Experiments were carried out on tight gas formation core sample with a water base crosslinked gel fracturing fluid.

在室内用水基冻胶压裂液浸入致密气层岩心，进行了伤害试验研究。

youdao

All together in 2010, Shell has added some 1.3 million acres (5, 250 square kilometers) of North America tight gas acreage.

2010年，壳牌在北美的致密气藏的面积总共增加了大约130万英亩(约合5250平方公里)。

youdao

Shell and PetroChina, a subsidiary of CNPC, already operate a gas field in the Changbei tight gas field in China's Shaanxi province.

中石油是中国石油的子公司。壳牌与中石油已经在运营位于中国陕西省的长北致密气田。

youdao

These are gas-tight feedthroughs.

这些是封闭的的引线。

麻省理工公开课 - 固态化学导论课程节选

The Energy Information Administration (EIA) puts it at around 37tcm of recoverable reserves, two-thirds of which is shale gas and the rest tight gas and coal-bed methane.

ECONOMIST: Shale gas is giving a big boost to America��s economy

Hydraulic fracturing pumps many thousands of gallons of mainly water and sand, with a few chemicals, at high pressure into tight gas-bearing shale deposits (hardened muds), creating cracks that allow gas to flow back up the well to the surface ( Shale Shock).

FORBES: The Fracking Solution Is A Good Cement Job

Fracking, of course, is the controversial method by which producers extract tight oil and gas a process that uses a concoction of water, sand and chemicals to break those deposits free from the rocks where they rest a mile beneath the ground.

FORBES: California's Clash: Shale Oil or Green Energy