Ultra-low permeability oil reservoir selective foam gel water shut-off and profile control method

Ultra-low permeability oil reservoir selective foam gel water shut-off and profile control method

The invention relates to an ultra-low permeability oil reservoir selective foam gel water shut-off and profile control method, sequentially including the steps of injecting an ultra-low permeability oil reservoir selective foam gel water shut-off and profile control agent stepwise; injecting an oil...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LI HAOJUN, WANG NING, WANG SHENGPENG, QIN YAN'AN, LIU BAOWEI, LIU CHAO, GAO LIFENG, LUO CHUNXUN, WANG JING, LI DEQUAN, LIU YIJUN, WU WENCHAO, ZHANG QIAN, LUO QINGMEI, WANG XINHAI, LI HANJUN, LI XINGPEI, WANG LEI, WANG XUANFANG, DING JINGANG, YIN LIANGTIAN, LI ZHIWEI, GAO MING, CHEN SHIDONG, LI TAIYU, HU JIE, CHEN ZHIGANG, LI TIANKE, SHANG SHUILONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MINING
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:The invention relates to an ultra-low permeability oil reservoir selective foam gel water shut-off and profile control method, sequentially including the steps of injecting an ultra-low permeability oil reservoir selective foam gel water shut-off and profile control agent stepwise; injecting an oil reservoir composite modified resin cross-linking strong gel water shut-off and profile control agent; injecting an ultra-low permeability oil reservoir selective weak gel modifying and flooding agent; injecting high-concentration sealing agent of the oil reservoir composite modified resin cross-linking strong gel water shut-off and profile control agent; finally, breaking and hydrating the ultra-low permeability oil reservoir selective foam gel water shut-off and profile control agent in the oilrecovery process. The ultra-low permeability oil reservoir selective foam gel water shut-off and profile control method is adaptable to ultra-low permeability anisotropic oil reservoir formation, canenter and effectively sea