China Petroleum Chemical Corporation

Sinopec Petroleum Engineering Technology Service Co., Ltd.

Geosteering & Logging Research Institute, Sinopec Matrix Corporation

Sinopec Matrix Corporation

Sinopec Shengli Petroleum Engineering Co., Ltd

Qingming Ma

Ningning Yang

Hongbing Xiao

Shan Li

Wei Chen

Yufeng Li

Haiquan Tang

Nan Lin

Chao Lu

Guangquan Li

Haiyang Du

Shugang Hou

Baizhi Wu

Qinglong Liu

Jieran Zhu

Wenting Liu

A mud pulse generation system based on two-way communication includes a turbine stator having at least two stator openings () each with a preset opening angle; a turbine rotor, having a sidewall provided with at least one wide blade and at least one narrow blade spaced from each other through several openings; a power generation module driven by rotation of the turbine rotor for supplying power; and a master device configured to control relative time when the wide blade or the narrow blade passes through the stator openings by controlling a controllable load of the power generation module based on uplink information, generate an uplink pulse signal with variable time intervals at the stator openings, and monitor and decode three-phase AC voltage signal output by the power generation module to obtain downlink information. This system is able to generate high-frequency pressure fluctuation pulse without requiring external power supply.

Mud pulse generation system based on two-way communication

A steerable drilling device has an outer tube extending along a longitudinal axis; a drill bit joint inserted into said outer tube, a lower end of said drill bit joint extending out of a lower end of said outer tube for connection to a drill bit; a joint drive mechanism, provided in said outer tube and configured to drive said drill bit joint to swing relative to the longitudinal axis; and a lower connection mechanism. The lower connection mechanism has a connection body connected to said joint drive mechanism in such a manner that said joint drive mechanism is non-rotatable with respect to said connection body, a first centralizer arranged between said connection body and said outer tube, a circuit system arranged in said connection body and configured to provide an electrical signal to said joint driving mechanism, and an attitude sensor arranged in said connection body.

Steerable drilling device

Growing community of inventors

Shandong, China

Qingming Ma