Genesis and Spatial Distribution of Interlayer in Tight Gas Reservoirs: A Case Study from the Lower Cretaceous Sandstones, Songliao Basin, China

Abstract:

Interlayer is a kind of rock body that reflects the seepage barrier in the reservoir sandstones. As the interlayer playing a blocking role of hydrocarbon accumulation, we can better understand the characteristics of the reservoir heterogeneity through the analysis of the causes and spatial distribution of the interlayer. Empirically, identification of four types of interlayer, including muddy interlayer, calcium interlayer, physical layer, and indistinguishable interlayer, contributes to effective production of tight gas sandstones. Each category of interlayer has a separate characteristic of the lithology and logging curves. Identifying interlayer provides a way to analyzing spatial distribution of interlayer in the tight gas field. 2-D and 3-D geological models corresponding to the distribution of interlayer can be able to establish to characterize distribution variations within the reservoirs, which show the space matching relation serving for the tight gas production.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 591-594
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.591
• Online since: June 2014
• Authors: Xiao Yu Yu, Peng Hui Zhang*, Guo Yi Zhang, Fang Ding, Ning Ning Meng, Jing Zhe Li, Ming Zhang
• Keywords: Cretaceous, Distribution, GENESIS, Interlayer, Songliao Basin, Tight Sandstone Gas

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DOI: 10.1111/j.1747-5457.1992.tb00716.x