Composition comprising a nanometer film structured reservoir protecting agent and a water block preventing agent, and drilling fluid containing the same and use thereof for drilling in low-permeability reservoirs

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United States of America Patent

PATENT NO 9683160
SERIAL NO

15400555

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Abstract

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

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Patent Owner(s)

Patent OwnerAddress
CHINA NATIONAL PETROLEUM CORPORATION9 DONGZHIMEN NORTH STREET DONGCHENG DISTRICT BEIJING CITY 102249
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)66W CHANGJIANG RD HUANGDAO DIST QINGDAO 266580
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITEDNO 1 BUILDING NO 5 COURTYARD HUANGHE STREET CHANGPING DISTRICT BEIJING 102206

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Jingping Shandong, CN 49 111
Lv, Kaihe Shandong, CN 21 5
Sun, Jinsheng Shandong, CN 35 21

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