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- Does Underbalanced Drilling Really add Reserves? 欠平衡钻井是否能增加储量?
- Underbalanced drilling increases deliverability form gas storage wells. 采用欠平衡钻井增加油气贮备井的开采量。
- Underbalanced drilling technology can increase ROP and decrease formation damage,so it is increasingly used worldwide. 欠平衡钻井技术可以降低地层损害、提高机械钻速,所以在世界范围内被逐渐采用。
- This is unprecedented in China that UBD (underbalanced drilling) technique with foam was applied in horizontal well. 将欠平衡钻井、水平井钻井技术两种工艺相结合并且成功应用在牛102井。
- Rotating Control Head(RCH)is a critical equipment used for underbalanced drilling technology. 现国内各大油田使用的旋转控制头均是从国外引进 ,价格昂贵。
- Using this method,we can carry out feasibility analysis and determine the differential pressure in underbalanced drilling. 利用本文方法,可进行欠平衡钻井可行性分析以及欠平衡钻井压差确定。
- In the long term, it is necessary to develop logging equipment and software adapted to the underbalanced drilling technology. 从长远看，发展适应欠平衡钻井工艺的录井设备和软件体系是非常必要的；
- Diesel engine tail gas drilling is a kind of gas-based underbalanced drilling, with advantages of protecting oil/gas reservoirs and improving ROP. 柴油机尾气负压钻井属气基欠平衡钻井,具有保护油气层和提高钻井速度等优点,但柴油机尾气成分复杂对石油管材可产生不同程度的腐蚀。
- The formula, properties and applications of cyclable foam drilling &completion fluids in underbalanced drilling in Luo 151 11 Well are introduced. 介绍了可循环泡沫钻井完井液的配方、性能及在罗151-11井欠平衡压力钻井中的应用情况。
- Meanwhile, the gas-liquid ratio for foam drilling or gas-filled underbalanced drilling in normal pressure formations is analyzed. 同时分析了在常压地层进行泡沫或充气欠平衡压力钻井时所需的气液比。
- In recent years, with the extensive application of underbalanced drilling technology and exploitation of depleted reservoir, snubbing operation became more and more general. 近年来随着欠平衡钻井技术的广泛应用和老井不断挖潜、开发,不压井起下钻作业的应用也越来越广泛。
- When underbalanced drilling or drilling easy leaky zone by using aeration fluid,the determination of fluid density and downhole fluid column pressure is very important. 利用气体型流体进行欠平衡钻井,或钻易漏地层时,流体密度及井下液柱压力的确定十分重要。
- 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。
- This problem is solved successfully after the underbalanced drilling (UBD) technique is taken.It is helpful to increase the production rate and expand the exploratory area. 近两年该地区应用了欠平衡压力钻井技术后,较好地解决了上述难题，为增储上产、扩大勘探区域起了积极的作用。
- Battery-solution proportional throttle well control system not only can be used in well killing but also can be used in wellhead pressure control of underbalanced drilling. 摘要电液比例节流井控系统不仅可用于一般钻井溢流压井，也可用于欠平衡钻井井口回压控制。
- The results indicate that underbalanced drilling is adynamic process and each relevant parameter in underbalaned drilling practice completely depends on the given conditions and thepractical operating mode. 研究表明：欠平衡钻井是一个复杂的动态过程，其实际控制规律完全取决于具体的钻井条件和相应的工况状态。
- Well Ma-5 is the first underbalance well. Combined with the actual drilling situation of Well Ma-5,this paper introduces preparing work of underbalanced drilling in detail, underbalanced drilling technology and snubbing trip technology. 麻 5井是麻柳场构造上的第一口欠平衡钻进井 ,结合麻 5井实际钻井情况详细介绍了实施欠平衡钻井的准备工作、钻井工艺技术、起下钻工艺技术 ;
- Based on the theory of elasticity and molar-Coulomb strength failure criterion, we proposed the prediction method for hole enlargement ratio in the condition of underbalanced drilling. 摘要基于弹性力学理论及岩石摩尔-库仑强度破坏准则，提出了欠平衡钻井条件下井径扩大率的预测方法。
- Based on the theory of elasticity and molar-Coulomb strength failure criterion,we proposed the prediction method for hole enlargement ratio in the condition of underbalanced drilling. 基于弹性力学理论及岩石摩尔-库仑强度破坏准则,提出了欠平衡钻井条件下井径扩大率的预测方法。
- With the research and application of the underbalanced drilling(UBD) technology,it is demanded to maintain downhole underbalanced conditions from drilling into the reservoir to completion. 随着欠平衡钻井技术的深入研究和推广应用,全过程欠平衡钻井技术已成为研究热点。
