Inventor

LIU QINGYOU

CN32 patents

⚠️ This page may combine multiple inventors who share the name “LIU QINGYOU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU QINGYOU

UNIV SOUTHWEST PETROLEUM

Double-layer coiled tubing double-gradient drilling system

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

Multi-functional multi-field coupling seepage experiment device and testing method thereof

Dynamic inwardly eccentrically-placed directional drill bit type rotation guidance apparatus

Actively driven spiral pipeline robot

Displacement measuring device and speed measuring method of drilling traction robot

Textured surface of oil and gas equipment and machining method thereof

Experimental device and experimental method for natural gas hydrate solid-state fluidized mining and crushing

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

Omni-directional horizontally orientaed deflecting tool for coiled tubing

Automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate

System and method for pumping lubricant in gas pipeline

Test device for simulating longitudinal-lateral-torsional coupled nonlinear vibration of drill string of deepwater riserless drilling and method therefor

Deepwater drilling condition based marine riser mechanical behavior test simulation system and test method

Downhole automatic connection device and method for oil pipe internal communication cable used for intelligent layered water injection

Mechanics experiment system and method for perforated string in underground perforating blasting of oil-gas well

Device and method for solid-state fluidized mining of natural gas hydrates in shallow seabed

Device and method for solid-state fluidization mining of seabed shallow layer non-diagenetic natural gas hydrates

UNIV CHENGDU TECHNOLOGY

Support mechanism of self-adaptive traction robot for complex wellbore and control method thereof

Downhole explosion robot based on planetary roller screw telescoping and traction method thereof

Pipeline robot capable of steering actively

Coiled tubing drilling robot, robot system and process parameter control method thereof

Wireless remote control method and system for controllable rotary sliding guiding drilling

Dynamic design method for personalized drill bit for complex difficult-to-drill formation

Downhole traction system

Numerical simulation and parameter optimization method for volumetric fracturing of unconventional dual medium reservoir

Grinding robot for inside wall of small diameter pipes

Two-stage reverse-torque bent screw orientation tool

Intelligent switching valve for reservoir reformation and production monitoring and control and construction method therefor

CENTRAL IRON AND STEEL RES INSTITUTE

Method for determining quality level of iron and steel product

SOUTHERN MARINE SCIENCE AND ENG GUANGDONG LABORATORY ZHANJIANG

Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation

LIU QINGYOU

Underground annular blowout preventer and assembly process thereof