Patent · US Active

Nanometer film structured reservoir protecting agent, drilling fluid containing the same and use thereof in low-permeability reservoirs

US9701884B1 · kind B1 · utility

1Cited by

0References

5Claims

0Family size

Assignee

CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) · CN

Inventors

Jinsheng Sun · Qingdao, CN
Kaihe Lv · Qingdao, CN
Jingping Liu · Beijing, CN

Key dates

Filing date	Jan 6, 2017
Grant date	Jul 11, 2017
Priority date	—
Expiry date	Jan 6, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/032
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to the petroleum drilling field and discloses a nanometer film structured reservoir protecting agent, a drilling fluid containing the same and use thereof in low-permeability reservoirs. The structured nanometer film reservoir protecting agent comprises montmorillonite laminas, structural units represented by formula (1) and structural units represented by formula (2),

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.