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- Title
准噶尔盆地西北部地层压力演化与 油气成藏有利动力条件研究.
- Authors
冯 冲; 陈 程; 李梦瑶; 张 磊; 朱 涛; 许 涛; 邹贤利
- Abstract
Abnormal high pressure has developed in Northwest Junggar Basin, and it is an important dynamic condition for the vertical migration of oil and gas. At present, many overpressure reservoirs have been found in the overpressure zone. This study aimed to reveal the characteristics of present formation pressure and restore the evolution characteristics of paleopressure during the reservoir forming period. Distribution and evolution characteristics of overpressure were obtained using the logging method and 2D basin simulation technology, and the influence of overpressure on oil and gas migration was discussed. The results showed that the formation pressure structures of single wells in the study area could be divided into three types. From ancient times to the present, the overpressure of each formation gradually increased, and it gradually increased from shallow formations to deep formations. The distribution of overpressure changed regularly in each period, and gradually increased from northwest to southeast; the distribution and evolution of overpressure is a favorable dynamic condition for vertical migration of oil and gas, which is of great significance to the formation of high-pressure oil and gas reservoirs in the study area.
- Publication
Acta Geoscientica Sinica, 2022, Vol 43, Issue 5, p689
- ISSN
1006-3021
- Publication type
Article
- DOI
10.3975/cagsb.2022.040701