煤层甲烷含量

测井解释煤层甲烷含量与煤层结构的研究

Study on the coalbed methane content and coalbed structure interpreted by log curves

中国煤层甲烷含量及分布特征

Coalbed Methane Content and Its Distributing Characters in China

钻孔分布特征对煤层甲烷含量的影响

Characteristics of Borehole Distribution and Its Effect to Methane Content in Coal Bed

焦作矿区山西组二1煤层甲烷含量高，这在华北地区较为典型。

No. ⅱ 1 seam of Shanxi Group in Jiaozuo Mine Area has high content methane , which is typical in north China .

编制的煤层甲烷含量图应采取含量&深度关系趋势图这一间接的表现形式，所用甲烷含量的基态为可燃基。

An indirect expression form of content vs depth relationship should be adopted for making up the coalbed methane content graph and the ground state of the methane content utilized is a combustible radicle .

但在远离张性断层面的两侧，一般形成两个对称的平行条带状构造应力高压区，使得煤层甲烷含量相对升高，成为阻止煤层甲烷进一步向断层运移的天然屏障。

Symmetric high stress zones in parallel stripped shape would usually form in two sides far off the fault , thus causing the increase of coal bed methane content , and forming a natural curtain to block methane migration to the fault .

据勘探钻孔和矿井生产提供的气源量分析测试成果显示，煤层气中甲烷含量极为丰富。

According to the analysis and test of the gas from exploration drilling hole and well production , the methane content in the seam gas is very plentiful .

这种二次成气或叠加成气作用可以增加浅煤层中煤层甲烷的绝对含量，相应提高煤层甲烷的勘探成功率；

The absolute content of coal bed methane in the shallow coal bed can be increased by secondary or superposition gas generation , thus raising the success ratio of exploration for coal bed methane ;

13-1煤层顶板裂隙的发育程度对其下伏煤层甲烷含量会产生一定的影响。

The development of roof cranny is a key geological factor , which has influence on underlying methane content of seam roof .

着重分析了项板岩性及组合特征，并计算了砂岩厚度在煤层之上20m范围内所占的比例，讨论了各类型顶板对其下伏煤层甲烷含量的影响。

The roof lithology and its combinatorial relation are mainly analyzed , on the top of coal-bed , the sandstone percentage is calculated in 20m , and each roof and its effect to underlying methane content of seam roof are discussed .

通过对我国煤田勘探阶段以及近年来煤层气测试井或开发井获得的解吸气含量资料的分析研究认为：我国煤层甲烷含量分布大致呈现出南高北低、东高西低的特征。

According to obtained desorption methane content analysis from domestic coalfield exploration and coalbed gas test wells and development wells in recent years , this paper suggests that the distribution of coalbed methane content are of characteristics of the south-high and north-low , the east-high and west-low in China .