Strong plugging drilling fluid composition and preparation method thereof, and use thereof
US10533122B1 · kind B1 · utility
0Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the field of drilling fluid, and discloses a strong plugging drilling fluid composition and preparation method thereof, and use thereof. The strong plugging drilling fluid composition comprises water, bentonite, Na2CO3, a shale inhibitor, a filtrate reducer, a viscosity reducer, an anti-collapse agent, a nanometer plugging agent, a lubricant and a weighting agent. The shale inhibitor is modified asphalt, the anti-collapse agent is ultra-fine calcium carbonate, and the nanometer plugging agent is polyethylene glycol surface-modified nano-graphene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.