1.
Improving the penetrability of soft coal seam with self-excited oscillation water jet
自激振荡射流改善松软煤层渗透率的机理
2.
According to the criteria, natural fracture zones of No.3 coal seam are divided into four grades and then the permeability distribution of No.3 coal seam is preestimated.
依据该标准将3号煤层天然裂隙划分为4级发育区，进而预测出3号煤层渗透率的分布概况。
3.
An inversive research method was proposed through analyzing the complicated changing features of permeability of coal seam and the problems existing in actual measurement.
分析了煤层渗透率的复杂变化特点和实际测量上存在的问题，提出其反演方法。
4.
The Research on Geology Process Simulation of Permeability Evolution in the Coal Reservoirs;
煤层气储层渗透率演化过程模拟研究
5.
The relationship between the permeability of coal bed and production curve about coal-bed methane vertical wells
煤储层渗透率与煤层气垂直井排采曲线关系
6.
Research on Development Mechanism of Coal Seam Permeability Based on Coal Evolution Degree
基于煤演化程度的煤储层渗透率发育机理初探
7.
Model Study on CBM Well Drainage Induced Changes in Permeability
煤层气井排采诱导渗透率变化模型研究
8.
Dynamic variation character of coal bed methane reservoir permeability during depletion
开发过程中煤储层渗透率动态变化特征
9.
Experiment and mechanism for enhancing coalbed penetrating coefficient with ultrasonic vibration
声震法提高煤储层渗透率的实验与机理
10.
Effects of Coal-Bed Geometric Parameters and Permeability on Horizontal Well Production in Coalbed Methane Reservoir
煤层几何参数和渗透率对水平井开采煤层气的影响
11.
permeability microstratification
渗透率微观分层现象
12.
permeability stratification
渗透率成层非均质性
13.
low permeability contrast reservior
渗透率差异小的储层
14.
The results show that PSW can increase pore volume of coal and can enhance permeability of coalbed methane (CBM) in coal.
结果表明 ,功率声波能够增加煤的孔隙体积 ,提高甲烷在煤层中的渗透率 ;
15.
Study on Mechanism of Injection Heat Increasing Production in Coal-bed Gas of Low Permeability Coal Seam
低渗透煤层煤层气注热增产机理的研究
16.
THEORETICAL ANALYSIS AND EXPERIMENTAL STUDY ON PERMEABILITY OF GAS-BEARING COAL
含瓦斯煤渗透率理论分析与试验研究
17.
The effects of stress on fracture and permeability in coal bed
应力对煤岩裂缝宽度及渗透率的影响
18.
The Theory and Its Application on Gas Drainage in Low-Permeability Coal Seams;
低渗透煤层瓦斯抽放理论与应用研究