四川盆地上三叠统须家河组气藏类型与富集高产主控因素〖
- 中国石油勘探开发研究院提高石油采收率国家重点实验室北京100083
- 收稿日期:
1900-01-01
- 修回日期:
1900-01-01
- 刊出日期:
2010-10-10
摘要: 四川盆地上三叠统须家河组，由于强烈的成岩作用，砂岩厚而致密，储层非均质性强，多类型天然气藏发育。其主要发育八种常规气藏与两种非常规气藏。其中岩性气藏、构造—岩性复合气藏等规模大，储量丰富，是重要气藏类型，主要发育于川中地区；水溶气藏也很发育，产量高，潜力大，广泛分布于川中—川西的平缓斜坡区与坳陷区，是四川盆地未来重要发展方向。须家河组天然气藏大多具有近源、高压、含凝析油、含水，分布广、规模大，气、水关系复杂等特点。由于不同地区的沉积、成岩、构造等方面的不同，其天然气成藏的主控因素差异较大。如川中地区主要控制因素是岩性，川西冲断带则主要是构造与裂缝，川北主要是裂缝与岩性。因此，储集体、构造与裂缝等是须家河组天然气聚集成藏的三大主控因素，这三大要素的有效组合也是天然气富集高产区形成的关键。
Types and Controlling Factors of Accumulation and High Productivity in the Upper Triassic Xujiahe Formation Gas Reservoirs, Sichuan Basin
- State Key Laboratory of Enhanced Oil Recovery, Exploration and Development Research Institute, PetroChina, Beijing 100083
- Received Date:
1900-01-01
- Rev Recd Date:
1900-01-01
- Publish Date:
2010-10-10
Abstract: Because of the strong diagenesis, sandstone in Upper Triassic Xujiahe Formation is thick and tight, reservoir heterogeneity is very strong, various types of gas reservoirs are developed. Major developed eight conventional gas reservoirs and two unconventional gas reservoirs. The lithological gas reservoir, structurelithological reservoir having large scale and abundant reserves, are important gas reservoirs and mainly developed in the MidSichuan area; Water soluble gas reservoir with high yield and great potential is also developed, widely distributed in the gentle slope and the Depression in the centralwest Sichuan region, is the important development direction in Sichuan Basin. The Xujiahe Formation gas reservoirs adjacent the source, have high pressure, contain condensate oil and water, distributed widely, and their scale is large and relationship between water and gas is complex. As different areas have different characters of deposition, diagenesis and structure, the main controlling factors in gas accumulation are quite different. Therefore, the distribution of reservoir, tectonic background and the degree of fracture development are the major three controlling factors of the gas accumulation in Xujiahe Formation gas reservoirs, the main control factor of accumulation and high productivity is the effective combination of the three elements.
李伟. 四川盆地上三叠统须家河组气藏类型与富集高产主控因素〖[J]. 沉积学报, 2010, 28(5): 1037-1045.
| 引用本文: |
李伟. 四川盆地上三叠统须家河组气藏类型与富集高产主控因素〖[J]. 沉积学报, 2010, 28(5): 1037-1045.
|
LI Wei. Types and Controlling Factors of Accumulation and High Productivity in the Upper Triassic Xujiahe Formation Gas Reservoirs, Sichuan Basin[J]. Acta Sedimentologica Sinica, 2010, 28(5): 1037-1045.
| Citation: |
LI Wei. Types and Controlling Factors of Accumulation and High Productivity in the Upper Triassic Xujiahe Formation Gas Reservoirs, Sichuan Basin[J]. Acta Sedimentologica Sinica, 2010, 28(5): 1037-1045.
|
点击查看大图
下载:
