Abstract In the central deeply-depressed area of Biyang sag in Nanxiang Basin, the organic shale was developed in semideep-deep lacustrine facies which were deposited in freshwater-saltwater environments. The lacustrine shale had various kinds of complex lithofacies, and changed quickly. Totally, it could be divided into argillaceous siltstone, silty shale, aphanitic calcareous shale, recrystallization calcareous shale and dolomitic shale. They were rich in organic matter, and offered a favorable material basis for continental shale oil. Biyang sag shale extended widely in large thickness, high content of organic matters and better organic matter types, appropriate thermal evolution degree,|high brittleness mineral content and petroliferous properties. Recent studies made it clear that Biyang sag had favorable formation conditions for shale oil. On this basis, the shale oil exploration and development technology were developed, including petrology analysis technology, geological multi-parameter comprehensive evaluation technology and the favorable zone evaluation technology. Moreover, the main controlling factors on the shale oil accumulation were determined and target area was predicted. The above research indicated that China's continental shale oil exploration had made significant breakthrough and demonstrated good exploration and development prospects of continental shale oil in China.
About author: Wang Min, born in 1958, is a professor senior engineer, and is engaged in comprehensive researches on petroleum geology and management. E-mail: wangmin@sinopec.com.
Cite this article:
Wang Min,Chen Xiang,Yan Yongxin et al. Geological characteristics and evaluation of continental shale oil in Biyang sag of Nanxiang Basin[J]. JOPC, 2013, 15(5): 663-671.
Wang Min,Chen Xiang,Yan Yongxin et al. Geological characteristics and evaluation of continental shale oil in Biyang sag of Nanxiang Basin[J]. JOPC, 2013, 15(5): 663-671.
陈祥, 王敏, 严永新, 等. 2011a. 泌阳凹陷陆相页岩油气成藏条件分析[J]. 石油与天然气地质, 32(4): 568-576. 陈祥, 严永新, 章新文, 等. 2011b. 南襄盆地泌阳凹陷陆相页岩气形成条件研究[J]. 石油实验地质, 33(2): 27-32. 戴金星, 裴锡古, 戚厚发. 1996. 中国天然气地质学(卷二)[M]. 北京：石油工业出版社, 200-264. 蒋裕强, 董大忠, 漆麟, 等. 2010. 页岩气储集层的基本特征及其评价[J]. 天然气工业, 30(10): 7-12. 吕明久, 付代国, 何斌, 等. 2012. 泌阳凹陷深凹区页岩油勘探实践[J]. 石油地质与工程, 26(3): 1-4. 孙赞东, 贾承造, 李相方, 等. 2011. 非常规油气勘探与开发[M]. 北京：石油工业出版社, 865-976. 吴奇, 胥云, 刘玉章, 等. 2011. 美国页岩气体积改造技术现状及对我国的启示[J]. 石油钻采工艺, 33(2): 33-35. 杨道庆, 陆建林. 2005. 泌阳凹陷新生代构造演化及形成机制[J]. 石油天然气学报, 27(4): 416-419. Centurion S. 2001. Eagle Ford Shale: A multi stage hydraulic fracturing, completion strends and production outcome study using practical data mining techniques[R]. SPE 149258, 2001-8. Randy F L, Willam D H, Aragon J. 2012. Impact of completion system, staging and hydraulic fracturing trends in the Bakken formation of the east Willistion basin[R]. SPE 152530, 2012-2. Ricardo C B M, Lakani R. 2012. Developent of unconventional resources in north Africa: Evaluation approach[R]. SPE 150406, 2012-2. Tran T, Sinurat P, Wattenbarger R A. 2010. Production characteristics of the Bakken shale oil[R]. SPE 145684, 2010-11.
