塔里木盆地巴什托构造异常高压特征及成因
发布时间：2019-05-08 18:34
【摘要】：异常高压油气藏是塔里木盆地台盆区重要的勘探目标,其中巴什托构造于泥盆系东河塘组、石炭系巴楚组、小海子组和下二叠统南闸组发现了异常高压油气藏。利用钻井测井与试油气资料,根据X-射线衍射黏土矿物含量、突破压力与比表面积等实验分析结果,探讨巴什托构造异常高压特征与成因。研究表明,石炭系—二叠系处于晚成岩作用阶段,黏土矿物大量脱水、天然气充注和存在欠压实带是形成巴什托构造异常高压的主要原因。高矿化度封闭型地层水、高突破压力的Ⅰ类和Ⅱ类泥岩和膏盐岩盖层是保持巴什托构造异常高压的重要条件。
[Abstract]:The abnormally high pressure oil and gas reservoir is an important exploration target in the platform area of Tarim Basin. The abnormally high pressure oil and gas reservoirs were discovered in the Devonian Donghetang formation, the Carboniferous Bachu formation, the Xiaohaizi formation and the Lower Permian Nanzha formation. Based on the data of drilling logging and oil and gas test, according to the experimental analysis results of X-ray diffraction clay mineral content, breakthrough pressure and specific surface area, the characteristics and genesis of abnormal high pressure in Bashto structure are discussed. The study shows that the Carboniferous-Permian system is in the stage of late diagenesis, and a large amount of clay minerals are dehydrated, natural gas filling and undercompaction zone are the main reasons for the formation of abnormal high pressure in Bashto structure. High salinity sealed formation water, high breakthrough pressure type 鈪，
本文编号：2472137
[Abstract]:The abnormally high pressure oil and gas reservoir is an important exploration target in the platform area of Tarim Basin. The abnormally high pressure oil and gas reservoirs were discovered in the Devonian Donghetang formation, the Carboniferous Bachu formation, the Xiaohaizi formation and the Lower Permian Nanzha formation. Based on the data of drilling logging and oil and gas test, according to the experimental analysis results of X-ray diffraction clay mineral content, breakthrough pressure and specific surface area, the characteristics and genesis of abnormal high pressure in Bashto structure are discussed. The study shows that the Carboniferous-Permian system is in the stage of late diagenesis, and a large amount of clay minerals are dehydrated, natural gas filling and undercompaction zone are the main reasons for the formation of abnormal high pressure in Bashto structure. High salinity sealed formation water, high breakthrough pressure type 鈪，
本文编号：2472137
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