Set-delayed cement compositions comprising pumice and associated methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-016/00
C04B-028/18
C04B-040/06
C09K-008/467
C04B-014/00
C04B-022/08
C09K-008/46
E21B-033/13
출원번호
US-0478869
(2014-09-05)
등록번호
US-9260343
(2016-02-16)
발명자
/ 주소
Brothers, Lance Everett
Pisklak, Thomas Jason
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Roddy, Craig W.
인용정보
피인용 횟수 :
16인용 특허 :
95
초록▼
A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; int
A variety of methods and compositions are disclosed, including, in one embodiment, a method of cementing in a subterranean formation, comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation.
대표청구항▼
1. A method of cementing comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, a dispersant, and a set retarder, wherein the set retarder comprises a phosphonic acid derivative and the dispersant comprises a polycarboxylated ether dispersant;activating the s
1. A method of cementing comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, a dispersant, and a set retarder, wherein the set retarder comprises a phosphonic acid derivative and the dispersant comprises a polycarboxylated ether dispersant;activating the set-delayed cement composition;placing the set-delayed cement composition; andallowing the set-delayed cement composition to set. 2. The method of claim 1 wherein the pumice has a mean particle size in a range of about 1 micron to about 200 microns. 3. The method of claim I wherein the pumice and the hydrated lime are present in a weight ratio of pumice to hydrated lime of about 10:1 to about 1:1. 4. The method of claim 1 wherein set-delayed cement composition has a pumice-to-hydrated-lime weight ratio of about 3:1 to about 5:1, wherein the set retarder is present in an amount of about 0.01% to about 2% by weight of the pumice, and wherein the polycarboxylated ether dispersant is present in an amount of about 0.01% to about 2% by weight of the pumice. 5. The method of claim 1 wherein the set-delayed cement composition further comprises at least one additive selected from the group consisting of a weighting agent, a lightweight additive, a gas-generating additive, a mechanical-property-enhancing additive, a lost-circulation material, a filtration-control additive, a fluid-loss-control additive, a defoaming agent, a foaming agent, a thixotropic additive, and any combination thereof. 6. The method of claim 1 wherein the set-delayed cement composition remains in a pumpable fluid state for a time period of at least about 7 days prior to the activating. 7. The method of claim 1 wherein the set-delayed cement composition remains in a pumpable fluid state for a time period of at least about 30 days prior to the activating. 8. The method of claim 1 wherein the activating comprises adding a cement set accelerator to the set-delayed cement composition. 9. The method of claim 1 further comprising measuring the 24 hour compressive strength of the set-delayed cement composition with an Ultrasonic Cement Analyzer at 140° F. while maintained at 3,000 psi wherein the 24 hour compressive strength measurement is at least about 50 psi. 10. The method of claim 1 wherein the set-delayed cement composition is introduced into a well bore penetrating the subterranean formation, the well bore having a bottom-hole static temperature of less than about 200° F. 11. The method of claim 1 wherein the set-delayed cement composition is introduced into an annulus between a wall of a well bore and a conduit disposed in the well bore. 12. A method of cementing comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, a dispersant, and a set retarder, wherein the set retarder comprises a phosphonic acid derivative and the dispersant comprises a polycarboxylated ether dispersant;storing the set-delayed cement composition for a period of at least about 1 day;adding a cement set accelerator to the set-delayed cement composition;placing the set-delayed cement composition; andallowing the set-delayed cement composition to set. 13. The method of claim 12 wherein the pumice and the hydrated lime are present in a weight ratio of pumice to hydrated lime of about 10:1 to about 1:1. 14. The method of claim 12 wherein the set-delayed cement composition is stored for a time period of at least about 30 days. 15. The method of claim 12 wherein the pumice has a mean particle size in a range of about 1 micron to about 200 microns. 16. The method of claim 12 wherein the set-delayed cement composition has a pumice-to-hydrated-time weight ratio of about 3:1 to about 5:1, wherein the set retarder is present in an amount of about 0.01% to about 2% by weight of the pumice, and wherein the polycarboxylated ether dispersant is present in an amount of about 0.01% to about 2% by weight of the pumice. 17. The method of claim 12 wherein the set-delayed cement composition further comprises at least one additive selected from the group consisting of a weighting agent, a lightweight additive, a gas-generating additive, a mechanical-property-enhancing additive, a lost-circulation material, a filtration-control additive,a fluid-loss-control additive, a defoaming agent, a foaming agent, a thixotropic additive, and any combination thereof. 18. The method of claim 12 wherein the set-delayed cement composition remains in a pumpable fluid state bar a time period of at least about 7 days prior to the activating. 19. The method of claim 12 further measuring the 24 hour compressive strength of the set-delayed cement composition with an Ultrasonic Cement Analyzer at 140° F. while maintained at 3,000 psi, wherein the 24 hour compressive strength measurement is at least about 50 psi. 20. The method of claim 12 wherein the set-delayed cement composition is introduced into a well bore penetrating a subterranean formation, the well bore having a bottom-hole static temperature of less than about 200° F.
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