辽河油田某区块东营组油气藏的预测

Prediction of Dongying formation reservoirs in a block of Liaohe oilfield

1. 成都理工学院, 成都 610059;2. 辽河油田勘探局, 盘锦 124010

Chengdu College of Technology, Chengdu 610057

本区块位于辽河盆地大平房主体构造的西南, 由大32块圈闭、大31块断背和大25块断鼻组成, 断层发育, 构造复杂, 油气藏为复合型油气藏。东营组地层是本区火山岩最发育层段, 使得地震资料品质差。利用测井、地震、地质资料在该区采用统计模式识别技术中的IRRS法和人工神经网络技术改进的BP法, 并结合G－LOG方法和孔隙度预测方法, 对该区东二、东三段进行油气藏预测, 均获得令人满意的效果。

The block is located in the southwest of the Dapingfang main structure of the Liaohe basin. It con-sists of the big-32nd-block trap, big-31st-block faulted anticline, and big-25th-block faulted nose. In the block, faults are well-developed, structures are complicated, and the reservoir is of composite type. The Dongying formation stratum is a interval in which volcanics are most developed, so the quality of seismic data is poor. New methods and techniques are used in the areas for the first time with the well log, seis-mic and geological data. We perform the reservoir prediction for the 2nd Dongying segment and 3rdDongying segment strata by the IRRS method, BP method, and G-log method as well as porosity pre-diction method. In doing so, satisfactory effects are acquired.