China Petroleum Chemical Corporation

Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.

Petroleum Engineering Research Institute, Sinopec

Shidong Ding

Wei Liu

Xiaodan Liu

Haiping Zhang

Yanbin Zang

Lingchao Xuan

Jiachang Wang

Lishuang Wang

Renlong Zhang

Mingguang Sun

Xinghua Tao

Xuepeng Liu

Qichun Wang

Qian Tao

Shiming Zhou

A multiphase particle has a multiphase structure comprising a first phase and a second phase and has an average particle size of 0.1-100 mm. The multiphase particle has a high bulk strength and a good interface binding power with the hardened cement and is particularly suitable for the toughening application of the hardened cement.

Multiphase particle, manufacturing process and use thereof

A speed-enhancing drilling tool includes an upstream drill string (), which has a drive motor and a first driving rod coupled therewith, a downstream drilling bit; and a percussive device connected between the upstream drilling string and the downstream drilling bit. The first driving rod extending axially and the drive motor are configured to drive the first driving rod in rotation. The percussive device has a rotary driving part having an upper end engaged with the first driving rod to rotate together therewith; and a rotary working part having an upper end engaged with a lower end of the rotary driving part and a lower end connected with the downstream drilling bit. The rotary working part can be driven by the rotary driving part to rotate about its axis, and axially movable relative thereto; and a percussion generating part arranged around the rotary working part.

Well drilling acceleration tool

Growing community of inventors

Beijing, China

Shidong Ding