层序约束储层预测技术在岩性油藏勘探中的应用

与常规构造油气藏相比,岩性地层油气藏具有更大的隐蔽性,成藏规律更复杂,勘探难度更大,对储层预测等技术的精度要求更高。岩性地层油气藏勘探有效配套的技术,尚处于探索阶段。结合地质和构造特征以及岩性油气藏的发育特点,着重用地球物理的方法来完善和精细化层序地层的划分,对储层进行预测,进而使岩性圈闭的预测精度得以提高。高精度层序地层学及高分辨率地震技术,特别是层序地层学与地震的有效结合,按照沉积背景分析、层序地层划分、小断层精细研究、储层反演、地震相分析、有利区带预测的步骤,在层序约束的等时格架内,重点应用波形分类地震相分析和储层反演特别是特征曲线重构反演来解决平面相识别及垂向分辨率问题,对岩性油气藏认识具有较为明显的效果。文章从我国岩性油气藏勘探的技术需求出发,紧紧围绕岩性油气藏勘探中层序地层学应用和储层预测两大核心内容,提出了一种适合于岩性油气藏勘探的配套技术。

Application of Reservoir Predicting Techniques of Sequence Strata to Lithologic Reservoir Exploration

The lithologic stratigraphic oil and gas reservoir features in more concealment,more complicated reservoir-forming rules,and more difficult exploration as compared with the conventional structural one. So it requires higher on the accuracy of techniques including the reservoir prediction technique. Valid allied techniques for lithologic stratigraphic reservoir exploration are still in initial stage. Combined with the geological and structural features and the development characteristics of lithologic reserv...