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胜利油区经过近50a的勘探,在勘探开发等方面积累了大量成功的经验。在回顾胜利油区低电阻率油气层勘探历程的基础上,总结了低电阻率油气层勘探的实践思路及识别原则。实践思路包括:①从引起油气层电阻率降低的微观因素出发,研究各种类型低电阻率油气层的地质成因及分布规律;②在研究各类低电阻率油气层共性的基础上,总结出其中的规律,胜利油区低电阻率油气层的共性是储层具有相对弱的成藏动力,油气层含油饱和度相对较低。胜利油区多年的勘探实践证明,低电阻率油气层的识别原则为:以常规测井资料为基础,以地化、气测等录井资料为补充,以地区油气成藏和分布规律为支撑。
After nearly 50 years of exploration, Shengli Oilfield has accumulated a great deal of successful experience in exploration and development. On the basis of reviewing the exploration process of low resistivity reservoirs in Shengli Oilfield, the practical train of thought and identification principle of low resistivity exploration are summarized. The practical train of thought includes: (1) To study the geological origin and distribution of various types of low resistivity oil and gas reservoirs based on the micro-factors that cause the decrease of resistivity; (2) Based on the study of commonalities of various types of low resistivity oil and gas reservoirs, Among them, the commonness of the low-resistivity reservoirs in Shengli Oilfield is that reservoirs have a relatively weak reservoir-forming motivation, and the oil-bearing reservoirs have relatively low oil saturations. The exploration practice in Shengli Oilfield for many years has proved that the identification principle of low resistivity reservoirs is that based on the conventional logging data and supplemented by logging data such as geochemistry and gas logging and supported by regional hydrocarbon accumulation and distribution .