渤南洼陷罗151块火成岩油藏特征及开发对策

罗151块火成岩油藏是近年在济阳坳陷发现的中型油藏,油藏埋深3150m;在研究罗151井区火成岩成因、侵入期次、岩相学及储层非均质性的基础上,建立了火成岩储层概念模型,划分出角岩微孔隙型油藏及辉绿岩溶蚀孔隙-裂缝型油藏两个类型,纵向上分为4个带,平面上分为3个区;预测了火成岩储层发育的有利部位;部署了合理的开发井网,钻探后,完钻新井14口,平均单井日产油27t,取得了显著效果;火成岩油藏初期产能高,产量递减快,弹性产率低,依靠天然能量开采,最终采收率只有14.1%,可以进行注水开发,注水效果较好。

The oil pool characters and exploitation countermeasure of Luo151 block igneous rock in Bonan depression

Luo 151 block,buried at 3 150 meters, is middle-scale oil reservoir discovered recently in Bonan depression.Based on researching of origin of igneous rock, sequence of invading,petrography and anisotropism of the reservoir,a concept model of igneous rock reservoir is set up,two types of reservoir of micro-porosity and that of erosion-fracture are recognized, three segments in vertical and four zones in horizontal are classified,and prosperous sit is predicted, proper production well net is deployed. and 14 new wells are drilled. The average production is 27tons per day. The author illustrates the characters of the reservoir which are high production ability, quick decreasing,low elastic production rate. The rediscovery only can approach up most at 14.1% in way of producing by energy of natural gas, while production driven by injecting water may obtain better result.