Evaluation of the service life of a rotary drilling line is of great importance to ensuring safe drilling and reducing drilling cost.
钢丝绳使用寿命评定对确保钻井安全与降低钻井成本具有十分重要的意义。
It is very important for improving drilling rate, reducing drilling cost and safety drilling to carry out drill stem failure analysis and prevention.
开展油田钻柱失效分析与预防对提高钻井速度、降低钻井成本及井下安全钻进具有重要意义。
Required by geology or reducing drilling cost by using wells drilled, 3D sidetracking wells are getting more and more, 3D sidetracking wells are increasingly important in oilfield development.
地质要求或利用已钻井眼降低钻井成本，使三维侧钻井不断增多，三维大斜度侧钻井在油田开发中越来越重要。
The study results have the guiding significance in improving the safety of offshore drilling operations further, utilizing the existing equipment rationally and reducing the operation cost.
这些研究成果对于进一步提高海上钻井作业的安全性以及合理使用现有设备和降低成本均具有一定的指导意义。
The research cutting window sidetrack drilling cementing quality has important significance for improving oil development result, extending the production life of oil well and reducing the cost.
研究开窗侧钻井固井质量，对提高油气开发效果、延长油井的使用寿命、降低成本，具有重要意义。
The advantages of the slim hole such as reducing cost of drilling, eliminating the risk of the exploration as well as being beneficial to the environment has caught oil field's attention.
小井眼具有可降低钻井成本，减小勘探风险，有利于环保倍受石油界广泛重视。
Replacing diesel by diesel-natural gas as the fuel for drilling engine unit in natural gas field is one of the effective ways for improving economic benefit and reducing development cost.
天然气气田钻井发动机机组燃料由柴油改为柴油-天然气双燃料，是提高经济效益、降低开发成本的有效途径之一。
Replacing diesel by diesel-natural gas as the fuel for drilling engine unit in natural gas field is one of the effective ways for improving economic benefit and reducing development cost.
天然气气田钻井发动机机组燃料由柴油改为柴油-天然气双燃料，是提高经济效益、降低开发成本的有效途径之一。
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