Secondary recovery method
    1.
    发明授权

    公开(公告)号:US3916996A

    公开(公告)日:1975-11-04

    申请号:US53498174

    申请日:1974-12-20

    Applicant: TEXACO INC

    Abstract: Significant improvement in the recovery of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acidsoluble components is accomplished by injecting into the formation via an injection well drilled into a formation communicating with an adjacent producing well and containing acid-soluble components which may or may not have water-sensitive clays and shales included therein, an aqueous acidic solution of a compound hereinafter described whereupon the acid component reacts with the acid-soluble components of the formation creating passageways or enlarging existing passageways thus facilitating the flow of fluids therein and the compound prevents postprecipitation of dissolved salts and thereby increases the recovery of hydrocarbons from the formation through the adjacent producing well.

    Secondary recovery method
    2.
    发明授权
    Secondary recovery method 失效
    二次回收方法

    公开(公告)号:US3916995A

    公开(公告)日:1975-11-04

    申请号:US53497074

    申请日:1974-12-20

    Applicant: TEXACO INC

    CPC classification number: C09K8/74 C09K8/584 C09K8/62 E21B43/17 Y10S507/933

    Abstract: Significant improvement in the recovery of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acidsoluble components is accomplished by injecting into the formation via an injection well drilled into a formation communicating with an adjacent producing well and containing acid-soluble components which may or may not have water-sensitive clays and shales included therein, an aqueous acidic solution of a compound hereinafter described whereupon the acid component reacts with the acid-soluble components of the formation creating passageways or enlarging existing passageways thus facilitating the flow of fluids therein and the compound prevents postprecipitation of dissolved salts and thereby increases the recovery of hydrocarbons from the formation through the adjacent producing well.

    Abstract translation: 含有酸溶性成分的含地下含烃地层的烃回收率的显着改善是通过将注入井注入到与地层相邻的生产井连通的地层中并且含有可溶于或可能的 在其中不含有水敏粘土和页岩,下文所述的化合物的酸性水溶液,因此酸组分与形成通道的酸溶性组分反应或扩大现有通道,从而促进其中的流体流动,化合物 防止溶解盐的后沉淀,从而增加烃从地层通过相邻生产井的回收。

    Method for stimulating well production
    3.
    发明授权
    Method for stimulating well production 失效
    刺激生产的方法

    公开(公告)号:US3704751A

    公开(公告)日:1972-12-05

    申请号:US3704751D

    申请日:1971-06-21

    Applicant: TEXACO INC

    Inventor: TATE JACK F

    CPC classification number: C09K8/78 Y10S507/927 Y10S507/933

    Abstract: The production of hydrocarbons from a subterranean hydrocarbonbearing formation containing acid-soluble components, such as one composed at least in part of dolomite or limestone, is stimulated by injecting into the formation a composition comprising an aqueous solution of a mineral acid having dissolved therein a phosphate ester of prescribed formula. The elimination of plugging of capillary openings within the formation and mineral scale deposition on production equipment due to postprecipitation of dissolved salts subsequent to acidization by means of the said phosphate ester results in a substantial improvement in hydrocarbon recovery.

    Abstract translation: 从含有酸溶性成分的地下含烃地层(例如由至少部分白云石或石灰石组成的地层含烃地层)生产碳氢化合物,通过向地层注入包含其中溶解有无机酸的水溶液的组合物来刺激 一种规定配方的磷酸酯。 消除由于所述磷酸酯酸化后,由于在通过所述磷酸酯酸化后的溶解盐的后沉淀,消除了地层内的毛细管孔堵塞和生产设备上的矿物垢沉积导致烃回收的显着改善。

    Method for oil recovery
    4.
    发明授权
    Method for oil recovery 失效
    油回收方法

    公开(公告)号:US3860072A

    公开(公告)日:1975-01-14

    申请号:US42854973

    申请日:1973-12-26

    Applicant: TEXACO INC

    Inventor: TATE JACK F

    CPC classification number: C09K8/528

    Abstract: The production of hydrocarbons from a subterranean hydrocarbonbearing formation is stimulated by injecting into the formation an aqueous solution of a surfactant admixture. The elimination of plugging of capillary openings within the formation and mineral scale deposition on production equipment due to postprecipitation of dissolved salts subsequent to treatment by means of said surfactant admixture results in a substantial improvement in hydrocarbon recovery.

    Abstract translation: 通过向地层注入表面活性剂外加剂的水溶液来刺激来自地下含烃地层的烃的生产。 由于在通过所述表面活性剂混合物处理之后由于溶解的盐的后沉淀而消除在地层内的毛细管孔堵塞和生产设备上的矿物垢沉积导致烃回收的显着改进。

    Oil recovery process usable in formations containing water having high concentrations of polyvalent ions
    5.
    发明授权
    Oil recovery process usable in formations containing water having high concentrations of polyvalent ions 失效
    含有高浓度聚合物离子水的成型油中的油回收方法

    公开(公告)号:US3858656A

    公开(公告)日:1975-01-07

    申请号:US42117673

    申请日:1973-12-03

    Applicant: TEXACO INC

    CPC classification number: E21B43/16 C09K8/584 Y10S507/936

    Abstract: A dual surfactant system usable in the presence of from about 200 to about 18,000 parts per million polyvalent ions, such as calcium and/or magnesium, and a method of using said surfactant system for recovering petroleum from subterranean formations, said surfactant system comprising water soluble salts of alkyl or alkylaryl sulfonates wherein the alkyl chain may have from five to 25 carbon atoms, plus sulfated oxyalkylated surfactants containing arylalkyl groups.

    Abstract translation: 在约200至约18,000份/百万分之多的多价离子(例如钙和/或镁)存在下可使用的双重表面活性剂体系,以及使用所述表面活性剂体系从地层中回收石油的方法,所述表面活性剂体系包含水溶性 烷基或烷基芳基磺酸盐,其中烷基链可具有5至25个碳原子,加上含有芳基烷基的硫酸化烷氧基化表面活性剂。

    Method for stimulating well production

    公开(公告)号:US3924684A

    公开(公告)日:1975-12-09

    申请号:US42699873

    申请日:1973-12-20

    Applicant: TEXACO INC

    Inventor: TATE JACK F

    CPC classification number: C09K8/74

    Abstract: The production of hydrocarbons from a subterranean hydrocarbonbearing formation containing acid-soluble components, such as one containing clays or siliceous minerals as exemplified by sandstone, shale, etc. is stimulated by injecting into the formation a composition comprising an aqueous solution of a mineral acid and a fluorine-containing acid or salt and having dissolved therein a vinylpyrrolidone polymer. The in-depth increase in the permeability and porosity of the formation achieved utilizing the method of invention results in a substantial improvement in hydrocarbon recovery.

    Secondary recovery method
    9.
    发明授权
    Secondary recovery method 失效
    二次回收方法

    公开(公告)号:US3912011A

    公开(公告)日:1975-10-14

    申请号:US53498574

    申请日:1974-12-20

    Applicant: TEXACO INC

    CPC classification number: C09K8/584 C09K8/62 C09K8/74 E21B43/17 Y10S507/933

    Abstract: Significant improvement in the recovery of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acidsoluble components is accomplished by injecting into the formation via an injection well drilled into a formation communicating with an adjacent producing well and containing acid-soluble components which may or may not have water-sensitive clays and shales included therein, an aqueous acidic solution of a compound as hereinafter described whereupon the acid component reacts with the acid-soluble components of the formation creating passageways or enlarging existing passageways thus facilitating the floiw of fluids therein and the compound prevents postprecipitation of dissolved salts and thereby increases the recovery of hydrocarbons from the formation through the adjacent producing well.

    Abstract translation: 含有酸溶性成分的含地下含烃地层的烃回收率的显着改善是通过将注入井注入到与地层相邻的生产井连通的地层中并且含有可溶于或可能的 没有包含其中的水敏粘土和页岩,下文所述的化合物的酸性水溶液,因此酸组分与形成通道的酸溶性组分反应,或扩大现有的通道,从而便于其中流体的絮状物,并且 化合物可防止溶解盐的沉淀,从而增加烃从地层通过相邻生产井的回收。

    Secondary oil recovery method
    10.
    发明授权
    Secondary oil recovery method 失效
    二次采油方法

    公开(公告)号:US3902556A

    公开(公告)日:1975-09-02

    申请号:US42855273

    申请日:1973-12-26

    Applicant: TEXACO INC

    Inventor: TATE JACK F

    CPC classification number: C09K8/584 C09K8/62 C09K8/74 E21B43/17

    Abstract: Significant improvement in the recovery of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acidsoluble components is accomplished by injecting into the formation via an injection well drilled into a formation communicating with an adjacent producing well and containing acid-soluble components which may or may not have water-sensitive clays and shales included therein, an aqueous acidic solution of an admixture hereinafter described whereupon the acid component reacts with the acid-soluble components of the formation creating passageways or enlarging existing passageways thus facilitating the flow of fluids therein and the admixture prevents post precipitation of dissolved salts and thereby increases the recovery of hydrocarbons from the formation through the adjacent producing well.

    Abstract translation: 含有酸溶性成分的含地下含烃地层的烃回收率的显着改善是通过将注入井注入到与地层相邻的生产井连通的地层中并且含有可溶于或可能的 在其中不包含水敏粘土和页岩,下文所述的混合物的酸性水溶液,因此酸组分与地层的酸溶性组分反应产生通道或扩大现有的通道,从而促进其中的流体流动和混合物 防止溶解盐的后沉淀,从而增加烃从地层通过相邻生产井的回收。

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