摘要
针对鄂尔多斯盆地镇泾地区的油气勘探,分析了该区油气成藏形成的地质条件,总结了其分布规律。研究区中生界延长组具备一定的烃源条件,但总体来说较邻区西峰油田差;辨状河三角洲平原、前缘亚相各种成因类型的砂体是最主要的储集层,所形成的厚层砂体对油气运移有利但对成藏不利;该区主要发育岩性、构造—岩性油气藏。烃源岩质量、分布范围、有利沉积相带和微构造控制不同类型的油藏分布。根据目前的勘探现状、油藏形成条件和分布规律,指出应围绕圈闭发育地区进行勘探。
After analyzing the geologic conditions of the oil and gas accumulation in Zhenjing area, Ordos Basin, three distribution patterns are summarized according to the oil and gas exploration in this area. At first, the better source rocks deposit at Mesozoic Yanchang Group in the studied area, however, worse than that of adjoining Xifeng oil field generally. Secondly, the main reservoir sand bodies are of braid river delta plain and front sub-facies; the formed and thick sand bodies are favorable for the migrating, but unfavorable for accumulating. At last, lithologic traps and structural- lithologic traps develop in Zhenjing area. Moreover, different types of reservoir distribution are determined by the quality and distribution of source rocks, the favorable sedimentary facies belts and microtectonic. This paper also indicates the exploration targets should be focused on the traps development region on the basis of the current exploration situation, the reservoir-forming conditions and the distribution.
出处
《天然气勘探与开发》
2007年第2期21-25,76,共5页
Natural Gas Exploration and Development
基金
中国石油化工股份有限公司科技项目(编号G1303-06-KK-0066)
关键词
鄂尔多斯盆地
中生界
油气成藏
Ordos Basin, Zhenjing area, Mesozoic, hydrocarbon accumulation
