史南油田浊积砂岩低电阻油层成因及定性解释方法研究

Study of Origin and Qualitative Interpretive Method on Oil-Bearing Formation with Low-Resistance in Shinan Oil Field

焦红岩 全宏 李雪梅 林荣丽 李梅 牛福玲

JIAO Hong-yan QUAN Hong LI Xue-mei LIN Rong-li LI Mei NIU Fu-ling

中石化胜利油田有限公司现河采油厂, 山东东营 257068

Xianhe Oil Production Plant of Shengli Oilfield Co. Ltd., SINOPEC, Dongying 257068, China

低电阻率油层测井响应特征不明显,经常造成油层解释级别降低,甚至被漏掉,造成油田开发效益损失。文章结合胜利油区史南油田浊积砂岩低电阻油层实际开采情况,通过对多口井地质、测井等资料的深入研究,分析其岩性、物性、含油性与电性之间的关系,进行了低电阻油层成因敏感因素分析研究,佐证了该地区低电阻油层存在性,并探索出多井储层特征类比、油水层自然电位特征对比等通过常规测井系列曲线定性判断和解释低电阻率油层的方法,对识别低电阻率油层具有一定的指导性。

The response characteristics of logging on low-resistance oil layer is not obvious,which often decreases the level of interpretation of low-resistance oil layer,even lose it; thus causes loss for oil field developing. This article combines the condition of production in low-resistance oil layer on turbid reservoir in Shinan oil field, deeply research multi-well geology and log information,and analyze relation of lithological composition, physical attributes, property of oil-bearing and electronic attributes of low-resistance oil layer. It studies sensitive factors on low-resistance oil layer, and confirms the existence of low-resistance oil layer in this field. It also explores methods to decide and interpret low-resistance oil layer by conventional series log curves such as analogy of reservoir characteristics of multi-well and spontaneous characteristics between oil layer and water layer. It is helpful to identify oil-bearing formation with low resistance.