Reservoir characteristics of Daanzhai member of Ziliujing Formation in Yilong-Pingchang area, Sichuan Basin

Yanping Zhu; Rongda Lin; Yaohan Yu

doi:10.1117/12.2668313

23 February 2023 Reservoir characteristics of Daanzhai member of Ziliujing Formation in Yilong-Pingchang area, Sichuan Basin

Yanping Zhu, Rongda Lin, Yaohan Yu

Author Affiliations +

Proceedings Volume 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022); 1255125 (2023) https://doi.org/10.1117/12.2668313
Event: Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 2022, Changchun, China

Abstract

Reservoir characteristics of Jurassic Daanzhai Segment in Yilong-Pingchang area are one of the important factors that affect the oiliness of the study area. Therefore, it is necessary to analyze and study the reservoir characteristics to find out the reasons for the difference of oiliness in this area. On the basis of collecting and sorting out a large number of previous research results, this paper studies the petrology, physical properties and characteristics of reservoir space in the first and second sub-segments of Daanzhai Member of Ziliujing Formation through laboratory test data, such as relevant rock slices, casting slices and scanning electron microscopy (SEM), and analyzes the control factors of reservoir development from three aspects: sedimentation, diagenesis and tectonism. The results show that the reservoir rock types of Daanzhai member in Yilong Pingchang area mainly include shell limestone and argillaceous shell limestone, with average porosity of 1.79% and average permeability of 0.036 × 10^-3μM²ⁱ in Daanzhai-1 member (hereinafter referred to as J₁dn¹), and average porosity of 1.9% and the average permeability of 0.056×10^-3μm² of Daanzhai-2 member (hereinafter referred to as J₁dn²). The reservoir space of J₁dn¹ member is mainly composed of micro crack intercrustal pores, while that of J₁dn² member is mainly composed of inter-crustal pores and intra-crustal pores.

Citation Download Citation

Yanping Zhu, Rongda Lin, and Yaohan Yu "Reservoir characteristics of Daanzhai member of Ziliujing Formation in Yilong-Pingchang area, Sichuan Basin", Proc. SPIE 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 1255125 (23 February 2023); https://doi.org/10.1117/12.2668313

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