Sinopec Petroleum Engineering Technology Service Co., Ltd.

Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd.

Sinopec Shengli Petroleum Engineering Co., Ltd

Qiang Cao

Yong Chen

Haoyu Sun

Zongqing Li

Chang Wang

Dejing Yang

Huangang Zhu

Ping Xu

Jiancheng Li

Rongrong Song

A double-channel fluid injection apparatus includes a main shaft, a bearing box, and a sealing box. The main shaft includes an outer tube and an inner tube. An internal channel of the inner tube and a vertical through channel constitute a first fluid passageway. The inner tube and the outer tube form an annular gap, and a channel D is radially formed at a lower part of the outer tube and is in communication with the annular gap, thus constituting a second fluid passageway. The bearing box is mounted on a boss of the outer tube. The sealing box includes a sealing cylinder fixedly connected to a lower end of a lower end cap of the bearing box. A channel E in communication with the second fluid passageway is radially formed at a position of the sealing cylinder corresponding to the channel of the outer tube.

Double-channel fluid injection apparatus

Growing community of inventors

Shandong, China

Qiang Cao