The purpose for the later is to improve the existing rotor screw drill for high efficiency. Subject heading: horizontal drilling screw drill tool control bending sub st...
研制后者的目的，在于改善现有中空转子螺杆钻具的软特性和低效率。
The answer: wells that drill vertically down to the shale bed, then make a gradual 90-degree horizontal turn through the shale deposit.
目前，科学家提出了解决方案——先垂直钻探至页岩床位置，然后以90度水平地钻探页岩沉积层。
This paper discusses the prediction of the drill stem torque and bit forward direction in an offshore horizontal well by nonlinear FEM.
探讨了非线性有限元在预测水平井钻进中的钻柱扭矩及钻头前进方向的应用。
The drilling frame is the main load-carrying part in horizontal directional drill, its strength and stiffness have great effect on the performance of the drill.
钻架是水平定向钻的主要承载部件，其强度和刚度对钻机能否正常工作影响很大。
The program guides to evaluate the oil field in a complicated geological situation and drill in horizontal well while it is applied to the work of interpretation and geosteering in the research zone.
将该程序应用于工区的随钻测井资料解释和水平井钻井的地质导向工作中，较好地指导了复杂地质条件下的油气藏评价工作和水平井钻井作业。
According to a report released this week by the U. S. Energy Information Administration (EIA), the cost to drill a horizontal shale gas well in China's Sichuan Basin has dropped by 23% since 2013.
根据本周美国能源信息署(EIA)发布的报告：从2013年开始至今，中国四川盆地页岩气水平井的钻井成本降低了23%。
Small size bent housing screw drill with high build rate must be developed to meet the requirements of sidetracking the short to medium radius horizontal well.
螺杆钻具是其中的一项关键技术，其主要目的是研制满足侧钻中短半径水平井需要的小尺寸高造斜率的弯外壳螺杆钻具。
The research indicated that the critical compressive force of drill stem in horizontal well is closely related with the length of single drill pipe in use.
研究表明，水平井眼中钻柱所能承受的临界载荷和所使用钻杆的单根长度有密切关系。
In this paper, the differential equation for the frictional resistance on the drill string in branch horizontal Wells was established and the total drill string friction during tripping was got.
本文建立了在水平分支井眼中的钻柱摩擦阻力微分方程，并得到了在起、下钻过程中钻柱的总摩阻。
Objective:To investigate the superiority by using high speed air turbine drill in extraction of impacted mandibular teeth, especially in low mesioangular impaction and horizontal impaction.
目的：探讨高速涡轮机在辅助拔牙，特别是在下颌近中低位及水平位阻生牙的拔除中的优越性。
Large bypass ports open automatically as drill pipe is run into the vertical or horizontal wellbore, diverting mud into the annulus above any restrictions.
当钻杆进入垂直或水平井段时，大孔径旁通自动打开，将泥浆无阻碍导入环空。
Wear of casing and too large torque are problems which can't be ignored when drill deep and super deep well, horizontal well and deviated well.
套管磨损和扭矩过大是钻深井、超深井、水平井和大位移井时一个不容忽视的问题。
Wear of casing and too large torque are problems which can't be ignored when drill deep and super deep well, horizontal well and deviated well.
套管磨损和扭矩过大是钻深井、超深井、水平井和大位移井时一个不容忽视的问题。
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