Development characteristics and petroleum geological significance of fault-dissolution body in Changxing Formation of LG area, northeast Sichuan Basin

Peng Lu

doi:10.1117/12.2668244

23 February 2023 Development characteristics and petroleum geological significance of fault-dissolution body in Changxing Formation of LG area, northeast Sichuan Basin

Peng Lu

Author Affiliations +

Proceedings Volume 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022); 125511X (2023) https://doi.org/10.1117/12.2668244
Event: Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 2022, Changchun, China

Abstract

Affected by Emei rifting, Northeast Sichuan was in a tensile environment in the late Maokou Formation, and the Kaijiang Liangping trough gradually began to take shape. The Changxing period was the peak period of trough development. The platform margin of Changxing Formation developed a reef reservoir, which is also the main exploration layer series of LG gas field. However, no in-depth study was carried out on the development of pore type fault solution reservoir in the platform. In Yanshan Himalayan period, LG area developed NW-SE fault zone under the joint action of Daba Mountain and Huaying Mountain, and the development position of fault zone controlled the distribution law of fault solution. Through the fine interpretation of 3D seismic data, the distribution law of NW trending fault trains in the area is implemented; according to the drilling conditions of lg11 well, combined with the practical experience and theoretical research foundation of fault solution in Tahe block, the forward modeling model is established. Through the analysis of forward modeling results, the seismic reflection characteristics of fault solution are determined, and the development model of fault solution in Changxing Formation in LG area is established; on the basis of tracing and depicting the characteristics of the fault solution in the profile, the distribution law and distribution characteristics of the fault solution in the Changxing Formation in the study area are defined by using seismic means such as multi-attribute analysis, which provides a new direction for oil and gas exploration in the Changxing Formation.

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Peng Lu "Development characteristics and petroleum geological significance of fault-dissolution body in Changxing Formation of LG area, northeast Sichuan Basin ", Proc. SPIE 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 125511X (23 February 2023); https://doi.org/10.1117/12.2668244

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KEYWORDS

Modeling

Reflection

Carbonates

Extrusion

3D modeling

Data modeling

Resistance

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