ANALYSIS OF PALEOZOIC RESERVOIR PRESERVATION IN THE NORTH CHINA
-
摘要: 以华北中新生代构造演化对古生界油气保存的区域控制作用为研究重点,除分析了古生界自身发育的盖层条件外,着重分析了中新生代盆地叠加所构成的上覆直接盖层、区域盖层以及整体封存条件。研究认为,古生界的油气保存总体具有西部好于东部、下古好于上古、北华北好于南华北的特点,本溪组、石盒子组是古生界内部主要区域盖层,东部古近系和西部广布的三叠系为古生界后期油气保存提供了区域封盖条件,同时圈闭条件是造成东西部油气保存差异的重要因素,鄂尔多斯盆地腹部和东部断陷深凹—内斜坡区是油气保存的有利单元。Abstract: This paper mainly studied the regional controlling effect of Meso-Cenozoic tectonic evolution to the Paleozoic reservoir preservation in the North China. Beside the analysis of the condition of Paleozoic seal rocks, this paper mainly analyzed conditions of overlying direct cap rocks, regional cap rocks and the overall sealing composed by Meso-Cenozoic basins superposition. The results show that the hydrocarbon preservation was better in the west than in the east, better in Lower Paleozoic than in the Upper Paleozoic, and better in the northen part of North China than in the souther part of North China. Benxi Formation and Shihezi Formation are the main regional cap rocks in the Paleozoic. The eastern Paleogene and the western Triassic formations provided regional cap rocks for the Paleozoic hydrocarbon preservation. The sealing condition is an important factor which caused the hydrocarbon preservation difference between the east and the west. The Central Ordos Basin and the eastern deep fault depression to inside slope in the North China are favorable units for the hydrocarbon preservation.
-
Key words:
- cap rock /
- tectonic evolution /
- hydrocarbon preservation /
- Paleozoic /
- North China
-
[1] 张渝昌.中国含油气盆地原型分析[M].南京:南京大学出版社,1997. [2] 何自薪.鄂尔多斯盆地演化与油气[M].北京:石油工业出版社,2003. [3] 何自新,杨华,韩申庭.鄂尔多斯盆地上古生界天然气富集规律研究[R].长庆:长庆油田分公司,2000. [4] 胡宗全,朱建辉.渤海湾盆地中南部中-新生代盆地叠合特征及上古生界牛烃规律[J].石油实验地质,2008,30(5):439-444. [5] 冯增昭,鲍志东.鄂尔多斯奥陶纪马家沟期岩相古地理[J].沉积学报,1999,17(1):1-7. [6] 蒋有录.渤海湾盆地盖层对天然气富集的影响初探[J].地质论评,1999,45(1):27-31. [7] 夏日元,唐健生,关碧珠,等.鄂尔多斯盆地奥陶系古岩溶地貌及天然气富集特征[J].石油与天然气地质,1999,20(2):133-136. [8] 郑和荣,胡宗全.渤海湾盆地及鄂尔多斯盆地上古生界天然气成藏条件分析[J].石油学报,2006,27(3):1-5. [9] 张英利,赵长毅.渤海湾盆地与鄂尔多斯盆地成藏条件对比[J].石油勘探与开发,2005,32(5):25-29. [10] 全裕科,柳广弟,丁文龙.南华北瓮地倪丘集凹陷油气显示特征及找油意义[J].石油实验地质,2006,28(4):371-379. [11] 邢厚松,肖红平,孙粉锦,等.鄂尔多斯盆地中东部下二叠统山西组二段沉积相[J].石油实验地质,2008,30(4):345-351. [12] 刘志武,周立发,何明喜,等.周口坳陷石炭-二叠系油气成藏条件与富集控制因素[J].油气地质与采收率,2008,15(5):13-17. [13] 李红梅.孤北斜坡带煤成气成藏条件分析[J].天然气工业,2006,26(2):23-25. [14] 许化政,周新科.渤海湾盆地东濮凹陷文留构造发育特征与气藏形成[J].石油实验地质,2003,25(6):712-719. [15] 杨克绳.再谈临清拗陷古生界油气勘探前景[J].石油地球物理勘探,2006,41(4):476-483. -
计量
- 文章访问数: 3415
- HTML全文浏览量: 52
- PDF下载量: 730
- 被引次数: 0
下载:
苏公网安备32021102000780号