Stimulation methods and apparatuses utilizing downhole tools
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/14
E21B-043/263
F42D-001/045
F42D-001/08
F42D-003/06
출원번호
US-0272054
(2016-09-21)
등록번호
US-9896920
(2018-02-20)
발명자
/ 주소
Holder, Barry Kent
출원인 / 주소
Superior Energy Services, LLC
대리인 / 주소
Jones Walker LLP
인용정보
피인용 횟수 :
0인용 특허 :
49
초록▼
A method of stimulating a subterranean formation. The method begins with positioning a stimulation tool into a wellbore formed through the formation. The stimulation tool includes (i) at least one tubular segment; (ii) an outer sleeve positioned on the tubular segment and forming an annular space be
A method of stimulating a subterranean formation. The method begins with positioning a stimulation tool into a wellbore formed through the formation. The stimulation tool includes (i) at least one tubular segment; (ii) an outer sleeve positioned on the tubular segment and forming an annular space between the tubular segment and the outer sleeve; (iii) a propellant positioned within the annular space; (iv) at least one ignitor positioned to ignite the propellant; (v) at least one rupture disc positioned within a wall of the tubular segment; and (vi) the absence of a detonator for detonating the propellant. Thereafter, the propellant is ignited to begin deflagration of the propellant.
대표청구항▼
1. A method of stimulating a subterranean formation comprising the steps of: a. positioning a stimulation tool into a wellbore formed through the formation, the stimulation tool comprising: (i) at least one tubular segment;(ii) an outer sleeve positioned on the tubular segment and forming an annular
1. A method of stimulating a subterranean formation comprising the steps of: a. positioning a stimulation tool into a wellbore formed through the formation, the stimulation tool comprising: (i) at least one tubular segment;(ii) an outer sleeve positioned on the tubular segment and forming an annular space between the tubular segment and the outer sleeve;(iii) a propellant positioned within the annular space;(iv) at least one ignitor positioned to ignite the propellant;(v) at least one rupture disc positioned within a wall of the tubular segment;(vi) the absence of a detonator for detonating the propellant;b. igniting the propellant to begin deflagration of the propellant. 2. The method of stimulating according to claim 1, wherein the stimulation tool further includes a first ignitor positioned within the propellant approximate a first end of the sleeve and a second ignitor positioned within the propellant approximate a second end of the sleeve. 3. The method of stimulating according to claim 2, wherein the first igniter and second igniter are ignited within 5 msecs of one another. 4. The method of stimulating according to claim 2, wherein the propellant within the sleeve forms a continuous propellant mass from the first end of the sleeve to the second end of the sleeve. 5. The method of stimulating according to claim 2, further comprising a third igniter positioned in contact with the propellant between the first igniter and the second igniter. 6. The method of stimulating according to claim 1, wherein the propellant has a burn velocity of between about 8,000 ft/sec and about 10,000 ft/sec under formation conditions during its deflagration. 7. The method of stimulating according to claim 1, wherein the rupture disc is a burst disc configured to rupture from pressure created during burning of the propellant. 8. The method of stimulating according to claim 7, wherein a the tubular segment is flooded with a liquid at the time of ignition. 9. The method of stimulating according to claim 1, wherein the ignitor is an electrically ignitable titanium perchlorate igniter. 10. The method of stimulating according to claim 1, wherein the propellant and the ignitor are configured to cause deflagration of substantially all the propellant without detonation of the propellant. 11. The method of stimulating according to claim 1, wherein the rupture disc is configured to fail at a pressure of between about 500 psi and about 11000 psi. 12. The method of stimulating according to claim 1, wherein the stimulation tool is cemented into the wellbore after positioning. 13. The method of stimulating according to claim 1, wherein the propellant is at least one of (i) a composite propellant, (ii) an extruded composite propellant, (iii) an aluminize composite propellant, or (iv) an isocyanate cured HTPB with perchlorates. 14. A method of stimulating a subterranean formation comprising the steps of: a. positioning a stimulation tool into a wellbore formed through the formation, the stimulation tool comprising: (i) at least one tubular segment;(ii) an outer sleeve positioned on the tubular segment;(iii) a propellant positioned within the sleeve;(iv) an ignitor positioned to ignite the propellant;(v) a detonator positioned to detonate the propellant;b. igniting the propellant to begin deflagration of the propellant;c. detonating the propellant between about 5 ms to about 400 ms after igniting the propellant. 15. The method of stimulating according to claim 14, wherein the tubular segment includes at least one burst disc configure to rupture during ignition or detonation of the propellant. 16. The method of stimulating according to claim 15, wherein the tubular segment is flooded with a liquid at the time of ignition and detonation. 17. The method of stimulating according to claim 16, wherein the liquid in the tubular is place under a positive pressure greater than hydrostatic pressure. 18. The method of stimulating according to claim 14, wherein the propellant is at least one of (i) a composite propellant, (ii) an extruded composite propellant, (iii) an aluminize composite propellant, or (iv) an isocyanate cured HTPB with perchlorates. 19. The method of stimulating according to claim 14, wherein each of the igniter and the detonator have an electronic card with a controller and a transceiver or receiver. 20. The method of stimulating according to claim 19, further comprising the step of introducing an intelligent plug into the tubular segment wherein the plug includes a controller and a transceiver or transmitter and the plug transmits a signal to each of the igniter and the detonator which establishes the ignition and detonation sequence. 21. The method of stimulating according to claim 14, wherein the propellant is detonated about 5 ms to about 200 ms after igniting the propellant. 22. The method of stimulating according to claim 14, wherein the propellant has a burn velocity of between about 500 ft/sec and about 3000 ft/sec during its deflagration. 23. The method of stimulating according to claim 22, wherein the propellant has a burn velocity of between about 5000 ft/sec and about 10,000 ft/sec after its detonation. 24. The method of stimulating according to claim 22, wherein the stimulation tool is cemented into the wellbore after positioning. 25. The method of stimulating according to claim 14, wherein the stimulation tool is cemented into the wellbore after positioning. 26. A method of stimulating a subterranean formation comprising the steps of: a. positioning a stimulation tool into a wellbore formed through the formation, the stimulation tool comprising:(i) at least one tubular segment;(ii) an outer sleeve positioned on the tubular segment and forming an annular space between the tubular segment and the outer sleeve;(iii) a propellant positioned within the annular space;(iv) at least one ignitor positioned to ignite the propellant;(v) the absence of a detonator for detonating the propellant;b. igniting the propellant to begin deflagration of the propellant. 27. The method of stimulating according to claim 26, wherein the propellant is at least one of (i) a composite propellant, (ii) an extruded composite propellant, (iii) an aluminize composite propellant, or (iv) an isocyanate cured HTPB with perchlorates.
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