Injection of treatment materials into a geological formation surrounding a well bore
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/26
E21B-043/263
E21B-043/27
출원번호
UP-0306869
(2006-01-13)
등록번호
US-7748457
(2010-07-26)
발명자
/ 주소
Walton, Ian C.
Still, John W.
Fayard, Alfredo
Woodburn, Charles
출원인 / 주소
Schlumberger Technology Corporation
대리인 / 주소
Trop, Pruner, & Hu, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
Methods and systems for creating fractures in a geological formation surrounding a well bore. In one implementation, a treatment material may be disposed at the bottom of the well bore. One or more propellant apparatuses may be immersed in the treatment material and a propellant may then be burned i
Methods and systems for creating fractures in a geological formation surrounding a well bore. In one implementation, a treatment material may be disposed at the bottom of the well bore. One or more propellant apparatuses may be immersed in the treatment material and a propellant may then be burned inside a first propellant apparatus to create fractures in the geological formation.
대표청구항▼
What is claimed is: 1. A method for creating fractures in a geological formation surrounding a well bore, comprising: disposing at least one propellant apparatus downhole, the at least one propellant apparatus having a carrier; disposing a propellant entirely inside the carrier; disposing a treatme
What is claimed is: 1. A method for creating fractures in a geological formation surrounding a well bore, comprising: disposing at least one propellant apparatus downhole, the at least one propellant apparatus having a carrier; disposing a propellant entirely inside the carrier; disposing a treatment material inside the carrier; detonating an ignition element provided with the propellant apparatus to rupture at least one aperture in the carrier, wherein the treatment material is disposed inside the carrier prior to detonation of the ignition element; burning the propellant inside the at least one propellant apparatus to elevate pressure in the well bore to create fractures in the geological formation; and delivering the treatment material through the at least one aperture into the fractures while the propellant is burning, wherein the treatment material comprises a solid acid precursor. 2. The method of claim 1, wherein delivering the treatment material into the fractures is in response to the elevated pressure produced by gases generated by the burning propellant. 3. The method of claim 1, wherein the treatment material further comprises proppants. 4. The method of claim 1, further comprising burning a propellant inside a second propellant apparatus a predetermined time period after burning the propellant inside the at least one propellant apparatus. 5. The method of claim 1, comprising embedding the treatment material inside the propellant. 6. The method of claim 1, comprising coating an outside surface of the propellant with the treatment material. 7. The method of claim 1, wherein detonating the ignition element comprises detonating a detonating cord. 8. The method of claim 1, further comprising coating an inner surface of the carrier with the treatment material. 9. The method of claim 1, wherein the treatment material further comprises a solid acid-reactive material mixed with the solid acid precursor. 10. The method of claim 9, wherein the solid acid precursor is selected from the group consisting of lactide, glycolide, polylactic acid (PLA), polyglycolic acid, copolymers of polylactic acid and polyglycolic acid, copolymers of glycolic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, copolymers of lactic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, and mixtures thereof, and wherein the solid acid-reactive material is selected from the group consisting of magnesium hydroxide, magnesium carbonate, magnesium calcium carbonate, calcium carbonate, aluminum hydroxide, calcium oxalate, calcium phosphate, aluminum metaphosphate, sodium zinc potassium polyphosphate glass, and sodium calcium magnesium polyphosphate glass. 11. The method of claim 1, wherein the solid acid precursor is selected from the group consisting of lactide, glycolide, polylactic acid (PLA), polyglycolic acid, copolymers of polylactic acid and polyglycolic acid, copolymers of glycolic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, copolymers of lactic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, and mixtures thereof. 12. A system for creating fractures in a geological formation surrounding a well bore, comprising: a carrier having an inner space containing a propellant, wherein the propellant is entirely located within the carrier; an ignition element in the carrier to rupture at least one aperture in the carrier; and a treatment material comprising a solid acid precursor disposed inside the carrier prior to detonation of the ignition element; wherein the aperture enables emission of elevated pressure caused by burning of the propellant into the well bore to create the fractures in the geological formation, and wherein the treatment material is to be delivered into the fractures while the propellant is burning. 13. The system of claim 12, wherein the treatment material comprises proppants. 14. The system of claim 12, wherein the treatment material comprises proppants suspended in liquid. 15. The system of claim 12, wherein the treatment material further comprises a solid acid-reactive material mixed with the solid acid precursor. 16. The system of claim 15, wherein the solid acid precursor is selected from the group consisting of lactide, glycolide, polylactic acid (PLA), polyglycolic acid, copolymers of polylactic acid and polyglycolic acid, copolymers of glycolic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, copolymers of lactic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, and mixtures thereof, and wherein the solid acid-reactive material is selected from the group consisting of magnesium hydroxide, magnesium carbonate, magnesium calcium carbonate, calcium carbonate, aluminum hydroxide, calcium oxalate, calcium phosphate, aluminum metaphosphate, sodium zinc potassium polyphosphate glass, and sodium calcium magnesium polyphosphate glass. 17. The system of claim 12, wherein the treatment material is embedded inside the propellant. 18. The system of claim 12, wherein the treatment material coats an outside surface of the propellant. 19. The system of claim 12, wherein the ignition element comprises a detonating cord. 20. The system of claim 12, wherein the treatment material coats an inner surface of the carrier. 21. The system of claim 12, wherein the solid acid precursor is selected from the group consisting of lactide, glycolide, polylactic acid (PLA), polyglycolic acid, copolymers of polylactic acid and polyglycolic acid, copolymers of glycolic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, copolymers of lactic acid with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties, and mixtures thereof.
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이 특허에 인용된 특허 (14)
David S. Wesson, Apparatus and method for perforating and stimulating a subterranean formation.
Snider Philip M. ; Haney Joseph P. ; Haney Robert L.,CAX ; Wesson David S. ; Cuthill David A.,CAX, Apparatus and method for perforating and stimulating a subterranean formation.
Ford Franklin C. (3459 Edison Way Fremont CA 94538) Hill Gilman A. (6200 Plateau Dr. Englewood CO 80110) Vincent Coye T. (1201 Eva Ave. Los Altos CA 94022), High-velocity jet and propellant fracture device for gas and oil well production.
Couet Benoit (Bethel CT) Petijean Luc (Danbury CT) Ayestaran Luis C. (Ridgefield CT), Method and apparatus for overbalanced perforating and fracturing in a borehole.
Hill Gilman A. (Englewood CO) Passamaneck Richard S. (Littleton CO) Touryan Kenell J. (Indian Hills CO), Well treating method for stimulating recovery of fluids.
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