tight gas

基本解释

Tight gas wells are generally characterized by low porosity, low permeability and high water saturation.
致密气井普遍具有低孔、低渗、高含水饱和度的特点。
Correlations of reservoir properties wtih sedimentary and diagenetic facies are of great importance to the exploration and development of tight gas-bearing formations.
四种成岩相组成了四种不同的储层类型，储层性质的对比分析对识别致密气层中的油气产层具有重要意义。
For low-permeability and tight gas reservoir, major factors of causing damage are water retention effect, stress sensitivity, water sensitivity, drilling operation inadequacy.
水锁效应、应力敏感、水敏性、钻井施工作业不适当是低渗致密气层损害的主要因素。

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.
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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).
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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.
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