鄂尔多斯盆地马岭地区南部长8储层油气成藏与富集规律

马岭地区南部上古生界油气资源潜力大,已成为鄂尔多斯盆地重要的勘探目标。基于地质特征与开发现状的研究基础,通过测试分析资料统计结果,分析该区长8油藏的油气富集规律。结果表明,该区长8油藏分布与长7烃源岩发育的厚度有关,储油砂体主体带清晰,油气聚集受储层物性和沉积相的控制,小范围内也可能受构造控制,其次还与孔隙结构和润湿性有关。

Accumulation and Enrichment Rule of Oil and Gas of Chang 8 Reservoir in the South of Maling Area, Ordos Basin

The Upper Paleozoic oil and gas resources in the southern Maling Area have great potential, and it has become an important exploration target in the Ordos Basin. Based on the research of geological characteristics and development status, the oil and gas enrichment rule of Chang 8 Reservoir in this area is analyzed through the statistical results of test and analysis data. The results show that the distribution of Chang 8 Reservoir is related to the thickness of Chang 7 source rock, the main belt of oil storage sand body is clear, and oil and gas accumulation is controlled by reservoir physical properties and sedimentary facies, and also may be controlled by structure in a small scope, and then related to pore structure and wettability.