煤田地质与勘探2017，Vol.45Issue(5)：48-53,6.DOI:10.3969/j.issn.1001-1986.2017.05.009
延川南区块深层煤层气井产能主控因素
Research on key factors of CBM well productivity in deep strata in block of south Yanchuan
付玉通 1马健强 2李永臣 3许祖伟3
作者信息
- 1. 中国矿业大学资源与地球科学院,江苏徐州221116
- 2. 中石油煤层气有限责任公司,山西太原030000
- 3. 中石油煤层气有限责任公司,北京100028
- 折叠
摘要
Abstract
Unclear understanding on the factors influencing the productivity of deep buried CBM wells has restricted the commercial exploration.Firstly,the paper summarized the style and capacity of CBM production,then analyzed the factors influencing productivity from resource,difficulty of desorption and fluid condition.The results show that permeability and gas content are the major influence factors of productivity.The constant gas rate of flow is above 1 000 m3/d when the permeability is more than 0.3×10-3 μm2 and the gas content is more than 15 m3/t.Gas content is mainly influenced by depth and hydrodynamic condition,while permeability is mainly controlled by crustal stress,deformation and crack condition.Based on permeability and gas content,the block was divided into four parts and the productivity of each part was evaluated.The correlation between the productivity and fracturing operation parameters are poor,which revealed that the effect of different fracturing operation was basically the same in current technological level.关键词
深层煤层气/产能影响因素/渗透率/含气量Key words
CBM in deep strata/factors influencing the productivity/permeability/gas content分类
天文与地球科学引用本文复制引用
付玉通,马健强,李永臣,许祖伟..延川南区块深层煤层气井产能主控因素[J].煤田地质与勘探,2017,45(5):48-53,6.
