沾化凹陷低电阻率油层成因分析及综合判识

Genesis Analysis and Synthetical Identification of Low-resistivity Reservoirs in Zhanhua Sag

李庆忠 石砥石 宋广达 顾琳

LI Qing-zhong SHI Di-shi SONG Guang-da GU Lin

中石化 国际石油勘探开发有限公司, 北京 100083; 胜利油田有限公司 地质科学研究院, 山东 东营 257015

Internation Petroleum Exploration & Production Crop. of SINOPEC Beijing 100083, China; Geology Scientific Research Institute, Shengli Oil Field Ltd., Dongying 257015, China

通过对沾化凹陷测井低电阻率油层的研究,从储集层特征、地层水矿化度及钻井工程等方面总结了低电阻率油层形成的主要因素,在不同地区,一种或几种因素对低电阻率油层的形成起主导作用。认为测井解释过程中结合地质分析和录井、钻井过程等进行综合分析,对于正确认识低电阻率油层是一种行之有效的方法。在沾化凹陷探井综合复查应用中取得明显效果。

One or several factors play the main role in low-resistivity reservoirs in different region. But it is hard to analyse. By researching the characters of low-resistivity oil reservoirs in Zhanhua Sag, Shengli Oil Field, China, the main factors of formation of them can determined by analysing such aspect as characters of reservoirs, salinity in strata and drilling engineering. And we suggest it is an effective method by synthetically analyzing the borehole log data, hydrocarbon showing and other geological data to identify reservoirs.