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克拉玛依油田六中区三叠系克下组砾岩油藏进入中-高含水期后,注入水沿高渗透层突进,油层出砂严重,年综合递减率大于9.5%。在深入研定油藏的构造和储层特征后,采取多种注采方式,查清了油藏的油水分布和油水运动规律,提出整治方案,1990-1992年实施后,年采油量上升17%,综合含水率由81.2%降为77.5%,地层压力上升7%,采收率由32%提高到35%。
After the Middle Triassic Cretaceous conglomerate reservoir in the Middle Central Karamay Oilfield entered the middle-high water cut period, the injected water protruded along the high permeable layer, resulting in severe sand production. The annual comprehensive decline rate was more than 9.5%. After thoroughly studying the structure and reservoir characteristics of the reservoir, a variety of injection and production methods were adopted to identify the oil and water distribution and the law of oil and water movement in the reservoir and put forward the remediation plan. After the implementation in 1990-1992, the annual oil production increased by 17 %, The integrated moisture content decreased from 81.2% to 77.5%, the formation pressure increased by 7% and the recovery rate increased from 32% to 35%.