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- Coalbed methane is a natural gas resources adsorbed to the coal reservoir. 煤层气是一种以吸附态储集在煤层中的天然气资源。
- The result shows that the recovery condition of the CBM well will change with the change of the recovery system, and the permeability of coal reservoirs will also change. 研究结果表明,煤层气井工作制度的变化会引起煤层气井采动状况发生变化,导致煤储层渗透率产生波动。
- The incompressibility of water plays a role of supporting the cleats and pores of coalbed,making coal reservoir b... 水的不可压缩性对煤岩割理、孔隙起到了支撑作用,使煤岩储层能保持较高的渗透率。
- Porous characters of coal reservoirs in the Ordos Basin tested using the Micrometrics ASAP 2000 automatism isothermal adsorption instrument made in America. 利用美国Micromritcs ASAP 2000自动等温吸附仪,测试了鄂尔多斯盆地煤储层孔隙特征。
- Some kind of usual specific surface distribution curve and accumulative total porous volume distribution curve model of coal reservoirs in the basin are summarized in this paper. 总结了鄂尔多斯盆地煤储层几种常见的比表面积分布曲线及累计孔体积分布曲线模型。
- The diffusion of coalbed methane in coal reservoirs is defined that the main process of coalbed methane desorbed from coal matrix pore surface migrated to cleat system. 煤层气在煤储层中的扩散是指从煤基质孔隙表面上解吸的煤层气运移到割理系统的主要过程。
- Seeing from the petrophysics characters of coal reservoirs that formed in different deposit environments, the permeability of coal reservoirs are much better in deltaic deposit. 通过对含煤岩系沉积特征和古生物标志分析指出,该区含煤岩系是在稳定的地台构造背景上发育的一套海湾潮坪-三角洲充填沉积,从不同沉积环境条件下形成的煤储层岩石物理的特征看,三角洲沉积环境条件下形成的煤储层渗透性比较好。
- The coal reservoir's permeability is one of the most important parameters in controlling CBM exploration. 摘要煤储层的渗透性是控制煤层气开采的主要储层参数之一。
- Coal matrixflexibility energy decreased with the increasing of buried deepness of coal reservoir, and increased with the rising of coal rank. 煤基块弹性能随着煤储层埋深的增加而降低,随着煤级的升高而增大。
- The incompressibility of water plays a role of supporting the cleats and pores of coalbed,making coal reservoir be abl... 水的不可压缩性对煤岩割理、孔隙起到了支撑作用,使煤岩储层能保持较高的渗透率。
- The natural gas originated from oil and coal reservoir formations mainly, a little from biogenic gas and deep gas reservoir formations. 研究区内天然气以油型气和煤成气为主,含少量生物成因气和深部气。
- Coal matrix flexibility energy decreased with the increasing of buried deepness of coal reservoir, and increased with the rising of coal rank. 煤基块弹性能随着煤储层埋深的增加而降低,随着煤级的升高而增大。
- Abstract Under the action of coalbed water pressure,a certain quantity of gas is trapped in coal reservoir,forming coalbed gas reservoir. 在煤层水压力作用下,煤岩储层中“圈闭”了一定数量的气体从而形成煤层气藏。
- The study methods for coal reservoir fissures are analyzed from the view I)oint of coal petrology,and the deft nitions related to the fissures are presented. 从煤岩学的角度,对煤储层裂隙的研究方法进行辩析,提出有关裂隙的定义。
- Based on the study of pilot areas of Liulin and Anyang in No rth China,the coal reservoir permeability and main geological controlling factors deeply researched. 以华北地区柳林和安阳试验区为例,综合多种统计数据和测试成果,对煤层的渗透性及主要地质控制因素进行深入研究和探讨。
- The permeability of high rank coal reservoirs tends to decline in exponent gradually, which is similar to the relationship between the permeability and effective stress obtained by physical simulation. 煤储层渗透率随著煤层气井排采时间呈指数规律缓慢衰减,与物理模拟实验结果显示的渗透率与有效应力的关系具有相似的结论。
- Two patterns of reformed coal reservoirs in reformed coal basins, the reformation of coal structure and reformed fracture by aposedimentary fillings and forming of the fillings are introduced. 阐述了改造型含煤盆地煤储层被改造的两种形式;煤体结构的改造及构造煤的形成原因;后生充填物对煤层孔隙的改造及形成原因。
- The adsorption/desorption properties of CBM in high-and low-ranks coals, controlled by the physical proqerties of coal reservoirs, are quite different. 高、低煤阶煤层气藏吸附、解吸特征受煤储层物性差异的控制,呈现出显著差别,目前这方面的研究还基本上处于空白。
- The coal facies might indirectly control the petrophysical properties as adsorption, desorption and permability of the coal reservoir through directly controlling its pore system differential development. 煤相通过对该盆地高煤级煤储层孔隙系统差异发育的直接控制而间接控制了储层吸附、解吸及渗流物性的优劣。
- Sensitivity to damages and non-recoverability of coal reservoir determines that measures should be taken to protect the system in the process of well drilling, completion and production. 煤储层具有伤害的敏感性与不可恢复性决定了在煤层气钻完井、开采过程中要坚持采取系统的保护煤层措施。