Hydrocarbon accumulation pattern and exploration direction in Baiyinchagan Sag of Erlian Basin
-
摘要: 该文介绍了白音查干凹陷地质背景和构造格局,从典型油藏解剖入手,构建了不同结构类型的油气成藏模式,发现了4种类型的油气成藏模式:即断鼻型、断块型、岩性型和地层超覆型油气成藏模式。白音查干凹陷下白垩统巴彦花群发育3套烃源岩和2套储集岩,地化分析结果显示阿二段和腾格尔组烃源岩已进入生烃高峰阶段,为凹陷主要生油源岩;空间配置上烃源岩与储集岩平面相接、空间叠置,为油气运移成藏创造了良好的条件。通过综合分析油气富集的基本条件及油气藏分布的基本规律,认为发育于塔拉断层下降盘之上的近岸水下扇沉积储集体应作为油气勘探工作的重点。Abstract: From the geological setting and structural situation of the Baiyinchagan Sag, through typical reservoir research, several different hydrocarbon accumulation patterns were built. Four of them were distinguished, namely fault-nose, fault block, lithologic type and onlap stratigraphic type. Three sets of source rock and two sets of reservoir were developed in the Bayanhua Group of the Lower Cretaceous in the Baiyinchagan Sag. Geochemical research shows that the main source rocks in the second member of the Aershan Formation and the Tenggeer Formation are already in hydrocarbon-generating peak. The source rocks and reservoirs are connected and superimposed, which provides perfect conditions for oil and gas migration. The fundamental condition of hydrocarbon accumulation and basic reservoir distribution were analyzed. The results suggest that nearshore subaqueous fans are the prior exploration field.
-
[1] 王鸿祯,何国琦,张世红.中国与蒙古之地质[J].地学前缘,2006,13(6):1-13. [2] 费宝生,祝玉衡,邹伟宏,等.二连裂谷盆地群油气地质[M].北京:石油工业出版社,2001. [3] 李述靖,张维杰,耿明山,等.蒙古弧地质构造特征及形成演化概论[M].北京:地质出版社,1998. [4] 汪新伟,沃玉进,周雁,等.构造作用对油气保存影响的研究进展[J].石油实验地质,2011,33(1):34-42. [5] 吴孔友,李林林,查明.不整合纵向结构及其成藏作用物理模拟[J].石油实验地质,2009,31(5):537-541. [6] 张亚敏,靳广兴.二连盆地白音查干凹陷成藏动力系统与油气勘探[J].新疆石油地质,2010,31(3)225-228. [7] 孙玮,刘树根,韩克猷,等.四川盆地震旦系油气地质条件及勘探前景分析[J].石油实验地质,2009,31(4):350-355. [8] 祝玉衡,张文朝,王洪生,等.二连盆地下白垩统沉积相及含油性[M].北京:科学出版社,2000:65-189. [9] 李健,张亚敏,王保才,等.白音查干凹陷油气富集规律[J].江汉石油学院学报,2000,22(4):1-5. [10] 刘伟新,承秋泉,范明.盖层、压力封盖和异常压力系统研究[J].石油实验地质,2011,33(1):74-80. -
计量
- 文章访问数: 4235
- HTML全文浏览量: 109
- PDF下载量: 1792
- 被引次数: 0