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- gas content and permeability 含气性及渗透性
- Deep-hole presplitting explosion in coal seams with high gas content and low permeability was numerically simulated and analyzed. 摘要针对高瓦斯低透气性煤层,对深孔预裂爆破进行了数值模拟分析研究。
- coal seam with high gas content and low permeability 高瓦斯低透气性煤层
- The methods to calculate pressure,d rilling fluid density,gas content and solid content in borehole are given,and th eir distributions along the borehole are discussed. 给出了井眼中压力、钻井液密度、含气量和固体浓度的计算方法,并对它们的分布规律进行了研究。
- Herewith,the influence of the non-condensable gas content and the tube surface s degree of supercooling on condensation heat transfer were found for the two kinds of tubes. 获得了不凝性气体含量和壁面过冷度对光管和三维肋管凝结换热性能的影响规律。
- Factors such as buried depth,volatile matter of raw coal,water content and ash content in raw coal can produce influence upon gas content to some extent. 分析认为:研究区煤层气含量各煤层差异性较大,埋深、原煤挥发分、原煤水分、灰分产率等因素对煤层气含量均有一定的影响。
- A mathematical model between coalbed gas content and log responses to syncline in Huaibei Sunan region is setup ultilizing progressive regression analysis method. 利用逐步回归方法建立了淮北宿南向斜煤层气含量与测井响应值之间的数学模型;
- Cinder cone volcanoes are formed when magmas with high gas contents and high viscosity are blown high into the air during an eruption. 火山渣锥火山是,当爆发时,高气体含量和高粘度的熔岩被喷发到空气中而形成的。
- The book is rich in content and succinct in style. 这本书内容丰富,文字简练。
- They are rich in content and varied in style. 它们内容丰富,风格多样。
- Analyses the influence factors of seam gas in Shaqu coalfield,forecasts gas contents and sury capacity in coalfield, puts forward that it is very necessary to develop gas drew and used. 分析沙曲井田煤层气含量影响因素,根据瓦斯含量对矿井瓦斯涌出量进行了预测分析,提出开展瓦斯抽放与利用是十分必要的。
- This book is sound in content and lively in style. 这本书内容好,并且写得很生动。
- Also the porosity and permeability are both lower in Yijianfang Formation. 一间房组储层的孔隙度、渗透率均较低,其储渗空间具有非均质性。
- Dog was content and wagged his tail. 狗心满意足,摇着尾巴。
- Main content and adopting scope. 主要内容与使用范围。
- Label packages as to content and date. 包装后,贴上有含量和日期说明的标答。
- The programs are judged on content and skill. 节目根据动作内容和技术进行裁判。
- Proofread them for content and spelling. 就内容和拼写进行校对。
- Thickness of coal-bed, depth of imbedding, quantity of resource, gas content, permeability, stress of reservoir and wall rock conditions are defined as the seven indexes in this study. 选取煤层厚度、埋藏深度、资源量、含气量、渗透率、煤储层压力、围岩条件等7项指标作为盆地煤层气地质条件模糊评判的评价指标,构成模糊评价因素集。将其分为好、较好、一般、较差和差5个级别。
- Free content and services were a beguiling idea. 事实也告诉我们,光靠广告已经远远不够。