Southwest Petroleum University

Haohan Well Completion & Logging Science and Technology Limited Company

Yingfeng Meng

Gao Li

Yijian Chen

Xingyu Chen

Hongtao Li

Lunping Zhang

Yang Wang

Na Wei

Rui Li

Yi Feng

Kejing Wang

Shunhui Yang

A device for preventing abrupt blockage in a blooie line of gas drilling includes a sand-storing tank body, which is connected to a rotating blowout preventer through a guiding tube, and a guiding three-way joint is set between the guiding tube and the sand-storing tank body and connected to the blooie line by a vertical guiding tube; the sand-storing tank body is connected to the blooie line by means of a gas discharge tube; a flap plate assembly is arranged at the position fronting straight onto the guiding three-way joint inside the sand-storing tank body, and configured to control the rock particles in the guiding tube to enter the sand-storing tank body, preventing blockage in the blooie line.

Device for preventing abrupt blockage in blooie line of gas drilling

A pressure pulse communication system and method during gas drilling are provided. The system includes a downhole solenoid valve module and a sensor module, where the downhole solenoid valve module includes a valve body, a gas inlet, a piston micro-hole, a moving piston, a piston return spring, a piston cylinder, a gas outlet, a piston pressure relief hole, a solenoid valve spring, a solenoid valve, a battery, a pressure balancer, and a rubber seal. The pressure pulse communication system and method generate pressure pulses by changing the internal pressure of a drill pipe, such that a surface pressure sensor continuously receives the pressure pulses, thereby achieving the purpose of acquiring downhole temperature, pressure, and well inclination angle data.

Pressure pulse communication system and method during gas drilling

A mineshaft-stratum fracture coupled flowing simulation experiment device includes a simulated mineshaft flowing system, a simulated stratum system, a simulated fracture system and a data acquisition system. The simulated mineshaft flowing system includes simulated mineshaft, simulated drilling rod, drilling fluid storage tank, stirring motor, and drilling fluid screw pump. The simulated drilling rod is located in center of the simulated mineshaft. The stirring motor is provided in the drilling fluid storage tank. The drilling fluid screw pump is connected to an inlet end of the simulated drilling rod through the drilling fluid storage tank. The simulated stratum system includes simulated stratum, clean water storage tank, separation tank, gas storage tank, gas air-compressor, and clean water screw pump. The gas storage tank is connected to the gas air-compressor and is connected to the simulated stratum through a gas pressure regulating valve.

Mineshaft-stratum fracture coupled flowing simulation experiment device and method

A logging-while-drilling optical fiber communication device includes a rotary wireless transceiver module fixed on a protective connector; an active antenna of the rotary transceiver is placed in the first drill pipe by drilling hole through the protective connector; an optical fiber communication drawworks is located at the top of a second drill pipe, the optical fiber is downwardly released into other under-well drill pipes, the bottom of the optical fiber is connected with the well-bottom wireless receiving module; the lowest part of the drill pipe are provided with a drilling data acquisition device and a well-bottom wireless transmitting module. In the present invention, the optical fiber cable is used as transmission medium, by the means of modulating information data obtained by well logging into optical wave, and transmitting to the optical communication link, high-speed bi-directional transmission of well logging information can be realized.

Logging-while-drilling optical fiber communication device

Growing community of inventors

Chengdu, China

Yingfeng Meng