济阳拗陷埕北306—桩海10下古生界缝洞型储层横向预测

Lateral prediction of Lower Paleozoic fractured-vuggy reservoir in Chengbei 306-Zhuanghai 10 area,Jiyang sag,China

本文用测井资料对单井进行纵向精细预测,然后利用地震属性对储层地震响应特征进行定性分析,最后利用定量和定性相结合的方法,建立了地震属性与储层之间的对应关系,并用小波神经网络实现井约束条件下的地震属性参数,对缝洞型储层分布进行预测。预测结果根据研究区储层溶蚀空间的发育程度分为较发育、发育差及不发育等3个区域。在工区的北部、埕北305区块西部、桩海104—桩海101区块一线以西、桩海103以南等部位存在一些溶蚀空间较发育带。

In this paper well logging data were used to conduct vertical prediction for single well,then seismic attributes were used to carry out qualitative analysis for reservoir seismic response characteristics,at last by integration of quantitative analysis and qualitative analysis,the corresponding relationship between the seismic attributes and the reservoirs was established,and the well-constrained seismic attribute fractured-vuggy reservoir prediction was realized by using of wavelet neural networks.Based on development degree of reservoir dissolution space in study area,the prediction results were divided to 3 regions,the developed region,poorly developed region and undeveloped region.In the north part of the area,and on the west of North-Cheng 305 Block,the west of Zhuanghai 104 to Zhuanghai 101 Block and the south of Zhuanghai 103 and other areas,exist some dissolution space.