收稿日期: 2009-06-03
修回日期: 2009-07-28
网络出版日期: 2010-04-10
Distribution and Accumulation of Oil and Gas in Mahuangshan Region,Western Ordos Basin
Received date: 2009-06-03
Revised date: 2009-07-28
Online published: 2010-04-10
谢世文, 张哨楠, 丁晓琪, 冯一波, 吴早平 . 鄂尔多斯盆地麻黄山地区油气分布及成藏特征[J]. 天然气地球科学, 2010 , 21(2) : 238 -242,262 . DOI: 10.11764/j.issn.1672-1926.2010.02.238
With petroleum exploitation in Mahuangshan region, malconformation of oil and gas distribution is increasingly obvious. Based on characteristics of oil and water distribution in typical blocks, distribution and accumulation of oil and gas in different belts (i.e. western thrust belt, central depression belt and eastern convex belt) and different layers is various, in combination with well logging, core and log information. In region of sufficient petroleum, reservoir conditions were vertically and horizontally allocated as well. The petroleum accumulation was controlled by distance between petroleum source and trap, migration pathway and effectiveness of trap, but the main factor is structural activity. The main type of oil reservoir in the western thrust belt is fault-block reservoir and fault-anticline (or fault-nose) with small area and high oil column. In the central depression belt, the main type of reservoir is tight low-permeability lithologic reservoir with large area and high oil column. In contrast, the reservoir type in the eastern convex belt is anticlinal\|lithologic reservoir.
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