We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
塔西北地区寒武系肖尔布拉克组储层发育 主控因素及成岩演化过程 ——以柯坪南 1 井为例.
- Authors
刘丽红; 韩 淼; 高永进; 张远银; 刘成鑫; 段 野; 杨有星; 姜鹍鹏
- Abstract
As an important reserve growth point and strategic replacement area, the Cambrian subsalt dolomite in Keping area of Tarim Basin has shown great exploration potential and good exploration prospect, but the un⁃ clear understanding of the formation mechanism of high-quality reservoir restricts the oil and gas exploration in this area. In this paper, the rock types and characteristics of the Xiaoerbulake Formation are described in detail by means of microscope observation, geochemical analysis and interpretation of well logging data of Well Kepingnan 1. The Xiaoerbulak Formation is divided into four members from downward to upward. The relative high Mn content (87-137.7)×10−6 ,δ18O (average of -6.37‰) and 87Sr/86Sr (average of 0.710 9) values indicate that the dolomitization of Xiaoerbulake Formation occured in penecontemporaneous-shallow burial period. The dolomite formed in the early period increases the porosity of the reservoir and resists the compaction in deep burial period, which is the basis for the reservoir formation. The δ13C values of the first and second members of Xiaoerbulake Formation show frequent zigzag curves, indicating frequent progression/regression process. The subsequent formed granular beach facies are key factors controlling the reservoir formation of the second member of Xiaoerbulake Formation. While the third member of Xiaoerbulake Formation is mainly controlled by tectonic fractures and perisomorphic karstification. The study analyzes the diagenetic evolution model of the well and studies the restriction mechanism of the diagenetic transformation process to the reservoir. The systematic analysis of downhole data of Well Kepingnan 1 provides basic data for the comparative study of other drilling in this area, and can provide guidance for the next exploration and deployment in the northwest Tarim Basin. Keywords:Well Kepingnan 1;Xiaoerbulake Formation;Logging response;Reservoir forming mechanism; Diagenetic evolution model.
- Subjects
CHINA; PROSPECTING; PETROLEUM prospecting; NATURAL gas prospecting; ANALYTICAL geochemistry; DATA logging; GAS condensate reservoirs
- Publication
Natural Gas Geoscience, 2023, Vol 34, Issue 5, p763
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2023.01.013