Cement-free zeolite and fly ash settable fluids and methods therefor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-008/74
C09K-008/60
E21B-043/00
출원번호
US-0901507
(2004-07-28)
등록번호
US-7297664
(2007-11-20)
발명자
/ 주소
Santra,Ashok K.
Luke,Karen
Reddy,B. Raghava
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Haynes and Boone
인용정보
피인용 횟수 :
17인용 특허 :
125
초록
Zeolite and Class F fly ash compositions are provided for use as cement-free settable fluids such as settable spotting fluids and cementitious compositions.
대표청구항▼
What is claimed is: 1. A method of treating a subterranean zone, comprising: introducing a cement-free settable fluid into the zone, the fluid comprising: a zeolite represented by the formula: description="In-line Formulae" end="lead"Ma/n[(AlO2)a(SiO2)b ]쨌xH2Odescription="In-line Formulae" end="t
What is claimed is: 1. A method of treating a subterranean zone, comprising: introducing a cement-free settable fluid into the zone, the fluid comprising: a zeolite represented by the formula: description="In-line Formulae" end="lead"Ma/n[(AlO2)a(SiO2)b ]쨌xH2Odescription="In-line Formulae" end="tail" where M represents one or more cations selected from the group consisting of Na, K, Mg, Ca, Sr, Li, Ba, NH4, CH3NH3, (CH3)3NH, (CH3)4N, Ga, Ge and P; n represents the cation valence; b:a ratio is in a range from greater than or equal to 1 and less than or equal to 5; and x represents number of moles of water entrained into the zeolite Class F fly ash, a source of calcium ion, an accelerator that comprises sodium sulfate, sodium carbonate, calcium sulfate, calcium carbonate, potassium sulfate, or potassium carbonate, and a carrier fluid; and allowing the fluid to set at a temperature of less than about 140째 F. therein. 2. The method of claim 1 wherein the cement-free settable fluid further comprises a retarder. 3. The method of claim 2 wherein the cement-free settable fluid further comprises an activator. 4. The method of claim 3 further comprising: introducing a subsequent composition into the zone to displace all but a remaining portion of the cement-free settable fluid from the zone prior to allowing the fluid to set therein. 5. The method of claim 4 wherein the remaining portion of the cement-free settable fluid is in one or more of a filter cake, fissure, fracture, cavern, vug, thief zone, low pressure subterranean zone, and high pressure subterranean zone. 6. The method of claim 3 wherein the introduction of the cement-free settable fluid at least partially displaces mud from the zone. 7. The method of claim 3 wherein the activator comprises calcium hydroxide, sodium silicate, sodium fluoride, sodium silicofluoride, magnesium silicofluoride, zinc silicofluoride, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium sulfate, or mixtures thereof. 8. The method of claim 3 wherein the source of calcium ion is a carbonate, carboxylate, silicate, nitrate, nitrite, phosphate, sulfate, sulfite, or halide salt of calcium, or an oxide or hydroxide of calcium. 9. The method of claim 3 wherein the source of calcium ion is the activator. 10. The method of claim 3 wherein the zeolite comprises analcime, bikitaite, brewsterite, chabazite, clinoptilolite, faujasite, harmotome, heulandite, laumontite, mesolite, natrolite, paulingite, phillipsite, scolecite, stellerite, stilbite, or thomsonite. 11. The method of claim 3 wherein the carrier fluid comprises a water-based carrier fluid in an amount of from about 20 to about 200 percent by weight of the zeolite. 12. The method of claim 3 wherein the carrier fluid comprises fresh water, unsaturated salt solution, brine, seawater, or saturated salt solution. 13. The method of claim 3 wherein the retarder comprises a lignosulfonate, an organic acid having an cx-hydroxy group, a salt of an organic acid having an a-hydroxy group, or a combination thereof. 14. The method of claim 3 wherein the subterranean zone is treated by removing drilling fluid or spacer fluid from a weilbore within the subterranean zone. 15. The method of claim 3 wherein the subterranean zone is treated by preparing a wellbore for cementing, and the method further comprises: displacing a fluid with the cement-free settable fluid, running a casing into the weilbore, placing a cement composition behind the casing, and allowing the cement composition to set. 16. The method of claim 4 wherein an activator is present in the subsequent composition. 17. The method of claim 16 wherein the activator comprises calcium hydroxide, sodium silicate, sodium fluoride, sodium silicofluoride, magnesium silicofluoride, zinc silicofluoride, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium sulfate, or mixtures thereof. 18. The method of claim 1 wherein the settable fluid further comprises an activator. 19. The method of claim 18 wherein the activator comprises calcium hydroxide, sodium silicate, sodium fluoride, sodium silicofluoride, magnesium silicofluoride, calcium chloride, zinc silicofluoride, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium sulfate, or mixtures thereof. 20. The method of claim 18 wherein the zeolite comprises analcime, bikitaite, brewsterite, chabazite, clinoptilolite, fauj asite, harmotome, heulandite, laumontite, mesolite, natrol ite, paulingite, phillipsite, scolecite, stellerite, stilbite, or thomsonite. 21. The method of claim 18 wherein the zeolite and Class F fly ash form a base mix and the carrier fluid comprises a water-based carrier fluid in an amount of from about 100 to about 200 percent by weight of the base mix. 22. The method of claim 1 wherein the accelerator compnses sodium sulfate. 23. The method of claim 18 wherein the source of calcium ion is the activator. 24. The method of claim 18 wherein the source of calcium ion is a carbonate, carboxylate, silicate, nitrate, nitrite, phosphate, sulfate, sulfite, or halide salt of calcium, or an oxide or hydroxide of calcium. 25. The method of claim 1 wherein the fluid is allowed to set at a temperature of 80째 F. to 100째 F. 26. The method of claim 18 wherein the composition has a density of equal to or greater than 12 ppg. 27. The method of claim 18 wherein the subterranean zone is treated by sealing the subterranean zone penetrated by a wellbore. 28. The method of claim 1 wherein the cement-free settable fluid is a drilling fluid, spacer fluid, settable spotting fluid, cementitious fluid, completion fluid, stimulation fluid, remedial fluid, well cleanup fluid, workover fluid, gravel pack fluid, acidizing fluid, fracturing fluid, conformance fluid, or a combination thereof. 29. A method of preparing a cement-free settable fluid, comprising: combining a zeolite represented by the formula: description="In-line Formulae" end="lead"Ma/n[(AlO2)a(SiO2)b ]쨌xH2Odescription="In-line Formulae" end="tail" where M represents one or more cations selected from the group consisting of Na, K, Mg, Ca, Sr, Li, Ba, NH4, CH3NH3, (CH3)3NH, (CH3)4N, Ga, Ge and P; n represents the cation valence; b:a ratio is in a range from greater than or equal to 1 and less than or equal to 5; and x represents number of moles of water entrained into the zeolite, Class F fly ash, a source of calcium ion, an accelerator that comprises sodium sulfate, sodium carbonate, calcium sulfate, calcium carbonate, potassium sulfate, or potassium carbonate, and a carrier fluid, wherein the setting fluid is allowed to set at a temperature of less than about 1 40째 F. 30. The method of claim 29 wherein the cement-free settable fluid further comprises a retarder. 31. The method of claim 30 wherein the cement-free settable fluid further comprises an activator. 32. The method of claim 31 wherein the zeolite comprises analcime, bikitaite, brewsterite, chabazite, clinoptilolite, faujasite, harmotome, heulandite, laumontite, mesolite, natrolite, paulingite, phillipsite, scolecite, stellerite, stilbite, or thomsonite. 33. The method of claim 31 wherein the activator comprises calcium hydroxide, sodium silicate, sodium fluoride, sodium silicofluoride, magnesium silicofluoride, zinc silicofluoride, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium sulfate, or mixtures thereof. 34. The method of claim 31 wherein the carrier fluid comprises a water-based carrier fluid in an amount of from about 100 to about 200 percent by weight of the zeolite. 35. The method of claim 31 wherein the retarder comprises a lignosulfonate/tartaric acid solution, an organic acid having an Q-hydroxy group, a salt of an organic acid having an α-hydroxy group, or a combination thereof. 36. The method of claim 31 wherein the source of calcium ion is the activator. 37. The method of claim 31 wherein the source of calcium ion is a carbonate, carboxylate, silicate, nitrate, nitrite, phosphate, sulfate, sulfite, or halide salt of calcium, or an oxide or hydroxide of calcium. 38. The method of claim 29 further comprising combining an activator in the settable fluid. 39. The method of claim 38 wherein the activator comprises calcium hydroxide, sodium silicate, sodium fluoride, sodium silicofluoride, magnesium silicofluoride, zinc silicofluoride, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium sulfate, or mixtures thereof. 40. The method of claim 38 further comprising allowing the settable fluid to set. 41. The method of claim 38 wherein the zeolite comprises analcime, bikitaite, brewsterite, chabazite, clinoptilolite, faujasite, harmotome, heulandite, laumontite, mesolite, natrolite, paulingite, phillipsite, scolecite, stellerite, stilbite, or thomsonite. 42. The method of claim 38 wherein the settable fluid further comprises an accelerator. 43. The method of claim 29 wherein the accelerator comprises sodium sulfate. 44. The method of claim 38 further comprising foaming the composition to form a foamed composition. 45. The method of claim 38 wherein the carrier fluid comprises a water-based carrier fluid. 46. The method of claim 38 wherein the source of calcium ion is the activator. 47. The method of claim 38 wherein the source of calcium ion is a carbonate, carboxylate, silicate, nitrate, nitrite, phosphate, sulfate, sulfite, or halide salt of calcium, or an oxide or hydroxide of calcium. 48. The method of claim 29 wherein the cement-free settable fluid is a drilling fluid, spacer fluid, settable spotting fluid, cementitious fluid, completion fluid, stimulation fluid, remedial fluid, well cleanup fluid, workover fluid, gravel pack fluid, acidizing fluid, fracturing fluid, conformance fluid, or a combination thereof. 49. A cement-free settable fluid comprising: a zeolite represented by the formula: description="In-line Formulae" end="lead"Ma/n[(AlO2)a(SiO2)b ]xH2description="In-line Formulae" end="tail" where M represents one or more cations selected from the group consisting of Na, K, Mg, Ca, Sr, Li, Ba, NH4, CH3NH3, (CH3)3NH, (CH3)4N, Ga, Ge and P; n represents the cation valence; b:a ratio is in a range from greater than or equal to 1 and less than or equal to 5; and x represents number of moles of water entrained into the zeolite, Class F fly ash, a source of calcium ion, and an oil-based carrier fluid. 50. The cement-free settable fluid of claim 49 further comprising a retarder. 51. The cement-free settable fluid of claim 50 further comprising an activator. 52. The cement-free settable fluid of claim 51 wherein the carrier fluid is in an amount of from about 50% to about 150% by weight of the zeolite. 53. The cement-free settable fluid of claim 51 wherein the carrier fluid is in an amount of from about 100% to about 125% by weight of the zeolite. 54. The cement-free settable fluid of claim 49 further comprising an activator. 55. The cement-free settable fluid of claim 54 wherein the zeolite and Class F fly ash form a base mix and the oil-based carrier fluid is in an amount of from about 50% to about 150% by weight of the base mix. 56. The cement-free settable fluid of claim 54 wherein the zeolite and Class F fly ash form a base mix and the oil-based carrier fluid is in an amount of from about 100% to about 125% by weight of the base mix. 57. A cement-free settable fluid comprising: a zeolite selected from the group consisting of analcime, bikitaite, brewsterite, chabazite, clinoptilolite, faujasite, harmotome, heulandite, laumontite, mesolite, natrolite, paulingite, phillipsite, scolecite, stellerite, stilbite, and thomsonite; Class F fly ash; a source of calcium ion; and an oil-based carrier fluid.
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이 특허에 인용된 특허 (125)
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