定向井

Bingham流体在定向井眼中层流螺旋流压降公式

Pressure drop formula of laminar helical flow of Bingham fluid in directional hole

定向井偏心环空中Bingham流体层流螺旋流流动特性

Flow characteristics of the laminar helical flow of Bingham fluid in directional hole eccentric annuli

定向井三维设计全方位扭转时最终方位角（AHT）的计算

The calculation of the final azimuth ( aht ) in the turn of three dimension directional well design

江汉湖区浅层大位移定向井长10X井井眼轨迹控制技术

Well path controlling technology of shallow directional well Chang 10x with big displacement in Jianghan Lake area

φ140mm套管开窗侧钻定向井技术应用

Application of sidetracking directional well in 140 mm casing

中原油田目前双靶定向井的平均井深3049m，最大井深3500m；

The average driling depth of the horizontal well is deep 3049 m , the biggest is 3500 m ;

在分析定向井井眼轨迹形成的动态过程的基础上，提出了用灰色系统理论的GM（1,1）模型预测定向井井眼轨迹的方法。

Based on the analysis of the dynamic creating process of borehole trajectories , there is proposed in this paper a method using gray dynamic Model GM ( 1,1 ) of gray system theory for predicting the trajectory of a directional wellhole .

赵东F-1大位移定向井钻井技术大位移大井斜多目标定向井钻井技术

DRILLING TECHNOLOGY OF LONG-DISPLACEMENT DIRECTIONAL WELL FOR ZHAODONG WELL F-1 Technology of directional drilling with large - displacement and large decline and multi targets

PDC钻头在砂泥岩地层机械钻速高、钻头工作寿命长、耐高温能力强于牙轮钻头，因此更适合定向井、水平井施工。

As PDC bit has higher penetration rate in the sand and shale formation , longer working life and higher temperature capability than the cone bit , it is more suitable for directional and horizontal well construction .

2003年发布实施的《定向井轨道设计与轨迹计算》（SY／T5435-2003）新标准，没有规定入靶点坐标的计算公式，也没有给出入靶点所在测段的判别方法。

The specification about " Directional-Well Trajectory Design and Calculation " released in 2003 did not present the formula for coordinates of entry point to a horizontal target and the discriminant for the surveying interval containing an entry point .

应用电动钻机和顶部驱动钻井设备，优化钻具组合，完善钻井液性能，仅用79d就安全优质地钻成了这口大斜度高难度定向井。

It took only 79d to complete the extremely difficult high angle directional well safely with high grade by using the electric rig and top drive drilling equipment , optimized bottom hole assembly and perfect performance of drilling fluid .

南71井是河南油田的一口大位移、大斜度、长裸眼、双靶心定向井，完钻井深2024m，井斜55°，位移883m。

Well Nan 71 , the first extended reach , highly-deviated , long open hole and dual bull 's-eye well in Henan oilfield , has a drilled depth of 2024m borehole deviation 55 ° and displacement 883m .

浅层定向井螺杆泵举升工艺研究

Research on progressing cavity pump lifting technique for shallow directional well

定向井井迹准确度控制方法的初步探讨

A Preliminary Discussion on Control Method of Directional Well Trace Accuracy

砂岩气藏压裂定向井优化射孔工艺研究

On Optimizing Perforating Technology for Orientation Well in Sandstones Reservoir Fracturing

定向井抽油杆柱系统的准静态分析

A quasistatic analysis of sucker rod system in a directional well

绕障定向井轨道优化设计方法

Optimum Design of Directional Well Trajectories under Existing Drilled Well Obstacles

它包括侧钻斜井、定向井和侧钻水平井。

It includes inclined well , direction welland sidetrack horizontal well .

定向井井眼轨迹预测新模型

A New Model for predict Drilling Trajection of the Directional Wells

小位移深造斜点定向井施工技术

Drilling technology for directional wells of small displacement and deep Kop

定向井井眼轨道预测方法研究及其应用

Methods of predicting bit trajectory and their applications in directional drilling

安塞区块浅油层小眼定向井钻井技术

Slim-hole Directional Drilling Techniques in Shallow Oil Formations in Ansai Area

川东分枝定向井钻井液技术

Technique of Dilling Fluid in Multiple Directional Well in East Sichuan

论发展我国陆上定向井丛式井钻机的必要性

On the Development of Onshore Drilling Rigs for Directional Cluster Wells

二维定向井轨道优化设计及实例研究

Optimize Trajectory of Two-dimension Directional Well and Analysis of Applied Instance

简述了该方法的数学模型及其针对定向井井眼轨迹预测特点所作的改进。

The basic mathematical model of this method is presented briefly .

考虑到悬链线法钻定向井需要连续造斜，且井越深其井斜角愈大；

The deeper the well , the greater is the deviation .

定向井钻柱摩阻预测与应用

Friction prediction of drilling stem in directional well and its application

中原油田大斜度定向井钻井液技术

Drilling Fluid Technology of High Angle Directional Well in Zhongyuan Oilfield

一种新的绕障三维定向井轨迹设计方法研究

A new method on bypassing barrier 3D directional well trajectory design