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- Title
Identification and internal anatomy of Carboniferous volcanic reservoir of Chepaizi Uplift in Junggar Basin.
- Authors
PAN Hong; LI Xiaoshan; JIN Ping; JIANG Zhibin; GU Kaffang
- Abstract
The volcanic oil reservoir is characterized with variable lithology and lithologic faces, strong heterogeneity, hard prediction. Taking the Carboniferous volcanic rocks of Chepaizi Uplift in Junggar Basin as an example, combined with the core, seismic data and well logging, we mainly studied on volcanic rock mass characterization, division of volcanic periods, analysis of volcanic mass, prediction of dominant lithofacies. Based on this, the three phase and multiple attribute characteristics of volcanic rock mass formed by lithofacies, logging faces and seismic faces are summarized. The results show that there are two volcanic channels and seven volcanic rocks in the monoclinic axis of Chepazzi Uplift in Junggar Basin. The volcanic eruption is the central eruption mode which has experienced three periods of volcanic eruption. Longitudinally, the Carboniferous strata from deep to shallow are successively divided into stages C1, C2 and C3. The stage C3 was severely denuded. The stage C2 manly developed overflow volcanic rock mass. Eruptive volcanic plutons were developed in stage C1. The physical property of volcanic rock mass in the eruptive phase is obviously better than that in the overflow phase. The high tectonic position near the crater is the dominant lithofacies development area. The identification and internal anatomy of volcanic rocks in Chepazi Uplift provide guidance for the exploration and development deployment in this area.
- Publication
Journal of Northeast Petroleum University, 2022, Vol 46, Issue 6, p40
- ISSN
2095-4107
- Publication type
Article