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
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Gao Yonghai patents
Gao Yonghai is listed as an inventor on 15 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Gao Yonghai |
| Total patents | 15 |
| First publication | Mar 21, 2017 |
| Latest publication | Jun 17, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
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
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 simulating gas intrusion and bullheading in wellbore under different inclinations
US-2024240557-A1 · Jul 18, 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
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
Method and equipment for optimizing hydraulic parameters of deepwater managed pressure drilling in real time
US-11203922-B1 · Dec 21, 2021 · US
Homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and method thereof
US-10267129-B1 · Apr 23, 2019 · US
Recent patents
Latest publications not already listed above.
Surface layer conductor running tool for deep-water well drilling
US-9631450-B2 · Apr 25, 2017 · US
Wellbore pressure control system and method for offshore well cementation stages
US-9631454-B1 · Apr 25, 2017 · US
Apparatus and method for monitoring hydrate decomposition area under different drilling and production processes
US-2017101853-A1 · Apr 13, 2017 · US
Surface layer conductor running tool for deep-water well drilling
US-2017089161-A1 · Mar 30, 2017 · US
Apparatus and method for monitoring hydrate decomposition area under different drilling and production processes
US-9598936-B1 · Mar 21, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ China Petroleum East China | 15 |
| Zhanjiang Branch Of Cnooc China Co Ltd | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B47/06 | 8 |
| E21B2200/20 | 7 |
| E21B21/08 | 7 |
| E21B41/00 | 6 |
| E21B47/10 | 4 |