Well pattern and method for improving fire flooding effect of thick-layer heavy oil reservoir

Well pattern and method for improving fire flooding effect of thick-layer heavy oil reservoir

The invention provides a well pattern and a method for improving fire flooding effect of a thick-layer heavy oil reservoir. The well pattern is disposed on an oil reservoir whose geological structure is a uniclinal structure. The well pattern is characterized in that the well pattern comprises a fir...

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Hauptverfasser: JIN ZHAOXUN, LI SHUSHAN, SUN NA, YAN HUAYU, WANG WEIDONG, WU YICHEN, JIANG QIN, ZHANG XIAOHUA
Format: Patent
Sprache:chi ; eng
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EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator JIN ZHAOXUN
LI SHUSHAN
SUN NA
YAN HUAYU
WANG WEIDONG
WU YICHEN
JIANG QIN
ZHANG XIAOHUA
description The invention provides a well pattern and a method for improving fire flooding effect of a thick-layer heavy oil reservoir. The well pattern is disposed on an oil reservoir whose geological structure is a uniclinal structure. The well pattern is characterized in that the well pattern comprises a fire well row and at least a row of oil well. The fire well row is on the high part of the uniclinal structure. The fire wells in the fire well row are disposed along the high part of the uniclinal structure in sequence. The oil well rows are in the uniclinal structure, and are below the fire well row, and are arranged along a downdip direction of the uniclinal structure in sequence. The two adjacent well rows are arranged in parallel. The invention also provides a method for improving fire flooding effect of a thick-layer heavy oil reservoir. The method comprises: injecting gas to the fire well on the high part of the oil reservoir structure, igniting an ignition layer section, start fire flooding oil extraction; and
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title Well pattern and method for improving fire flooding effect of thick-layer heavy oil reservoir
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