Mr. Howarth included methane losses associated with flow-back and drill-out processes in hydraulic fracturing and other unconventional gas drilling techniques.

霍沃斯先生将在水力压裂法和其它非传统天然气开采技术中返排和钻出过程中所泄露的甲烷包含在了其计算中。

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The sticking steel is one common trouble of drilling equipment and an important cause effecting the high efficiency and high quality drilling of hydraulic drill.

卡杆现象是穿孔设备常见的故障之一，是影响液压凿岩钻机高效率、高质量穿孔的重要原因。

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Core drill machines can be powered by electric hydraulic or air power sources.

核心动力的电动钻机器能、水力和空气动力来源。

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Cuomo said late Monday that he hasn't given a deadline for the state health and environmental conservation commissioners he appointed to advise him on a decision on whether to drill for gas using hydraulic fracturing, or fracking, which injects a mix of water and chemicals thousands of feet underground to crack open shale and release natural gas.

WSJ: NY senators seek fracking delay to await key study

If environmental paranoiacs can convince politicians to limit or ban the use of controversial hydraulic fracturing techniques required to drill up shale plays, then those excess gas supplies could quickly disappear and prices would soar.

FORBES: To Import Less Oil, U.S. Must Export More Gas

And the main way they do it is through what they call hydraulic fracturing, which after they drill the well bore, they perforate it.

NPR: Drilling for Gas in Dallas-Fort Worth