Inventor

SUN BAOJIANG

CN25 patents

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

SUN BAOJIANG

UNIV CHINA PETROLEUM EAST CHINA

Apparatus and method for monitoring hydrate decomposition area under different drilling and production processes

Device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities

Method and equipment for optimizing hydraulic parameters of deepwater managed pressure drilling in real time

Experimental apparatus for studying gas invasion and migration mechanism in oil and gas wellbores

Control method and control device for drilling operations

Subsea wellhead pressure indicating and automatic adjusting device for deep-water dual-gradient drilling

Foam stabilizer composition, foamed cement slurry and additive composition thereof

Kick information identification apparatus and method assisted for wellbore pressure control during horizontal drilling

Homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and method thereof

Wellbore pressure control system and method for offshore well cementation stages

Surface layer conductor running tool for deep-water well drilling

Well killing method and device for a fractured formation without safety pressure window by five-step bullheading

Preparation method for and application of modified siloxane-based supercritical carbon dioxide thickener

Well structure for natural gas hydrate production

Active control method and control device for wellbore pressure in the open-cycle drilling of marine natural gas hydrates

Experimental device and method for co-existence of overflow and lost circulation in fractured formation during drilling of deviated well

Device and method for rapidly regulating downhole pressure after kick in deepwater shallow open-circuit drilling

Well-killing system for ultra-deep well drilling with co-existence of overflow and lost circulation and operation method thereof

Device and method for simulating gas intrusion and bullheading in wellbore under different inclinations

High-efficiency yield-increasing exploitation method for natural gas hydrates

Drilling well underground kick processing method and device with self-feedback adjustment

Apparatus for preventing and controlling secondary generation of hydrates in wellbore during depressurization exploitation of offshore natural gas hydrates and prevention and control method

Device and method for early monitoring of gas intrusion based on pressure wave propagation

Microscopic and macroscopic evaluation method for dual-effect hydrate inhibitor

CNPC BOHAI DRILING ENGINEERING COMPANY LTD

Pressure compensation device with accumulator group for controlled pressure drilling