High-strength Portland cement slurry for ultra-high temperature cementing, preparation method therefor and application thereof
US-12497331-B2 · Dec 16, 2025 · US
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China Nat Petroleum Corp patents in 2025
China Nat Petroleum Corp was listed as an assignee on 52 patent publications in 2025.
| Metric | Value |
|---|---|
| Company | China Nat Petroleum Corp |
| Year | 2025 |
| Patents | 52 |
Patents
Representative publications for China Nat Petroleum Corp in 2025.
Grout free fiber enhanced composite liner steel tube for ccus and water injection
US-2025367911-A1 · Dec 4, 2025 · US
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
US-2025362215-A1 · Nov 27, 2025 · US
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
US-2025354909-A1 · Nov 20, 2025 · US
Boronized corrosion resistant alloy component for high pressure and high temperature oilfield applications
US-12467123-B2 · Nov 11, 2025 · US
Top CPC classifications
Most common classification codes for China Nat Petroleum Corp in 2025.
| CPC | Patents |
|---|---|
| C09K8/68 | 10 |
| C09K8/80 | 8 |
| C09K8/426 | 6 |
| E21B2200/08 | 5 |
| E21B33/1208 | 5 |
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