砂质碎屑流概念及其在鄂尔多斯盆地延长组深水沉积研究中的应用

砂质碎屑流是近年来日益受到重视的一种新的砂体成因类型,其相关理论是对"鲍玛序列"和"浊积扇"等深水沉积理论的部分否定和完善.阐述了砂质碎屑流概念精华与存在问题,指出只有进一步结合我国陆相盆地沉积不断完善该理论,才能提高勘探成功率,从而促进我国石油工业的发展.同时运用砂质碎屑概念,将鄂尔多斯盆地湖盆中心深水区延长组长6段...

The Concept of Sandy Debris Flow and Its Application in the Yanchang Formation Deep Water Sedimentation of the Ordos Basin

Sandy debris flow is a new sandy type and attracts more and more attention in recent years. Its relative theory is partial negation and improvement of deep water sediments concepts like the "Bouma Sequence" and "turbidite fan". This paper describes the essence of the concept of sandy debris flow and existing problems, and points out that only by combining the features of continental sedimentary basins in China to improve the theory can the success rate of exploration be improved, thereby promoting the development of China's oil industry. This paper also used the concept of sandy debris flow. The sedimentation of Chang 6 is divided into sandy debris flow, classic turbidite and slump, the three kinds of sediment gravity flows and traction underflow in the deep water area of the lake center in Ordos Basin. Studies suggest that sandy debris flow most develops in the region, and its spatial distribution is mainly controlled by the deepwater slope breaks. Steep and gentle slope significantly have different distribution patterns; the former generally parallels to the slope break distribution, and the latter distribution is perpendicular to the slope break. Finally, the paper points out that because of the wide area of distribution, large thickness and good hydrocarbon accumulation conditions, sandy debris flow is one of the most advantageous and new exploration areas in the future in Ordos Basin.