Cnpc Engineering Technology R&d Company Limited

China National Petroleum Corporation

Binggui Xu

Tao Jia

Mingjie Lv

Hongwei Yin

Huijuan Guo

Zhitong Liu

Jianli Wang

Yongliang Yu

Wanjun Li

Quanli Zhang

Yingjie Zhu

Gang Wang

Qiang Li

Chen Wang

Guodong Zhan

Gang Chen

Xue Wang

Jianhua Guo

Peng Kang

Fei Han

Fei He

Fuxiang Hou

Guojun Liu

Zhijian Hu

Shaohua Zhou

Mingmin He

Yi Tian

Aiguo Wang

Depei Shi

Disclosed are an expansion tool assembly, comprising: an expandable tubular; a guide shoe partially inserted into and connected to the lower end of the expandable tubular; a sealing sleeve arranged in the expandable tubular and connected to the upper end of the guide shoe; an expansion assembly comprising an expansion cone and expansion seat disposed inside the expandable tubular, wherein the lower end of the expansion seat is connected with hooks, which can be rested on the upper end of the sealing sleeve; an upper joint that is connected to the upper end of the expansion seat and can be connected to a drill string. A force transfer path can be established via connection between the expansion seat and sealing sleeve, so that expandable tubular weight is borne on the drill string. Unintentional expansion of the expandable tubular, caused by interaction between expandable tubular and expansion cone, can be avoided.

Expansion tool assembly for expandable tubular

The present invention discloses an expandable liner hanger system comprising a central pipe and an expandable pipe, with an expansion cone provided therebetween the central pipe and expandable pipe in a way that the expansion cone is movable along the central pipe, so that the expandable pipe is expanded; wherein, the expansion cone comprises an expansion cone seat move along the central pipe, and an expansion cone sleeve fitted over the expansion cone seat, the connection between the expansion cone seat and the expansion cone sleeve is configured in a way that the expansion cone sleeve can move upward together with the expansion cone seat along the central pipe so that the expandable pipe is expanded, and the central pipe can drive the expansion cone seat to disengage from the expansion cone sleeve.

Expandable liner hanger

A mechanical and hydraulic dual-effect expansion device for well drilling with expandable tubular technology includes an anchor having a lower end connected to an upper end of an insertion connection tube via a coupling, a hydraulic cylinder assembly comprising a hydraulic cylinder and a piston tube movably disposed within an inner cavity of the hydraulic cylinder, and a variable-diameter expansion cone assembly comprising a sealing cone portion and a variable-diameter expansion cone portion, wherein the sealing cone portion has an upper end connected to a lower end of the piston tube and a lower end connected to an upper end of the variable-diameter expansion cone portion. The mechanical and hydraulic dual-effect expansion device can facilitate completion of construction operations of an expandable tubular in a casing and an openhole system.

Mechanical and hydraulic dual-effect expansion device for well drilling with expandable tubular technology

Growing community of inventors

Beijing, China

Binggui Xu