欠平衡钻井

欠平衡钻井井控与常规钻井井控差异及施工原则；

The difference of well control between UBD and conventional drilling ;

欠平衡钻井技术及其应用与发展

Applications and Development of UBD Techniques

RBF网络法在欠平衡钻井中的应用

The Application of RBF Neural Network in Under-balanced Drilling

实钻表明，新型PDC钻头复合钻井及欠平衡钻井技术是川西深井提速的关键，科学的组织管理是川西深井钻井提速的有力保障。

New PDC bit combined drilling and underbalanced drilling technique and the scientific management are the key of improving drilling rate in Chuanxi deep well .

因此，建议在欠平衡钻井设计中应用预测精度较高的Ansari方法。

So the Ansari Method is recommended to use in UBD design because of its higher prediction accuracy .

DF1井氮气泡沫欠平衡钻井实践与认识

Practice and Experience on Under-balanced Drilling with Nitrogen-foam

实体筛管完井技术在氮气钻井中的应用DF1井氮气泡沫欠平衡钻井实践与认识

Application of stuffed screen pipe completion technology in N_2 drilled wells Practice and Experience on Under-balanced Drilling with Nitrogen-foam

川西3000m以深井段普遍存在机械钻速慢、储层保护技术单一等问题，常规欠平衡钻井均不能很好地解决以上问题。

The traditional underbalanced drilling technology cannot solve the problems of the low penetration rate and simple reservoir protecting measures in the west Sichuan interval of more than 3000 m.

根据稳态的流动规律，分析H-K水动力学模型，研究欠平衡钻井稳态设计的压力计算模型。

According to the steady-state flow regular pattern , to analysis H-K hydrodynamic model , to collate pressure calculation model of under-balanced drilling steady-state design .

塔里木轮南奥陶系碳酸盐岩高压油气藏水平井及大斜度井欠平衡钻井技术

Under balance pressure drilling techniques of the horizontal well and high

四川油气田欠平衡钻井装备的研究与应用

Research and application of underbalanced drilling equipment in Sichuan Gas Field

井底压力温度测试技术在充气欠平衡钻井中的应用

Monitoring Bottom-Hole Pressure and Temperature in an Aerated Under-Balanced Drilling Well

欠平衡钻井井口回压控制操作方法及注意的问题；

The rig-site operation of wellhead back pressure and cautionary points ;

欠平衡钻井条件下钻井液的密度对中子孔隙度测井的影响

Effect of Drilling Fluid Density on Neutron Porosity in Underbalanced Drilling

欠平衡钻井条件下油气层判别方法研究

The method for distinguishing oil and gas zones for under-balanced drilling

欠平衡钻井技术在超高压地层中的研究与应用

Research and Application of Unbalanced Drilling in Abnormal High Pressure Formation

欠平衡钻井技术在煤层气勘探开发中的应用

Application of the Under-balance Drilling Technology in CBM Exploration and Development

欠平衡钻井多相流动循环系统分析

Analysis of the multiphase flow circulating system of underbalance pressure drilling

欠平衡钻井多相流模型评价分析

The evaluation of multiphase phase flow model in under balanced drilling

欠平衡钻井环空岩屑对井底负压的影响

Effect of annular cuttings on negative pressure in under-balanced drilling process

碳酸盐岩储层欠平衡钻井技术难点与对策碳酸亚乙烯酯的合成

Technical difficulties and Countermeasures of carbonate reservoir under - balance pressure drilling

欠平衡钻井工艺及装备在漏失井钻井中的应用

Applications of Underbalanced Drilling Techniques & Equipments in Lost Wells

欠平衡钻井液技术研究现状

Current Status of the Research on Drilling Fluids for UBD

欠平衡钻井用泥浆/气体分离器的定尺评估

Mud / gas separator sizing and evaluation in unbalanced drilling

塔河油田深井碳酸盐岩储层欠平衡钻井技术难点与对策

Challenges and Solutions of Underbalanced Drilling in Carbonate Reservoirs in Tahe Oilfield

但是，欠平衡钻井技术并非适用于所有的油气藏。

But , underbalanced drilling technology is not suitable for every reservoir .

欠平衡钻井井底岩石应力状态分析和破碎机理研究

Bottomhole Stress Analysis and Breaking Mechanism Research in Underbalanced Drilling

欠平衡钻井气液两相流动态模拟研究

Dynamic Simulation Study of Gas-Liquid Two-Phase Flow for Underbalanced Drilling

欠平衡钻井技术新分类与油藏筛选方法研究

Classifications of Underbalanced Drilling and Researches on Reservoir Screening Methodology

泡沫欠平衡钻井气液流量组合优选研究

Research on gas-liquid flow rate optimization in foam underbalanced drilling