Differential Hydrocarbon Migration and Entrapment in the Karstified Carbonate Reservoir: A Case Study of Well TZ83 Block of the Central Tarim Uplift Zone
详细信息
- 责任者：Xiang Caifu (State Key Laboratory of Petroleum Resources and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Wang Jianzhong
- 刊名：Earth Science Frontiers
- 出版年：2009
- 卷期：16(6)
- 关键词：油气运移 ; oil and gas migration ; 油气聚集 ; oil and gas accumulation ; 新疆 ; Xinjiang
- 页码：p.349-358
- 图表：3 illus., 33 refs.
- 分类号：1003
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The mechanism of hydrocarbon migration and entrapment occurring in complex carbonate pore-fissure-fracture reservoirs is a key problem for effective hydrocarbon exploration and development of the lower part of an overlapped basin. The production, gas/oil ratio and the composition of crude oils and natural gas in the TZ83 Well block are high at the intersection point of the NE and NW-strike fault and decrease gradually along the ridge of the structure. A basic model of the pore-fissure-fracture system is built based on the achievements in the research on carbonate karstification. As a result, gas is enriched near the hydrocarbon injection point and drives away the oil which is enriched in compartments farther from the injection point, and the complex gas-oil-water relationship is controlled by the lateral connected networks.