Oil well bore hole filter cake breaker fluid test apparatus and method

    公开(公告)号:US06543276B2

    公开(公告)日:2003-04-08

    申请号:US09861362

    申请日:2001-05-18

    IPC分类号: G01N1504

    CPC分类号: G01N15/08

    摘要: A method and apparatus for determining the effectiveness and reaction time of a breaker fluid in breaking a filter cake on the wall of a wellbore penetrating a subterranean formation is disclosed. The method comprises employing an apparatus, such as for example the apparatus of the invention with a filter medium and the capability of applying differential pressure or dynamic conditions to form a filter cake on the filter medium with drilling mud. Breaker fluid is then substituted for the drilling mud, preferably without damage to the filter cake. The quantity of breaker fluid passing across the filter medium under static conditions is monitored over time. An increase in the rate of fluid passing across or through the medium indicates break-up of the filter cake.

    Method for characterizing water-in-oil emulsions using electrical wave forms
    2.
    发明授权
    Method for characterizing water-in-oil emulsions using electrical wave forms 有权
    使用电波形式表征油包水乳液的方法

    公开(公告)号:US06906535B2

    公开(公告)日:2005-06-14

    申请号:US10137681

    申请日:2002-05-02

    摘要: A method is provided for characterizing emulsion stability to evaluate suitability of the emulsion for use as a drilling fluid in drilling subterranean boreholes. The method provides a supplement or alternative to the standard method of determining Electrical Stability of the emulsion. In the method of the invention, Breakdown Energy is calculated. Breakdown Energy can be measured at the same test point as Electrical Stability. A digital storage oscilloscope and a computer are used in addition to an electrical stability meter.

    摘要翻译: 提供了一种用于表征乳液稳定性以评估用于钻井地下钻孔中的钻井液的乳液的适用性的方法。 该方法提供了确定乳液电气稳定性的标准方法的补充或替代方法。 在本发明的方法中,计算击穿能量。 击穿能量可以在与电气稳定性相同的测试点测量。 使用数字存储示波器和计算机以及电气稳定度计。

    High pressure brine crystallization point apparatus
    3.
    发明授权
    High pressure brine crystallization point apparatus 有权
    高压盐水结晶点仪

    公开(公告)号:US06604852B1

    公开(公告)日:2003-08-12

    申请号:US09733825

    申请日:2000-12-09

    IPC分类号: G01N2504

    摘要: An apparatus and method for determining the crystallization point of high pressure fluids comprising brine are disclosed. The apparatus comprises a temperature probe and an optical fiber probe to determine the temperature of formation and dissolution of crystals during cooling and warming cycles. The apparatus further comprises a pressurization source, preferably a positive displacement pump or connection to a positive displacement pump for pressurizing the sample. The apparatus further preferably includes a jacket for circulating coolant or heat transfer fluid to facilitate cooling of the sample. The method of the invention uses the apparatus of the invention to determine crystallization point of fluid samples.

    摘要翻译: 公开了一种用于确定包含盐水的高压流体的结晶点的装置和方法。 该装置包括温度探针和光纤探针,以确定在冷却和加热循环期间晶体形成和溶解的温度。 该装置还包括加压源,优选为容积式泵或与用于对样品加压的容积式泵的连接。 该装置还优选地包括用于使冷却剂或传热流体循环以便于冷却样品的护套。 本发明的方法使用本发明的装置来确定流体样品的结晶点。

    Electrode holder useful in a corrosion testing device
    4.
    发明授权
    Electrode holder useful in a corrosion testing device 失效
    用于腐蚀测试装置的电极座

    公开(公告)号:US4606891A

    公开(公告)日:1986-08-19

    申请号:US625771

    申请日:1984-06-28

    CPC分类号: G01N17/02

    摘要: The present invention is directed to an apparatus and method for holding one or more test electrodes of precisely known exposed surface area. The present invention is particularly useful in a device for determining the corrosion properties of the materials from which the test electrodes have been formed. The present invention relates to a device and method for holding the described electrodes wherein the exposed surface area of the electrodes is only infinitesimally decreased. Further, in the present invention the exposed, electrically conductive surface area of the contact devices is small relative to the test electrode surface area. The holder of the present invention conveniently comprises a device for contacting and engaging each test electrode at two point contacts infinitesimally small in relation to the exposed surface area of the electrodes.

    摘要翻译: 本发明涉及一种用于保持具有精确已知的暴露表面积的一个或多个测试电极的装置和方法。 本发明特别可用于确定已形成测试电极的材料的腐蚀性能的装置。 本发明涉及一种用于保持所述电极的装置和方法,其中电极的暴露表面积仅仅是微不足道地减小。 此外,在本发明中,接触装置的暴露的导电表面积相对于试验电极表面积较小。 本发明的保持器方便地包括用于在两个点接触处接触和接合每个测试电极的装置,其极小地相对于电极的暴露表面积。

    Apparatus and method for analyzing well fluid sag
    5.
    发明授权
    Apparatus and method for analyzing well fluid sag 有权
    用于分析井下流体凹陷的装置和方法

    公开(公告)号:US06584833B1

    公开(公告)日:2003-07-01

    申请号:US10162795

    申请日:2002-05-30

    IPC分类号: G01N3340

    摘要: An apparatus and method are disclosed for measuring or analyzing dynamic and static sag caused by settling of weighting materials in drilling fluids or other solids bearing fluid. The apparatus comprises a tube and shear shaft assembly that allows for a controlled rate of shear to be applied to a sample of the fluid for testing. During a test, the assembly is placed on a pivotal holder at an angle. The assembly has pistons at the pivot center of the assembly which accommodate expansion and contraction of the test fluid due to changes in temperature and pressure, thereby allowing the test fluid to be heated, cooled and pressurized to simulate subterranean wellbore conditions without changing the center of mass of the test fluid. When weight material settles down the inclined assembly, the center of mass of the assembly changes resulting in changing torque or moment about the pivotal holder. The resultant moment is measured by energizing external coils arranged to provide a uniform magnetic field. The bulk average settling rate is determined using the measured coil current rate of change.

    摘要翻译: 公开了一种用于测量或分析由钻井液或其他固体载体流体中的称重材料沉降引起的动态和静态下垂的装置和方法。 该装置包括管和剪切轴组件,其允许将受控的剪切速率施加到用于测试的流体样品。 在测试期间,组件以一定角度放置在枢转保持器上。 该组件在组件的枢转中心处具有活塞,其适应由于温度和压力的变化引起的测试流体的膨胀和收缩,从而允许测试流体被加热,冷却和加压以模拟地下井眼条件而不改变测试流体的中心 质量的测试流体。 当重量材料沉降在倾斜组件上时,组件的质心发生变化,从而导致枢转保持器周围的扭矩或力矩发生变化。 所得到的时刻是通过激励设置成提供均匀磁场的外部线圈来测量的。 使用测量的线圈电流变化率确定体积平均建立速率。

    Optimization visualization using normalized achievement variables

    公开(公告)号:US10175385B2

    公开(公告)日:2019-01-08

    申请号:US13478316

    申请日:2012-05-23

    IPC分类号: G01V3/00 G01V99/00 E21B44/00

    摘要: The present disclosure describes various systems and methods for creating and presenting optimization visualizations that use normalized achievement variables. At least one illustrative method includes defining achievement functions that each operates on at least one of several achievement variables (each of the achievement variables representing a characteristic of a physical object or process), and transforming value ranges for at least two achievement variables into corresponding achievement level ranges by applying at least one of the achievement functions to the value ranges of the achievement variables (the achievement variables being a function of at least one common control variable). The method further includes combining the corresponding achievement level ranges to produce a combined achievement level range, and presenting a visual representation of the combined achievement level range to a user, enabling the user to select value ranges for the common control variable.

    Apparatus and method for constant shear rate and oscillatory rheology measurements
    7.
    发明授权
    Apparatus and method for constant shear rate and oscillatory rheology measurements 有权
    用于恒定剪切速率和振荡流变学测量的装置和方法

    公开(公告)号:US09274038B2

    公开(公告)日:2016-03-01

    申请号:US13403701

    申请日:2012-02-23

    IPC分类号: G01N11/14

    CPC分类号: G01N11/14

    摘要: A rheometer instrument including a stationary frame, a sleeve suspended from the frame, a bob suspended within the sleeve, a cross-spring pivot suspending the bob from the stationary frame, and a force rebalance system for effecting the rotational displacement of the bob with a torque. The force rebalance system includes an arm attached to the movable portion of the cross-spring pivot, a rotational position sensor in close proximity to the arm for measuring the rotational displacement and angular frequency of the arm, and a force actuator positioned to apply force to the arm. The rheometer instrument may be used to calculate the rheological properties of Newtonian and non-Newtonian fluids.

    摘要翻译: 一种流变仪,包括固定框架,从框架悬挂的套筒,悬挂在套筒内的吊杆,将摆锤从固定框架悬挂的交叉弹簧枢轴,以及用于实现摇摆器的旋转位移的力重新平衡系统 扭矩。 力重平衡系统包括附接到交叉弹簧枢轴的可动部分的臂,靠近臂的旋转位置传感器,用于测量臂的旋转位移和角频率,以及力致动器,其被施加到力 手臂。 流变仪可用于计算牛顿和非牛顿流体的流变特性。

    METHODS TO CHARACTERIZE SAG IN FLUIDS

    公开(公告)号:US20130186197A1

    公开(公告)日:2013-07-25

    申请号:US13756114

    申请日:2013-01-31

    IPC分类号: G01N9/36

    摘要: Systems and methods for direct and indirect measurement of the density of a fluid which exhibits sag characteristics is disclosed. The sag measurement system includes a test container for holding a fluid mixture to be analyzed and a suction port on the test container. A pump is coupled to the suction port for circulating the fluid mixture from the test container through a circulation loop. A measurement device is coupled to the circulation loop and a return port directs the fluid mixture from the circulation loop back to the test container at substantially the same vertical location as the suction port. The fluid mixture flowing through the circulation loop passes through the measurement device before returning to the test container through the return port. The measurement device is operable to monitor the particle distribution of the fluid mixture as it changes due to gravity.

    Methods to characterize sag in fluids
    10.
    发明授权
    Methods to characterize sag in fluids 有权
    表征流体下垂的方法

    公开(公告)号:US08387442B2

    公开(公告)日:2013-03-05

    申请号:US12685348

    申请日:2010-01-11

    IPC分类号: G01N11/02

    摘要: Systems and methods for direct and indirect measurement of the density of a fluid which exhibits sag characteristics is disclosed. The sag measurement system includes a test container for holding a fluid mixture to be analyzed and a suction port on the test container. A pump is coupled to the suction port for circulating the fluid mixture from the test container through a circulation loop. A measurement device is coupled to the circulation loop and a return port directs the fluid mixture from the circulation loop back to the test container at substantially the same vertical location as the suction port. The fluid mixture flowing through the circulation loop passes through the measurement device before returning to the test container through the return port. The measurement device is operable to monitor the particle distribution of the fluid mixture as it changes due to gravity.

    摘要翻译: 公开了用于直接和间接测量显示出松弛特性的流体密度的系统和方法。 下垂测量系统包括用于保持要分析的流体混合物的测试容器和测试容器上的吸入口。 泵耦合到吸入口,用于使流体混合物从测试容器循环通过循环回路。 测量装置耦合到循环回路,并且返回端口将流体混合物从循环回路引导回到与吸入口基本相同的垂直位置处的测试容器。 流经循环回路的流体混合物在通过返回口回到测试容器之前通过测量装置。 测量装置可操作以监测流体混合物由于重力而变化时的颗粒分布。