OXIDATIVE SYSTEMS FOR BREAKING POLYMER VISCOSIFIED FLUIDS
    5.
    发明申请
    OXIDATIVE SYSTEMS FOR BREAKING POLYMER VISCOSIFIED FLUIDS 有权
    用于破坏聚合物粘稠流体的氧化系统

    公开(公告)号:US20080099207A1

    公开(公告)日:2008-05-01

    申请号:US11554834

    申请日:2006-10-31

    IPC分类号: E21B43/26

    摘要: A fluid breaking composition including an effective amount of an alkali chlorite and/or hyperchlorite is disclosed, where the composition reduces a viscosity of a polymer viscosified fluid to a desired low value at down hole conditions within a time period coincident with a formation stimulation time, generally between about 30 minutes and 195 minutes. Methods for making and using the breaking composition are also disclosed.

    摘要翻译: 公开了一种包含有效量的碱性亚氯酸盐和/或高氯酸盐的流体破坏组合物,其中组合物在与地层刺激时间一致的时间段内在井下条件下将聚合物稠化流体的粘度降低到期望的低值, 通常在约30分钟至195分钟之间。 还公开了制备和使用破碎组合物的方法。

    Methods of reducing water permeability for acidizing a subterranean formation
    6.
    发明授权
    Methods of reducing water permeability for acidizing a subterranean formation 有权
    降低渗透性以酸化地下地层的方法

    公开(公告)号:US07182136B2

    公开(公告)日:2007-02-27

    申请号:US10612271

    申请日:2003-07-02

    IPC分类号: E21B43/28 E21B33/138

    CPC分类号: C09K8/76 C09K8/68 C09K8/882

    摘要: The present invention provides a method of stimulating a subterranean formation penetrated by a well. The formation has a water-bearing section and a hydrocarbon-bearing section. The method includes the steps of: (a) introducing into the formation an aqueous treatment fluid containing a hydrophobically-modified relative permeability modifier, and (b) introducing an acidizing treatment fluid into the formation. The hydrophobically-modified RPM can be formed and introduced into the formation in several ways. For example, the hydrophobically-modified RPM can be the reaction product of a hydrophilic polymer and a hydrophobic compound that are capable of reacting with each other. The hydrophilic polymer is a polymer containing reactive amino groups in the polymer backbone or as pendant groups, which are capable of reacting with a hydrophobic alkyl halide compound. The hydrophobically-modified RPM can include, for example, a polymer of DMAEMA quaternized with an alkyl halide, wherein the alkyl halide has an alkyl chain length of 6 to 22 carbons.

    摘要翻译: 本发明提供了一种刺激由井渗透的地层的方法。 该地层具有含水段和含烃段。 该方法包括以下步骤:(a)向地层中引入含有疏水改性的相对渗透性改性剂的水性处理流体,和(b)将酸化处理流体引入地层中。 疏水改性的RPM可以以几种方式形成并引入到地层中。 例如,疏水改性的RPM可以是能够彼此反应的亲水性聚合物和疏水性化合物的反应产物。 亲水性聚合物是在聚合物主链中含有反应性氨基的聚合物或能够与疏水性烷基卤化合物反应的侧基。 疏水改性的RPM可以包括例如用烷基卤季铵化的DMAEMA的聚合物,其中烷基卤具有6至22个碳的烷基链长度。

    Retrievable screen apparatus and methods of using same
    7.
    发明授权
    Retrievable screen apparatus and methods of using same 失效
    可检索的屏幕装置及其使用方法

    公开(公告)号:US5762137A

    公开(公告)日:1998-06-09

    申请号:US642037

    申请日:1996-04-29

    摘要: A retrievable screen apparatus provides increased filtration in a retrievable screen disposed within a receptacle, the receptacle being positioned in a subterranean well. The receptacle has a lower filtration screen attached thereto for filtering larger particles, such as gravel and proppant, from fluid flow within the well. Thus, the retrievable screen may be retrieved and replaced, leaving the receptacle operatively positioned in the well.

    摘要翻译: 可回收的筛网装置在设置在容器内的可回收筛网中提供增加的过滤,该容器定位在地下井中。 容器具有附接到其上的较低过滤网,用于从井内的流体流中过滤较大的颗粒,例如砾石和支撑剂。 因此,可检索和替换可检索的屏幕,使得容器可操作地定位在井中。

    Oxidative systems for breaking polymer viscosified fluids
    8.
    发明授权
    Oxidative systems for breaking polymer viscosified fluids 有权
    用于破坏聚合物粘稠流体的氧化系统

    公开(公告)号:US07712535B2

    公开(公告)日:2010-05-11

    申请号:US11554834

    申请日:2006-10-31

    IPC分类号: E21B43/26 E09K8/62

    摘要: A fluid breaking composition which includes an effective amount of an alkali chlorite and/or hyperchlorite, where the composition reduces a viscosity of a polymer viscosified fluid to a desired low value at down hole conditions within a time period coincident with a formation stimulation time, generally between about 30 minutes and 195 minutes and to methods for making and using the breaking composition.

    摘要翻译: 一种流体破坏组合物,其包含有效量的碱性亚氯酸盐和/或高氯酸盐,其中组合物在与地层刺激时间相符的时间段内将聚合物稠化流体的粘度降低至井下条件下的期望低值,通常 约30分钟至195分钟,以及制备和使用破碎组合物的方法。

    Methods of reducing water permeability for acidizing a subterranean formation
    9.
    发明申请
    Methods of reducing water permeability for acidizing a subterranean formation 有权
    降低渗透性以酸化地下地层的方法

    公开(公告)号:US20050000694A1

    公开(公告)日:2005-01-06

    申请号:US10612271

    申请日:2003-07-02

    IPC分类号: C09K8/72 C09K8/88 E21B43/16

    CPC分类号: C09K8/76 C09K8/68 C09K8/882

    摘要: The present invention provides a method of stimulating a subterranean formation penetrated by a well. The formation has a water-bearing section and a hydrocarbon-bearing section. The method includes the steps of: (a) introducing into the formation an aqueous treatment fluid containing a hydrophobically-modified relative permeability modifier, and (b) introducing an acidizing treatment fluid into the formation. The hydrophobically-modified RPM can be formed and introduced into the formation in several ways. For example, the hydrophobically-modified RPM can be the reaction product of a hydrophilic polymer and a hydrophobic compound that are capable of reacting with each other. The hydrophilic polymer is a polymer containing reactive amino groups in the polymer backbone or as pendant groups, which are capable of reacting with a hydrophobic alkyl halide compound. The hydrophobically-modified RPM can include, for example, a polymer of DMAEMA quaternized with an alkyl halide, wherein the alkyl halide has an alkyl chain length of 6 to 22 carbons.

    摘要翻译: 本发明提供了一种刺激由井渗透的地层的方法。 该地层具有含水段和含烃段。 该方法包括以下步骤:(a)向地层中引入含有疏水改性的相对渗透性改性剂的水性处理流体,和(b)将酸化处理流体引入地层中。 疏水改性的RPM可以以几种方式形成并引入到地层中。 例如,疏水改性的RPM可以是能够彼此反应的亲水性聚合物和疏水性化合物的反应产物。 亲水性聚合物是在聚合物主链中含有反应性氨基的聚合物或能够与疏水性烷基卤化合物反应的侧基。 疏水改性的RPM可以包括例如用烷基卤季铵化的DMAEMA的聚合物,其中烷基卤具有6至22个碳的烷基链长度。

    Method of using a retrievable screen apparatus
    10.
    发明授权
    Method of using a retrievable screen apparatus 失效
    使用可检索屏幕装置的方法

    公开(公告)号:US5857521A

    公开(公告)日:1999-01-12

    申请号:US927924

    申请日:1997-09-11

    摘要: A retrievable screen apparatus provides increased filtration in a retrievable screen disposed within a receptacle, the receptacle being positioned in a subterranean well. The receptacle has a lower filtration screen attached thereto for filtering larger particles, such as gravel and proppant, from fluid flow within the well. Thus, the retrievable screen may be retrieved and replaced, leaving the receptacle operatively positioned in the well.

    摘要翻译: 可回收的筛网装置在设置在容器内的可回收筛网中提供增加的过滤,该容器定位在地下井中。 容器具有附接到其上的较低过滤网,用于从井内的流体流中过滤较大的颗粒,例如砾石和支撑剂。 因此,可检索和替换可检索的屏幕,使得容器可操作地定位在井中。