Device and method for rapidly regulating downhole pressure after kick in deepwater shallow open-circuit drilling
US-12480371-B1 · Nov 25, 2025 · US
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Sun Baojiang patents
Sun Baojiang is listed as an inventor on 41 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Sun Baojiang |
| Total patents | 41 |
| First publication | Mar 14, 2017 |
| Latest publication | Nov 25, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Method for evaluation of co2 plume distribution pattern based on image spatial moment theory
US-2025349107-A1 · Nov 13, 2025 · US
Microscopic and macroscopic evaluation method for dual-effect hydrate inhibitor
US-12429415-B2 · Sep 30, 2025 · US
Well-killing system for ultra-deep well drilling with co-existence of overflow and lost circulation and operation method thereof
US-12331602-B2 · Jun 17, 2025 · US
Well-killing system for ultra-deep well drilling with co-existence of overflow and lost circulation and operation method thereof
US-2025116163-A1 · Apr 10, 2025 · US
Microscopic and macroscopic evaluation method for dual-effect hydrate inhibitor
US-2024385103-A1 · Nov 21, 2024 · US
Device and method for early monitoring of gas intrusion based on pressure wave propagation
US-12131107-B2 · Oct 29, 2024 · US
Experimental device and method for co-existence of overflow and lost circulation in fractured formation during drilling of deviated well
US-12078054-B2 · Sep 3, 2024 · US
Device and method for simulating gas intrusion and bullheading in wellbore under different inclinations
US-12071849-B2 · Aug 27, 2024 · US
Device and method for early monitoring of gas intrusion based on pressure wave propagation
US-2024242011-A1 · Jul 18, 2024 · US
Recent patents
Latest publications not already listed above.
Device and method for simulating gas intrusion and bullheading in wellbore under different inclinations
US-2024240557-A1 · Jul 18, 2024 · US
Preparation method for and application of modified siloxane-based supercritical carbon dioxide thickener
US-12030994-B2 · Jul 9, 2024 · US
Experimental device and method for co-existence of overflow and lost circulation in fractured formation during drilling of deviated well
US-2024209727-A1 · Jun 27, 2024 · US
Pressure compensation device with accumulator group for controlled pressure drilling
US-12000222-B2 · Jun 4, 2024 · US
Apparatus for preventing and controlling secondary generation of hydrates in wellbore during depressurization exploitation of offshore natural gas hydrates and prevention and control method
US-12000245-B2 · Jun 4, 2024 · US
High-efficiency yield-increasing exploitation method for natural gas hydrates
US-11952869-B1 · Apr 9, 2024 · US
High-efficiency yield-increasing exploitation method for natural gas hydrates
US-2024093579-A1 · Mar 21, 2024 · US
Apparatus for preventing and controlling secondary generation of hydrates in wellbore during depressurization exploitation of offshore natural gas hydrates and prevention and control method
US-2024084675-A1 · Mar 14, 2024 · US
Preparation method for and application of modified siloxane-based supercritical carbon dioxide thickener
US-2023391959-A1 · Dec 7, 2023 · US
Drilling well underground kick processing method and device with self-feedback adjustment
US-11773709-B1 · Oct 3, 2023 · US
Drilling well underground kick processing method and device with self-feedback adjustment
US-2023287781-A1 · Sep 14, 2023 · US
Pressure compensation device with accumulator group for controlled pressure drilling
US-2023228162-A1 · Jul 20, 2023 · US
Well structure for natural gas hydrate production
US-11401785-B2 · Aug 2, 2022 · US
Method and equipment for optimizing hydraulic parameters of deepwater managed pressure drilling in real time
US-11203922-B1 · Dec 21, 2021 · US
Active control method and control device for wellbore pressure in the open-cycle drilling of marine natural gas hydrates
US-11002126-B2 · May 11, 2021 · US
Active control method and control device for wellbore pressure in the open-cycle drilling of marine natural gas hydrates
US-2021087918-A1 · Mar 25, 2021 · US
Well killing method and device for a fractured formation without safety pressure window by five-step bullheading
US-10408014-B1 · Sep 10, 2019 · US
Control method and control device for drilling operations
US-10337267-B1 · Jul 2, 2019 · US
Anti-settling Apparatus and Method and Apparatus for Checking the Same, and Apparatus for Preventing Settlement of Well
US-2019178046-A1 · Jun 13, 2019 · US
Homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and method thereof
US-10267129-B1 · Apr 23, 2019 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ China Petroleum East China | 40 |
| Cnpc Bohai Driling Engineering Company Ltd | 2 |
| China Nat Petroleum Corp | 2 |
| Cimc Offshore Engineering Res Institute Co Ltd | 2 |
| Shandong Pengbo Safety And Environmental Prot Service Co Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B47/06 | 16 |
| E21B21/08 | 16 |
| E21B2200/20 | 10 |
| E21B41/0099 | 8 |
| E21B43/01 | 8 |