叠前同时反演在K气田深部储层预测中的应用

Application of Pre-stack Simultaneous Inversion to Deep Reservoir Prediction in K Gas Field

王楠 张纪 孙莉 谢月芳

WANG Nan ZHANG Ji SUN Li XIE Yuefang

中国石油化工股份有限公司上海海洋油气分公司勘探开发研究院, 上海 200120

Institute of Expolration and Development, SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, China

东海西湖凹陷平北K气田平湖组为半封闭海湾相沉积,储层埋藏深,压实作用明显,且砂泥岩纵波阻抗叠置。引入横波资料后,通过测井平面均一化和岩石物理分析,认为Vp/Vs可识别储层。运用叠前同时反演,对K气田平湖组储层进行了预测,同时叠合储量计算线,为K气田开发井钻前优化提供建议。

Pinghu formation in Pingbei K gas field is semi-enclosed bay facies sediments deposited in Xihu sag of the East China Sea. The reservoirs are buried deeply, on which compaction effect was obvious. In addition, P impedance of sandstone and mudstone is overlaid. With the help of S wave data, well logging plane normalization and rock physical analysis, it is considered that Vp/Vs could be used in reservoir identification. By pre-stack simultaneous inversion, reservoir prediction has been conducted for Pinghu formation of K gas field. By overlaying with the reserve calculation line, the reservoir prediction results have been used for pre-drilling optimization of production wells in K gas field.

https://doi.org/10.3969/j.issn.1008-2336.2016.01.007