Subterranean formation operations using degradable wellbore isolation devices
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-033/134
E21B-033/12
출원번호
US-0896684
(2015-08-13)
등록번호
US-10125568
(2018-11-13)
국제출원번호
PCT/US2015/044993
(2015-08-13)
국제공개번호
WO2016/032761
(2016-03-03)
발명자
/ 주소
Fripp, Michael Linley
Walton, Zachary William
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
McGuire Woods LLP
인용정보
피인용 횟수 :
0인용 특허 :
16
초록▼
Methods including introducing a frac plug into a wellbore in a subterranean formation, the frac plug comprising at least a mandrel, slips, and a packer element, wherein at least a portion of the mandrel and/or the slips is composed of a degradable alloy selected from the group consisting of a magnes
Methods including introducing a frac plug into a wellbore in a subterranean formation, the frac plug comprising at least a mandrel, slips, and a packer element, wherein at least a portion of the mandrel and/or the slips is composed of a degradable alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof. The wellbore may be a cased wellbore or an open-hole wellbore, and wherein the slips are frictionally engaged with the casing string or the wellbore wall and the packer element is compressed against the casing or the wellbore wall to set the frac plug. One or more perforations is created within the formation and the formation is hydraulically fractured. The frac plug is at least partially degraded upon contact with an electrolyte in the wellbore before or after beginning production of a hydrocarbon.
대표청구항▼
1. A method comprising: (a) introducing a frac plug into a wellbore in a subterranean formation, the frac plug comprising at least a mandrel, slips, and a packer element, wherein: at least a portion of the mandrel and/or the slips is composed of a degradable alloy selected from the group consisting
1. A method comprising: (a) introducing a frac plug into a wellbore in a subterranean formation, the frac plug comprising at least a mandrel, slips, and a packer element, wherein: at least a portion of the mandrel and/or the slips is composed of a degradable alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof; andat least a portion of the frac plug comprises a non-metal degradable material having a same degradation rate as the degradable alloy, the degradation rate being about 0.1% to about 10% of total mass per day at 93° C. in a 15% KCl solution;(b) frictionally engaging the slips with a casing string in the subterranean formation;(c) compressing the packer element against the casing string to set the frac plug;(d) creating at least one perforation into the subterranean formation;(e) hydraulically fracturing the subterranean formation;(f) at least partially degrading the degradable alloy upon contact with an electrolyte in the wellbore; and(g) producing a hydrocarbon from the subterranean formation. 2. The method of claim 1, wherein the packer element is at least partially composed of a degradable elastomer. 3. The method of claim 1, wherein step (f) begins before step (g) begins, or wherein step (g) begins before step (f) begins. 4. The method of claim 1, wherein there is no wellbore intervention for purposes of removing the frac plug or debris from the frac plug from the wellbore between steps (e) and (f), and/or between steps (f) and (g). 5. The method of claim 1, wherein there is no wellbore intervention for purposes of removing the frac plug or debris from the frac plug from the wellbore between the steps of (e) and (g), and wherein either of steps (f) or (g) begins prior to the other. 6. The method of claim 1, wherein the packer element is compressed by stroking the mandrel on the frac plug. 7. The method of claim 1, wherein the packer element is compressed by rupturing a frangible barrier disposed at least partially about the packer element. 8. The method of claim 1, further comprising seating a degradable metal ball on a ball seat of the frac plug to create a fluid seal in the wellbore. 9. The method of claim 1, further comprising seating a degradable elastomer ball on a ball seat of the frac plug to create a fluid seal in the wellbore. 10. The method of claim 1, wherein the frac plug further comprises a component selected from the group consisting of at least one slip wedge, at least one spacer ring, a mule shoe, and any combination thereof, and wherein one or more of the components is composed of the degradable alloy. 11. A method comprising: (a) introducing a frac plug into a wellbore in a subterranean formation, the frac plug comprising at least a mandrel, slips, and a packer element, wherein: at least a portion of the mandrel and/or the slips is composed of a degradable alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof; andat least a portion of the frac plug comprises a non-metal degradable material having a same degradation rate as the degradable alloy, the degradation rate being about 0.1% to about 10% of total mass per day at 93° C. in a 15% KCl solution;(b) frictionally engaging the slips with a wall of the wellbore;(c) compressing the packer element against the wall of the wellbore to set the frac plug;(d) creating at least one perforation into the subterranean formation;(e) hydraulically fracturing the subterranean formation;(f) at least partially degrading the degradable alloy upon contact with an electrolyte in the wellbore; and(g) producing a hydrocarbon from the subterranean formation. 12. The method of claim 11, wherein the packer element is at least partially composed of a degradable elastomer. 13. The method of claim 11, wherein step (f) begins before step (g) begins, or wherein step (g) begins before step (f) begins. 14. The method of claim 11, wherein there is no wellbore intervention for purposes of removing the frac plug or debris from the frac plug from the wellbore between steps (e) and (f), and/or between steps (f) and (g). 15. The method of claim 11, wherein there is no wellbore intervention for purposes of removing the frac plug or debris from the frac plug from the wellbore between the steps of (e) and (g), and wherein either of steps (f) or (g) begins prior to the other. 16. The method of claim 11, wherein the packer element is compressed by stroking the mandrel on the frac plug. 17. The method of claim 11, wherein the packer element is compressed by rupturing a frangible barrier disposed at least partially about the packer element. 18. The method of claim 11, further comprising seating a degradable metal ball on a ball seat of the frac plug to create a fluid seal in the wellbore. 19. The method of claim 11, further comprising seating a degradable elastomer ball on a ball seat of the frac plug to create a fluid seal in the wellbore. 20. The method of claim 11, wherein the frac plug further comprises a component selected from the group consisting of at least one slip wedge, at least one spacer ring, a mule shoe, and any combination thereof, and wherein one or more of the components is composed of the degradable alloy.
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이 특허에 인용된 특허 (16)
Marya, Manuel P., Aged-hardenable aluminum alloy with environmental degradability, methods of use and making.
McKeachnie,W. John; McKeachnie,Michael; Williamson,Scott; Turley,Rocky A., Wellbore tool with disintegratable components and method of controlling flow.
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