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文25东沙二下油藏高含水期水淹特征研究

张戈,王荣军,黄克献,杨启明

Journal of Chongqing Petroleum College（2004）

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Abstract
应用油藏开发前期和开发中后期密闭取芯分析资料开发动态资料,研究文25东块沙二下油藏主力含油层系水淹特征及储层物性变化.研究表明:油层水淹导致储层孔渗分异更加明显,主要表现为油层主流动喉道决定的有效孔隙体积减少,驱油效率下降,无水采油期变短.这正是该油藏有关油井液量大、产油量上升不明显的原因所在.
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Key words
submerged features,reservoir,lower shaer segment,east wen,water-bearing
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