對於低壓低滲氣藏，能否減少外來液體侵入儲層、加快壓裂液返排、提高返排率。 將直接影響壓後的單井產量。 For fracturing job in low-pressure and tight gas reservoir, it is vital to reduce invasion by fluids and improve fluid flowing back, which directly affect the individual-well producing rate.
所述上部件可連接到下部件，以形成氣密的內部。 The upper part can be connected to the lower part in order to form a gas-tight interior.
水鎖效應、應力敏感、水敏性、鑽井施工作業不適當是低滲緻密氣層損害的主要因素。 For low-permeability and tight gas reservoir, major factors of causing damage are water retention effect, stress sensitivity, water sensitivity, drilling operation inadequacy.
管道銜接後，要中止8一10個大氣壓的水壓實驗或中止8一10個大氣壓的氣密性實驗，檢查其焊縫和接合處有無透露氣發作。 Pipe, are to stop after cohesion 8 a 10 atmospheres of pressure or suspend the 8 a 10 gas-tight test of the atmospheric pressure, checking the welds and joint have revealed that gas attack.
最後總結了現有方法的特點，給出了緻密含氣砂岩測井解釋的建議。 At last, the characteristic of present methods is summarized and some suggestions for well logging interpretation of gas-bearing tight sandstone are proposed.
不漏氣的密封形成在管接口和閥門排氣口座之間，在它們接觸的一個非常小的接觸圓周處。 The gas-tight seal takes place between the nipple and the valve outlet seat at a very small contact circle where they touch.
這種裝置結合一個平面螺紋接頭和纖維墊圈，用於製造氣密密封。 This fitting incorporates a flat nipple and fiber washer for making the gas-tight seal.
通過這種方法，從葉岩、煤炭以及其他滲透性差的地質構造中提取的天然氣，更容易也更便宜。 This has made it much easier and cheaper to extract gas from shale, coal and other less permeable geological formations (which yield so-called “tight gas”).
SOFC製備的關鍵技術之一是獲得足夠薄且不透氣的YSZ電解質薄膜。 The preparation of high quality YSZ electrolyte film, thin but gas-tight, on porous cathode or anode is crucial to the fabrication of SOFC.
四種成岩相組成了四種不同的儲層類型，儲層性質的對比分析對識別緻密氣層中的油氣產層具有重要意義。 Correlations of reservoir properties wtih sedimentary and diagenetic facies are of great importance to the exploration and development of tight gas-bearing formations.
人們認為近半的天然氣存儲在葉岩中，其他則來自煤床的甲烷和密氣。 Almost half of it is thought to be in shale; the rest comes from coal-bed methane and tight gas.
計算表明，在W波段，這種窗仍然性能優良。此外，較厚的窗片更容易保證氣密。 The computer simulation also demonstrates that the new window works well in W-band, and its thicker window ceramics makes it easier to be gas-tight.
以煤氣作為燃料的大的球形的或橢圓形的大桶。以作為結果，導致。 A large gas-tight spherical or cylindrical tank for holding gas to be used as fuel .
它具有良好的氣密性、隔熱性、阻燃性等性能，受到世界各國的普遍重視。 It has a good gas-tight, insulated and fire-retardant properties, etc. , are common to all countries in the world.
該多用途可充氣風箏包括由不透氣材料形成的具有氣密性填 充內腔的本體。 The multi-purpose inflatable kite includes a body formed of a gas-impervious material with a gas-tight fillable interior chamber.
水鎖損害是低滲透緻密氣藏的主要損害類型，嚴重影響了氣藏開發效果。 As the main damage of low-permeability tight gas reservoirs, water blocking damage seriously influences the results of gas reservoirs development.
另外，埋深較大的侏羅系及三疊系中與烴源岩互層或很近的砂岩中存在規模很大的緻密砂岩氣藏； Besides, there are large scale of tight sandstone gas-reservoirs occurred in sandstone formations which are interbedded or nearly the hydrocarbon source rock of deep buried Triassic and Jurassic.
高防水，高氣密，高強度的新型鋁窗，更多顏色，更多選擇。 High waterproof, high gas-tight, a new type of high-strength aluminum, more colors, more choices.
這種裝置結合一個平面螺紋接頭和纖維墊圈，用於製造氣密密封。 For cylinders. This fitting incorporates a flat nipple and fiber washer for making the gas-tight seal.
深部氣層和干層的區分是常規測井解釋的難題。 It's difficult to make a distinction between deep gas-bearing and tight formations with conventional method.
最後總結了現有方法的特點，給出了緻密含氣砂岩測井解釋的建議。 At last, the characteristic of present methods is summarized and some suggestions for well logging interpretation of gas-bearing tight sandstone are pr…
邊緣密封必須作出相應不透氣。 The edge seal must be made accordingly gas-tight.