水淹层测井响应特征研究——以530井区八_(4+5)层油藏为例

RESEARCH ON LOG RESPONSE FEATURE OF WATER FLOODED LAYER-A CASE FROM THE J_1b_(4+5) LAYER RESERVOIR OF 530 WELL BLOCK NO.1 BLOCK

研究区域530井区八4+5层油藏为典型一类油藏,综合含水73.4%,中高含水井比例达到84%。此次研究利用岩石电阻率测井与其它测井参数相结合,采用井间电阻率对比法、径向电阻率对比法、交会图版法、自然电位偏移法对水淹层进行定量识别,以此揭示油藏水淹层岩石物理响应机理及响应特征,为水淹层判别提供依据。

The J1b4+5 Layer reservoir of 530 well block is a typical first class reservoir,composite water cut is 73.4%,the proportion of middle-high water cut well is 84%.This research combines the rock resistivity with other logging parameters,quantitative identif ication of water flooded layer is conducted according to interwell resistivity contrast,radial resistivity contrast,cross plot and SP deflection,so as to reveal petrophysical response mechanism and response feature of the reservoir water flooded layer and,provide a basis for discriminating water flooded layer.