摘要
塔里木盆地塔中12构造位于塔中低凸起塔中10号构造带中段,是一长期继承性古隆起。该构造志留系、奥陶系多个层段均见到良好的油气显示并获得了工业油流。根据对油气显示的分析,认为石炭系东河砂岩的油迹、荧光显示是断层垂向渗漏所致。通过断层封闭性、含氮化合物、油源生标对比等分析,并结合其他学者对包裹体成分、均一温度的测定资料,分析了塔中12构造志留系及上奥陶统的油气成藏过程。另外,通过分析塔中12构造下奥陶统的油气成藏条件,认为该层系有望获得工业气流。
TZ12 structure, an inherited paleo-uplift during geologic epoch, is located in the central part of TZ10 structure. The show of oil and gas including fluorescence, oil slick, oil trace, asphalt and crude oil is quite active in many Silurian and Ordovician intervals. In addition, the industrial oil has been got in Silurian. The analysis re- veals that the show of oil and gas, oil trace and fluorescence in Carboniferous may come from the underneath strata through fault leakage. The multiple oil/gas reservoiring process for Silurian and Upper Ordovician of TZ12 struc- ture is discussed by analyzing fault seal, pyrrole nitrogen compound, source rock correlation as well as other schol- ars＇ research on inclusion composition and homogenization temperature, which will help better understand the oil and gas distribution of Tazhong area. Moreover, the hydrocarbon pooling conditions of Lower Ordovician indicates that it＇s quite likely to get industrial gas flow.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2009年第1期76-85,共10页
Natural Gas Geoscience
基金
国家重点基础研究发展计划项目(编号:113404GJ0003)
国家自然科学基金项目(编号:40602016)联合资助
关键词
油气成藏
断层封闭性
复式油气藏
油源对比
塔中
Hydrocarbon accumulation
Fault sealing
Complex reservoir
Source-rock correlation
Tazhong area.
