It is con - sidered revolving drilling technique is one of the most effective methods to solve the problem of hard strata drilling in deep well and has good applying prospects.

旋冲钻井技术被认为是解决深井硬地层钻井难题的最有效方法之一，具有良好的应用前景。

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A new adjustable way was developed first time which use cluster well to decrease drilling cost and increase benefit in deep imbedded, low permeability, high pressure reservoir.

首次提出在深层高压低渗油藏采用分支井技术降低钻井成本、提高开发效益的调整手段。

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Based on the merit of foam, a new drilling method is put forward, that is the foam drilling technique of deep well applied in drought and scarce water areas.

依据泡沫的优点，提出了在干旱缺水地区采用深水井泡沫钻进技术的钻探新方法。

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That amount is less than the company will spend in drilling its ultra-deep Lineham Creek well in Louisiana that I wrote about last week.

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The whole construction is similar to an oil well on land, with the weight of the drilling fluid designed to contain the geological pressures deep in the ground.

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