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。
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。
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。
Compared with the advanced level in world, Petrochina still has the very big margin in the complicated deep well drilling level.
但是同世界先进水平相比，中石油在复杂深井钻井水平方面还有很大差距。
The important function is detailed on drilling technology for hydrological well applied in exploitation and utilization of underground water resources, especially in deep layer.
论述了我国水文水井钻探技术在地下水资源(特别是深层地下水资源)开采与利用中的重要作用。
For the extended well, high angle drilling, horizontal drilling and deep well drilling, or in the well section of large dogleg severity, or the long open hole, casing wear often happens.
在大位移井、大斜度井、水平井和深井钻井中，或者在狗腿严重度较大的井段，或者在技术套管下入后的长裸眼钻井过程中，常常出现套管磨损问题。
In addition, the techniques of producing remaining oil, preventing formation damage, improving drilling and completion and deep well production should be studied.
另外，挖潜剩余油技术、解除油层伤害技术、提高钻完井技术、深井采油技术等也需要攻关。
Hollow shaft type high pressure cooling system is used to solve the problem in deep drilling, as well as gun-drill with open groove, proper cutting consumption and single tool withdraw are applied.
笔者主要阐述了数控深孔钻床在使用枪钻进行深孔加工时工艺参数的选择，寻求最佳加工性能，以求达到快速加工、提高效率的目的。
Causes of casing wear and its effects on casing strength in drilling operations of deep well, ultra-deep well, extended reach well and horizontal well are analyzed in this paper.
分析了在深井、超深井、大位移井和水平井钻井施工中套管磨损的原因及对套管强度的影响。
Recently, the important exploration well Mashen 1 is successfully drilled with the depth of 8418 meters, which creates the first ultra-deep drilling record in Asia.
近日，中国石化重点探井马深1井顺利完钻，完钻井深8418米，创亚洲第一超深钻井纪录。
With drilling a deep water oil well often costing over $100 million, no one wants to be looking in the wrong place.
由于钻一口深水井的成本超过100万美元，因此没有人希望选错井位。
It's difficult to sidetrack in the deep well in salt bed, especially the creeping of the gypsum-salt bed, hole diameter reduction and collapsion etc. are the biggest barriers for sidetrack drilling.
在深井盐层中进行侧钻困难较大，膏盐层的蠕动、缩径、垮塌等不稳定性是侧钻的最大障碍。
It's difficult to sidetrack in the deep well in salt bed, especially the creeping of the gypsum-salt bed, hole diameter reduction and collapsion etc. are the biggest barriers for sidetrack drilling.
在深井盐层中进行侧钻困难较大，膏盐层的蠕动、缩径、垮塌等不稳定性是侧钻的最大障碍。
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