Practical analysis method for geological dessert of tight sandstone gas in Shahezi Formation of Xujiaweizi fault depression, northern Songliao Basin

Xin Li

doi:10.1117/12.2668248

23 February 2023 Practical analysis method for geological dessert of tight sandstone gas in Shahezi Formation of Xujiaweizi fault depression, northern Songliao Basin

Xin Li

Author Affiliations +

Proceedings Volume 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022); 125512E (2023) https://doi.org/10.1117/12.2668248
Event: Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 2022, Changchun, China

Abstract

Tight sandstone gas is a huge backup resource for conventional gas. The Shahezi Formation in Xujiaweizi fault depression is the main source rock in the deep basin, and the sedimentary environment is mainly lacustrine and delta facies. The source rocks have large thickness, wide distribution, high organic matter content, mature to over-mature, large amount of resources, and have broad exploration prospects. As a reservoir, it has the characteristics of close to the source, rapid sedimentary facies transition and strong reservoir heterogeneity. In this paper, a practical dessert analysis method for tight sandstone gas is established based on the detailed interpretation of seismic data and sequence division, starting from the source rock, reservoir zoning, classification and comprehensive inversion results. In general, the upper sequence of Shahezi Formation is better than the lower sequence, and the braided river delta facies is better than other sedimentary systems. The subaqueous fan delta front distributary channel of SQ4 and SQ3, the subaqueous distributary channel of braided river delta front and estuary sand bar facies are a kind of dessert development areas, which are also the most favorable facies for the next exploration. With the deepening of research and the progress of technology, the exploration of tight sandstone gas in Shahezi Formation is certain to get breakthrough.

Citation Download Citation

Xin Li "Practical analysis method for geological dessert of tight sandstone gas in Shahezi Formation of Xujiaweizi fault depression, northern Songliao Basin", Proc. SPIE 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 125512E (23 February 2023); https://doi.org/10.1117/12.2668248

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