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    Low permeability subterranean formation testing method
    83.
    发明公开
    Low permeability subterranean formation testing method 失效
    Verfahren zumPrüfenvon unterirdischen Formationen niedrigerDurchlässigkeit。

    公开(公告)号：EP0577300A2

    公开(公告)日：1994-01-05

    申请号：EP93304792.0

    申请日：1993-06-18

    申请人： HALLIBURTON COMPANY

    发明人： Blauch, Matthew E. ,  Venditto, James J. ,  McMechan, David E. ,  Tanaka, Gregory L.

    IPC分类号： G01N15/08

    CPC分类号： C09K8/58 ,  C09K8/62 ,  C09K8/703 ,  C09K8/72 ,  C09K8/82 ,  C09K8/94 ,  E21B43/006 ,  G01N15/08 ,  G01N33/241

    摘要： Gas permeability of very low permeability subterranean formations, and the gas permeability reducing effects of injecting one or more treatment fluids thereinto, are measured by injecting a gas into a core sample of the formation at a selected substantially constant pressure, and continuing the injection for a long period of time to ensure steady state flow conditions. The temperature of the gas as it flows through the core sample and the flow rate of the gas exiting the core sample are measured, and the native state gas permeability of the core sample is calculated therefrom. One or more treatment fluids can be injected into the core sample after the native state permeability is determined. Thereafter, the gas permeability can again be determined and compared to the native state permeability.

    摘要翻译： 通过以选定的基本上恒定的压力将气体注入到地层的岩心样品中来测量非常低渗透性地下地层的气体渗透性和注入其中的一种或多种处理流体的气体渗透性降低效果，并且继续注入 长时间保证稳态流量状况。 测量气体流过核心样品时的温度和离开核心样品的气体的流速，并计算核心样品的天然气渗透率。 在确定天然状态渗透性之后，可将一种或多种处理流体注入核心样品。 此后，可以再次确定透气度并将其与天然状态渗透率进行比较。

    Well drilling and production fluids employing parenchymal cell cellulose
    84.
    发明公开
    Well drilling and production fluids employing parenchymal cell cellulose 失效
    玻璃纤维素矾土ent en。。。。。。。。。。。。。。。。。。。。。。。

    公开(公告)号：EP0134084A1

    公开(公告)日：1985-03-13

    申请号：EP84304573.3

    申请日：1984-07-04

    申请人： SBP, INC.

    发明人： Weibel, Michael K.

    IPC分类号： C09K7/02 ,  C09K7/06 ,  E21B33/138

    CPC分类号： C09K8/90 ,  C08B37/0057 ,  C09K8/206 ,  C09K8/703 ,  D21C5/00 ,  E21B21/003 ,  Y10S507/922 ,  Y10S507/925 ,  Y10S507/933

    摘要： Circulating and non-circulating well-drilling fluids are provided comprising parenchymal cell cellulose. In accordance with a preferred embodiment, improved viscosity and fluid loss control in circulating well-drilling fluids are obtained from the inclusion of parenchymal cell cellulose in such fluids. In accordance with another preferred embodiment, certain polymers, especially anionic polymers, and polymers derived from hemicellulosic materials are admixed with parenchymal cell cellulose in well fluids to provide synergistic fluid loss control and other beneficial properties. Methods for the employment of circulating and non-circulating well fluids employing parenchymal cell cellulose are also disclosed.

    摘要翻译： 提供了包括实质细胞纤维素的循环和非循环钻井液。 根据优选实施例，循环钻井液中的改进的粘度和流体损失控制是从这种流体中包含实质细胞纤维素获得的。 根据另一个优选的实施方案，某些聚合物，特别是阴离子聚合物和源自半纤维素材料的聚合物与井液中的实质细胞纤维素混合，以提供协同的流体损失控制和其它有益的性质。 还公开了使用实质细胞纤维素的循环和非循环井液的使用方法。