Select-fire, downhole shockwave generation devices, hydrocarbon wells that include the shockwave generation devices, and methods of utilizing the same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/263
E21B-047/09
E21B-043/25
F42D-001/06
E21B-047/06
E21B-034/06
F42B-003/00
F42B-003/22
F42D-001/045
F42D-001/22
E21B-034/00
출원번호
US-0264076
(2016-09-13)
등록번호
US-10196886
(2019-02-05)
발명자
/ 주소
Tolman, Randy C.
Spiecker, P. Matthew
Lonnes, Steve
출원인 / 주소
ExxonMobil Upstream Research Company
대리인 / 주소
ExxonMobil Upstream Research Company—Law Department
인용정보
피인용 횟수 :
0인용 특허 :
31
초록▼
Select-fire, downhole shockwave generation devices, hydrocarbon wells that include the shockwave generation devices, and methods of utilizing the same are disclosed herein. The shockwave generation devices are configured to generate a shockwave within a wellbore fluid that extends within a tubular c
Select-fire, downhole shockwave generation devices, hydrocarbon wells that include the shockwave generation devices, and methods of utilizing the same are disclosed herein. The shockwave generation devices are configured to generate a shockwave within a wellbore fluid that extends within a tubular conduit of a wellbore tubular. The shockwave generation devices include a core, a plurality of explosive charges arranged on an external surface of the core, and a plurality of triggering devices. Each of the plurality of triggering devices is associated with a selected one of the plurality of explosive charges and is configured to selectively initiate explosion of the selected one of the plurality of explosive charges. The methods include methods of generating a shockwave utilizing the downhole shockwave generation devices.
대표청구항▼
1. A select-fire, downhole shockwave generation device configured to generate a shockwave within a wellbore fluid extending within a tubular conduit, wherein the tubular conduit is defined by a wellbore tubular that extends within a wellbore, the device comprising: a core;a plurality of explosive ch
1. A select-fire, downhole shockwave generation device configured to generate a shockwave within a wellbore fluid extending within a tubular conduit, wherein the tubular conduit is defined by a wellbore tubular that extends within a wellbore, the device comprising: a core;a plurality of explosive charges arranged on an external surface of the core; anda plurality of triggering devices, wherein each of the plurality of triggering devices is configured to selectively initiate explosion of a selected one of the plurality of explosive charges;wherein the plurality of explosive charges is sized such that the shockwave exhibits greater than a threshold shockwave intensity within the tubular conduit over a maximum effective distance of 4 meters along a length of the tubular conduit. 2. The device of claim 1, wherein the core includes a metallic rod, and further wherein the plurality of explosive charges includes a plurality of lengths of primer cord wrapped around the external surface of the metallic rod. 3. The device of claim 1, wherein the plurality of explosive charges is a first plurality of explosive charges, wherein the plurality of triggering devices is a first plurality of triggering devices, wherein the first plurality of explosive charges and the first plurality of triggering devices together define a first shockwave generation unit, and wherein the shockwave generation device further includes a second shockwave generation unit that includes a second plurality of explosive charges and a second plurality of triggering devices, and further wherein an end region of the first shockwave generation unit is operatively attached to an end region of the second shockwave generation unit such that a longitudinal axis of the first shockwave generation unit is aligned with a longitudinal axis of the second shockwave generation unit. 4. The device of claim 1, wherein the core includes at least one of: (i) an elongate core;(ii) a rigid core;(iii) a metallic core;(iv) a solid core; and(v) an elongate rigid rod. 5. The device of claim 1, wherein the core includes a plurality of flutes, and further wherein each of the plurality of flutes at least partially contains a respective one of the plurality of explosive charges. 6. The device of claim 5, wherein the external surface of the core defines each of the plurality of flutes. 7. The device of claim 5, wherein each of the plurality of flutes includes a respective recess, which is defined by the core, and an opening that provides access to the recess, and wherein the recess is an elongate recess, and wherein the opening is an elongate opening and further wherein a respective explosive charge extends within each recess and does not project through the opening. 8. The device of claim 5, wherein the plurality of flutes includes a plurality of spiraling flutes that spirals along a longitudinal axis of the core. 9. The device of claim 5, wherein the plurality of flutes includes a plurality of circumferential flutes, wherein each of the plurality of circumferential flutes extends at least partially around a transverse cross section of the core. 10. The device of claim 1, wherein, when the downhole shockwave generation device is immersed within the wellbore fluid, at least a portion of each of the plurality of explosive charges is exposed to the wellbore fluid. 11. The device of claim 1, wherein the plurality of explosive charges includes a plurality of lengths of primer cord. 12. The device of claim 11, wherein each of the plurality of lengths of primer cord has a corresponding length between 0.5 meters and 3 meters. 13. The device of claim 11, wherein each of the plurality of lengths of primer cord includes 100 to 800 grains of gunpowder per meter of length. 14. The device of claim 1, wherein the shockwave generation device further includes a protective barrier configured to at least partially isolate each of the plurality of explosive charges from the wellbore fluid. 15. The device of claim 1, wherein the plurality of triggering devices includes a plurality of blast caps. 16. The device of claim 1, wherein each of the plurality of triggering devices is configured to initiate explosion of the selected one of the plurality of explosive charges independent from a remainder of the plurality of explosive charges. 17. The device of claim 1, wherein the plurality of triggering devices forms a portion of a triggering assembly that is operatively attached to the core. 18. The device of claim 17, wherein each of the plurality of triggering devices includes a uniquely addressed switch configured to initiate explosion of the selected one of the plurality of explosive charges responsive to receipt of a unique code, wherein a unique code of each of the plurality of triggering devices is different from a unique code of a remainder of the plurality of triggering devices. 19. The device of claim 1, wherein the plurality of explosive charges is sized such that the shockwave has sufficient energy to transition a first selective stimulation port, which is operatively attached to the wellbore tubular and less than 2 meters from the shockwave generation device when the shockwave generation device generates the shockwave, from a closed state to an open state but insufficient energy to transition a second selective stimulation port, which is operatively attached to the wellbore tubular and greater than 2 meters from the shockwave generation device when the shockwave generation device generates the shockwave, from the closed state to the open state. 20. The device of claim 1, wherein the shockwave generation device further includes a detector and further wherein the detector is configured to detect a location of the shockwave generation device within the wellbore tubular. 21. The device of claim 20, wherein the detector includes at least one of: (i) a casing collar detector configured to detect a casing collar of the wellbore tubular;(ii) a magnetic field detector configured to detect a magnetic field that emanates from a magnetic material that defines a portion of the wellbore tubular;(iii) a radioactivity detector configured to detect a radioactive material that defines a portion of the wellbore tubular;(iv) a depth detector configured to detect a depth of the shockwave generation device within the tubular conduit;(v) a speed detector configured to detect a speed of the shockwave generation device within the tubular conduit;(vi) a timer configured to measure a time associated with motion of the shockwave generation device within the tubular conduit;(vii) a downhole pressure sensor configured to detect a pressure within the wellbore fluid that is proximal thereto; and(viii) a downhole temperature sensor configured to detect a temperature within the wellbore fluid that is proximal thereto. 22. The device of claim 20, wherein the shockwave generation device further includes a controller programmed to control an operation of the shockwave generation device. 23. The device of claim 22, wherein the shockwave generation device includes a communication linkage between the controller and the detector, wherein the detector is configured to generate a location signal indicative of the location of the shockwave generation device within the wellbore tubular and to convey the location signal to the controller via the communication linkage, and further wherein the controller is programmed to control the operation of the shockwave generation device based, at least in part, on the location signal, and wherein the controller is programmed to actuate a selected one of the plurality of triggering devices to initiate explosion of a corresponding one of the plurality of explosive charges based, at least in part, on the location signal. 24. The device of claim 22, wherein the controller is programmed to actuate a selected one of the plurality of triggering devices to initiate explosion of a corresponding one of the plurality of explosive charges responsive to receipt of a triggering signal, and wherein the wellbore includes a downhole wireless communication network. 25. The device of claim 22, wherein the controller is programmed to receive a triggering signal from a downhole wireless communication network, and wherein the shockwave generation device is an umbilical-attached shockwave generation device attached to an umbilical, and further wherein the controller is programmed to receive the triggering signal via the umbilical. 26. The device of claim 1, wherein the shockwave generation device further includes a ball sealer holder configured to selectively release a ball sealer. 27. A method of generating a plurality of shockwaves within a wellbore fluid extending within a tubular conduit, wherein the tubular conduit is defined by a wellbore tubular that extends within a wellbore, the method comprising: positioning the select-fire, downhole shockwave generation device of claim 1 within a first region of the tubular conduit;actuating a first triggering device of the plurality of triggering devices to initiate explosion of a first explosive charge of the plurality of explosive charges and to generate a first shockwave within the first region of the tubular conduit;moving the shockwave generation device to a second region of the tubular conduit that is spaced-apart from the first region of the tubular conduit; andactuating a second triggering device of the plurality of triggering devices to initiate explosion of a second explosive charge of the plurality of explosive charges and to generate a second shockwave within the second region of the tubular conduit;wherein the wellbore tubular includes a plurality of selective stimulation ports (SSPs) including a first SSP and a second SSP, wherein each of the plurality of SSPs is configured to transition from a respective closed state, in which the SSP resists fluid flow therethrough, to an open state, in which the SSP permits fluid flow therethrough, responsive to receipt of a respective shockwave, wherein the method includes transitioning the first SSP from a closed state to an open state responsive to receipt of the first shockwave by the first SSP, and further wherein the method includes transitioning the second SSP from the closed state to the open state responsive to receipt of the second shockwave by the second SSP. 28. The method of claim 27, wherein the method further includes detecting that the shockwave generation device is within the first region of the tubular conduit, and wherein the actuating the first triggering device is at least partially responsive to the detecting that the shockwave generation device is within the first region of the tubular conduit, and wherein the method further includes detecting that the shockwave generation device is within the second region of the tubular conduit, and further wherein the actuating the second triggering device is at least partially responsive to the detecting that the shockwave generation devices is within the second region of the tubular conduit. 29. The method of claim 27, wherein, prior to the actuating the first triggering device, the method further includes pressurizing the tubular conduit with a stimulant fluid, and further wherein the method includes stimulating a first region of a subterranean formation, which is proximal the first region of the tubular conduit, responsive to the actuating the first triggering device.
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이 특허에 인용된 특허 (31)
Streich Steven G. ; Navarette Mike ; Weaver Jimmie D. ; Giroux Richard L. ; Szarka David D., Apparatus and method for opening perforations in a well casing.
Randy C. Tolman ; Lawrence O. Carlson ; David A. Kinison ; Kris J. Nygaard ; Glenn S. Goss ; William A. Sorem ; Lee L. Shafer, Method and apparatus for stimulation of multiple formation intervals.
Tolman, Randy C.; Carlson, Lawrence O.; Kinison, David A.; Nygaard, Kris J.; Goss, Glenn S.; Sorem, William A.; Shafer, Lee L., Method and apparatus for stimulation of multiple formation intervals.
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