南阳油田高阻水淹层成因与解释方法浅探

On the Genesis of Highly Resistive Water out Zones in Nanyang Oilfield and Its Interpretation

唐文生，符晓颖，张高久．南阳油田高阻水淹层成因与解释方法浅探，测井技术，１９９８，２２（３）：１９９～２０３南阳油田大量存在的高阻水淹层，一直被视为典型的淡水水淹特征。文章对高阻水淹层成因进行了重新探讨，依据实际资料和测井响应特征，总结出了高阻层的测井响应规律，并对响应机理进行了分析，认为砂岩中的岩屑矿物、自生矿物是导致高阻的主要原因。此外，研究了油层及高阻油层、高阻水层、高阻水淹层的区分和定量解释技术，取得了较好的效果。

There are a lot of highly resistive water out zones in Nanyang Oilfield. It was considered that the high resistivity was caused by fresh water. On the basis of available data and characteristics of log response, the response patterns of highly resistive reservoirs are summarized and the mechanism of the log response is anlaysed. By restudying those zones, some new viewpoints on the cause of the high resistivity are presented, i.e. mainly lithic mineral and authigenic mineral in sandstone. Furthermore, how to distinguish and quantitatively interprete highly resistive oil/water/water out zones is successfully described.