An Approach to Microfacies Analysis for Carbonate Rock in Lianglitage Formation of the Upper Ordovician, Southern Margin of Ketake Uplift,
详细信息
- 责任者：Qian Yixiong (Wuxi Research Institute of Petroleum Geology ; SINOPEC ; Wuxi 214151 ; China) ; Liu Zhongbao
- 刊名：Petroleum Geology & Experiment
- 出版年：2010
- 卷期：32(4)
- 关键词：岩礁储集层 ; reef reservoirs ; 沉积微相 ; sedimentary microfacies ; 塔里木盆地 ; Tarim Basin
- 页码：p.341-347
- 图表：3 illus., 1 plate, 9 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
Based on the microfacies analysis of carbonate rocks in the cored intervals of Lianglitage Formation in Well Zhong-2, six microfacies records of bioclastic-bearing algal pellet micritic, bryozoans and coralline framestone, bindstone, bafflestone have been recognized, as well as of six major stacking patterns of reef-shoal, reef-shoal-mound, coarse pellet shoal, beach-algal mats, algal or bioherm mound-algal mats, algal mats-subtidal low energy. From lower to upper cored intervals of Lianglitage Formation, the vertical facies distribution are respectively indicative of a gradual deepening trend, a sea-leval fluctuation and two shallowing upward succession carbonate cycles, and account for a serial of stacking pattern of pellet shoal, algal or bioherm mound and reef framestone in the first three cored intervals, with the prominent of highstand progressive system tracts of reef-beach and retrograde terrace reef-shoal developed during sea-level rising period.