Analysis on Characteristics And Influencing Factors of Volcanic Reservoirs --A Case of Niudong Block in Santanghu Basin
详细信息
- 责任者：Liu Qingjun (State Key Laboratory in Geological Process and Mineral Resources of China University of Geosciences ; Beijing 100083 ; China) ; Nie Baofeng
- 刊名：Petroleum Geology & Oilfield Development in Daqing
- 出版年：2011
- 卷期：30(1)
- 关键词：结晶岩类储集层 ; crystalline reservoirs ; 新疆 ; Xinjiang
- 页码：p.25-31
- 图表：2 illus., 3 tables, 41 refs.
- 分类号：1003
- issnNo：ISSN1000-3754
- isbnNo：CN23-1286/TQ
摘要
Based on analyses of core, cast thin section, mineral chemistry and so on, the Late Carboniferous-Permian volcanic reservoir characteristics of Niudong Block in Santanghu Basin in Xinjiang are investigated. This reservoir is mainly composed of lavas. The primary pores mainly include primary air holes, amygdales, intercrystalline pores and shrinkage joints; the secondary pores mainly include dissolved pores, weathered fissures, structural fractures and so on. The volcanic rocks have experienced the extensive filling metasomatism and the late denudation, with euzeolites, adelforsit, mixed layer of chlorite/montmorillonite and kiesels being the main fillers. The intervals with well-developed air holes-amygdales of effusive facies are the places where the primary pores are well-developed, and moreover the late dissolution usually happens in the air holes and amygdales first, therefore these intervals are the most favorable accumulating facies.