During ultra deep well drilling, we will be confronted with high temperature, high pressure and complex produced fluid.
但在超深井钻井过程中，面临地层高温、高压、产出流体相态复杂，这对环空携岩和安全是一个严峻的考验。
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。
Based on the multivariable random drilling model, the multi objective reliability optimization of deep well drilling parameters is presented.
在多元随机钻井模式理论的基础上，提出了深井钻井参数多目标可靠性优化方法。
Study on rock mechanics of deep wellbore, especially on rock drillability and rock anisotropy is a key project to resolve the problems of deep or ultra-deep well drilling.
深部井眼岩石力学的研究，特别是深部井眼岩石可钻性和岩石各向异性的研究，是解决深井、超深井钻井关键技术的重要课题。
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。
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。
This well is characterized by deep drilling horizon and varied formation lithology, so its predrilling prediction of abnormal pressure is the most significant.
该井钻探层位深、地层变化大，钻前异常地层压力预测尤为重要。
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。
Water-power deep perforation well can ameliorate perforation completion and reduce skin factor of pollution during drilling.
实践证明，水力射孔井能够起到改善完井效果、降低表皮系数的作用。
The deep well automatic vertical drilling tools positioning at thousands of meters, the hydraulic steering mechanism of them is demand of upper performances.
深井自动垂直钻井工具工作于数千米深的井下，对其上的液压导向机构的性能有较高的要求。
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。
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。
It can be applied to leakage zone during the deep well measurement and the ultra-deep drilling operation.
可用于深井、超深井钻井作业中漏失层位置的测定。
The short liner cementing technique can successfully solve some difficult technical problems, such as casing collapse, loss circulation during ultra deep exploratory well drilling operations.
超深探井在钻进过程中出现套管挤毁、井漏而常规封堵无效等复杂问题，影响了下一步正常钻进，短回接尾管固井技术能很好地解决该技术难题。
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。
The location of the drilling holes and depths for water resources being based on geophysical data are proved to be accurate by the actual drilling and deep - well water - pumping test.
经钻探和深井抽水验证，物探的布孔位置和推断深度准确，丰富了物探找水经验。
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。
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。
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