Method for removing drill cuttings from wellbores and drilling fluids
    1.
    发明授权
    Method for removing drill cuttings from wellbores and drilling fluids 有权
    从井筒和钻井液中清除钻屑的方法

    公开(公告)号:US06794340B2

    公开(公告)日:2004-09-21

    申请号:US10179698

    申请日:2002-06-25

    IPC分类号: C09K700

    摘要: A method is disclosed for drilling a wellbore employing a drilling fluid providing the advantages of easy pumpability of a low viscosity fluid with the drill cuttings suspension capability of a highly viscous fluid. The viscosity of the fluid is also easily and quickly adjustable so that the fluid rheology may be adapted during drilling as the subterranean conditions change. These advantages are obtained by including in said fluid a reversibly crosslinkable polymer and an encapsulated crosslink activator. The crosslink activator causes crosslinking after the fluid is in the wellbore. The crosslinking is reversed at the well surface to reduce the viscosity of the fluid to enable the drill cuttings to be easily removed. Crosslink activator is added back to the fluid and the fluid is returned to the borehole. The amount of crosslink activator and/or crosslinkable polymer may be adjusted in the fluid to change the fluid rheology to conform the fluid to changes in the well conditions as monitored real time.

    摘要翻译: 公开了一种使用钻井液钻井井的方法,其提供了具有高粘性流体的钻屑悬浮能力的低粘度流体容易泵送的优点。 流体的粘度也容易且快速地调节,使得流体流变学可以在钻井期间随着地下条件改变而适应。 这些优点通过在所述流体中包含可逆交联的聚合物和包封的交联活化剂来获得。 在液体在井眼中之后,交联活化剂引起交联。 交联在井表面反转,以降低流体的粘度,使得钻屑容易被去除。 将交联激活剂加回到流体中,并将​​流体返回到钻孔中。 可以在流体中调节交联活化剂和/或可交联聚合物的量以改变流体流变学以使流体符合实时监测的井条件变化。

    Methods and compositions for placing particulate materials in subterranean zones
    2.
    发明授权
    Methods and compositions for placing particulate materials in subterranean zones 失效
    将颗粒材料放置在地下区域的方法和组合物

    公开(公告)号:US06945329B2

    公开(公告)日:2005-09-20

    申请号:US10438504

    申请日:2003-05-15

    IPC分类号: C09K8/70 C09K8/80 E21B43/267

    摘要: Methods and compositions for placing particulate materials in subterranean zones penetrated by well bores. In one embodiment, the methods comprise: providing a compacted particulate material fluid that comprises a compacted particulate material, and a foam within the pore spaces of the compacted particulate material, the foam comprising a pressurized gas and a liquid solution of a foam forming surfactant; and pumping the compacted particulate material fluid into the subterranean zone.

    摘要翻译: 将颗粒材料放置在井眼穿透的地下区域中的方法和组合物。 在一个实施方案中,所述方法包括:提供包含压实的颗粒材料的压实颗粒材料流体和在压实的颗粒材料的孔隙内的泡沫,所述泡沫包含加压气体和泡沫形成表面活性剂的液体溶液; 并将压实的颗粒物质流体泵送到地下区域中。

    Methods and compositions for sand control in injection wells
    4.
    发明授权
    Methods and compositions for sand control in injection wells 有权
    注入井防砂方法和组成

    公开(公告)号:US08875786B2

    公开(公告)日:2014-11-04

    申请号:US12730450

    申请日:2010-03-24

    IPC分类号: C09K8/56 E21B43/02 E21B43/16

    CPC分类号: C09K8/56 E21B43/16

    摘要: Methods of preventing or reducing migration of particulates in injection wells. Some embodiments of the present invention describe methods of introducing a tackifying treatment fluid through an injection well and into a portion of a subterranean formation surrounding the injection well, wherein the tackifying treatment fluid comprises a base fluid and a tackifying agent. Other embodiments include a step of introducing a resin treatment fluid to the injection well before the tackifying treatment fluid.

    摘要翻译: 防止或减少注入井中颗粒迁移的方法。 本发明的一些实施方案描述了通过注射井将增粘处理流体引入围绕注射井的地层的一部分的方法,其中增粘处理流体包括基础流体和增粘剂。 其他实施方案包括在增粘处理流体之前将树脂处理流体引入注入井的步骤。

    Methods of Forming Pillars and Channels in Propped Fractures
    7.
    发明申请
    Methods of Forming Pillars and Channels in Propped Fractures 有权
    支撑骨折中形成支柱和通道的方法

    公开(公告)号:US20140060826A1

    公开(公告)日:2014-03-06

    申请号:US13596662

    申请日:2012-08-28

    申请人: Philip D. Nguyen

    发明人: Philip D. Nguyen

    IPC分类号: E21B43/267

    CPC分类号: E21B43/267

    摘要: Methods of forming highly conductive pillars and channels in propped fractures in a subterranean formation including a) introducing high-density proppants into a fracture within a subterranean formation, wherein the fracture has a lower portion and an upper portion; b) introducing a spacer gel into the fracture; c) introducing low-density proppants into the fracture; d) repeating any sequence of a), b), and c) until a predetermined amount of high-density proppants, spacer gel, and low-density proppants has been introduced into the fracture; e) allowing the high-density proppants to migrate to the lower portion of the fracture and form a high-density proppant pack; and f) allowing the low-density proppants to migrate to the upper portion of the fracture and form a low-density proppant pack.

    摘要翻译: 在地层中的支撑骨折中形成高度导电的支柱和通道的方法,包括a)将高密度支撑剂引入地层内的断裂中,其中断裂具有下部和上部; b)将间隔胶引入骨折中; c)将低密度支撑剂引入裂缝中; d)重复a),b)和c)的任何顺序,直到预定量的高密度支撑剂,间隔凝胶和低密度支​​撑剂已经被引入到断裂中; e)允许高密度支撑剂迁移到裂缝的下部并形成高密度支撑剂包; 和f)允许低密度支撑剂迁移到裂缝的上部并形成低密度支撑剂包。

    Enhancing the Conductivity of Propped Fractures
    8.
    发明申请
    Enhancing the Conductivity of Propped Fractures 审中-公开
    增强支撑骨折的电导率

    公开(公告)号:US20130312962A1

    公开(公告)日:2013-11-28

    申请号:US13477658

    申请日:2012-05-22

    IPC分类号: E21B43/267 E21B43/00

    摘要: Methods for enhancing the conductivity of propped fractures in subterranean formations may involve using a tackifier to minimize particulate settling during particulate placement operations in subterranean formations. For example, methods may involve introducing a first treatment fluid into a wellbore extending into a subterranean formation at a pressure sufficient to create or extend at least one fracture in the subterranean formation; and introducing a second treatment fluid into the wellbore at a pressure sufficient to maintain or extend the fracture in the subterranean formation. The first treatment fluid may include at least a first aqueous base fluid and a tackifier. The second treatment fluid may include at least a second aqueous base fluid and a proppant particle.

    摘要翻译: 增强地层中支撑骨折导电性的方法可能涉及使用增粘剂来最小化地下地层中颗粒物放置操作过程中的颗粒沉降。 例如,方法可以包括将第一处理流体引入到延伸到地下地层中的井眼中,该压力足以产生或延伸地下地层中的至少一个裂缝; 以及将第二处理流体以足以维持或延伸地层中的断裂的压力引入井眼。 第一处理流体可以包括至少第一含水基础流体和增粘剂。 第二处理流体可以包括至少第二含水基础流体和支撑剂颗粒。

    Pre-Coated Particulates for Preventing Scale and Diageneous Reactions in Subterranean Formations
    10.
    发明申请
    Pre-Coated Particulates for Preventing Scale and Diageneous Reactions in Subterranean Formations 有权
    预处理颗粒,用于防止地层中的尺度和异常反应

    公开(公告)号:US20120178652A1

    公开(公告)日:2012-07-12

    申请号:US13422899

    申请日:2012-03-16

    IPC分类号: C09K8/52

    CPC分类号: C09K8/528

    摘要: Pre-coated particulate for use in a subterranean operation comprising a particulate; and a film coated onto a surface of the particulate. The film is formed by allowing an anionic polymer and a cationic surfactant to contact the surface of the particulate, and allowing the anionic polymer and the cationic surfactant to interact with each other. In some cases, the anionic polymer is selected from the group consisting of a polyacrylamide; an alkylpolyacrylamide; a copolymer of polyacrylamide, with ethylene, propylene, and styrene; a copolymer of alkylpolyacrylamide with ethylene, propylene, and styrene; a polymaleic anhydride; and any derivatives thereof.

    摘要翻译: 用于地下操作的预涂颗粒,包括颗粒; 以及涂覆在颗粒表面上的膜。 通过使阴离子聚合物和阳离子表面活性剂与颗粒的表面接触并使阴离子聚合物和阳离子表面活性剂彼此相互作用形成膜。 在一些情况下,阴离子聚合物选自聚丙烯酰胺; 烷基聚丙烯酰胺; 聚丙烯酰胺与乙烯,丙烯和苯乙烯的共聚物; 烷基聚丙烯酰胺与乙烯,丙烯和苯乙烯的共聚物; 聚马来酸酐; 及其任何衍生物。