公开(公告)号：US20050039527A1

公开(公告)日：2005-02-24

申请号：US10644284

申请日：2003-08-20

申请人： Brindesh Dhruva ,  Elizabeth B. Dussan V. ,  Aaron Jacobson ,  Jagdish Shah ,  Stephane Pierre ,  Fredrick Jenet ,  Michael Supp ,  Jennifer Trittschuh

发明人： Brindesh Dhruva ,  Elizabeth B. Dussan V. ,  Aaron Jacobson ,  Jagdish Shah ,  Stephane Pierre ,  Fredrick Jenet ,  Michael Supp ,  Jennifer Trittschuh

IPC分类号： E21B49/00 ,  E21B49/10 ,  E21B47/06

CPC分类号： E21B49/10 ,  E21B49/008

摘要： A method for determining formation fluid pressure in earth formation surrounding a borehole wall uses a downhole probe coupled to a variable-volume cavity. The probe is driven into contact with formation at the borehole wall. The method includes expanding the volume of the cavity during a first period of time to establish fluid communication between tool fluid and formation fluid, by withdrawing a minimal amount of fluid from the formation. During a second period of time the tool pressure is allowed to equilibrate to formation pressure. When pressure equilibrium is established, formation fluid pressure is set equal to tool pressure. A preferred embodiment includes terminating expanding the volume of the cavity on detecting a break in the mud cake seal. An associated formation pressure tester tool includes an elongated body; a probe defining a formation fluid inflow aperture, an electromechanical assembly defining a variable-volume cavity, a pretest flow line coupling the aperture to the cavity, a pressure sensor coupled to the cavity; and downhole electronic means for controlling the expansion of the volume of the cavity.

摘要翻译： 用于确定围绕井壁的地层中的地层流体压力的方法使用连接到可变体积腔的井下探针。 探头被驱动与钻孔壁的形成接触。 该方法包括在第一时间段内膨胀空腔的体积，以通过从地层中抽取最少量的流体来建立工具流体和地层流体之间的流体连通。 在第二时间段期间，允许工具压力平衡到地层压力。 当建立压力平衡时，地层流体压力设定为等于工具压力。 优选实施例包括在检测到泥饼密封件中的断裂时终止膨胀空腔的体积。 相关联的地层压力测试仪工具包括细长体; 限定地层流体流入孔的探针，限定可变体积腔的机电组件，将孔耦合到空腔的预测流线，耦合到空腔的压力传感器; 以及井下电子装置，用于控制空腔体积的膨胀。

公开(公告)号：US07178392B2

公开(公告)日：2007-02-20

申请号：US10644284

申请日：2003-08-20

申请人： Brindesh Dhruva ,  Elizabeth B. Dussan, V. ,  Aaron Jacobson ,  Jagdish Shah ,  Stephane Pierre ,  Fredrick A. Jenet ,  Michael G. Supp ,  Jennifer Trittschuh

发明人： Brindesh Dhruva ,  Elizabeth B. Dussan, V. ,  Aaron Jacobson ,  Jagdish Shah ,  Stephane Pierre ,  Fredrick A. Jenet ,  Michael G. Supp ,  Jennifer Trittschuh

IPC分类号： E21B47/06

CPC分类号： E21B49/10 ,  E21B49/008

摘要： A method for determining formation fluid pressure in earth formation surrounding a borehole wall uses a downhole probe coupled to a variable-volume cavity. The probe is driven into contact with formation at the borehole wall. The method includes expanding the volume of the cavity during a first period of time to establish fluid communication between tool fluid and formation fluid, by withdrawing a minimal amount of fluid from the formation. During a second period of time the tool pressure is allowed to equilibrate to formation pressure. When pressure equilibrium is established, formation fluid pressure is set equal to tool pressure. A preferred embodiment includes terminating expanding the volume of the cavity on detecting a break in the mud cake seal. An associated formation pressure tester tool includes an elongated body; a probe defining a formation fluid inflow aperture, an electromechanical assembly defining a variable-volume cavity, a pretest flow line coupling the aperture to the cavity, a pressure sensor coupled to the cavity; and downhole electronic means for controlling the expansion of the volume of the cavity.

摘要翻译： 用于确定围绕井壁的地层中的地层流体压力的方法使用连接到可变体积腔的井下探针。 探头被驱动与钻孔壁的形成接触。 该方法包括在第一时间段内膨胀空腔的体积，以通过从地层中抽取最少量的流体来建立工具流体和地层流体之间的流体连通。 在第二时间段期间，允许工具压力平衡到地层压力。 当建立压力平衡时，地层流体压力设定为等于工具压力。 优选实施例包括在检测到泥饼密封件中的断裂时终止膨胀空腔的体积。 相关联的地层压力测试仪工具包括细长体; 限定地层流体流入孔的探针，限定可变体积腔的机电组件，将孔耦合到空腔的预测流线，耦合到空腔的压力传感器; 以及井下电子装置，用于控制空腔体积的膨胀。

公开(公告)号：US07703318B2

公开(公告)日：2010-04-27

申请号：US10543426

申请日：2004-01-19

申请人： Aaron Jacobson ,  Stéphane Briquet

发明人： Aaron Jacobson ,  Stéphane Briquet

IPC分类号： E21B47/06

CPC分类号： E21B49/10

摘要： A formation tester for determining the formation pressure of a subsurface formation traversed by a wellbore comprises of:—an elongate tester body;—a support plate (3) that is extendible outwardly from the surface of the formation tester body, said support plate carrying probe means (5) to establish a passageway between the inside of said formation tester body and said formation, and a sealing pad (6) connected to said probe means to isolate said passage way between the inside of said formation tester body and said formation;—anchoring means (7) to settle said tester body at a level within the wellbore. The elongate tester body comprises an eccentric portion (2) wherein said support plate is mounted such that a determined standoff is maintained between said elongate tester body and the wall of the wellbore when said tester body is settled at a level in the wellbore.

摘要翻译： 用于确定由井筒穿过的地下地层的地层压力的地层测试器包括： - 细长的测试器体; - 从地层测试器主体的表面向外延伸的支撑板（3），所述支撑板承载探针 用于在所述地层测试器主体的内部和所述地层之间建立通道的装置（5）以及与所述探测装置连接的密封垫（6），以隔离所述地层测试器本体内部和所述地层之间的所述通道; 锚固装置（7）将所述测试器主体在所述井筒内的水平面上沉降。 细长测试器主体包括偏心部分（2），其中所述支撑板被安装成使得当所述测试器主体在所述井眼中的水平面上定位时，在所述细长测试器主体和所述井眼的壁之间保持确定的间隙。

公开(公告)号：US20060150726A1

公开(公告)日：2006-07-13

申请号：US10543426

申请日：2004-01-19

申请人： Aaron Jacobson ,  Stephane Briquet

发明人： Aaron Jacobson ,  Stephane Briquet

IPC分类号： E21B49/08

CPC分类号： E21B49/10

摘要： A formation tester for determining the formation pressure of a subsurface formation traversed by a wellbore comprises of:—an elongate tester body;—a support plate (3) that is extendible outwardly from the surface of the formation tester body, said support plate carrying probe means (5) to establish a passageway between the inside of said formation tester body and said formation, and a sealing pad (6) connected to said probe means to isolate said passage way between the inside of said formation tester body and said formation;—anchoring means (7) to settle said tester body at a level within the wellbore. The elongate tester body comprises an eccentric portion (2) wherein said support plate is mounted such that a determined standoff is maintained between said elongate tester body and the wall of the wellbore when said tester body is settled at a level in the wellbore.

摘要翻译： 用于确定由井筒穿过的地下地层的地层压力的地层测试器包括： - 细长的测试器体; - 从地层测试器主体的表面向外延伸的支撑板（3），所述支撑板承载探针 用于在所述地层测试器主体的内部和所述地层之间建立通道的装置（5）以及与所述探测装置连接的密封垫（6），以隔离所述地层测试器本体内部和所述地层之间的所述通道; 锚固装置（7）将所述测试器主体在所述井筒内的水平面上沉降。 细长测试器主体包括偏心部分（2），其中所述支撑板被安装成使得当所述测试器主体在所述井眼中的水平面上定位时，在所述细长测试器主体和所述井眼的壁之间保持确定的间隙。

公开(公告)号：US08535026B2

公开(公告)日：2013-09-17

申请号：US12827536

申请日：2010-06-30

申请人： Kuo-Chiang Chen ,  Aaron Jacobson ,  Nathaniel Wicks ,  Murat Ocalan

发明人： Kuo-Chiang Chen ,  Aaron Jacobson ,  Nathaniel Wicks ,  Murat Ocalan

IPC分类号： F04B41/06

CPC分类号： F04B23/028

摘要： A mechanism for moving elements in a fluid filled housing using a pump with the element to be moved attached rigidly to the pump or to a port assembly connected to the pump. The pump assembly or port assembly moves as a result of differential pressure created between a first and a second chamber separated from each other by the pump assembly or port assembly. Movement of the fluid in one direction increases or decreases pressure, the pressure change resulting in a net force in one direction or the other.

摘要翻译： 一种用于使用泵移动流体填充壳体中的元件的机构，其中要移动的元件刚性地附接到泵或连接到泵的端口组件。 泵组件或端口组件由于通过泵组件或端口组件彼此分离的第一和第二室之间产生的压差而移动。 流体在一个方向上的运动增加或减小压力，压力变化导致在一个方向或另一个方向上的净力。

公开(公告)号：US20120003111A1

公开(公告)日：2012-01-05

申请号：US12827536

申请日：2010-06-30

申请人： Kuo-Chiang Chen ,  Aaron Jacobson ,  Nathaniel Wicks ,  Murat Ocalan

发明人： Kuo-Chiang Chen ,  Aaron Jacobson ,  Nathaniel Wicks ,  Murat Ocalan

IPC分类号： F04B41/06

CPC分类号： F04B23/028

摘要： A mechanism for moving elements in a fluid filled housing a pump with the element to be moved attached rigidly to the pump or to a port assembly connected to the pump. The pump assembly or port assembly moves as a result of differential pressure created between a first and a second chamber separated from each other by the pump assembly or port assembly. Movement of the fluid in one direction increases or decreases pressure, the pressure change resulting in a net force in one direction or the other.

摘要翻译： 用于在流体填充的壳体中移动元件的机构，泵具有要移动的元件刚性地附接到泵或连接到泵的端口组件。 泵组件或端口组件由于通过泵组件或端口组件彼此分离的第一和第二室之间产生的压差而移动。 流体在一个方向上的运动增加或减小压力，压力变化导致在一个方向或另一个方向上的净力。