[특허]Formation treating

Formation treating 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-033/138 E21B-043/24
출원번호	US-0793928 (1991-11-18)
발명자 / 주소	Surles Billy W. (Houston) Fader Philip D. (Katy) Pardo Carlos W. (Missouri City TX)
출원인 / 주소	Texaco Inc. (White Plains NY 02)
인용정보	피인용 횟수 : 90 인용 특허 : 0

초록 ▼

Disclosed are processes for treating a subterranean formation to improve the permeability distribution by reducing the permeability in high permeability zones, so fluids injected for oil recovery purposes will sweep more uniformly through the formation. The processes involve injecting a polymerizable compound, preferably a monomer or oligomer of furfuryl alcohol, together with a diluent, preferably an ester such as butyl acetate, and a suitable acid catalyst for the formation conditions, generally toluenesulfonic acid. The fluid may be injected in a liquid phase or mixed with steam or non-condensable gas to form an aerosol, which is injected then into the formation prior to the injection of the oil recovery fluid, which may be water, surfactant fluid, polymer fluid, or steam.

대표청구항 ▼

A method for treating a subterranean petroleum-containing formation penetrated by at least one well in fluid communication with the formation, said formation comprising at least two layered intervals having differing permeabilities to fluid injection, including a first interval of relatively high permeability and a second interval of relatively lower permeability, in order to improve the injectivity profile of the formation to subsequently-injected oil recovery fluid, comprising: (a) providing an aerosol treating fluid comprising steam, a polymerizable compound comprising a monomer or oligomer or furfuryl alcohol, a diluent for the compound, and an acid catalyst capable of causing polymerization of the polymerizable compound at formation temperatures, said acid being selected from the group consisting of sulfuric acid, toluene sulfonic acid, phosphoric acid, trichloroacetic acid, nitric acid and mixtures thereof; (b) injecting said treating fluid into the formation to pass into the more permeable interval of the petroleum formation and to deposit on the mineral surfaces of the formations; and (c) allowing the injected treating fluid to remain in the formation for a period of time sufficient to accomplish at least partial polymerization of the polymerizable compound, thereby reducing the permeability of the more permeable layer of the formation, so an increased portion of the subsequently injected oil recovery fluid enters the second interval.

이 특허를 인용한 특허 (90)

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Hoch, Ottmar F.; Blauch, Matthew E.; Welton, Thomas D., Compositions for stimulating liquid-sensitive subterranean formations.
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Surles Billy Wayne (Houston TX), Formation treating method.
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Vinegar, Harold J., In situ heat treatment from multiple layers of a tar sands formation.
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Miller, David Scott; Uwechue, Uzo Philip, Irregular spacing of heat sources for treating hydrocarbon containing formations.
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Raney, Kirk Herbert; Semple, Thomas Carl, Method and composition for enhanced hydrocarbons recovery.
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Raney, Kirk Herbert; Semple, Thomas Carl, Method and composition for enhanced hydrocarbons recovery.
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Shpakoff,Paul Gregory; Raney,Kirk Herbert, Method and composition for enhanced hydrocarbons recovery.
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Shpakoff,Paul Gregory; Raney,Kirk Herbert, Method and composition for enhanced hydrocarbons recovery.
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Kim, Dong Sub, Methods for forming long subsurface heaters.
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Hoch, Ottmar F.; Blauch, Matthew E.; Welton, Thomas D., Methods of stimulating liquid-sensitive subterranean formations.
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Nguyen, Scott Vinh; Vinegar, Harold J., Molten salt as a heat transfer fluid for heating a subsurface formation.
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Vinegar, Harold J., Three-phase heaters with common overburden sections for heating subsurface formations.
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Vinegar, Harold J., Treating nahcolite containing formations and saline zones.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Formation treating 원문보기

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Formation treating 원문보기

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