石油和天然气钻井：12%。
石油和天然气钻井工人，服务人员，测试人员及有关人员。
Oil and gas well drillers, servicers, testers and related workers.
本实用新型可广泛用于石油、天然气钻井工程取岩心作业中。
The quick latch jack can be widely used in the coring operation in the oil and gas drilling engineering.
天然气钻井公司手里掌握着水样数据资料，研究人员可以用这些数据进行环境风险研究。
Gas Drilling Companies Hold Data Needed by Researchers to Assess Risk to Water quality.
厚板主要销售给欧洲客户用于造船，风力涡轮机，以及石油和天然气钻井平台。
Thick plates are sold mostly to European customers for shipbuilding, wind turbines, as well as oil and gas drilling platforms.
砂岩和石灰岩是石油天然气钻井破岩的主要对象，它的物理力学性质已有系统的测定方法和定量分级。
Sandstone and limestone are the main targets cut by oil and gas well drilling and for their physical mechanical property there have been systematic determination method and quantitative gradation.
在石油天然气钻井施工过程中，常常造成钻具接头磨损、偏磨及丝扣粘连，这是引起钻具损坏进而演化为井下事故的主要原因之一。
In the construction process of oil and gas drilling, the joint drill wear, eccentric wear and threaded partial adhesion caused drilling damage and then evolved into the major mine accidents.
在2006年5月29日，在印度尼西亚东爪哇的诗都阿佐(Sidoarjo)，滚烫的泥浆从一个天然气钻井附近地面喷涌而出，覆盖了附近农田和村庄。
On May 29, 2006, hot mud began to pour from the ground near a gas exploration well, covering fields and villages in the Sidoarjo region of East Java, Indonesia.
积极进行天然气钻探的钻井数量也几乎未发生变化。
The number of drill rigs actively drilling for gas has barely budged, though it has been down in the US three of the last four weeks.
积极进行天然气钻探的钻井数量也几乎未发生变化。
The number of drill rigs actively drilling for gas has barely budged, though it has been down in the US three of the last four weeks.
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