Method of Treating Subterranean Formations with Carboxylated Guar Derivatives
    3.
    发明申请
    Method of Treating Subterranean Formations with Carboxylated Guar Derivatives 有权
    用羧基瓜尔胶衍生物处理地下地层的方法

    公开(公告)号:US20110015100A1

    公开(公告)日:2011-01-20

    申请号:US12505272

    申请日:2009-07-17

    IPC分类号: C09K8/62

    摘要: The production of hydrocarbons from a subterranean formation is enhanced by use of a well treatment fluid which contains a carboxylated guar which may be prepared by reacting a guar source and a derivatizing agent of the formula X(CH2)nCOOH or alkali salts thereof, wherein X is selected from the group consisting of —OSO2CH3; —OSO2C2H5; —OTs, —Br, and —I and n is between from 1 to 4. The intrinsic viscosity of the carboxylated guar in 2% KCl at 27° C. is at least 750 mL/g and the degree of substitution (DS) of the carboxylated guar is typically between from about 0.02 to about 0.15.

    摘要翻译: 通过使用含有羧基瓜耳胶的良好处理流体来提高来自地下层的烃的生产,所述羧酸化瓜尔胶可以通过使瓜尔胶源和式X(CH 2)n COOH的衍生化剂或其碱金属盐反应而制备,其中X 选自-OSO 2 CH 3; -OSO2C2H5; -OTs,-Br和-I,n在1至4之间。在27℃下2%KCl中羧化瓜尔酮的特性粘度至少为750mL / g,取代度(DS)为 羧化瓜尔胶通常在约0.02至约0.15之间。

    Method of treating subterranean formations with carboxylated guar derivatives
    4.
    发明授权
    Method of treating subterranean formations with carboxylated guar derivatives 有权
    用羧化瓜尔胶衍生物处理地下地层的方法

    公开(公告)号:US08030250B2

    公开(公告)日:2011-10-04

    申请号:US12505272

    申请日:2009-07-17

    IPC分类号: C09K8/68 E21B43/26

    摘要: The production of hydrocarbons from a subterranean formation is enhanced by use of a well treatment fluid which contains a carboxylated guar which may be prepared by reacting a guar source and a derivatizing agent of the formula X(CH2)nCOOH or alkali salts thereof, wherein X is selected from the group consisting of —OSO2CH3; —OSO2C2H5; —OTs, —Br, and —I and n is between from 1 to 4. The intrinsic viscosity of the carboxylated guar in 2% KCl at 27° C. is at least 750 mL/g and the degree of substitution (DS) of the carboxylated guar is typically between from about 0.02 to about 0.15.

    摘要翻译: 通过使用含有羧基瓜耳胶的良好处理流体来提高来自地下层的烃的生产,所述羧酸化瓜尔胶可以通过使瓜尔胶源和式X(CH 2)n COOH的衍生化剂或其碱金属盐反应而制备,其中X 选自-OSO 2 CH 3; -OSO2C2H5; -OTs,-Br和-I,n在1至4之间。在27℃下2%KCl中羧化瓜尔酮的特性粘度至少为750mL / g,取代度(DS)为 羧化瓜尔胶通常在约0.02至约0.15之间。

    Surfactants for hydrocarbon recovery
    5.
    发明申请
    Surfactants for hydrocarbon recovery 审中-公开
    用于烃回收的表面活性剂

    公开(公告)号:US20090253595A1

    公开(公告)日:2009-10-08

    申请号:US12062278

    申请日:2008-04-03

    IPC分类号: C09K8/86

    摘要: This invention provides compositions comprising an aqueous well fluid and at least one nonionic acetylenic alcoholic surfactant. The compositions may further comprise at least one fluoroaliphatic surfactant. Methods for recovery of aqueous well fluids involving the use of at least one nonionic acetylenic alcoholic surfactant are also provided, and these methods may further comprise the use of at least one fluoroaliphatic surfactant.

    摘要翻译: 本发明提供了包含水性井液和至少一种非离子炔属醇表面活性剂的组合物。 组合物还可以包含至少一种氟代脂族表面活性剂。 还提供了涉及使用至少一种非离子炔属醇类表面活性剂的含水井液的回收方法,并且这些方法还可以包括使用至少一种氟代脂族表面活性剂。