电缆测压资料在西非某深水油藏评价中的应用
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摘要
通过西非某深水油藏探井、评价井丰富的电缆测压资料,结合地震和成像测井资料,开展了2口井砂体对比,对低电阻率疑难油层进行了综合解释,认为sand2-2砂体为一套低电阻率油层。探讨了电缆测压资料确定油水界面的原则及影响因素,预测了油水界面,确定了油藏模式。通过地层对比,结合压力分析可知该油藏存在2套油水系统,为受构造控制的2个层状边水油藏。该研究对深水油藏评价和储量计算具有指导意义,指出了选用不同水线预测油水界面给储量评价带来的潜力和可能存在的风险。
In an oil reservoir log evaluation of west Africa,with seismic data and imaging log data as supplemented data,plenty of wireline formation test pressure data of exploration wells and evaluation wells are used to carry out sand body correlation of two wells and low-resistivity oil layers comprehensive interpretation.It is believed that sand2-2 is a set of low resistivity reservoir.The principles and influence factors of oil-water contact determination by the pressure data are discussed.This paper predicts the oil-water contact and determines the reservoir pattern of the studied reservoir.Formation contrast and formation pressure data show that this reservoir has two sets of oil-water systems,that is,it is two-layer edge water reservoir controlled by formation structure.This research has important guiding significance for reservoir evaluation and reserve calculation;also points out the potential and risk of reserve evaluation with different waterlines to predict oil-water contact.
In an oil reservoir log evaluation of west Africa,with seismic data and imaging log data as supplemented data,plenty of wireline formation test pressure data of exploration wells and evaluation wells are used to carry out sand body correlation of two wells and low-resistivity oil layers comprehensive interpretation.It is believed that sand2-2 is a set of low resistivity reservoir.The principles and influence factors of oil-water contact determination by the pressure data are discussed.This paper predicts the oil-water contact and determines the reservoir pattern of the studied reservoir.Formation contrast and formation pressure data show that this reservoir has two sets of oil-water systems,that is,it is two-layer edge water reservoir controlled by formation structure.This research has important guiding significance for reservoir evaluation and reserve calculation;also points out the potential and risk of reserve evaluation with different waterlines to predict oil-water contact.
引文
[1]陆大卫,宁从前.MDT测井技术在我国陆上油气勘探中的应用[J].中国石油勘探,2003,8(1):58-66.
[2]孙风涛,田晓平,张越.压力资料预测油水界面精度分析[J].石油地质与工程,2010,24(2):73-74,78.
[2]孙风涛,田晓平,张越.压力资料预测油水界面精度分析[J].石油地质与工程,2010,24(2):73-74,78.
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