公开(公告)号：US3851706A

公开(公告)日：1974-12-03

申请号：US40676473

申请日：1973-10-15

Applicant: DRESSER IND

Inventor： ELLIS G

IPC: E21B23/06 ,  E21B33/129 ,  E21B33/1295 ,  E21B23/00

CPC classification number: E21B33/1292 ,  E21B23/06 ,  E21B33/1295

Abstract: A well packer to be set in a casing has a cylindrical mandrel with a resilient packer unit encircling the mandrel which is radially expandable into contact with the casing when longitudinally compressed. A drive cylinder is secured to the mandrel below the packer unit to support the unit. A lower cylinder encircles the mandrel to bear against the top of the packer unit and is freely movable longitudinally on the mandrel. A hollow cylindrical bidirectional grip has beveled generally parallel ends with toothed shoulders adjacent to opposite extremities of the beveled ends. The grip is mounted on the mandrel and bears on the lower cylinder as to be tilted into engagement with the casing but normally is resiliently biased toward an untilted attitude. An upper cylinder encircles the mandrel and is slidably positioned thereon above the grip. Forces acting upward on the mandrel and downward on the upper cylinder apply a setting force to the grip which force is transmitted through the packer unit whereby the grip tilts toward and becomes wedged between opposite sides of the casing as the packer unit is forced into casing contact to seal the annulus between the mandrel and the casing.

公开(公告)号：US3818987A

公开(公告)日：1974-06-25

申请号：US30769672

申请日：1972-11-17

Applicant: DRESSER IND

Inventor： ELLIS G

IPC: E21B33/122 ,  E21B23/06 ,  E21B33/128 ,  E21B33/129 ,  E21B33/1295

CPC classification number: E21B33/1292 ,  E21B23/06 ,  E21B33/1295

Abstract: A well packer to be set in a casing has a cylindrical mandrel with a resilient packer unit encircling the mandrel which is radially expandable into contact with the casing when longitudinally compressed. A drive cylinder is secured to the mandrel below the packer unit to support the unit. A lower cylinder encircles the mandrel to bear against the top of the packer unit and is freely movable longitudinally on the mandrel. A hollow cylindrical bidirectional grip has beveled generally parallel ends with toothed shoulders adjacent to opposite extremities of the beveled ends. The grip is mounted on the mandrel and bears on the lower cylinder as to be tilted into engagement with the casing but normally is resiliently biased toward an untilted attitude. An upper cylinder encircles the mandrel and is slidably positioned thereon above the grip. Forces acting upward on the mandrel and downward on the upper cylinder apply a setting force to the grip which force is transmitted through the packer unit whereby the grip tilts toward and becomes wedged between opposite sides of the casing as the packer unit is forced into casing contact to seal the annulus between the mandrel and the casing.

公开(公告)号：US3851708A

公开(公告)日：1974-12-03

申请号：US40676373

申请日：1973-10-15

Applicant: DRESSER IND

Inventor： ELLIS G

IPC: E21B23/06 ,  E21B33/129 ,  E21B33/1295

CPC classification number: E21B33/1292 ,  E21B23/06 ,  E21B33/1295

Abstract: A well packer to be set in a casing has a cylindrical mandrel with a resilient packer unit encircling the mandrel which is radially expandable into contact with the casing when longitudinally compressed. A drive cylinder is secured to the mandrel below the packer unit to support the unit. A lower cylinder encircles the mandrel to bear against the top of the packer unit and is freely movable longitudinally on the mandrel. A hollow cylindrical bidirectional grip has beveled generally parallel ends with toothed shoulders adjacent to opposite extremities of the beveled ends. The grip is mounted on the mandrel and bears on the lower cylinder as to be tilted into engagement with the casing but normally is resiliently biased toward an untilted attitude. An upper cylinder encircles the mandrel and is slidably positioned thereon above the grip. Forces acting upward on the mandrel and downward on the upper cylinder apply a setting force to the grip which force is transmitted through the packer unit whereby the grip tilts toward and becomes wedged between opposite sides of the casing as the packer unit is forced into casing contact to seal the annulus between the mandrel and the casing.

Abstract translation: 要设置在套管中的打井器具有圆柱形心轴，其具有围绕心轴的弹性封隔器单元，当纵向压缩时，径向可膨胀与壳体接触。 驱动气缸在封隔器单元下方固定到心轴上以支撑该单元。 下气缸环绕心轴以抵靠封隔器单元的顶部并且可在心轴上纵向自由移动。 中空圆柱形双向把手具有大致平行的端部，其齿形肩部相邻于倾斜端部的相对端。 把手被安装在心轴上并且承载在下部圆柱体上，以便倾斜成与壳体接合，但是通常被弹性地偏向朝向的姿态。 上气缸环绕心轴并且可滑动地定位在手柄上方。 在心轴上向上作用并向上作用的力向把手施加一定的力，该力通过封隔器单元传递，从而当封隔器单元被迫进入套管接触时，把手朝着壳体的相对侧倾斜并楔入 以密封心轴和壳体之间的环。

公开(公告)号：US3804164A

公开(公告)日：1974-04-16

申请号：US34915973

申请日：1973-04-09

Applicant: DRESSER IND

Inventor： ELLIS G

IPC: E21B33/129 ,  E21B33/1295 ,  E21B23/04

CPC classification number: E21B33/1291 ,  E21B33/12955

Abstract: A first unitary slip located beneath the packing element is set from the surface by the operator by applying the weight of the tubing. Whenever the pressure beneath the packer exceeds the pressure above the packer which would normally cause the packer assembly to be moved upwardly within the casing, the excess pressure is used to drive a setting piston downwardly against a spring, the downward movement causing a setting sleeve to cause an upper unitary slip to rotate into contact with the casing and act as an anchor against upward movement of the tool. When it is desired to retrieve the overall assembly, pulling up on the tubing string causes the pressure to be equalized across the packer assembly and the tool can be removed from the borehole. The spring against which the setting piston works enables the apparatus to be run through fluid while moving through the borehole without a premature setting of the anchor assembly.

Abstract translation: 通过施加管道的重量，由操作者从表面设置位于包装元件下方的第一单一滑动。 每当封隔器下方的压力超过封隔器上方的压力时，这通常会导致封隔器组件在壳体内向上移动，则过大的压力用于将设置活塞向下驱动抵靠弹簧，向下运动导致固定套筒 导致上部单一滑动旋转以与壳体接触并用作防止工具向上运动的锚固件。 当需要检索整个组件时，向上拉油管柱会导致压力在整个封隔器组件上相等，并且该工具可以从钻孔中移除。 设置活塞工作的弹簧使得装置能够在移动通过钻孔的同时穿过流体而不会使锚固组件过早地固定。