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    Apparatus and methods for improved fluid displacement in subterranean formations
    1.
    发明授权
    Apparatus and methods for improved fluid displacement in subterranean formations 有权

    公开(公告)号：US07128149B2

    公开(公告)日：2006-10-31

    申请号：US11211974

    申请日：2005-08-24

    申请人： James F. Heathman ,  Sears T. Dealy ,  James H. Cantrell ,  Dennis W. Gray

    发明人： James F. Heathman ,  Sears T. Dealy ,  James H. Cantrell ,  Dennis W. Gray

    IPC分类号： E21B33/16 ,  E21B49/08

    CPC分类号： C09K8/42 ,  Y10S507/904 ,  Y10S507/927

    摘要： Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of methods include methods of water-wetting an annulus in a subterranean formation having an oleaginous-external/aqueous-internal fluid disposed on at least a portion of one or more surfaces of the annulus. Another example of a method is a method of using an inverter fluid in a subterranean formation that includes a tubular string disposed therein having an annular region adjacent the outer surface of the tubular string, at least part of the annular region having an oleaginous-external/aqueous-internal fluid on a surface thereof. Another example of a method of the present invention is a method of identifying an inverter fluid to use for inverting an oleaginous-external/aqueous-internal fluid in a subterranean formation.

    Wettability and fluid displacement in a well
    5.
    依法登记的发明
    Wettability and fluid displacement in a well 有权
    井中润湿性和流体位移

    公开(公告)号：USH1932H

    公开(公告)日：2001-01-02

    申请号：US09281719

    申请日：1999-03-30

    申请人： James F. Heathman ,  J. Michael Wilson ,  James H. Cantrell

    发明人： James F. Heathman ,  J. Michael Wilson ,  James H. Cantrell

    IPC分类号： E21B4700

    CPC分类号： E21B33/13

    摘要： An inverter fluid that intermixes with a non-aqueous (e.g., oil) external/aqueous internal fluid to cause external/internal inversion is designed. This includes testing a selected inverter fluid with a test fluid having a composition nominally equivalent to the composition of the non-aqueous external/aqueous internal fluid. A quantity of the designed inverter fluid is made and placed in the annulus of a well, such as an oil or gas well, to remove the non-aqueous external/aqueous internal fluid on at least a portion of one or more surfaces of the annulus. This can include pumping the inverter fluid along with a stream of cement. The inverter fluid displaces at least part of the non-aqueous external/aqueous internal fluid in the annular region and inverts the coating of non-aqueous external/aqueous internal fluid sufficient to remove the coating ahead of the cement. Determining a suitable inverter fluid comprises: measuring a parameter related to electrical conductivity of an initial mixture including (1) a test fluid having a composition nominally equivalent to the non-aqueous external/aqueous internal fluid and (2) part of a selected inverter fluid; and adding a further part of the selected inverter fluid to the initial mixture until the measured parameter indicates the external/internal phases of the test fluid have inverted.

    摘要翻译： 设计了与非水（例如油）外部/水性内部流体混合以引起外部/内部反转的逆变器流体。 这包括用具有名义上等同于非水外部/水性内部流体的组成的组成的测试流体来测试所选择的逆变器流体。 将一定数量的设计的逆变流体制成并放置在诸如油井或气井之类的井的环形空间中，以在环形空间的一个或多个表面的至少一部分上移除非水的外部/水性内部流体 。 这可以包括泵送逆变器流体和水泥流。 逆变器流体使环形区域中的至少一部分非水性外部/水性内部流体移位，并使非水性外部/水性内部流体的涂层反转，足以移除水泥前方的涂层。 确定合适的逆变器流体包括：测量与初始混合物的电导率相关的参数，包括（1）具有名义上等同于非水性外部/水性内部流体的组成的试验流体和（2）选定的反应器流体的一部分 ; 并将所选择的逆变器流体的另一部分添加到初始混合物，直到所测量的参数指示测试流体的外部/内部相位反转为止。

    Cementing methods using dry cementitious materials having improved flow properties
    10.
    发明授权
    Cementing methods using dry cementitious materials having improved flow properties 失效
    使用具有改善的流动性能的干燥胶结材料的水泥方法

    公开(公告)号：US06170575B2

    公开(公告)日：2001-01-09

    申请号：US09324310

    申请日：1999-06-02

    申请人： Baireddy R. Reddy ,  Ronald E. Sweatman ,  James F. Heathman ,  Russell M. Fitzgerald ,  Ronald J. Crook

    发明人： Baireddy R. Reddy ,  Ronald E. Sweatman ,  James F. Heathman ,  Russell M. Fitzgerald ,  Ronald J. Crook

    IPC分类号： C04B2404

    CPC分类号： C04B20/107 ,  C04B20/1018 ,  C04B28/02 ,  C04B28/04 ,  C04B40/0042 ,  C04B2103/30 ,  C04B2103/34 ,  C04B2111/00146 ,  C09K8/46 ,  Y02W30/92 ,  Y02W30/94 ,  C04B14/042 ,  C04B14/047 ,  C04B14/06 ,  C04B40/0608 ,  C04B14/066 ,  C04B18/08 ,  C04B18/146 ,  C04B22/124 ,  C04B24/04

    摘要： Cement compositions and methods of cementing within subterranean formations penetrated by well bores wherein the flow properties of one or more dry particulate cementitious materials are improved and wherein the materials can be readily conveyed out of storage tanks and the like. A preferred composition of the present invention comprises a particulate flow enhancing additive dry-blended with one or more dry particulate cementitious materials, said flow enhancing additive being comprised of a particulate solid material carrying a flow inducing polar chemical, and a sufficient amount of water to form a pumpable slurry. The methods basically include the steps of dry-blending the particulate flow enhancing additive with the one or more dry particulate cementitious materials; forming a pumpable slurry using the one or more cementitious materials having the particulate flow enhancing additive blended therewith; pumping the slurry into a well bore; and then allowing the slurry to solidify within the subterranean formation.

    摘要翻译： 水泥组合物和在井下穿透的地层内的固井方法，其中改善了一种或多种干颗粒状水泥质材料的流动性质，并且其中材料可以容易地从储罐等传送。 本发明的优选组合物包含与一种或多种干燥颗粒状水泥质材料干混的颗粒状流动增强添加剂，所述流动增强添加剂由承载流动诱发极性化学品的颗粒固体材料和足量的水组成 形成可泵送浆料。 所述方法基本上包括以下步骤：用一种或多种干颗粒状水泥质材料将颗粒状流动增强添加剂干混; 使用一种或多种具有与其混合的颗粒流动增强添加剂的水泥质材料形成可泵送浆料; 将浆料泵入井眼; 然后允许浆料在地层内固化。