鄂尔多斯盆地中生界三叠系延长组岩性油藏是我国较早成功勘探开发, 以压裂改造闻名的低渗透、特低渗透岩性油气藏。近年来, 笔者在勘探科研实际工作中对各种应用于沉积、成藏因素分析的地质技术方法从实用性的角度进行了应用和挑选, 最终选择和发展了几种真正简便、实用的岩性油藏沉积、成藏分析地质技术方法, 包括: 沉积发育的构造背景分析和盆地构造属性确立、以岩石组分为主的物源分析、以岩石结构为主的沉积环境分析、陆相湖盆层序地层分析方法、层序与成藏组合规律等, 通过在鄂尔多斯盆地延长组岩性油藏的实际应用取得了较好的效果, 这些地质分析技术对于深入研究岩性油藏成藏规律具有重要的实用价值和广泛应用前景。

Lithologic reservoirs of Triassic Yanchang Formation of Mesozoic in Ordos Basin are characterized by low and extra- low permeability, which is famous for fracturing treatment. Geological techniques applied in deposition and reservoir genetic factors analysis are studied from the aspect of practicability. Several simple and practical geological methods are selected and developed, which include the analysis methods for structural setting and basin tectonic type in well developed deposition, source origin, depositional environment dominated by rock texture, sequence stratigraphy of continental facies lake basin, sequence and plays. These geological techniques will take a significant part in studying accumulation rules for lithologic reservoirs. Good results have been achieved in the practical application in Ordos Basin.