公开(公告)号：US4901804A

公开(公告)日：1990-02-20

申请号：US232471

申请日：1988-08-15

申请人： Theodore G. Thometz ,  Charles D. Barron

发明人： Theodore G. Thometz ,  Charles D. Barron

IPC分类号： E21B23/14 ,  E21B47/00 ,  E21B47/01 ,  E21B47/022

CPC分类号： E21B47/00 ,  E21B23/14 ,  E21B47/011 ,  E21B47/022

摘要： An articulated downhole surveying instrument and method for measuring parameters of a wellbore includes one or more laterally flexible coupling sections. The laterally flexible coupling sections are rigid in axial tension and axial compression, and are smaller in cross-section than the surveying instrument housing. A separate housing is used for each component of the surveying instrument, and each component housing is interconnected with the laterally flexible coupling. One or more flexible spacer bars are also provided. The spacer bars and coupling sections enable the assembly to be passed through a short-radius angle wellbore with greatly reduced risk of sticking or hanging up.

摘要翻译： 用于测量井筒参数的铰接式井下测量仪器和方法包括一个或多个横向柔性耦合部分。 横向柔性连接部分在轴向张力和轴向压缩方面是刚性的，并且横截面比测量仪器壳体小。 测量仪器的每个部件都使用单独的外壳，每个部件外壳都与横向柔性联轴器互连。 还提供了一个或多个柔性间隔杆。 间隔杆和联接部分使得组件能够穿过短半径角的井筒，大大降低了粘着或悬挂的风险。

公开(公告)号：US4023630A

公开(公告)日：1977-05-17

申请号：US649037

申请日：1976-01-14

申请人： Gregg S. Perkin ,  Glen Robinson ,  Theodore G. Thometz

发明人： Gregg S. Perkin ,  Glen Robinson ,  Theodore G. Thometz

IPC分类号： E21B31/107 ,  E21B31/113 ,  E21B1/10

CPC分类号： E21B31/1135 ,  E21B31/107

摘要： A well jar has telescoping inner and outer elements having a torque transmitting connection therebetween. An intermediate member is rotatably mounted relative to the telescoping elements and is affixed in a longitudinal direction to one of the telescoping elements. A releasable latch is connected between the intermediate member and one of the telescoping elements. The intermediate member is rotatable relative to the telescoping elements upon a predetermined minimum longitudinal force applied between the telescoping elements. The rotation causes a release of the latch and movement of the telescoping elements to an impact of coacting impact faces on the telescoping elements. An improvement involves a time delay section connected between the intermediate member and at least one of the telescoping elements for restraining such relative rotation for a preselected time interval of application of at least such minimum longitudinal force. In addition the preferred embodiment has the time delay section and the latch located in a common chamber, and the time delay section includes a hydraulic time delay device that makes use of the same fluid as that used for lubricating the latch.

摘要翻译： 井筒具有伸缩的内部和外部元件，其间具有扭矩传递连接。 中间构件相对于伸缩元件可旋转地安装并且沿纵向方向固定到伸缩元件之一。 可释放的闩锁连接在中间构件和伸缩元件中的一个之间。 中间构件可以在伸缩元件之间施加预定的最小纵向力时相对于伸缩元件旋转。 旋转导致闩锁的释放和伸缩元件的移动到伸缩元件上的共同冲击面的冲击。 改进包括连接在中间构件和至少一个伸缩元件之间的延时部分，用于在施加至少这种最小纵向力的预选时间间隔内限制这种相对旋转。 此外，优选实施例具有位于公共室中的时间延迟部分和闩锁，并且延时部分包括使用与用于润滑闩锁的流体相同的流体的液压延时装置。