Casing windowing method and tool using coiled tubing
US-10450801-B2 · Oct 22, 2019 · US
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China Nat Petroleum Corp patents in 2019
China Nat Petroleum Corp was listed as an assignee on 8 patent publications in 2019.
| Metric | Value |
|---|---|
| Company | China Nat Petroleum Corp |
| Year | 2019 |
| Patents | 8 |
Patents
Representative publications for China Nat Petroleum Corp in 2019.
Monitoring system for use in seismic instrument arrangement in petroleum exploration
US-10436920-B2 · Oct 8, 2019 · US
Automatic inspection and monitoring method based on time domain slotting control
US-10409251-B2 · Sep 10, 2019 · US
High temperature resistant portland cement slurry and production method thereof
US-2019241792-A1 · Aug 8, 2019 · US
Method and system for positioning seismic source in microseism monitoring
US-2019162867-A1 · May 30, 2019 · US
Top CPC classifications
Most common classification codes for China Nat Petroleum Corp in 2019.
| CPC | Patents |
|---|---|
| E21B17/042 | 2 |
| G01V1/30 | 2 |
| G01V2200/14 | 2 |
| C04B14/043 | 1 |
| C04B14/066 | 1 |
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