There is little mobility for supervisors from well services to well drilling.

油井钻探和油井服务主管之间几乎没有流动性。

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Equipped with suitable derrick and well controlled device in drilling a shallow gas well water drills proved to be able to reduce shallow gas well drilling cost.

通过某浅层气井的施工实例，阐述了水井钻机安装合适的钻塔底座和并控装置，可降低浅层气井建井成本。

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But because Bonnie relatively weak, Allen expects the work stoppage to be brief-though it will take longer to get the relief well drilling RIGS back and ready to work.

但是鉴于邦妮事实上强度很弱，艾伦期望迁移工作可以停止，尽管减压井重新恢复工作还需要很长时间。

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The BP company pumped heavy drilling fluids,known as mud, into the top of its damaged well in the Gulf of Mexico.

VOA: special.2010.08.07

Workers are drilling two relief wells in an effort to ease pressure on the damaged well.

VOA: special.2010.06.04

State investigators found Cabot's drilling had caused gas to migrate into her well.

VOA: standard.2010.01.02

This month, Black Elk began work on a 23-well drilling program in the Gulf of Mexico.

FORBES: Oil Rig Explodes In Gulf Of Mexico, Killing Two

There is a surprising amount of research and development behind well drilling.

FORBES: Magazine Article

Onshore production means all well drilling and other equipment used in the onshore production, extraction, recovery, lifting, stabilization, separation or treating of petroleum and natural gas (including condensate).

FORBES: Just Tell the "Fracking" Truth