Apparatus and methods for improved fluid displacement in subterranean formations

    公开(公告)号:US07128149B2

    公开(公告)日:2006-10-31

    申请号:US11211974

    申请日:2005-08-24

    IPC分类号: E21B33/16 E21B49/08

    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.

    Treatment fluids comprising vitrified shale and methods of using such fluids in subterranean formations
    5.
    发明授权
    Treatment fluids comprising vitrified shale and methods of using such fluids in subterranean formations 有权
    包括玻璃化页岩的处理流体和在地下地层中使用这种流体的方法

    公开(公告)号:US07293609B2

    公开(公告)日:2007-11-13

    申请号:US10969570

    申请日:2004-10-20

    IPC分类号: E21B33/13

    CPC分类号: C09K8/40

    摘要: Methods and compositions for the treatment of subterranean formations, and more specifically, treatment fluids containing vitrified shale and methods of using these treatment fluids in subterranean formations, are provided. An example of a method is a method of displacing a fluid in a well bore. Another example of a method is a method of separating fluids in a well bore in a subterranean formation. An example of a composition is a spacer fluid comprising vitrified shale and a base fluid.

    摘要翻译: 提供了用于处理地下地层的方法和组合物,更具体地说,含有玻璃化页岩的处理流体和在地下地层中使用这些处理流体的方法。 方法的示例是使井眼中的流体移位的方法。 方法的另一个实例是在地层中的井眼中分离流体的方法。 组合物的实例是包含玻璃化页岩和基础流体的间隔液。

    Process for removing oil from solid materials recovered from a well bore
    7.
    发明授权
    Process for removing oil from solid materials recovered from a well bore 有权
    从井眼回收的固体物料中除去油的工艺

    公开(公告)号:US06846420B2

    公开(公告)日:2005-01-25

    申请号:US10325762

    申请日:2002-12-19

    IPC分类号: C02F1/52 C02F1/56 E21B43/22

    CPC分类号: E21B21/068

    摘要: The present invention provides a process and an additive package for removing oil from solid material recovered from a well bore, e.g., drill cuttings and produced sand. In this process, the solid material is passed from the well bore to a separation zone. An aqueous acidic solution containing a polymer substituted with an amino group is introduced to the separation zone containing the solid material along with a halogenating agent and optionally one or more surfactants. The polymer, halogenating agent, and optional surfactant constitute the additive package. The polymer substituted with an amino group is preferably chitosan, and the halogenating agent is preferably a sodium hypochlorite solution. The mixture formed in the separation zone is agitated to cause a product of a reaction between the polymer and the halogenating agent to contact the solid material and remove residual oil therefrom.

    摘要翻译: 本发明提供了一种用于从井眼例如钻屑和产生的砂回收的固体材料中除去油的方法和添加剂包。 在这个过程中,固体材料从井眼穿过分离区。 将含有被氨基取代的聚合物的酸性水溶液与卤化剂和任选的一种或多种表面活性剂一起引入含有固体材料的分离区。 聚合物,卤化剂和任选的表面活性剂构成添加剂包装。 被氨基取代的聚合物优选为壳聚糖,卤化剂优选为次氯酸钠溶液。 搅拌分离区中形成的混合物,使聚合物和卤化剂之间的反应产物与固体材料接触并从中除去残留的油。

    Zeolite-containing treating fluid
    8.
    发明授权
    Zeolite-containing treating fluid 有权
    含沸石处理液

    公开(公告)号:US07544640B2

    公开(公告)日:2009-06-09

    申请号:US10623443

    申请日:2003-07-18

    IPC分类号: E21B33/13 E21B33/138 C09B7/00

    摘要: Methods and compositions are provided for treating fluids, especially spacer fluids and cement compositions as well as drilling, completion and stimulation fluids including, but not limited to, drilling muds, well cleanup fluids, workover fluids, conformance fluids, gravel pack fluids, acidizing fluids, fracturing fluids and the like for introduction into a subterranean zone penetrated by a wellbore, wherein the treating fluid comprises zeolite and a carrier fluid. The treating fluid may additionally include one or more of a viscosifier, organic polymer, dispersants, surfactants and weighting materials.

    摘要翻译: 提供了用于处理流体,特别是间隔液和水泥组合物以及钻井,完井和刺激流体的方法和组合物,包括但不限于钻井泥浆,井清洁液,修井液,一致性流体,砾石充填液,酸化流体 ,压裂液等用于引入井眼穿透的地下区域,其中处理流体包括沸石和载体流体。 处理流体可另外包括增粘剂,有机聚合物,分散剂,表面活性剂和加重材料中的一种或多种。