公开(公告)号：US20160290093A1

公开(公告)日：2016-10-06

申请号：US14954525

申请日：2015-11-30

Applicant: BAKER HUGHES INCORPORATED

Inventor： James C. Doane ,  Jason M. Harper ,  Yingqing Xu ,  Barbara A. Pratt ,  Gary L. Anderson ,  David S. Bishop ,  Antonio C. Ruffo ,  Robert J. Taylor ,  Anton David ,  David K. Acquaye

IPC: E21B33/128 ,  E21B33/129

CPC classification number: E21B33/128 ,  E21B33/129 ,  E21B33/1291

Abstract: A compression set sealing element preferably 85A-95A TDI-Ester Polyurethane is compressed axially and retained against extrusion by CEM anti-extrusion rings. The compressed state of the sealing element is locked in by a degradable lock ring assembly. The mandrel is secured to an upper end of a slip cone and a breakable slip ring is secured by a wireline setting tool until the set position is reached. The slip ring breaks into segments that are pulled up the slip cone as the setting tool pushes on a sleeve to axially compress the sealing element and lock in the set. The sealing element is retained against extrusion by CEM anti-extrusion rings. When the setting tool is removed a ball seat is exposed for delivery of a ball to build pressure into the formation for fracturing. The entirety of the plug then disintegrates from well fluid exposure.

公开(公告)号：US20160290092A1

公开(公告)日：2016-10-06

申请号：US14677415

申请日：2015-04-02

Applicant: BAKER HUGHES INCORPORATED

Inventor： James C. Doane ,  Jason M. Harper ,  Yingqing Xu ,  Barbara A. Pratt ,  Gary L. Anderson ,  David S. Bishop ,  Antonio C. Ruffo ,  Robert J. Taylor ,  David K. Acquaye

IPC: E21B33/128

CPC classification number: E21B33/128

Abstract: A compression set sealing element preferably 85A-95A TDI-Ester Polyurethane is compressed axially and retained against extrusion by CEM anti-extrusion rings. The compressed state of the sealing element is locked in by a degradable lock ring assembly. The mandrel is secured to an upper end of a slip cone and a breakable slip ring is secured by a wireline setting tool until the set position is reached. The slip ring breaks into segments that are pulled up the slip cone as the setting tool pushes on a sleeve to axially compress the sealing element and lock in the set. The sealing element is retained against extrusion by CEM anti-extrusion rings. When the setting tool is removed a ball seat is exposed for delivery of a ball to build pressure into the formation for fracturing. The entirety of the plug then disintegrates from well fluid exposure.

Abstract translation: 压缩永久密封元件优选85A-95A TDI-Ester聚氨酯被轴向压缩并保持抵抗CEM抗挤出环挤压。 密封元件的压缩状态由可降解的锁环组件锁定。 心轴被固定到滑动锥体的上端，并且可滑动的滑环通过有线设置工具固定，直到到达设定位置。 当安装工具推动套筒以轴向压缩密封元件并锁定在组件中时，滑环突破成滑动锥体上拉的段。 密封元件通过CEM抗挤压环保持抵抗挤出。 当固定工具被移除时，球座被暴露以输送球以将压力施加到地层中用于压裂。 然后，整个塞子从良好的流体暴露中分解。