The application of geostatistical inversion to reservoir prediction of Tuo 11 south area
-
摘要: 针对坨11南地区沙二段8砂组含油砂体较薄,低于地震资料分辨率,且油砂与水砂纵波阻抗差异较小,有效储层识别难的问题,本次研究在分析油层与水层的地球物理响应特征的基础上,应用地质统计反演技术,并结合电阻率曲线来约束反演,预测出了该区沙二段8砂组含油砂体的空间展布特征,并探索性地预测出了该区油藏的油水界面. 反演结果证实:坨11南地区沙二段8砂组油藏的油水界面大约在2 237 m,扩大了早期研究确定的含油面积,与新钻井结果吻合较好. 地质统计反演结果首次在坨11南地区的探索应用中取得了较好的效果,为该区进一步的勘探拓宽了思路.Abstract: The prediction of oil-bearing sand of the second member of Eocene Shahejie Formation of Tuo 11 south area faces many problem.First,oil-bearing sand cannot be identified by seismic data because of the small thickness;Second,there exists difference of P-impedance between oil-bearing sand and water-bearing sand.Through the analysis of the geophysical characteristics of oil-bearing sand and water-bearing sand,the authors predicted the spatial distribution characteristics of oil-bearing sand using geostatistical inversion un-der the constraints of resistivity curve,and also predicted the oil-water interface.Inversion results have confirmed that the oil-water inter-face is at about the depth of 2 237 m,which expands the oil-bearing area determined by early studies and is in good agreement with the results of the new drilling.Geostatistical inversion results have achieved good result in Tuo 11 south area for the first time,which widens the train of thought for the further exploration.
-
-
计量
- 文章访问数: 221
- PDF下载数: 28
- 施引文献: 0
下载: