In workover operations, well control is the key to ensuring the normal operation.
在修井作业中，井控是确保作业正常进行的关键。
In workover operation, it was very difficult to carry out "Well control" owing to tubing string's being seriously corroded, bored and ruptured.
气井修井作业中，常常遇到油管柱断掉、穿孔、腐蚀等严重问题，使修井作业中“压井”非常困难。
While the working properties of workover rig are discussed in this paper, it is pointed out that the high rate of workover operation comes more and most into prominence.
文章讨论修井机工作特点时指出，提高修井速度是修井机主要工况。
To solve the pollution problem of dropping crude during field workover operation, a type of blowout controlling unit was researched and manufactured without the prerequisite of well control.
为解决油田修井作业落地油污染问题，研制出一种在不压井的前提下进行作业的防喷作业机。
The mechanization and automation status of domestic and international workover wellhead operation equipments are analyzed, and the application status and limitation of them are introduced.
根据修井井口作业工序和现场实际情况，总结出实现井口操作机械化的关键技术。
The knowledge of workover well control theory and operating skills of a staff is a strong guarantee, which premises a safe and smooth operation of well control.
修井员工的井控理论知识和操作技能是在安全、顺利的前提下进行井控操作的有力保证。
The course design for workover of sidetracking well is studied, including course target, azimuth, profile and well bore parameter calculation, thus providing reference to field operation.
针对侧斜井的特点，研究了侧斜修井的轨道设计技术，包括轨道靶区、方位、剖面设计和井身参数计算，为现场施工提供了依据。
Based on theoretical mechanics and stability theory, the paper analyzes the stability in preventing rollover and rear-tipping during the operation of vehicle-mounted workover rig without guy wire.
基于理论力学和稳定性理论，分析了车载无绷绳修井机作业时侧翻和后倾翻的稳定性。
These risks centralize mainly in drilling and completion operation ( inclusion workover ).
这些风险又主要集中在钻、完井（ 包括修井） 两个主要环节上。
The mechanical sand-bailing technology makes sand-washing operation more efficient. It can remove sand pinnacle completely and raise workover benefit.
为了解决上述问题，采用机械捞砂工艺技术，可以达到完全清出井内砂柱以及提高修井施工效益的目的。
The models developed in this paper can be used for the theoretical design of foam underbalanced drilling and workover and for the optimization of the operation parameters.
本文建立的模型可以用于泡沫欠平衡钻井修井理论设计、施工参数优化。
But some workover tools can't meet the needs of operation quality and safe.
但某些工具在施工中不能完全满足施工质量和施工安全的要求。
Preventing blowout needs risk evaluation for workover blowout before operation, we could make different measurements due to risk evaluation in different oilfield.
防止修井井喷需要修井前对井喷风险进行评价，针对不同风险井区采用不同修井措施。
Preventing blowout needs risk evaluation for workover blowout before operation, we could make different measurements due to risk evaluation in different oilfield.
防止修井井喷需要修井前对井喷风险进行评价，针对不同风险井区采用不同修井措施。
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