特种油气藏2013，Vol.20Issue(1)：19-22,4.DOI:10.3969/j.issn.1006-6535.2013.01.005
辽河坳陷东部凸起上古生界致密砂岩气成藏特征
Diagenetic Characteristics of Tight Sandstone of Upper Paleozoic of East Uplift in Liaohe Depression
摘要
Abstract
The main organic matter type of Carboniferous System and Permian System of Upper Paleozoic of Liaohe East Depression is kerogen; abundance indicators and thermal evolution are high, being in the period of large volume of gas - generation; reservoir sand body is the sedimentation majorly under coast facies and delta facies, accumulative thickness is large and porosity and permeability are low; the mudstone of sea facies of Carboniferous System and the unconformity face of Permian System form the second cap rock in this area; the analyses of tectonic evolution shows that the area is of multi - diagenetic characteristics and has reservoir -forming conditions. Drilling shows that the tight sandstone gas reservoirs of Carboniferous System and Permian System belong to originally - forming oil & gas reservoirs, which have the characteristics of abnormal low pressure and inverted position of water and gas.关键词
成藏特征/异常低压/气水倒置/致密砂岩气/东部凸起Key words
East Uplift/Upper Paleozoic/tight Sandstone/Gas C - P/Type III kerogen/coast facies/delta facies/regional cap rock/multi period accumulation/primary oil and gas reservoir/abnormal pressure/water inversion分类
能源科技引用本文复制引用
李春华,于鹏,毛俊莉,李楠..辽河坳陷东部凸起上古生界致密砂岩气成藏特征[J].特种油气藏,2013,20(1):19-22,4.基金项目
中石油重点科技项目"辽河探区有利预探区带综合评价和目标优选"(2008D-0702-02) （2008D-0702-02）
