Systems and methods for treating a subterranean formation using carbon dioxide and a crosslinked fracturing fluid
    11.
    发明授权
    Systems and methods for treating a subterranean formation using carbon dioxide and a crosslinked fracturing fluid 失效
    使用二氧化碳和交联压裂液处理地层的系统和方法

    公开(公告)号:US07036597B2

    公开(公告)日:2006-05-02

    申请号:US10650375

    申请日:2003-08-28

    IPC分类号: E21B43/26

    摘要: The present invention relates to fluid systems comprising a first fluid comprising carbon dioxide and a second fluid comprising an alkaline crosslinked fluid. The fluid combinations of the present invention may be used, for example, in hydraulic fracturing, frac-packing, and gravel packing. Some embodiments of the present invention provide systems for treating a subterranean formation comprising a first fluid comprising a foamed carbon dioxide fluid, an emulsion of carbon dioxide, or a carbon dioxide gel; and, a second fluid comprising an alkaline crosslinked fluid.

    摘要翻译: 本发明涉及包含包含二氧化碳的第一流体和包含碱性交联流体的第二流体的流体系统。 本发明的流体组合可以用于例如水力压裂,压裂填料和砾石填充。 本发明的一些实施方案提供了用于处理地下地层的系统,其包括包含发泡二氧化碳流体,二氧化碳乳液或二氧化碳凝胶的第一流体; 以及包含碱性交联流体的第二流体。

    Testing device and method for viscosified fluid containing particulate material
    12.
    发明授权
    Testing device and method for viscosified fluid containing particulate material 有权
    含有颗粒材料的粘稠液体的测试装置和方法

    公开(公告)号:US06782735B2

    公开(公告)日:2004-08-31

    申请号:US10342173

    申请日:2003-01-14

    IPC分类号: G01N1114

    CPC分类号: G01N11/14

    摘要: A device and a method for testing a viscosified fluid containing particulate indicate when the particulate is in suspension within the fluid and when it is not. The device and method stir the fluid and particulate mixture for a time during which the viscosity of the fluid changes such that during a first period of the stirring time substantially all the particulate remains suspended in the fluid and during a second period of the stirring time substantially all the particulate settles out of suspension in the fluid. A signal is generated during the first and second periods such that the signal has a characteristic that changes from the first period to the second period to indicate the change in particle carrying ability of the fluid. Other characteristics, including crosslinking time, can also be determined. A test chamber includes interacting projections extending from the inner surface of a cup receiving the fluid and from an axial support extending into the fluid in the cup.

    摘要翻译: 用于测试含有颗粒的粘稠液体的装置和方法指示当颗粒在流体内悬浮时以及何时不是。 该装置和方法搅拌流体和颗粒状混合物一段时间,在此期间流体的粘度发生变化,使得在搅拌时间的第一阶段,基本上所有的颗粒保持悬浮在流体中,并且在搅拌时间的第二时间段内基本上 所有的颗粒都从液体中悬浮液中沉淀出来。 在第一和第二周期期间产生信号,使得信号具有从第一周期到第二周期变化的特征,以指示流体的粒子承载能力的变化。 还可以确定其他特征,包括交联时间。 测试室包括从容纳流体的杯的内表面和延伸到杯中的流体的轴向支撑件延伸的相互作用的突起。

    Two stage subterranean zone fracturing fluids and methods
    13.
    发明授权
    Two stage subterranean zone fracturing fluids and methods 失效
    两级地下压裂液和方法

    公开(公告)号:US07036590B2

    公开(公告)日:2006-05-02

    申请号:US10779010

    申请日:2004-02-13

    申请人: Phillip C. Harris

    发明人: Phillip C. Harris

    IPC分类号: E21B43/267

    摘要: The present invention discloses two stage subterranean zone fracturing fluids and methods. A two stage subterranean zone fracturing fluid of the invention comprises a first stage fluid comprising a foamed liquid containing a water soluble gel breaker and a second stage fluid that comprises a viscous liquid containing a metal cross-linked gelling agent. Another two stage subterranean zone fracturing fluid comprises a first stage fluid comprising a foamed liquid containing a water soluble gel breaker and a second stage fluid comprising a viscous liquid containing a borate cross-linked gelling agent.

    摘要翻译: 本发明公开了两级地下压裂液和方法。 本发明的两级地下压裂压裂液包括第一级流体,其包含含有水溶性凝胶破碎剂的泡沫液体和包含含有金属交联胶凝剂的粘性液体的第二级流体。 另一个两级地下压裂压裂液包括第一级流体,其包含含有水溶性凝胶破碎剂的泡沫液体和包含含有硼酸盐交联胶凝剂的粘性液体的第二级流体。

    Method for removing drill cuttings from wellbores and drilling fluids
    14.
    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。

    Aqueous gel fluids and methods of treating subterranean formations
    18.
    发明授权
    Aqueous gel fluids and methods of treating subterranean formations 失效
    水性凝胶流体和处理地下地层的方法

    公开(公告)号:US5439059A

    公开(公告)日:1995-08-08

    申请号:US209381

    申请日:1994-03-08

    IPC分类号: C09K8/62 C09K8/68 E21B43/267

    摘要: A gel fluid for treating a subterranean formation penetrated by a well bore including an aqueous liquid, an organic gelling agent and at least about 0.05% by weight, based on the weight of the aqueous liquid, of a broken gel fragment stabilizer. The gel fluid can optionally include crosslinking agents, proppant materials, pH buffers and other components. The broken gel fragment stabilizer is a dialkyl sulfosuccinate that has dispersing properties sufficient to diminish the propensity of broken gel fragments formed when the gel fluid breaks to agglomerate. Also provided is a method of treating a subterranean formation penetrated by a well bore. The inventive gel fluid and method are particularly suitable for fracturing a subterranean formation to stimulate the production of hydrocarbons therefrom.

    摘要翻译: 一种凝胶流体,用于处理由包含水性液体,有机胶凝剂的井眼穿透的地层,并且基于水性液体的重量,至少约0.05重量%的破裂的凝胶片段稳定剂。 凝胶流体可任选地包括交联剂,支撑剂材料,pH缓冲剂和其它组分。 破碎的凝胶片段稳定剂是二烷基磺基琥珀酸盐,其具有足够的分散性能,以降低当凝胶流体破裂成团聚时形成的破裂的凝胶碎片的倾向。 还提供了一种处理由井眼穿透的地层的方法。 本发明的凝胶流体和方法特别适用于压裂地层以刺激烃的生产。

    Fracturing method for stimulation of wells utilizing carbon dioxide
based fluids

    公开(公告)号:US4519455A

    公开(公告)日:1985-05-28

    申请号:US572732

    申请日:1984-01-20

    IPC分类号: C09K8/70 E21B43/26

    CPC分类号: E21B43/26 C09K8/703

    摘要: A method of fracturing a subterranean formation with a stabilized foamed fracturing fluid comprising from about 30 percent to in excess of about 95 percent by volume of carbon dioxide with the remainder comprising a substantially anhydrous liquid and a selected surfactant. The foam is formed in situ by injection of a stabilized liquid-liquid emulsion containing liquid carbon dioxide into a well bore penetrating the formation. The temperature and pressure of the emulsion is controlled to maintain the carbon dioxide in the liquid phase during injection into the well bore. Thereafter, the carbon dioxide is heated by the subterranean formation to a temperature above about 88.degree. F. at which time the stabilized emulsion spontaneously forms a high quality stabilized foam.

    Thermally stable, nonionic foaming agent for foam fracturing fluids
    20.
    发明授权
    Thermally stable, nonionic foaming agent for foam fracturing fluids 有权
    用于泡沫压裂液的热稳定的非离子发泡剂

    公开(公告)号:US08770295B2

    公开(公告)日:2014-07-08

    申请号:US13190523

    申请日:2011-07-26

    CPC分类号: C09K8/703 C09K8/38 C09K8/94

    摘要: A method foamed fracturing may include providing a wellbore that extends into a subterranean formation and introducing a foamed fracturing fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture in at least a portion of the subterranean formation. The foamed fracturing fluid may generally include an aqueous base fluid, a sugar derivative foaming agent, and a gas.

    摘要翻译: 一种发泡压裂方法可包括提供延伸到地下地层中的井筒,并以足以产生或增强至少一部分地下地层中的至少一个裂缝的压力将发泡压裂流体引入地下地层。 发泡压裂液通常可以包含碱性基础液,糖衍生物发泡剂和气体。