Southwest Petroleum University

Other

Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang)

Guangjie Yuan

Guorong Wang

Yang Tang

Jinzhong Wang

Jinhai Zhao

Yufa He

Zeliang Li

Xiang Gao

Qingyou Liu

Qingping Li

Xushen Li

Jie Wu

Peng Zhao

Xin Jing

Haoyu Xiong

Meng Li

Yuan Wang

Wen Yang

Rutao Ma

Mingbo Wang

Li Gu

Xiaoyu Fang

Chenglin Wang

Liming Fan

Chuanhua Ma

Yuan Huang

Shouhong Ji

Hao Hou

Zhidong Zhang

Guohai Yuan

Minghai Zhou

Na Xie

Fu Deng

A fully electrically controlled intelligent subsurface safety valve is provided, including an upper joint, a lower joint, a magnetic switch, an upper electromagnetic suction module, a central flow pipe, a magnetic piston ring, a lower electromagnetic suction module, a rebound flap valve mechanism, a displacement sensor, a temperature and pressure sensor, a flow sensor, and a power communication composite cable connector. With the magnetic assisted reset of the two electromagnetic suction modules, the safety valve closes more quickly in emergency situations, improving the reliability of the safety valve. By using a magnetic excitation switch, the safety valve can be quickly opened and closed, and the open or close state can be maintained independently, saving energy consumption in the control system. The present disclosure can better meet the needs of onshore and offshore oil and gas production operations and gas storage operations.

Fully electrically controlled intelligent subsurface safety valve

A cavity creation tool by crushing with multi-stage controllable water jet, it is used in natural gas hydrate development and mainly consists of an inner tube upper joint, an inner tube lower joint, an intermediate sleeve, an inner structure consisting of a coaxial throttle push rod, an outer layer sleeve, an outer layer structure consisting of a supporting ring, a jet head mounted to the intermediate sleeve and threading the outer layer sleeve, and a jet crushing structure consisting of a single-stage telescopic jet head and a two-stage telescopic jet head.

Cavity creation tool by crushing with multi-stage controllable water jet for natural gas hydrate development

Disclosed is an oil extraction and gas production method capable of in-situ sand control and removal by downhole hydraulic lift achieved by downhole oil extraction and gas production system and ground oil extraction and gas production system. The downhole systems mainly comprises a double-layer tube, a double-layer tube reducing joint, a double-layer tube packer, a hydrodynamic turbine motor, a sludge screw pump, a soil-sand separator and a negative pressure absorber; the ground system comprises a power fluid pressurizing module and a mix fluid treatment module. The present application lowers the difficulty of pumping and lifting downhole formation fluid; achieves downhole and in-situ sand control and sand discharge, alleviates the blockage and erosion of sand particles on equipments and reduces energy consumption; decreases the production cost and improves the operation efficiency, therefore is suitable for oil extraction and gas production in high sand content wells.

Oil extraction and gas production method capable of in-situ sand control and removal by downhole hydraulic lift

The invention discloses an intelligent plugging robot and method thereof for rerouting, maintaining and repairing long-distance pipelines. The intelligent plugging robot includes a through-flow governor, a flow-blocking mechanism and a telescopic mechanism, wherein the through-flow governor and the flow-blocking mechanism are symmetrically distributed on both sides of the device. The invention can realize remote, fast, safe and accurate plugging during maintaining and repairing the long-distance pipeline, wherein the telescopic mechanism cooperates with the flow-blocking mechanism to move autonomously in the pipe to achieve precise positioning, the through-flow governor can not only adjust the plugging robot but also ensure the cleaning of the pipe wall, make it stable contact with the signal transceiver, and realize the stable communication between the robot in the pipe and the remote monitoring machine.

Intelligent plugging robot and method for long-distance pipeline rerouting, maintaining and repairing construction

An in situ exploitation-separation-backfilling integration apparatus for natural gas hydrates is disclosed, consisting of a cyclonic suction device for coarse fraction, a jet flow device for sand discharge and a spiral cyclone device for fine fraction. The cyclonic suction device for coarse fraction is provided with a vortex trough and a cyclonic auxiliary flow channel; the jet flow device for sand discharge mainly consists of a sand discharge sliding sleeve, a sand discharge jet cylinder and a spring, wherein the sand discharge sliding sleeve can control the spraying out of hydraulic fluid and it is provided with a sand discharge butting head; inside the spiral cyclone device for fine fraction is a tapered structure and its upper portion is provided with a centering bracket.

In situ exploitation-separation-backfilling integration apparatus used for natural gas hydrates

Growing community of inventors

Chengdu, China

Guangjie Yuan