柴窝堡凹陷达坂城次凹油气成藏条件及勘探方向  

STUDIES ON THE OIL & GAS RESERVOIR FORMATION CONDITIONS AND EXPLORATION BEARING IN DABAN TOWN SUB-DEPRESSION OF CHAIWOPU DEPRESSION

作　　者：旷理雄[1] 郭建华[1] 王英明[2] 冯永宏[3] 李广才[3] 

机构地区：[1]中南大学地学与环境工程学院,湖南长沙410083 [2]石油大学盆地与油藏研究中心,北京昌平102249 [3]中国石化江汉油田分公司研究院,湖北潜江433124

出　　处：《天然气地球科学》2005年第1期20-24,共5页Natural Gas Geoscience

基　　金：中国石化股份有限公司科技项目"准噶尔盆地南缘东段油气成藏条件及勘探靶区优选"(编号:03-21)资助.

摘　　要：以有效烃源岩理论和储层(裂缝)预测、改造型盆地模拟技术方法为指导,综合研究分析了柴窝堡凹陷达坂城次凹油气成藏条件,预测了油气资源潜力,指出了勘探方向。综合研究分析表明:达坂城次凹发育有2套主要烃源岩层即上二叠统芦草沟组和红雁池组并达到了好—中等烃源岩级别,具有一定的资源潜力;主要储集层亦为芦草沟组和红雁池组,总体为较好含气储层,是主要勘探目的层;存在构造、地层、岩性和复合型4大类油气藏类型和自源—侧向排烃、它源—垂向排烃2类油气成藏模式;最有利的勘探区带为柴杨断褶带北部和三个山冲断带。The conditions of reservoir formation are studied, Oil & gas exploration potential are analysed, and the best prospecting plays are evaluated in Daban town sub-depression of Chaiwopu depression under the techniques of effective source rock theory, reservoir evaluation and reformed basin modeling. It is demonstrated that the main source rock in Daban town sub\|depression is Upper Permian which belongs to good to intermediate source rock, and has definite resources potential; the main reservoir is also Upper Permian with rather poor petrophysical properties, which,in Daban town sub-depression, is a good gas-bearing reservoir as a whole and the main exploration target for hydrocarbon; there are four types of hydrocarbon reservoirs including structural reservoir, stratigraphic reservoir, lithologic reservoir, and complex reservoir, and two patterns of reservoir formation, i.e., self source-lateral expulsion of hydrocarbon, and external source-vertical expulsion of hydrocarbon; the best plays are Chaiyang fault-fold belt and Sangeshan thrust-fault belt.

关 键 词：烃源层 储集层 油气藏形成 模式 改造型盆地模拟 柴窝堡凹陷 

分 类 号：TE122.3[石油与天然气工程—油气勘探]