井斜角

扭矩使钻柱的屈曲载荷明显降低，并且随井斜角的增大，降低的幅度减小；

However , torque can reduce the bulking load of drill pipes greatly , and the degree of reduction goes down with increase of well inclination angle .

通过计算结果，分析了降斜、增斜和稳斜三种典型钻具组合的钻头侧向力与钻压、井斜角、井斜曲率和方位曲率的关系，以及典型的钻柱弹性线示例。

Through the computing results , the relationships between side forces at the bit and weight on bit , wellbore inclination angle , inclination curvature and azimuth curvature , and the typical elastic lines for typical drop , build and hold BHA were analyzed .

利用6种类型IPR方程，对文献[1]油藏模拟器生成数据进行了重新拟合，得出不同IPR方程在不同井斜角下的Vogel参数值。

The Vogel parameter values of different inclinations in different IPR equations are given by using six types of IPR equations and re-matching the generated data from the reservoir simulator of Literature [ 1 ] .

利用该修正IPR方程，推导了含水油井综合IPR曲线的计算公式，可用于不同井斜角油井含水后的产能预测和举升工艺设计。

IPR equation used in water cut oil wells are derived further using the same technique , and this equation can be used in the forecast of productivity of a well when water appears in the production wells as well as in the design of artificial lift technology .

该自动垂直钻井工具包含井下微处理器、井斜角测量传感器及井下可控稳定器等。

The tool comprises a microprocessor , an inclination sensor and a controlled stabilizer .

随井斜角增加，悬浮层颗粒浓度减小；

With the increase of hole inclination , the concentration of fines in suspension layer decreases ;

随钻测斜仪的主要作用是完成井斜角、方位角、工具面角等参数的测量。

The main function of the inclinometer is to measure the angle of inclination 、 azimuth and tool face angle .

文中对一些典型的钻柱进行计算。给出了在特定钻压下出现屈曲的临界井斜角。

The critical deviated angles are calculated , which indicate the possibilities of buckling under some classical drill pipe , given axial loads .

讨论了井斜角、环空间隙、管柱长度和摩擦系数对连续油管在水平井中稳定性的影响。

The effects of deviation angle , annular tolerance , tubing length and friction factors on the stability of tubing in horizontal well are discussed .

定量分析了井斜角、渗透率非均质性和各向异性对水平井流入动态及流量/压力剖面的影响。

The effects of deviation angle , heterogeneity and anisotropy on the inflow performance andflow / pressure profiles of horizontal wells are studied quantitatively . 5 .

在此基础上，通过算例分析，阐明了钻压、井斜角、井眼曲率及稳定器间隙对钻头侧向力的影响规律。

The factors , such as WOB , deviation angle , hole curvature and clearance between stabilizer and wellbore , effecting bit side force have been discussed .

在一次测量过程中，两组测量单元可以测出各自所在位置的井斜角和相对扭转角，由此可计算出两个单元之间的方位角变化。

The azimuth angle change between the two units can be calculated by once operation according to the deviation angles and relative torsion angles measured with the units at each point .

根据实验需要建立一套室内的注水泥顶替效率模拟实验装置，该实验装置可调整的功能较多，可扩展性强，能够用于不同井斜角下的流动实验研究。

A set of indoor displacement-efficiency-simulating-apparatus is established , which is easy to be adjusted in many features and can be used to study the flow conditions under the different deviation .

以电磁场理论为基础，通过对双感应测井曲线响应方法的研究，制作了不同井斜角、不同围岩电阻率情况下双感应曲线围岩校正图版。

Based on the theory of electromagnetic field , we studied responses of dual induction logging , and made shoulder bed effect correction charts in different hole deviation angles and different resistivity values .

随着井斜角的增大，沉降失重对水泥浆转化期失重的影响增大，沉降&胶凝失重的影响减小；

Along with the increase in hole deviation angle the effect of the setting weightlessness on the slurry weightlessness during the transformation period increases and the effect of the settling jellification weightlessness decreases ;

井斜对钻具的影响有关理论已经证明，如果井斜角大于某一临界值，在狗腿处旋转钻杆将会引起严重的疲劳破坏。

The related theory that the drilling tool is affected by the inclination of the well had proved the fact : if the angle of the well is greater than a threshold , there will be se .

首先以实测示功图，即地面示功图，为边界条件，通过对有杆泵抽油系统的抽油杆柱进行受力分析，同时考虑油井的井斜角和方位角，建立一维波动方程。

Firstly taking he dynamometer card tested in spot as boundary condition , and then set up one-dimensional wave equation based on stress analysis of sucker rod string , regarding hole deviation angle and azimuth angle of well .

第二次在4066.21m侧钻，用双弯和单弯螺杆钻具增斜，于4472.05m（井斜角88°）进入水平段。

Then sidetracked at 4 066 . 21m , employed Dyna-drill with double or single Bend Sub to increase the hole angle , and entered the horizontal section at a depth of 4 472 . 05m ( deviation angle : 88 °) .

在此模型的基础上，本文分析了在不同地应力状态下井壁稳定性与井斜角、相对方位角、地层孔隙压力以及地层岩石力学特性等参数之间的相互关系；

On the basis of this model , this thesis analyse the relationship between wellbore stability in different stress status and all sorts of parameters including deviation angle , relative azimuth angle , formation stress , pore pressure and rock mechanical parameters .

压降分析法建立了相应的模拟试验装置，利用该方法可以研究井斜角、流量、偏心度和粘度因素对注水泥顶替效果的影响，对定向井固井有指导意义。

This paper presents a new cementing research method pressure drawdown analysis method ( PAM ), which can be used to study the influence of deviation angle , flow rate , eccentricity and viscosity on displacement effictiveness in directional well and horizontal well .

由于影响岩屑运移的因素有很多，包括环空返速、井斜角、井眼几何特征等，使得岩屑在井眼中的运移过程十分复杂，这些影响因素并非是孤立的，它们相互关联、相互制约。

The process of cutting is very complex , due to a number of factors , which including fluid annular velocity , hole inclination and hole geometric features etc , can affect the cuttings transport . These factors are correlated and constrained each other .

从4个方面论述了单稳定器钻具组合的特性，阐明了稳定器外径、钻压、井斜角与钻头井斜力的关系，分析了钻铤对稳定器钻具组合的影响。

Its characteristics were described from four aspects , and the relationship between the stabilizer OD , WOB , hole inclination and bit deviating force was also illustrated . The influence of drill collar to the performance of single stabilizer BHA was further investigated .

结果表明，不但能在钻柱旋转过程中测出近钻头处的井斜角、方位角及控制面角，而且可以消除钻柱磁感应对测量结果的影响。

The results show that , by using the surveying system described in this paper , not only the tip angle , azimuth and control face angle can be measured , but also the influences of the inducing magnetism caused by the rotary drilling string can be demolished .

这两口井井斜角和水平位移大，靶点多，裸眼段长，加之沙一段底部地层含有一套灰色膏质泥岩，给钻井施工增加了较大的难度。

With such characteristics as high deviation angle , long horizontal displacement , multiple target points , long open hole section of these two wells and a grey creaming mudstone to be drilled through , both wells are difficult to drill .

结合等效塑性应变准则定量地研究了井眼倾斜角和倾斜方位对裸眼完井砂岩油藏出砂的影响。

The effects of well trajectory and azimuth on sand production of bare well completion formation have been studied quantitatively in this paper with a commercial finite element software and Equivalent Plastic Strain .

井下动态测斜系统是指在钻井的同时，对井眼的井斜角和井斜相对方位角的实时检测和信息提取的装置。

Downhole dynamic inclinometer system is a device that can do the real-time detection and information retrieval for the hole inclination and the corresponding direction of well deflection while drilling .

指出在设计水平并钻柱时，应把钻铤安装在垂直井段或井斜角不大的井段，而在大斜度井段和水平井段使用加重钻杆或普通钻杆。

It is pointed out that chill collar should be installed in vertical well section or the well section with small deviation angle but weighted drill pipe or ordinary drill pipe should be used in the well section with big deviation rate and horizontal well section .

水平井轨迹曲率&井斜角控制方法研究

Curvature - Drift Angle Controlling Method of Horizontal Well Trajectory

大位移井井壁坍塌压力随井斜角与井斜方位角的变化规律主要由地层的原地应力状态决定。

And the variation law of the hole collapse pressure of extended reach well along with hole angle and azimuth mostly decided by the status of the stratigraphic in-situ stress .

其次建立了平面等曲率井中钻柱屈曲的控制微分方程和对应的泛函，在建立模型时考虑了钻柱重力、井眼曲率和上端井斜角对钻柱屈曲的影响。

Secondly , the governing differential equilibrium equations and their corresponding functional for tubing buckling in constant-curvature plane wells are derived , and the effect of gravity , well curvatures and the deviation angles at the top end of tubing is included in the analysis .