Analysis of hole undergauge and its preventive strategy;
井眼缩径分析与预防对策
The currently used methods for calculating gas injection rate during gas drilling all take the temperature of natural formation at the same depth as the temperature of the annulus fluid,without considering the heat exchange occurred between the wellbore fluid and the formation.
目前关于气体钻井时所需注气量的计算方法均是将环空流体的温度取同一深度的自然地层温度来进行计算,没有考虑井眼内流体与地层进行换热的影响,这必然会带来误差。
Results show that with the increase of eccentricity between reaming tool axes and well bore axes,or with the decreas.
为了解随钻扩眼工具在井眼内的运动状态和受力情况,促进钻井工具的优化设计和更合理的应用,对随钻扩眼工具在井眼内的运动进行了研究,给出了基于拉格朗日方程的动力学分析方法;基于法向接触约束的惩罚准则,计算了扩眼刀翼与岩石之间的接触力,对随钻扩眼工具在井眼内的运动过程和动力响应进行了动力学仿真研究。
This article introduces two techniques of determining the-directions of natural fractures:One is micro-fracturing and oriented coring,the other is measuring the elliptic axis of the well bore by dipmeter logging.
在裂缝性地层，效益最好的水平井，其水平井井眼应与天然裂缝面垂直，这样可大大减少油气渗流阻力，充分发挥各个裂缝面的最大泄油效能。
Improvement of Φ70 compensated density logging tool and its application to large borehole;
Φ70补偿密度测井仪的改进及在大井眼测井中的应用
In gas condensate well designs and dynamic analysis,borehole pressure and the distribution of temperature are two important parameters.
在凝析气井井眼流体相态理论的基础上 ,综合考虑压力、温度之间的相互影响 ,建立凝析气井井眼压力、温度耦合组分模型。
Shear failure is a basic failure mode of borehole rock.
井眼剪切破坏是井眼岩石基本破坏形式之一。
Analysis on the borehole effect characteristics on array induction logging in salty mud condition;
咸水泥浆井中的阵列感应测井井眼影响特性分析
At present, there are two methods (plate correction and autocorrection)to correct the borehole effect for the wireline logging data.
目前,对电缆测井资料的井眼影响校正主要有图版校正法和自动校正法,而对随钻电阻率测井资料的井眼影响校正国外三大测井公司多采用图版校正法。