valve 24 is depicted in an open configuration in FIG. 5A, and in a closed configuration in FIG. 5B.
- FIGS. 5A & B For illustrative clarity, only a lower section of the isolation valve 24 is shown in FIGS. 5A & B.
- An upper section of the isolation valve 24 is similar to that shown in FIGS. 3-4, with the upper section including the sensor 34, electronic circuitry 36, valves 38a-f, chambers 42a-f, etc .
- the chamber 58 is exposed to well pressure in the passage 28 via a port 70 in the sleeve 62.
- a biasing device 72 (such as a spring, etc.) biases the piston 60 toward its open position as depicted in FIG. 5A.
- the piston 60 is pressure-balanced.
- the device 72 can displace the piston 60 and sleeve 62 to their open position, with the closure 26 pivoted outward, so that flow is permitted through the passage 28 as depicted in FIG. 5A.
- the piston 44 and sleeve 64 displace to the left (as viewed in FIGS. 5A & B), and the chambers 48, 56 are isolated from the passage 28, a resulting pressure
- isolation valve 24 described above can be operated by manipulating the drill string 18 in the wellbore 12, thereby transmitting
- the isolation valve 24 may be opened and closed multiple times in response to the sensor 34 detecting such acoustic signal patterns. Other methods of operating the isolation valve 24 are also described above.
- a drilling isolation valve 24 which can comprise an actuator 33 including a series of chambers 42a-f which, when opened in succession, cause the isolation valve 24 to be alternately opened and closed.
- the drilling isolation valve 24 can also include a control valve 65 which alternately exposes a piston 60 to well pressure and isolates the piston 60 from well pressure in response to the chambers 42a-f being opened in succession (i.e., each following another, but not necessarily in a particular order) .
- the control valve 65 may comprise a sleeve 64 which displaces incrementally in response to the chambers 42a-f being opened in succession.
- the actuator 33 can include a sensor 34.
- the chambers 42a-f may be opened in succession in response to detection of predetermined acoustic signals by the sensor 34.
- the chambers 42a-f may be opened in succession in response to detection of drill string 18 movement by the sensor 34.
- the sensor 34 may comprise an acoustic sensor.
- the method may include
- isolation valve 24 operating between open and closed
- the manipulating may comprise axially displacing the object, and/or rotating the object.
- a series of chambers 42a-f of the drilling isolation valve 24 may be opened in succession (i.e., each following another, but not necessarily in a particular order) in response to the sensor 34 detecting respective predetermined patterns of the object manipulation.
- the drilling isolation valve 24 may alternately open and close in response to the chambers 42a-f being opened in succession.
- a control valve 65 may alternately expose a piston 60 to well pressure and isolate the piston 60 from well pressure in response to the chambers 42a-f being opened in succession.
- the sensor 34 can comprise an acoustic sensor.
- the object manipulation may include transmitting a predetermined acoustic signal to the sensor 34.
- the object can comprise the drill string 18.
- the above disclosure also provides to the art a well system 10.
- the well system 10 can include a drill string 18 positioned in a wellbore 12, and a drilling isolation valve 24 which selectively permits and prevents fluid flow through a passage 28 extending through a tubular casing string 14, the isolation valve 24 including a sensor 34 which senses manipulation of the drill string 18 in the tubular string 14, whereby the isolation valve 24 actuates in response to the sensor 34 detecting a predetermined pattern of the drill string 18 manipulation.
- the isolation valve 24 can include a series of chambers 42a-f which, when opened in succession (i.e., each following another, but not necessarily in a particular order), cause the isolation valve 24 to be alternately opened and closed.
- the isolation valve 24 may further include a control valve 65 which alternately exposes a piston 60 to well pressure and isolates the piston 60 from well pressure, in response to the chambers 42a-f being opened in succession.
- the chambers 42a-f may be opened in succession in response to detection of predetermined acoustic signals by the sensor 34, and/or in response to detection of the predetermined pattern of the drill string 18 manipulation.
- isolation valve 24 which is actuated in response to opening the chambers 42a-f.
- the actuator 33 could be used for actuating other types of valves and other types of well tools (e.g., packers, chokes, etc.). Therefore, it should be clearly understood that the scope of this disclosure is not limited to isolation valves, but instead encompasses
- a well tool actuator 33 which can include a series of chambers 42a-f that, when opened in succession, cause the well tool (such as the isolation valve 24, a packer, a choke or other flow control device, etc.) to be alternately actuated.
- the above disclosure also provides to the art a method of operating a well tool actuator 33.
- the method can include manipulating an object (such as, the drill string 18, etc.) in a wellbore 12, a sensor 34 of the actuator 33 detecting the object manipulation, and the actuator 33 actuating in response to the sensor 34 detecting the object manipulation.
- an object such as, the drill string 18, etc.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2013015041A MX2013015041A (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations. |
CA2837180A CA2837180A1 (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations |
EP11868960.3A EP2726700A4 (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations |
AU2011372531A AU2011372531B2 (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations |
PCT/US2011/042836 WO2013006159A1 (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations |
US13/490,936 US8757274B2 (en) | 2011-07-01 | 2012-06-07 | Well tool actuator and isolation valve for use in drilling operations |
SA112330667A SA112330667B1 (en) | 2011-07-01 | 2012-07-01 | Well tool actuator and isolation valve for use in drilling operations |
US14/264,122 US10202824B2 (en) | 2011-07-01 | 2014-04-29 | Well tool actuator and isolation valve for use in drilling operations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2011/042836 WO2013006159A1 (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013006159A1 true WO2013006159A1 (en) | 2013-01-10 |
Family
ID=47437307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/042836 WO2013006159A1 (en) | 2011-07-01 | 2011-07-01 | Well tool actuator and isolation valve for use in drilling operations |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2726700A4 (en) |
AU (1) | AU2011372531B2 (en) |
CA (1) | CA2837180A1 (en) |
MX (1) | MX2013015041A (en) |
SA (1) | SA112330667B1 (en) |
WO (1) | WO2013006159A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022032016A1 (en) * | 2020-08-06 | 2022-02-10 | Saudi Arabian Oil Company | Sensored electronic valve for drilling and workover applications |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3268831B1 (en) | 2015-03-12 | 2020-09-02 | NCS Multistage Inc. | Electrically actuated downhole flow control apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030098157A1 (en) * | 2001-11-28 | 2003-05-29 | Hales John H. | Electromagnetic telemetry actuated firing system for well perforating gun |
US20070012457A1 (en) * | 2005-07-13 | 2007-01-18 | Curtis Fredrick D | Underbalanced drilling applications hydraulically operated formation isolation valve |
US20070034371A1 (en) * | 2005-07-22 | 2007-02-15 | Moyes Peter B | Downhole actuation tool |
US20100212891A1 (en) * | 2009-02-20 | 2010-08-26 | Halliburton Energy Services, Inc. | Swellable Material Activation and Monitoring in a Subterranean Well |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5101907A (en) * | 1991-02-20 | 1992-04-07 | Halliburton Company | Differential actuating system for downhole tools |
US5279363A (en) * | 1991-07-15 | 1994-01-18 | Halliburton Company | Shut-in tools |
US7201230B2 (en) * | 2003-05-15 | 2007-04-10 | Halliburton Energy Services, Inc. | Hydraulic control and actuation system for downhole tools |
US7640989B2 (en) * | 2006-08-31 | 2010-01-05 | Halliburton Energy Services, Inc. | Electrically operated well tools |
US7730953B2 (en) * | 2008-02-29 | 2010-06-08 | Baker Hughes Incorporated | Multi-cycle single line switch |
-
2011
- 2011-07-01 AU AU2011372531A patent/AU2011372531B2/en not_active Ceased
- 2011-07-01 CA CA2837180A patent/CA2837180A1/en not_active Abandoned
- 2011-07-01 WO PCT/US2011/042836 patent/WO2013006159A1/en active Application Filing
- 2011-07-01 MX MX2013015041A patent/MX2013015041A/en not_active Application Discontinuation
- 2011-07-01 EP EP11868960.3A patent/EP2726700A4/en not_active Withdrawn
-
2012
- 2012-07-01 SA SA112330667A patent/SA112330667B1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030098157A1 (en) * | 2001-11-28 | 2003-05-29 | Hales John H. | Electromagnetic telemetry actuated firing system for well perforating gun |
US20070012457A1 (en) * | 2005-07-13 | 2007-01-18 | Curtis Fredrick D | Underbalanced drilling applications hydraulically operated formation isolation valve |
US20070034371A1 (en) * | 2005-07-22 | 2007-02-15 | Moyes Peter B | Downhole actuation tool |
US20100212891A1 (en) * | 2009-02-20 | 2010-08-26 | Halliburton Energy Services, Inc. | Swellable Material Activation and Monitoring in a Subterranean Well |
Non-Patent Citations (1)
Title |
---|
See also references of EP2726700A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022032016A1 (en) * | 2020-08-06 | 2022-02-10 | Saudi Arabian Oil Company | Sensored electronic valve for drilling and workover applications |
US11286747B2 (en) | 2020-08-06 | 2022-03-29 | Saudi Arabian Oil Company | Sensored electronic valve for drilling and workover applications |
Also Published As
Publication number | Publication date |
---|---|
AU2011372531B2 (en) | 2016-04-28 |
CA2837180A1 (en) | 2013-01-10 |
EP2726700A4 (en) | 2016-11-23 |
AU2011372531A1 (en) | 2013-12-19 |
EP2726700A1 (en) | 2014-05-07 |
MX2013015041A (en) | 2014-02-17 |
SA112330667B1 (en) | 2015-12-07 |
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