塔里木盆地北部地层压力分布特征与油气关系
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摘要
根据塔北地区钻井实测地层压力、声波时差与深度的关系以及地震剖面处理所计算的地层压力等资料，分析了塔北地区地层压力的纵、横向分布特征后指出，在剖面上存在着苏维依（Ｎｓ）—志留系，寒武系下部—震旦系两个异常高压带；阿克库勒地区石炭系见有明显的压力异常，可构成压力封闭层，这对于下伏层系晚期油气藏的保存十分有利。
On the basis of measured formation pressure by drilling, the relation of interval transit time and depth as well as formation pressure calculated from seismic profile, this paper analyzed distribution characteristics of formation pressure in vertical and lateral directions, suggested that there are two abnormal high pressure belts in seismic profile including Suweiyi formatiom-Silurian and Lower Cambrian-Sinian, and obvious pressure anomaly occurred in Carboniferous in Akekule area, which could form confining pressure zone, being very favourable for preservation of latestageformed reservoirs under underlying strata.
On the basis of measured formation pressure by drilling, the relation of interval transit time and depth as well as formation pressure calculated from seismic profile, this paper analyzed distribution characteristics of formation pressure in vertical and lateral directions, suggested that there are two abnormal high pressure belts in seismic profile including Suweiyi formatiom-Silurian and Lower Cambrian-Sinian, and obvious pressure anomaly occurred in Carboniferous in Akekule area, which could form confining pressure zone, being very favourable for preservation of latestageformed reservoirs under underlying strata.
引文
［1］瓦尔特Н·费特尔异常地层压力（宋秀珍译），石油工业出版社（北京），1985；［2］真柄钦次压实与流体运移（陈荷立，邸世祥，汤锡元译），石油工业出版社（北京），1981
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