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。

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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。

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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。

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When Cabot Oil & Gas offered a lease for the natural gas under their land a few years ago, saying that it might drill a single horizontal well nearby, they weren't worried.

VOA: standard.2010.01.02

The KKR money prompted Hilcorp to add four more horizontal rigs, bringing its total to six and allowing it to drill over 40 horizontal wells.

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You drill two horizontal wells and inject steam into the upper one, draw bitumen by gravity into the lower well and bring it to the surface.

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Drillers also use sensors to detect particularly promising rock intervals within the formation, and are able to move the drill string up or down, left or right as they drill through the horizontal section to target those intervals.

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