国家对煤矿井下作业的职工采取特殊保护措施。
The State shall take special protective measures for miners working in underground coal mines.
国家对煤矿井下作业的职工采取特殊保护措施。
The state shall adopt special protective measures for workers operating in the pit.
尤其适用于对径向尺寸有限制要求的油田井下作业。
Especially it is the same with borehole operation which is limited in radial dimension.
众所周知，井下作业人员工作服多以纯棉细帆布为主。
As everyone knows, underground work personnel's work clothes take cotton thin canvas as the core more.
目的了解煤矿井下作业噪声危害现状，探讨防治对策。
Noise hazard of coal mine operation is serious, and needs comprehensive control.
但系统地提高井下作业效果与效益的管理思路尚未形成。
But the improving effect and benefit of downhole operation have not formed yet.
原油开采过程主要分为勘探、钻井、采油、井下作业和输送。
Crude oil extraction process is mainly divided into exploration, drilling, production, and distribution of underground work.
通过工程实践证明：该方法精度可靠，能明显提高井下作业效率。
Engineering practice proves that the method is reliable in precision and is capable of improving underground working efficiency obviously.
在井下作业条件，服装与人体形成“微气候”中存在高温高湿状态。
In underground work terms, clothes and human body form "little climate" the high wet state of high temperature exists.
连续油管井下屈曲行为问题是连续油管井下作业成败的关键性问题。
The problem of the behaviors of coiled tubing down-hole buckling is the key of the success of coiled tubing down-hole operation.
地层破裂压力是钻井工程、井下作业及稠油油藏热力开采的重要参数。
Formation burst pressure is one of the key parameters for the thermal production of heavy oil, drilling engineering and downhole operation.
井下作业外部市场的开拓，对修井作业员工的素质提出了较高的要求。
Developing external markets in downhole service requires well workover operators' higher quality.
本文将从以下六个部分对中国井下作业企业国际化经营的交易情况进行研究和探讨。
The paper will analyze China's underground work companies'process of international transaction from six aspects.
在钻井、完井等井下作业过程中，造成油气层渗透率下降的现象通称为油气层损害。
The phenomenon of reservoir permeability decrease caused by drilling, completion and other underground operation is known as formation damage.
型井下不压井作业装置适用于机械采油或气举采油的深井和压力较高油井的井下作业。
Model ZY-I downhole service equipment is suitable fordeep wells where mechanical production or air-lift production is adopted and for high-pressure wells.
为了提高井下作业的效果，通过测试毛管渗吸时间来确定抑制黏土膨胀所需的盐浓度。
To improve well-operation performance, capillary suction-time testing was performed to determine salt concentration required to prevent clay swelling.
目的了解我省煤矿井下采掘作业地点气象条件现状，为井下作业人员职业防护提供依据。
Objective To understand the status of environmental meteorology in underground workplace of coal mine in our province.
阐述了质量风险管理的基本原理、技术，以及质量风险管理在井下作业开发过程中的应用。
Expounds the basic principle and technology of quality risk management as well as its application in the development of well operation.
如何提高作业一次合格率，减少返工作业是提高井下作业质量，提高经济效益的有效途径。
How to improve operation percent of pass, reducing do poorly done work over again to work is to improve quality of well dirty course of study, raise the efficient way of economic benefits.
实施井下作业成本核算不仅需要建立和完善内部管理制度，还要有必要的信息系统予以支撑。
Carrying out the cost calculation of underground activity not only needs to set up and perfect the inner management system but also needs information system to back it up.
随着油田的深入开发，井筒工具的大量使用，井下作业越来越复杂，该项打捞技术具有广阔的应用前景。
With the development of oilfield and a great use of well-bore tools, such fishing technology will have a wide prospect applied to the more and more complex conditions of down-hole operations.
地震发生后，这座距离震中大约15公里的煤矿，迅速将200余名井下作业矿工全部撤离，无人员伤亡。
After the earthquake, the epicenter about 15 kilometers away from the mine, quickly operating more than 200 miners were underground to evacuate all without casualties.
针对马蒂尔自移机尾装置在井下使用中出现的一些问题，对其局部结构进行了改造，以适应井下作业的需要。
In view of the problems occurred during underground application of Mattill self-advancing tail device, some structures of it is improved in order to satisfy the requirements for underground operation.
针对马蒂尔自移机尾装置在井下使用中出现的一些问题，对其局部结构进行了改造，以适应井下作业的需要。
In view of the problems occurred during underground application of Mattill self-advancing tail device, some structures of it is improved in order to satisfy the requirements for underground operation.
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