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- Analytic solution is established to describe axial force distribution of strings helical buckled in vertical wells when slack down from the top. 用解析法建立管柱下放时的轴向力表达式,得出轴向力极限值。
- Because of deflection and unsymmetrical space around in horizontal and deviated wells, downhole flow status is much different from vertical wells. 摘要水平井、斜井由于井身倾斜以及井筒周围空间的非对称性使井下流动状态与垂直井极不相同。
- Suitable for vertical well drilling goisting, cage channel of vertical well drilling, port load and unload derrick, and tower crane. 适用于开设立井提升、立井罐道港口装卸起重机、建筑用塔式起重机。
- Abstract: Analyfc solution is established to describe axial forcedistribution of strings helical buckled in vertical wells when slack down from the top. 文摘:用解析法建立管柱下放时的轴向力表达式，得出轴向力极限值。
- Three types of response features occur during waterflooding, with highly deviated directional wells as production wells and vertical wells as injectors. 采用大斜度定向井采油,直井注水,在注水过程中油井呈现出常规型、突变型和波动型三种见效特征。
- The workover technology lor horizontal wells in the Shengli Oilfield is not perfect, and the workover tools in vertical wells are still used in most of horizontal wells. 针对胜利油田水平井修井技术还不十分完善、大部分作业沿用直井的常规修井工具的现状,研制了利用提放方式实现退出的可退式打捞工具,并形成了本体打捞和对扣打捞两种系列。
- The stability of directional well depends on the formation dip and trend, deviation and direction of well.In some weak\|face formations, vertical wells are much dif... 对斜井来说，地层走向、地层倾角、井斜方位和井斜角不同，其井壁稳定性也不同。
- Main Applications: Suitable for vertical well drilling hoisting. Cage channel of vertical well drilling, port load and unload derrick, and tower crane. 主要用途:适用于开凿立井提升、立井罐道及索道承重、斜井卷扬。
- Moving radius and moving boundary pressure are derived based on its star-tup pressure gradient.Productivity of vertical wells is derived on the above three parameters. 基于其启动压力梯度,推导出了宾汉流体的运动半径和运动边界压力求取公式在此基础上推导出了垂直井在稳态状态下的产能预测公式。
- The differential equation can be used to simulate the working state of the tensional section in the rotary slender drillstring in vertical well section. 利用该计算模型可以模拟石油钻井工程中旋转细长钻柱受拉段的工作状态，所得结果对钻井作业具有一定的指导意义。
- In the processing of vertical wells and fractured wells, the traditional Arps decline typecurves are certified to have scientific basis and only good for rate decline analysis in late stage. 在文中对普通直井和垂直裂缝井的推导演算中,多次证明了传统的 Arps 经验递减方程所具有的科学基础,而且只适用于晚期递减情形。
- In vertical wells, the included angle between the fracture surface and the current surface emitted by DLT( dual laterolog tool) is equal to the inclination of the fracture surface. 在直井中,双侧向测井仪所发出的电流面与地层裂缝面之间的夹角,等于地层中裂缝面的倾角。
- Study shows that horizontal well is better than vertical well for improving production result. 研究表明：水平井比直井更利于改善和提高油田开采效果。
- The filling pile drilling machine of KP2000 type applies to pore forming construction of various architectural base and shallow well with heavy caliber, vertical well of small coal mine, defense engineering bore using and other drilling projects. KP2000型灌注桩钻孔机适用于各种建筑基础成孔施工以及大口径浅水井、小煤矿竖井、国防工程用孔等钻孔工程。
- I am well aware that this is a tough job. 我深知这是一件棘手的工作。
- Two and three dimensional simulation studies have been done to evaluate waterflood oil recovery in a 40 acre 5 spot pattern using horizontal and vertical well systems. The three dimensional simulation results indicate that the parameters considered,i. 为了评价面积0.;16km2（40英亩）的五点井网水平井系统（水平注水井和水平生产井）和垂直井系统（垂直注水井和垂直生产井）注水开发的原油采收率，进行了二维和三维模拟研究。
- The vertical line meets the horizontal one here. 垂直线与水平线在此相交。
- Taking into account the rotating effect of the drillstring, this paper presents a bifurcating differential equation for the rotating slender drillstring being in tension in vertical well section. 考虑到垂直井中钻柱受拉段在旋转时的转动效应，建立了顶部悬挂、受分布浮重作用的旋转细长钻柱的分岔微分方程。
- So the gradient of pressure decline in vertical well section and deviated well section is different, it aroused the gradient of fluid viscosity in the two sections has differentia. 在稠油流动过程中，压力损失主要表现为摩阻损失，因此，在定向井中，直井段和斜井段的压降梯度有所不同，流体粘度梯度在直井段和斜井段也有差异。
- The bread crisped up for you didn't wrap it well. 你没把面包包好，它变干了。
