Oilwell sealant compositions comprising alkali swellable latex

    公开(公告)号:US20060122071A1

    公开(公告)日:2006-06-08

    申请号:US11010117

    申请日:2004-12-08

    IPC分类号: E21B43/00 C09K8/00

    摘要: Sealant compositions comprising an alkali swellable latex and a pH increasing material and methods of using the same to service a wellbore are provided. In one embodiment, the sealant composition can be used in a wellbore and includes an alkali swellable latex and a pH increasing material. The sealant composition can have a pH of from about 7 to about 14. In other embodiments, the pH increasing material includes a base-producing material. The base-producing material can include alkali and alkali earth metal carbonates, alkali and alkali earth metal bicarbonates, alkali and alkali earth metal hydroxides, alkali and alkali earth metal oxides, alkali and alkali earth metal phosphates, alkali and alkali earth metal hydrogen phosphates, alkali and alkaline earth metal sulphides, alkali and alkaline earth metal salts of silicates, alkali and alkaline earth metal salts of aluminates, water soluble or water dispersible organic amines, polymeric amine, amino alcohols, or combinations thereof.

    Methods and compositions for controlling lost circulation in subterranean operations
    2.
    发明申请
    Methods and compositions for controlling lost circulation in subterranean operations 有权
    控制地下作业中流失的方法和组成

    公开(公告)号:US20060096759A1

    公开(公告)日:2006-05-11

    申请号:US10982016

    申请日:2004-11-05

    IPC分类号: E21B33/138 E21B21/00

    摘要: A lost circulation composition, that comprises a first portion of particles having a weight mean particle size of less than about 20 microns, a second portion of particles having a weight mean particle size in the range of from about 25 microns to about 400 microns, and a third portion of particles having a weight mean particle size in the range of from about 450 microns to about 1,500 microns, wherein the lost circulation composition has a multimodal particle size distribution, is provided, wherein resilient particles, particles comprising a thermoset polymer laminate, or a combination thereof are present in the lost circulation composition in an amount of at least about 20% by weight of the lost circulation composition, is provided. Drilling fluids, methods of controlling lost circulation, and methods of increasing an effective fracture gradient while drilling also are provided.

    摘要翻译: 一种失去循环的组合物,其包含重量平均粒度小于约20微米的第一部分颗粒,重量平均粒径在约25微米至约400微米范围内的第二部分颗粒,以及 提供了重量平均粒度在约450微米至约1,500微米范围内的颗粒的第三部分,其中所述缺失循环组合物具有多峰粒度分布,其中弹性颗粒包含热固性聚合物层压体的颗粒, 或其组合在损失循环组合物中的含量为至少约20重量%的损失循环组合物的量。 提供钻井液,控制流失的方法以及在钻井时提高有效断裂梯度的方法。

    Methods for wellbore strengthening and controlling fluid circulation loss
    3.
    发明申请
    Methods for wellbore strengthening and controlling fluid circulation loss 有权
    井眼加强和控制流体循环损失的方法

    公开(公告)号:US20070017676A1

    公开(公告)日:2007-01-25

    申请号:US11186192

    申请日:2005-07-21

    申请人: B. Reddy Mark Savery

    发明人: B. Reddy Mark Savery

    IPC分类号: E21B33/138

    摘要: A sealant composition and methods for using the same are disclosed. In an embodiment, a method of servicing a wellbore in contact with a subterranean formation is disclosed. The method comprises placing a sealing agent and a nonaqueous carrier fluid in the wellbore. The method further comprises placing a nonaqueous activating fluid in the wellbore. In addition, the method comprises contacting the sealing agent with the nonaqueous activating fluid to form a sealant composition.

    摘要翻译: 公开了密封剂组合物及其使用方法。 在一个实施例中,公开了一种维护与地下地层接触的井筒​​的方法。 该方法包括将密封剂和非水载体流体放置在井眼中。 该方法还包括将非水活化流体置于井眼中。 此外,该方法包括使密封剂与非水活化流体接触以形成密封剂组合物。

    Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone
    4.
    发明申请
    Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone 有权
    在封堵组合物中产生气体以提高其在井下渗透区域中的密封能力的方法

    公开(公告)号:US20060084580A1

    公开(公告)日:2006-04-20

    申请号:US10967121

    申请日:2004-10-18

    IPC分类号: E21B43/00 E21B33/00

    CPC分类号: C09K8/516 E21B33/138

    摘要: Methods of servicing a wellbore include generating gas in a plugging composition in situ within a permeable zone in the wellbore, thereby improving the ability of the plugging composition to seal the permeable zone. The gas may be generated via a chemical reaction by, for example, introducing first and second reactants to the plugging composition that can react at ambient temperatures in the wellbore. In an embodiment, the first and second reactants are concurrently pumped into the wellbore via separate flow paths within two concentric conduits to the permeable zone where they are allowed to contact each other in the presence of the plugging composition. In another embodiment, the first reactant, the second reactant, and a retarder for slowing the reaction between the two reactants are concurrently pumped to the permeable zone. In yet another embodiment, one of the reactants is encapsulated to delay a reaction between the two reactants.

    摘要翻译: 维护井筒的方法包括在井筒内的可渗透区域内原位生成堵塞组合物中的气体,从而提高堵塞组合物密封可渗透区域的能力。 可以通过例如将第一和第二反应物引入到可在井眼中的环境温度下反应的堵塞组合物的化学反应来产生气体。 在一个实施方案中,第一和第二反应物同时通过在渗透区域的两个同心管道内的分离的流动路径泵送到井筒中,在渗透区域允许它们在堵塞组合物的存在下彼此接触。 在另一个实施方案中,用于减缓两种反应物之间的反应的第一反应物,第二反应物和延迟剂同时泵送到可渗透区域。 在另一个实施方案中,一种反应物被包封以延迟两种反应物之间的反应。

    Methods for using high-yielding non-Newtonian fluids for severe lost circulation prevention
    5.
    发明授权
    Methods for using high-yielding non-Newtonian fluids for severe lost circulation prevention 有权
    使用高产非牛顿流体预防严重流失的方法

    公开(公告)号:US07499846B2

    公开(公告)日:2009-03-03

    申请号:US11175973

    申请日:2005-07-06

    IPC分类号: G06G7/48

    CPC分类号: E21B21/003 E21B21/062

    摘要: A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are performed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.

    摘要翻译: 公开了一种用于建模和分析高产非牛顿流体的混合能量以防止化学物质流失的系统和方法。 在不同条件下进行实验室测试,从中获得需要优化使用高产非牛顿流体以防止流失的混合能量的数据。 然后将该数据应用于能够缩放数据以给出无量纲值的非线性数学建模系统。 该值可与历史信息结合,以预测最佳流速和混合物,以防止化学品流失。 该数据可以通过模拟,实验室测试或全尺寸井的应用来验证。

    Methods and systems for using high-yielding non-Newtonian fluids for severe lost circulation prevention
    6.
    发明授权
    Methods and systems for using high-yielding non-Newtonian fluids for severe lost circulation prevention 有权
    使用高产非牛顿流体预防严重流失的方法和系统

    公开(公告)号:US07325607B2

    公开(公告)日:2008-02-05

    申请号:US11175977

    申请日:2005-07-06

    IPC分类号: E21B47/00 E21B21/08 E21B44/00

    CPC分类号: E21B21/003

    摘要: A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation. Laboratory tests are performed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.

    摘要翻译: 一种用于建模和分析高产非牛顿流体的混合能量以防止化学品流失的系统和方法。 在不同条件下进行实验室测试,从中获得需要优化使用高产非牛顿流体以防止流失的混合能量的数据。 然后将该数据应用于能够缩放数据以给出无量纲值的非线性数学建模系统。 该值可与历史信息结合,以预测最佳流速和混合物,以防止化学品流失。 该数据可以通过模拟,实验室测试或全尺寸井的应用来验证。

    Mixing energy analysis of high-yielding non-newtonian fluids for severe lost circulation prevention
    8.
    发明申请
    Mixing energy analysis of high-yielding non-newtonian fluids for severe lost circulation prevention 有权
    高产非牛顿流体混合能量分析用于严重的流失预防

    公开(公告)号:US20070007006A1

    公开(公告)日:2007-01-11

    申请号:US11175977

    申请日:2005-07-06

    CPC分类号: E21B21/003

    摘要: A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are preformed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.

    摘要翻译: 公开了一种用于建模和分析高产非牛顿流体的混合能量以防止化学物质流失的系统和方法。 在不同的条件下进行实验室测试,从中获得需要优化使用高产非牛顿流体以防止流失的混合能量的数据。 然后将该数据应用于能够缩放数据以给出无量纲值的非线性数学建模系统。 该值可与历史信息结合,以预测最佳流速和混合物,以防止化学品流失。 该数据可以通过模拟,实验室测试或全尺寸井的应用来验证。