低电阻率油层的综合识别方法研究

Integrated Identification Method of Low-resistivity Reservoirs

近年来,胜利油区发现了众多的低电阻率油藏,但由于低电阻率油层储层电阻率偏低,利用常规方法进行油水层识别难度较大。而气测录井资料是直接由裸眼井取得的第一性的资料,且与储层导电性关系不大,但与储层含油性密切相关,能够在一定程度上反映储层的流体特性,对低电阻率油层识别具有较好的补充作用。因此通过研究提出了以油气成藏规律为依托,以测井资料为依据,以气测录井资料为补充的低阻油层综合识别方法,在低电阻率油层的识别中取得了较好的应用效果。

Lots of low-resistivity reservoirs were found out in Shengli Oilfield, conventional logging responses in low-resistivity reservoirs were difficult to distinguish oil and water layers because of the low-resistivity reservoirs. Gas logging was the primary data from open-hole, it was not closely related with conductibility and closely related with oil content. To some extent gas logging can reflect the fluid character of the reservoir, and is compensation to the low-resistivity reservoirs. A method for low-resistivity reservoir recognition is proposed based on hydrocarbon accumulation and well logging data. It is used with good application result.