特种油气藏2018，Vol.25Issue(2)：13-18,6.DOI:10.3969/j.issn.1006-6535.2018.02.003
鄂西鹤峰区块大隆组含页岩气地层潜力评价
Shale Gas Reservoir Potential Evaluation of Dalong Formation in Hefeng of Western Hubei Province
摘要
Abstract
The Permian Dalong Formation in the western Hubei Province is studied to further understanding the Permian organic-rich shale gas formation. Firstly,the distribution area,thickness distribution and stratum charac-teristics of Dalong Formation are described in detail. The geochemistry,reservoir property and gas content tests are implemented for the collected outcrop core samples. Finally,the shale gas resource potential is evaluated for Dalong Formation. Research indicates that the Dalong Formation with small distribution area and stable formation thickness mainly consists of black carbonaceous and carbonaceous-siliceous rocks,which dominantly deposited in the shallow outer continental shelf with relatively deep water. The average TOC of Dalong Formation is 6.03%,the average Ro is 2.29% to reach overmature stage and the organic matter includes sapro-humic and humic types. Quartz and clay are the major minerals in Dalong Formation with higher content of brittle content. The rock porosity is 1.45%~4.26%,which is considered as a low-porosity to ultra-low porosity reservoir. The permeability is 0.000 17×10-3~0.003 85×10-3μm2,which is classified as a ultra-low permeability reservoir. The average gas content of core samples is 3.76 m3/t according to the isothermal adsorption test and the corresponding shale gas potential resource is 1 654.8×108m3. The research on shale gas reservoir in Dalong Formation could provide certain reference for the subsequent Permian shale gas exploration and development in western Hubei Province.关键词
页岩气/地层特征/潜力评价/大隆组/鹤峰区块/鄂西地区Key words
shale gas/strata characteristic/potential evaluation/Dalong Formation/Hefeng/western Hubei Province分类
能源科技引用本文复制引用
许露露,刘早学,张焱林,邱艳生,段轲..鄂西鹤峰区块大隆组含页岩气地层潜力评价[J].特种油气藏,2018,25(2):13-18,6.基金项目
国家自然科学基金"页岩油储层储集空间定量表征及分级评价标准探讨——以江汉盆地为例"(41402122) （41402122）
