中国的大多数气藏属于低渗气藏。
Among the gas reservoirs found so far in China, most are low permeability reservoirs.
通过试验得出了渗气系数与渗透系数的相关关系。
Through the experiment we obtain the relationship between coefficient of air permeability and coefficient of water permeability.
用植绒PV C料经高频热压成型，倒阀门气嘴，具有双层防漏气渗气功能。
PVC flocking materials used by high-frequency hot press molding, gas valve back up, with both gas permeability and gas leak-proof function.
以某低渗气藏d 15井、DK13井为例介绍了该方法的操作步骤和实施效果。
The process steps and application effects of this method are described with well D15 and well DK13 of a low-permeability gas reservoir as the examples.
致密低渗气藏开发过程中储集层存在应力敏感，不同的试验方法评价结果差异很大。
There exist big differences in studied result with different test methods for dense reservoir rock in low permeability gas pool is sensitive to the stress.
文章建立了低渗气藏耦合流动数学模型，该模型考虑了非达西效应和介质变形因素的影响。
The mathematical model of coupled flow for low permeable gas reservoirs is set up in the article. The model considers the influence of non-Darcy flow effect and medium deformation.
针对鄂尔多斯塔巴庙区块低压低渗气藏物理特性复杂的情况，推荐一套切实可行的气层保护方案。
In accordance with the complex physical characteristics of the pressure and low permeability gas reservoir in Tabamiao block of Erdos, a set of practical and feasible protection plan is recommended.
结果表明影响低渗气藏的主要因素有应力作用、启动压力梯度、渗透率、滑脱效应、水锁效应等。
It is indicated that the main factors affecting low permeability gas reservoir are stress action, start-up pressure gradient, permeability, slippage effect, and water blocking effect etc.
因为液体是不可渗润进透气砖的，气相将“湿”在墙上，大气泡会形成。
Because the liquid is not wettable to the plug, the gas phase will 'wet' the wall and large bubbles will form.
水锁损害严重影响气藏开发效果，并成为低渗致密气藏的主要损害类型之一，对气藏的渗透能力造成严重的损害。
Results studied in worldwide have shown that the water block affects seriously development effects and becomes one type of the major damages for low permeability gas reservoirs.
介绍了渗氮、超低温处理、气相沉积、等离子改性以及复合表面处理技术等在切削刀具中的应用现状和发展趋势。
The status and development trend of surface treatments, such as nitriding, vapor deposition, plasma modification and multiplex surface treatment technology used for cutting tools were described.
川西须家河组2段气藏属于低渗低孔致密深层气藏，地层压力和破裂压力高。
Gas reservoir in Xujiahe Section 2 in west Sichuan are low porosity, low permeability, deep, high formation pore and fracture pressure, etc.
根据所采用渗碳钢的化学成分及渗件表面合联量，对炉气联势进行定量控制。
According to carburizing steel's chemical composition and ore's case carbon requirements, the carbon potential of furnace inside atmosphere is controlled quantitatively.
文88块是利用天然气驱开发的一个典型的异常高压低渗油藏。
Wen 88 block is a typical abnormal high pressure and low permeability oil reservoir, exploited by natural gas drive technique.
川西地区目前已投入开发的侏罗系气藏，大多属低渗致密砂岩气藏。
Most Jurassic gas pools in west Sichuan district that have been put into development currently, belong to low-permeable dense sandstone gas pool.
结合川西地区致密砂岩气藏低孔渗的地质特点，对复合技术进行了研究。
This article studies this composite technology by taking the geologic features of low porosity and low permeability of tight gas sands in West Sichuan.
综合评价，芭蕉场石炭系储层为为低孔、低渗、高含气饱和度储层。
It is considered that Baojiaochang Carboniferous reservoir is featured by low porosity, low permeability and high gas saturation based on the comprehensive evaluation.
长庆气田上古生界气藏属低压低渗储层。
The upper Paleozoic reservoir in Changqing gas-field is a low pressure and low permeability reservoir.
分析了国产削片刀失效的原因，试验了气相碳-氮-硼共渗新工艺，为提高国产刀片质量提供了必要的科学依据。
The causes of fracture of the chipper knives made in China are analysed. A new process on gaseous Carbon-Nitrogen-Boron penetration is tested and better results have been achieved.
有利烃源岩发育区控制天然气的平面分布，深层致密砂岩储层中发育的“有效储渗体”是天然气富集、高产的关键。
Distribution of favorable source rocks controls the planar distribution of gas reservoirs, and "effective reservoirs" in deep tight sands are the key to gas accumulation and production.
CVI（ 化学气相浸渗）反应器内气体的输运对基体的沉积速度与沉积质量有重要的影响。
The effect of fluid flow in the CVI reactors on the deposition velocity and quality is of great importance.
原料气和渗余气在壳程内流动，而管程内为渗透气。
The feed and nonpermeate outlet gas are on the "shell" side, and the permeate gas is on the "tube" side.
综合可知，利用灰色关联度分析法预测低渗砂岩气藏的水锁伤害是切实可行的。
Comprehensively, it is feasible to predict water block damages of low-permeability sandstone reservoirs by the grey correlation method.
大牛地气田具有低压、低渗、个别井段易漏和固井后易气窜的明显特点。
Daniudi gas field is characterized by low pressure, low permeability, being prone to leakage in some well intervals and being prone to gas channeling after cementing.
论述了致密砂岩气藏特低渗形成的原因：即先天的沉积因素和后天的成岩作用等。
This paper reviews the forming reasons of extremely low permeability of tight sandstone gas reservoir, including congenital aggradation and acquired diagenesis.
由于好的孔渗性砂岩油气田越来越少，致密砂岩气藏作为一种非常规气藏近年来逐渐成为勘探和开发的热点。
Porous-type sandstone reservoir is shorter and shorter and gas reservoir in tight sand is more and more important.
由于好的孔渗性砂岩油气田越来越少，致密砂岩气藏作为一种非常规气藏近年来逐渐成为勘探和开发的热点。
Porous-type sandstone reservoir is shorter and shorter and gas reservoir in tight sand is more and more important.
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