Inverse emulsion polymers as lost circulation material
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-033/13
E21B-043/16
C09K-008/508
출원번호
US-0961185
(2010-12-06)
등록번호
US-8703657
(2014-04-22)
발명자
/ 주소
Fang, Cindy C.
Thaemlitz, Carl Joseph
Davidson, Eric
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Roddy, Craig
인용정보
피인용 횟수 :
2인용 특허 :
161
초록▼
A sealant composition comprising an inverse emulsion polymer and methods of servicing a wellbore using the same are disclosed. In one embodiment, a method of servicing a wellbore that penetrates a subterranean formation is disclosed. The method comprises placing a sealant composition comprising an i
A sealant composition comprising an inverse emulsion polymer and methods of servicing a wellbore using the same are disclosed. In one embodiment, a method of servicing a wellbore that penetrates a subterranean formation is disclosed. The method comprises placing a sealant composition comprising an inverse emulsion polymer into the wellbore to reduce a loss of fluid to the subterranean formation during placement of the fluid in the wellbore.
대표청구항▼
1. A sealant composition consisting essentially of an oil dispensed polymer composition, wherein the oil dispersed polymer composition comprises from 0 wt. % to about 10 wt. % water by total weight of the oil dispersed polymer composition, and wherein the oil dispersed polymer composition comprises
1. A sealant composition consisting essentially of an oil dispensed polymer composition, wherein the oil dispersed polymer composition comprises from 0 wt. % to about 10 wt. % water by total weight of the oil dispersed polymer composition, and wherein the oil dispersed polymer composition comprises at least 50 wt. % water swellable polymers having a particle size from about 0.01 microns to about 30 microns dispersed in an oil, andwherein the oil dispersed polymer composition is formed by dehydration of an inverse emulsion polymer composition, wherein the inverse emulsion polymer composition comprises more than 30 wt. % water. 2. The sealant composition of claim 1, wherein the inverse emulsion polymer composition comprises the water swellable polymers. 3. The sealant composition of claim 2, wherein the water swellable polymers comprise a synthetic polymer, a superabsorber, a natural polymer, or combinations thereof. 4. The sealant composition of claim 2, wherein the inverse emulsion polymer composition comprises from about 5 wt. % to about 70 wt. % water swellable polymers by total weight of the inverse emulsion polymer compositions. 5. The sealant composition of claim 1, wherein the inverse emulsion polymer composition comprises from about 10 wt. % to about 80 wt. % oil by total weight of the inverse emulsion polymer composition. 6. The sealant composition of claim 1, wherein the oil comprises a petroleum oil, a natural oil, a synthetically derived oil, a mineral oil, a silicone oil, or combinations thereof. 7. The sealant composition of claim 1, wherein the sealant composition has a density of from about 10 ppg to about 20 ppg. 8. The sealant composition of claim 1, wherein the inverse emulsion polymer composition has a pH of from about 5.1 to about 8.0. 9. The sealant composition of claim 1, wherein the inverse emulsion polymer composition has a density of from about 1.0 g/ml to about 2.5 g/ml. 10. The sealant composition of claim 1, wherein the sealant composition is effective to reduce a loss of a fluid to the subterranean formation during placement of the fluid in a wellbore in which the sealant composition has been placed. 11. The sealant composition of claim 10, wherein the fluid comprises a water-based drilling fluid or a nonaqueous drilling fluid. 12. The sealant composition of claim 10, wherein the fluid comprises a treating fluid. 13. The sealant composition of claim 1, wherein the oil dispersed polymer composition comprises from about 0 wt. % to about 5 wt. % water by total weight of the oil dispersed polymer composition. 14. A sealant composition consisting essentially of an oil dispersed polymer composition, wherein the oil dispersed polymer composition comprises from about 10 wt. % to about 80 wt. % oil by total weight of the oil dispersed polymer composition, wherein the oil dispersed polymer composition comprises from 0 wt. % to about 10 wt. % water, and wherein the oil dispersed polymer composition comprises at least 50 wt. % water swellable polymers having a particle size from about 0.001 microns to about 30 microns dispersed in the oil,wherein the oil dispersed polymer composition is formed by dehydration of an inverse emulsion polymer composition, wherein the inverse emulsion polymer comprises from about 30 wt. % to about 70 wt. % water by total weight of the inverse emulsion polymer, wherein the inverse emulsion polymer has a pH of from about 5.1 to about 8. 15. The sealant composition of claim 14, wherein the water swellable polymers comprise a synthetic polymer, a superabsorber, a natural polymer, or combinations thereof. 16. The sealant composition of claim 14, wherein the sealant composition has a density of from about 10 ppg to about 20 ppg. 17. A sealant composition consisting essentially of an oil dispersed polymer composition, wherein the oil dispersed polymer composition comprises from 0 wt. % to about 10 wt. % water by total weight of the oil dispersed polymer composition, and wherein the oil dispersed polymer composition comprises at least 50 wt. % water swellable polymers having a particle size from about 0.01 microns to about 30 microns dispersed in an oil, andwherein the oil dispersed polymer is formed by dehydration of an inverse emulsion polymer composition. 18. The sealant composition of claim 17, wherein the oil comprises a petroleum oil, a natural oil, a synthetically derived oil, a mineral oil, a silicone oil, or combinations thereof. 19. The sealant composition of claim 17, wherein the oil dispersed polymer composition comprises from about 0 wt. % to about 5 wt % water. 20. The sealant composition of claim 17, wherein the water swellable polymers comprise a synthetic polymer, a superabsorber, a natural polymer, or combinations thereof.
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이 특허에 인용된 특허 (161)
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