Based on the analysis of woodworking drilling process, the design plan of a horizontal drilling machine is determined.

通过对木材钻孔工艺的分析，确定卧式木工钻孔机的设计方案。

youdao

The mathematical model for evaluating sidetrack horizontal well drilling is developed by using the fuzzy mathematical theory and analytical hierarchic process.

针对侧钻水平井钻井的特点，应用模糊数学理论和层次分析方法，建立了侧钻水平井钻井综合评价模型。

youdao

Horizontal well production forecasting formulas need to consider not only anisotropism and borehole eccentricity, but also the skin factor during drilling and completion process.

水平井产能预测公式除了要考虑储层各向异性和井眼偏心距的影响因素外，还要考虑钻井和完井过程中产生的表皮系数的影响。

youdao

Tim Probert, president of global business lines, says that horizontal drilling, a process in which a well is drilled down vertically and then angled around a curve to reach reservoirs from a horizontal angle that increases the well's exposure, is now 55% of Halliburton's total activity.

FORBES

Fracking is the underground fracturing of very deep underground shale deposits where natural gas is sequestered and then is recovered using normal process procedures of deep and horizontal drilling for recovering natural gas.

FORBES: Intelligent Investing

Horizontal drilling can offer many advantages to the gas extraction process, allowing wells to be drilled in several directions from one pad.

BBC: Fracking: Untangling fact from fiction