文昌15-1油田珠江组含油储层研究

Study on oil-bearing sand reservoir of Zhujiang formation in Wenchang 15-1 oilfield,western pearl river mouth basin

文昌15-1油田是一个即将投入开发的油田,从目前该区已钻的3口井探井和评价井的资料中可知含油储层的厚度和岩性横向变化均较大。充分利用井眼测井和地质信息,在珠江组识别出2种相、4种亚相和11种微相,认为含油储层为受潮汐影响的滨海三角洲前缘分流河道砂体,是该区主要勘探目的层段。在此基础上,结合多属性综合分析结果,参考井点处古流向,预测了工区内含油储层的分布范围,为油田下步开发和井位部署提供了新的重要依据。

Wenchang 15-1 is an oil field soon put into production.Analyses of the 3 exploration and appraisal wells show relatively great horizontal changes of thickness and lithology.Information of well logging and geology was fully used to identify 2 sedimentary facies,4 intrafacies and 11 microfacies.The oil-bearing reservoir was recognized as distributary channel sand body of shore delta front influenced by tidal flow which is the main exploration target.Based on this,distribution range of the oil-bearing reservoir was predicted combined with analysis results of multi-attribute lumping and flow direction in the well points,which provides a new and important foundation for the incoming development and geometric well arrangement.