第四章分析了非直井迹控制系统的特性。
Chapter Four analyzes the characteristics of optimal control system.
对于大多数直井，倾角其实也只是对井眼轨迹的测量。
For most vertical wellbores, inclination is the only measurement of the path of the wellbore.
当板栅和具体的注入是完全的时候直井是地下避难室。
When the sheeting and concrete injection was complete the shaft was dug out.
但是，有些水平井的产量与直井相比，达不到预期效果。
But some horizontal Wells does not gain the perfect productivity, due to low permeability or some other reasons.
研究表明：水平井比直井更利于改善和提高油田开采效果。
Study shows that horizontal well is better than vertical well for improving production result.
这就是水平井区别于直井，产生套管下入困难的直接原因。
This is the direct reason why the casing into the Horizontal Well is so difficult in the Horizontal Well.
对于直井，弓型弹簧扶正器足以满足上述功能，并被通常使用。
For straight holes, bow spring centralizers are sufficient and commonly used.
研究结果对直井的防斜打直、斜井的井眼轨迹控制具有指导意义。
The research result has a guiding significance about preventive inclination of vertical well and wellbore trajectory control of inclined well.
分别对直井和斜井平行射孔射孔器进行设计，达到精准射孔的目的。
Conducting design to vertical and horizontal well, the objective of accurate percolation is reached.
他在1979年就已经在二叠盆地钻探直井，但是只取得了少许成功。
He'd been drilling vertical Wells in the Permian since 1979 with only modest success.
与直井相比，大位移井具有长水平井段，大斜度，长裸眼降斜井段等特点。
Highly deviated Wells has the characteristic of long horizontal interval, high Angle and long deflection reducing open well bores.
实践证明，小眼丛式井比小眼直井钻井效率高，社会效益及经济效益显著。
The applications show that the efficiency of cluster slimhole wells is higher than that of vertical slimhole wells, and that the economic benefits are remarkable.
这种情况常出现在水平井或者有侵入影响并且层间电阻率对比度高的直井中。
These cases occur most often in horizontal Wells, or vertical Wells with the combined effects of invasion and large resistivity contrast between beds.
以抽油杆柱为研究对象，论述了斜直井游梁式抽油机冲程和冲次的计算方法。
Taking the rod string as the object of study, a method of computing pumping stroke and speed of walking beam pumping units for slant straight wells is also presented.
根据斜直井抽油杆柱工况特点，建立了斜直井抽油杆柱的一维有阻尼波动方程。
According to the operating mode of the rod string in slant straight Wells, the authors establish a one-dimensional damped wave equation for the rod string.
孤东7 -平1井是国内第一口海油陆采水平并，其稳定产量是普通直井的6倍。
Well No. 7-ping 1 in Gudong Oilfield is the first offshore well produced onshore, the oil production of which is 6 times more than conventional vertical Wells.
该项工艺不仅适用于直井，也适用于大斜度井，因而，适用范围大，应用前景广。
The technology is the same with vertical well, also with high Angle deviated hole, and has broad application range.
因为弓型弹簧比井眼稍大一些，因此在直井或倾角较小的定向井中能够完全居中。
Since the bow springs are slightly larger than the wellbore, they can provide complete centralization in vertical or slightly deviated Wells.
在肇州油田州603区块开展了水平井与直井联合开发试验，取得了较好的效果。
The unit operation of horizontal Wells and vertical Wells was experimented in Block Zhou603 of Zhaozhou oilfield, and the experimental results were relatively obvious.
地层可钻性各向异性评价在直井防斜以及定向井井眼轨迹控制中具有重要的意义。
Evaluation of formation drill-ability anisotropy has important effect for preventing deviation of straight holes and planning drilling trajectories of directional Wells.
地层自然造斜规律和造斜能力是定向井井眼轨迹控制和直井防斜打直的基本地质依据。
The formation natural deflecting law and force are the basic geological foundation for the well trajectory control in directional wells and deflecting-protection in vertical wells.
利用直井与水平井的产能方程计算和对比分析了THN1凝析气藏初期和目前的产能。
By using vertical and horizontal productivity equation, it has calculated and compared initial and current deliverability of THN1 condensate gas reservoir.
业主采统包最有利标方式招商，并委由统包商办理直井用地之取得，开台湾工程之先例。
The client adopted the turnkey contract and most advantageous tender award. Especially the land acquisition is executed by the contractor and this trial is the first one in Taiwan.
斜直井压裂管柱良好的反洗井和可靠的密封性能为斜直井开采提供了一套有效的完井技术。
Better reverse washing of the fracturing string and reliable sealing property offer a set of effective completion techniques for slant hole well production.
利用替代比这一概念，本文提出了一种利用直井产能评价结果进行水平井产能评价的方法。
Making use of the concept of substituted ratio, the paper presents a method of evaluating horizontal well productivity with the help of the evaluated results of the straight Wells.
根据水平井的无因次产液速度确定出直井的注水速度，无因次注水速度随时间的变化规律。
The variations of dimensionless water-injection rate and injection rates in the vertical well are determined by dimensionless liquid production rate in horizontal well.
库1井直井段在完井测试期间，2次测试井下封隔器均被埋死，造成非常严重的井下事故。
During the completion well testing period of the vertical well section of Ku 1, we tested 2 times and the downhole packer was all imbedded, result in very serious downhole accident.
经现场5口井试验表明，不弯曲钻铤能够起到增大下部钻具组合刚度，控制直井段井斜的作用；
The on-site tests of 5 wells showed that the stiffness of lower drill pipe assembly was increased to control deviation in the straight hole.
在水平井中，由于砾石充填方向与重力方向相垂直，因而其充填规律与直井存在着根本的区别。
Gravel packing in horizontal holes is quite different from that in straight holes because of the direction of the gravel packing being vertical to the gravity direction.
在水平井中，由于砾石充填方向与重力方向相垂直，因而其充填规律与直井存在着根本的区别。
Gravel packing in horizontal holes is quite different from that in straight holes because of the direction of the gravel packing being vertical to the gravity direction.
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