成都理工大学学报（自然科学版）Issue(6)：713-722,10.DOI:10.3969/j.issn.1671-9727.2014.06.06
四川盆地高石梯－磨溪构造震旦系－寒武系含气层系流体特征
Fluid characteristics of Upper Sinian-Lower Cambrian petroliferous strata in Gaoshiti-Moxi structure of Sichuan Basin,China
摘要
Abstract
The Upper Sinian Dengying Formation and Lower Cambrian Longwangmiao Formation are the main gas-bearing strata in the Gaoshiti-Moxi structure of Central Sichuan.Depending on the hydrochemical data and the measured pressure,this paper analyzes the hydrochemical characteristics and pressure distribution,and studies the relationship between the fluid characteristics and the hydrocarbon accumulation.The hydrochemical characteristics show that the major water ions are Cl-, K++ Na+ and Ca2+.CaCl2 is the main type of the formation water in the study area.The formation water has high salinity,deep metamorphose degree,good sealing and strong reducibility.All these conditions are very favorable for hydrocarbon accumulation and preservation. According to the pressure coefficient distribution,the Dengying Formation-Longwangmiao Formation can be divided into three zones,that,the overpressure zone in the Longwangmiao Formation,the normal pressure zone in Member 4 of Dengying Formation to the upper part of Member 2 of the Dengying Formation and the subpressure zone in the lower part of Member 2 of the Dengying Formation.The high gas production area has a positive correlation with high formation water salinity area and overpressure area,and the influence of the pressure coefficients on the gas production is especially evident.关键词
四川盆地/高石梯-磨溪构造/震旦系-寒武系/地层水/超压Key words
Sichuan Basin/Gaoshiti-Moxi structure/Sinian-Cambrian/formation water/overpressure分类
能源科技引用本文复制引用
吴娟,李俊良,刘树根,赵异华,孙玮,宋林珂,宋金民,梁锋,田艳红,龙翼..四川盆地高石梯－磨溪构造震旦系－寒武系含气层系流体特征[J].成都理工大学学报（自然科学版）,2014,(6):713-722,10.基金项目
中国博士后科学基金项目（2014M552327）；国家重点基础研究发展计划“973”项目（2012CB214805）；国家科技重大专项 （）
