Stratigraphic and structural characteristics of Yan 9 oil-bearing group in D area of Ordos Basin

Yangjun Li; Yunhong Zhao; Shasha Yang

doi:10.1117/12.2614506

10 November 2021 Stratigraphic and structural characteristics of Yan 9 oil-bearing group in D area of Ordos Basin

Yangjun Li, Yunhong Zhao, Shasha Yang

Proceedings Volume 12050, International Conference on Smart Transportation and City Engineering 2021; 120505W (2021) https://doi.org/10.1117/12.2614506
Event: 2021 International Conference on Smart Transportation and City Engineering, 2021, Chongqing, China

Abstract

For area D of the Ordos Basin, the Yan 9 oil-bearing group were finely divided and compared using the marker layer method, the principle of equal thickness, and the sedimentary cycle analysis method. According to the stratigraphic division results, the plan view of the thickness of the small strata and the structure map of the top of the strata were drawn. It is believed that the Yan93 and Yan91+2 stratums are relatively complete in the whole area and have not suffered denudation. The overall thickness of the formation does not vary widely, and the thickness of the two small layers is mainly about 20m. The nose-like structure at the top of Yan 9 is densely developed, forming multiple rows of nearly east-west nose-like structures, with a structural amplitude less than 25m, and the distribution of rhinoplasty has a certain difference. The distance between rhinoplasty is 3-8km. These nose structures provide favorable trap conditions for hydrocarbon accumulation. The study of the stratigraphic and structural characteristics of the Yan 9 oil-bearing group provides basic geological data for the prediction of later sedimentary facies, sand body distribution, reservoir characteristics and favorable blocks, which is of great significance.

Citation Download Citation

Yangjun Li, Yunhong Zhao, and Shasha Yang "Stratigraphic and structural characteristics of Yan 9 oil-bearing group in D area of Ordos Basin", Proc. SPIE 12050, International Conference on Smart Transportation and City Engineering 2021, 120505W (10 November 2021); https://doi.org/10.1117/12.2614506

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