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    Apparatus and methods for determining the shear stress required for removing drilling fluid deposits
    1.
    发明授权
    Apparatus and methods for determining the shear stress required for removing drilling fluid deposits 失效
    用于确定去除钻井液沉积物所需的剪切应力的装置和方法

    公开(公告)号：US5361631A

    公开(公告)日：1994-11-08

    申请号：US113867

    申请日：1993-08-27

    Applicant: Rick L. Covington ,  Kris M. Ravi ,  Shawn A. Heath ,  Bryan Waugh

    Inventor： Rick L. Covington ,  Kris M. Ravi ,  Shawn A. Heath ,  Bryan Waugh

    IPC: E21B49/00

    CPC classification number: E21B49/005

    Abstract: Improved apparatus and methods for determining the shear stress required for removing drilling fluid deposits formed on the walls of a well bore are provided. The methods basically comprise introducing a drilling fluid into a test apparatus which simulates a permeable section of a well bore. Drilling fluid deposits are caused to be formed on the walls of the permeable section, and the drilling fluid is circulated through the permeable section at progressively increasing flow rates for time periods whereby the pressure drop of the drilling fluid stabilizes. The stabilized pressure drop below which no appreciable erosion of the deposits takes place is determined by acoustically measuring and comparing the thicknesses of the drilling fluid deposits at each of the flow rates when the pressure drop stabilized. The minimum shear stress required to erode the deposits is determined from the pressure drop below which no appreciable erosion of the drilling fluid deposits takes place and the erodability of the drilling fluid which is inversely proportionate to the minimum shear stress can also be determined.

    Abstract translation: 提供了用于确定用于去除形成在井眼的壁上的钻井液沉积所需的剪切应力的改进的装置和方法。 所述方法基本上包括将钻井流体引入到模拟井眼的可渗透部分的测试装置中。 使钻井液沉积物形成在可渗透部分的壁上，并且钻井流体以逐渐增加的流速循环通过可渗透部分，从而使钻井液体的压降稳定。 通过在压降稳定时通过声学测量和比较在每个流速下的钻井液沉积物的厚度来确定低于该沉积物的明显腐蚀的稳定的压降。 腐蚀沉积物所需的最小剪切应力由压降决定，在该压降以下不会发生钻井液沉积物的明显侵蚀，并且与最小剪切应力成反比的钻井液的侵蚀性也可以确定。

    Method of measuring a set cement density and settling properties
    2.
    发明授权
    Method of measuring a set cement density and settling properties 有权
    测定凝结水泥密度和沉降特性的方法

    公开(公告)号：US07631541B2

    公开(公告)日：2009-12-15

    申请号：US11868708

    申请日：2007-10-08

    Applicant: Bryan Waugh ,  Christopher Gordon

    Inventor： Bryan Waugh ,  Christopher Gordon

    IPC: G01N9/00

    CPC classification number: G01N9/12 ,  G01N1/04 ,  G01N33/383 ,  G01N2203/0092

    Abstract: An improved method for measuring the density and settling properties of cement slurries. The cement slurry is stirred in a consistometer and heated to a predetermined temperature. The stirring of the cement slurry is then halted and the cement slurry is cooled. The cement slurry is then removed from the consistometer.

    Abstract translation: 一种改进的测量水泥浆密度和沉降特性的方法。 将水泥浆在稠度计中搅拌并加热至预定温度。 然后停止搅拌水泥浆，并将水泥浆冷却。 然后将水泥浆从稠度计中取出。

    Method of Measuring a Set Cement Density and Settling Properties
    3.
    发明申请
    Method of Measuring a Set Cement Density and Settling Properties 有权
    测定水泥密度和沉降特性的方法

    公开(公告)号：US20090090180A1

    公开(公告)日：2009-04-09

    申请号：US11868708

    申请日：2007-10-08

    Applicant: Bryan Waugh ,  Christopher Gordon

    Inventor： Bryan Waugh ,  Christopher Gordon

    IPC: G01N9/00

    CPC classification number: G01N9/12 ,  G01N1/04 ,  G01N33/383 ,  G01N2203/0092

    Abstract: An improved method for measuring the density and settling properties of cement slurries. The cement slurry is stirred in a consistometer and heated to a predetermined temperature. The stirring of the cement slurry is then halted and the cement slurry is cooled. The cement slurry is then removed from the consistometer.

    Abstract translation: 一种改进的测量水泥浆密度和沉降特性的方法。 将水泥浆在稠度计中搅拌并加热至预定温度。 然后停止搅拌水泥浆，并将水泥浆冷却。 然后将水泥浆从稠度计中取出。

    Compositions Comprising Melt-Processed Inorganic Fibers and Methods of Using Such Compositions
    5.
    发明申请
    Compositions Comprising Melt-Processed Inorganic Fibers and Methods of Using Such Compositions 有权
    包含熔融加工的无机纤维的组合物和使用这种组合物的方法

    公开(公告)号：US20080103065A1

    公开(公告)日：2008-05-01

    申请号：US11940173

    申请日：2007-11-14

    Applicant: B. Reddy ,  Krishna Ravi ,  Bryan Waugh

    Inventor： B. Reddy ,  Krishna Ravi ,  Bryan Waugh

    IPC: C09K8/00

    CPC classification number: C04B28/02 ,  C04B14/38 ,  C09K8/16 ,  C09K8/467 ,  C09K8/487 ,  Y10S507/906 ,  C04B14/42 ,  C04B14/4643 ,  C04B14/465 ,  C04B14/4668 ,  C04B14/48 ,  C04B22/0026 ,  C04B38/10 ,  C04B14/46

    Abstract: Improved lost circulation compositions that include melt-processed inorganic fibers and methods for using such compositions in subterranean formations are provided. An example of a method of the present invention is a method comprising providing a drilling mud comprising a plurality of melt-processed inorganic fibers, wherein the melt-processed inorganic fibers have a length of less than about 10 millimeters, and comprise at least one melt-processed inorganic fiber selected from the group consisting of: a basalt fiber, a wollastonite fiber, and a ceramic fiber; and circulating the drilling mud in the subterranean formation.

    Abstract translation: 提供了包括熔融加工的无机纤维的改进的缺失循环组合物和在地下地层中使用这种组合物的方法。 本发明的方法的一个实例是提供一种包括多个熔融加工的无机纤维的钻井泥浆的方法，其中熔融加工的无机纤维的长度小于约10毫米，并且包括至少一种熔体 - 选自以下的加工无机纤维：玄武岩纤维，硅灰石纤维和陶瓷纤维; 并将钻井泥浆循环在地层中。

    Compositions comprising melt-processed inorganic fibers and methods of using such compositions
    6.
    发明申请
    Compositions comprising melt-processed inorganic fibers and methods of using such compositions 审中-公开
    包含熔融加工的无机纤维的组合物和使用这种组合物的方法

    公开(公告)号：US20060157244A1

    公开(公告)日：2006-07-20

    申请号：US11272951

    申请日：2005-11-14

    Applicant: B. Reddy ,  Krishna Ravi ,  Bryan Waugh

    Inventor： B. Reddy ,  Krishna Ravi ,  Bryan Waugh

    IPC: E21B33/13

    CPC classification number: C04B28/02 ,  C04B14/38 ,  C09K8/16 ,  C09K8/467 ,  C09K8/487 ,  Y10S507/906 ,  C04B14/42 ,  C04B14/4643 ,  C04B14/465 ,  C04B14/4668 ,  C04B14/48 ,  C04B22/0026 ,  C04B38/10 ,  C04B14/46

    Abstract: Improved lost circulation compositions that include melt-processed inorganic fibers and methods for using such compositions in subterranean formations are provided. An example of a method of the present invention is a method of cementing in a subterranean formation. Another example of a method of the present invention is a method comprising providing a cement composition that comprises cement, water, and a plurality of melt-processed inorganic fibers, the melt-processed inorganic fibers having a mean aspect ratio of greater than about 25, a specific gravity of greater than about 1.2, and a length of less than about 10 millimeters; introducing the cement composition into a well bore that penetrates a subterranean formation; and allowing the melt-processed inorganic fibers to at least partially prevent fluid loss from the cement composition into the subterranean formation. An example of a composition of the present invention is a cement composition for use in a subterranean formation.

    Abstract translation: 提供了包括熔融加工的无机纤维的改进的缺失循环组合物和在地下地层中使用这种组合物的方法。 本发明的方法的一个实例是在地层中固井的方法。 本发明方法的另一个实例是提供包含水泥，水和多种熔融加工的无机纤维的水泥组合物的方法，熔融加工的无机纤维的平均纵横比大于约25， 比重大于约1.2，长度小于约10毫米; 将水泥组合物引入渗透地下地层的井眼; 并且允许熔融加工的无机纤维至少部分地防止从水泥组合物流入地层的流体损失。 本发明的组合物的实例是用于地层的水泥组合物。

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