屈服带随出砂量的增加沿井径向外扩张。
Yield front propagates away from the wellbore with the process of sand production.
指井径仪测量的井眼直径与钻头尺寸之差。
The difference in the caliper-measured diameter of the well and the bit size.
在不同井径变换部位所产生的偏斜效果是不同的。
At different positions, changes in well dimension cause different deviation affects.
在井径不变、井壁光滑的井中测井，井眼影响容易校正。
In smooth boreholes of constant diameter, the effect of the borehole is well understood and can be corrected for.
感应测井中，由于井径变化引起测量电阻率突然变大的现象。
The effect of a sharp change in the borehole diameter, such as that caused by a cave or rugose hole, on an induction log.
井径测井主要用于确定套管内径变化、射孔孔深及接箍深度等。
Caliper logging is mainly used to determine the change of inside diameters of casings, perforating depth and the depth of collars.
课题研究的意义在于研制一种通过非接触方式测量井径的方法。
The significance of study on the subject is to develop a non-contact mode method of caliper logging.
介绍了36臂井径成像测井仪器、解释方法，并给出测井实例。
The article introduces logging instrument of 36-finger image caliper and interpretation method and also gives examples.
随着井径比的减小，本文解和以往的解得到的固结度差值变大。
The difference between the average degree calculated by the present solution and that by the previous solutions increases with the reduction in the radius ratio.
在声波测井中，井径的变化对声波测井数据的影响是不能忽略的。
The effect of hole diameter change on sound logging data should not be neglected in sound logging.
本文对比了有效井径模型、表皮效应模型及其压降解、样板曲线。
In this paper, a comparison of effective radius model and skin effect model as well as theirs pressure solutions and type curves are made.
文章介绍了32臂井径成像测井仪的结构、测量原理和技术特点。
Structure, measurement principle and technical features of the 32-finger imaging caliper logging unit were introduced in the paper.
井洞影响是井径变化致使阵列感应测井响应曲线出现异常的主要原因。
The cave effect is the main factor which results in the abnormity of array induction logging responses when the borehole irregularity exits.
井洞影响是井径变化致使阵列感应测井响应曲线出现异常的主要原因。
Way of the cave effect correction of array induction logging based on geometric factor;
针对声波测井中的薄层问题，设计了井径不变情况下的厚层夹薄层模型。
In view of acoustic log of thin bed, a thick bed clipping thin bed model of constant well diameter was designed.
最后，基于所有基础性的研究对非接触式超声波测量井径方法进行了实验。
At last, based on all fundamental researches, there is an experiment has been carry out for ultrasonic measure method.
经过改进的三臂井径测井仪器用3条臂的电位器串联来响应井眼内径的变化。
The modified logging tool with 3arm caliper responds to changes of hole inner diameter by serial potentiometers.
现场应用结果表明，该井井眼稳定，井径扩大率很小，有效地解决了井眼失稳问题。
The wellbore is effectively protected from sloughing with small enlargement rate because of applying these techniques.
该仪器由组合式井斜方位多功能测井仪和MSC-36多臂井径成像测井仪组合而成。
The tool consists of a Combined Inclination Azimuth Multi-function Logging Tool and a MSC 36-Arm Caliper Imaging Logging Tool.
试验井三叠系、石炭系平均井径扩大率小于6%，完井电测及下套管固井等作业顺利。
Hole enlargement through the Tertiary system and the Carboniferous system in test Wells are less than 6%, therefore, got a successful completion logging and running casing strings.
为了深入研究套损机理，减少油水井套管的损坏，提出了新的多臂井径测井解释方法。
In order to study the theory of casing damage and reduce the casing damage of oil-water Wells, a new log analysis method of multi-armed caliper log is expounded.
为了深入研究套损机理，减少油水井套管的损坏，提出了新的多臂井径测井解释方法。
The Casing Condition Logging and the Study of the Method to Detect the Casing Stress;
与常规的井径仪相比，新型的多臂井径仪测量得到的信息更全面，资料的成像处理效果更直观。
Compared with other conventional caliper meters, data recorded by the new multi-arm caliper tool are more comprehensive and the imaging effects are also more visible.
着重分析了LVDT传感技术在井径仪测量系统中的应用，简要介绍了该仪器的现场应用效果。
It analyzes particularly LVDT transducer technology used in the measuring system of caliper gauge and further demonstrates effect of the gauge.
重力测井具有探测范围大、受井径变化影响小、重复观测周期短、不受目的层埋深限制等优点。
Gravity log has such advantages as wide investigation range, small effect of caliper variation, short repeated observation cycle, no limit for depth of the interested zone.
井径测井信号数字化及处理系统是一套对下井仪器传送上来的测井信号进行采集并处理的系统。
The digital sampling and process system is used for digitizing and processing well logging signals that transmitted from the apparatus under the oil well.
考虑了单井径向流模型、垂直压裂模型及拟三维多井模型，并给出了相应的有限差分数值模型。
Moreover, single-well radial flow model, vertical stimulated fracturing model and quasi-3D multi-wells model are considered, and finite difference schemes for these models are formulated as well.
用此非线性方法对仪器刻度，使得国产连斜-井径并测仪的井径线性不好的问题得到了明显改善。
This nonlinear calibration method is used to calibrate the caliper tool, which obviously improves the measuring accuracy of the caliper tool made in China.
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。
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.
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