Method for the use of nitrates and nitrate reducing bacteria in hydraulic fracturing
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/22
E21B-043/26
E21B-043/16
C09K-008/68
C09K-008/62
출원번호
US-0755186
(2015-06-30)
등록번호
US-9683433
(2017-06-20)
발명자
/ 주소
Durham, Danny K.
Harless, Michael L.
출원인 / 주소
Multi-Chem Group, LLC
대리인 / 주소
Krueger, Tenley
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A slick water fracturing fluid including a brine, an inorganic nitrate, a nitrogen reducing bacteria, a scale inhibitor selected from the group consisting of a polyacrylate polymer, a polyacrylate copolymer, a polyacrylate terpolymer, and mixtures thereof, and a friction reducer, wherein the frictio
A slick water fracturing fluid including a brine, an inorganic nitrate, a nitrogen reducing bacteria, a scale inhibitor selected from the group consisting of a polyacrylate polymer, a polyacrylate copolymer, a polyacrylate terpolymer, and mixtures thereof, and a friction reducer, wherein the friction reducer is a polyacrylamide.
대표청구항▼
1. A method comprising: providing a fracturing fluid comprising a brine and an inorganic nitrate;injecting the fracturing fluid into the subterranean formation; andallowing the inorganic nitrate to increase the growth rate of nitrogen-reducing bacteria in the formation so as to inhibit the growth ra
1. A method comprising: providing a fracturing fluid comprising a brine and an inorganic nitrate;injecting the fracturing fluid into the subterranean formation; andallowing the inorganic nitrate to increase the growth rate of nitrogen-reducing bacteria in the formation so as to inhibit the growth rate of sulfate-reducing bacteria in the formation. 2. The method of claim 1 wherein the fracturing fluid further comprises a nitrogen reducing bacteria. 3. The method of claim 1 wherein the fracturing fluid further comprises a scale inhibitor. 4. The method of claim 3 wherein the scale inhibitor comprises at least one compound selected from the group consisting of: a polyacrylate polymer, a polyacrylate copolymer, a polyacrylate terpolymer, and any combination thereof. 5. The method of claim 1 wherein the fracturing fluid further comprises a friction reducer. 6. The method of claim 5 wherein the friction reducer comprises a polyacrylamide. 7. The method of claim 1 wherein the fracturing fluid further comprises a molybdate or molybdate salt. 8. The method of claim 1 wherein no effective amount of a biocide is introduced into the subterranean formation. 9. The method of claim 1 wherein the fracturing fluid comprises a gel. 10. The method of claim 1 wherein the subterranean formation comprises a low permeability subterranean formation. 11. The method of claim 1 wherein the nitrogen reducing bacteria is selected from the group consisting of: Campylobacter sp. Nitrobacter sp., Nitrosomonas sp., Thiomicrospira sp., Sulfurospirillum sp., Thauera sp., Paracoccus sp., Pseudomonas sp., Rhodobacter sp., Desulfovibrio sp., and any mixture thereof. 12. The method of claim 11 wherein nitrogen reducing bacteria is selected from the group consisting of: Nitrobacter vulgaris, Nitrosomonas europea, Pseudomonas stutzeri, Pseudomonas aeruginosa, Paracoccus denitrificans, Sulfurospirillum deleyianum, Rhodobacter sphaeroides, and any mixture thereof.
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이 특허에 인용된 특허 (6)
Hitzman, Donald O.; Dennis, D. Michael; Iiams, Bruce Alan, Apparatus for on-site production of nitrate ions.
Hitzman Donald O. ; Sperl George T. ; Sandbeck Kenneth A., Composition for reducing the amount of and preventing the formation of hydrogen sulfide in an aqueous system, particula.
Ballinger ; Jr. Kenneth E. ; Burger Edward D. ; Knauer Robert F., Method for reducing hydrogen sulfide level in water containing sulfate-reducing bacteria and hydrogen sulfide-metabolizing bacteria.
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