As part of that process they had to replace the dense drilling mud, which was used to keep the well under pressure while it was drilled, with sea-water.
在封井过程中，他们必须把用于在钻探过程里，保持钻井与海水压力相当的高密钻井泥更换掉：因为上方的海水的压力低于底下油气的压力。
Cuadrilla has so far only drilled two exploration Wells, with a third soon to be completed, but in its "high-end" scenario it envisages drilling 800 Wells in the area over 16 years.
目前为止，Cuadrilla公司只完成两个探井，第三个探井即将完工，但是在该公司的“宏大”设想中，他们将在未来的16年里，在轨地区钻出800个探井。
On May 26th BP, the company responsible for the well that Deepwater Horizon had drilled, started to pump heavy drilling mud into the well's blowout preventer, a set of valves on the sea floor.
应当为“深水地平线”钻井台石油泄漏事件负责的BP（英国石油公司）在5月26日开始用泵将重型钻井泥浆打入海底的阀门组（防喷器）中。
For example, any further drilling could use deviated Wells drilled from a central location in order to minimise the overall impact of development.
例如，以后钻井可采用从井中心位置钻探斜井，从而把对环境的影响降到最低。
This model has been applied to predictions of the drilling results and the gas pool pressures in the drilled Wells in this area and has indicated in accordance with the facts.
利用这一模式对本区钻探井进行钻探效果和气藏压力预测，符合程度高。
Introducing into air drilling, nitrogen drilling and air percussion drilling were applied in Puguang upper continental facies stratum; moreover, drilled successfully into Xujiahe group stratum.
引进空气钻井、氮气钻井、空气锤冲击钻井在普光气田上部陆相地层试验和应用，并成功拓展到须家河组地层。
The smooth tie-back of pre-drilled wells proves that Pinghu drilling template and all secondary structures for the tie-back are very successful.
平湖油气田预钻井顺利回接的实践证明，平湖钻井基盘和回接辅助结构技术是非常成功的。
Allows for the upper portion of the barrier to be drilled out, permitting pressure equalization across the tool before drilling out the upper slips.
—允许将工具的上部钻除，可以在钻除上卡瓦之前实现工具上下的压力平衡。
For mining CBM effectively, directional CBM production Wells were drilled through the application of directional drilling.
为有效开采煤层气，应用定向钻进技术施工煤层气定向井。
The construction of drilled hole with shaft wall protection by drilling mud belongs to the concealed work, the pile quality influences directly the superstructure security and the building subsidence.
泥浆护壁钻孔灌注桩施工属于隐蔽工程，成桩质量的好坏直接影响上层结构的安全和建筑物的沉降。
Those having three or four flutes are used for following smaller drills or for enlarging holes already drilled, and are not suited for drilling into solid stock.
那些有三个或四个长笛被用于下列较小的训练或扩大孔钻，不是已经适合钻井变成固体。
Required by geology or reducing drilling cost by using wells drilled, 3D sidetracking wells are getting more and more, 3D sidetracking wells are increasingly important in oilfield development.
地质要求或利用已钻井眼降低钻井成本，使三维侧钻井不断增多，三维大斜度侧钻井在油田开发中越来越重要。
In the drilling operation, it is important for determining a rational gas lag time and cutting lag time and for identifying newly drilled cutting accurately.
钻井施工中，确定一个合理的气体迟到时间、岩屑迟到时间以及准确识别真假新钻地层岩屑至关重要。
The rock stratum drilled by a rotary drill is random distributed and complicated, so it is difficult to define the drilling process.
牙轮钻机钻凿的岩层是随机分布、错综复杂的，因而钻进过程难以定义。
The mud in a mud drilling and water pumping well drilled through the Quaternary System can be only removed partly as the well is washed intensively.
泥浆钻进的第四系抽水钻孔，强化洗井后，只能部分消除泥浆钻进的影响。
It is believed that drilling failure is due to the high structural position of the drilled trap, strong denudation and poor oil and gas. preservation conditions.
研究认为钻探失利是所钻圈闭构造位置较高、剥蚀强烈、油气保存条件差所致。
To economically and efficiently develop the gas field, Wells were drilled using underbalanced drilling and slim-hole drilling technology.
根据高效低成本开发苏里格气田的要求，进行了欠平衡及小井眼钻井，为低成本开发苏里格气田做前期技术准备。
To bypass obstacles, a 2-D directional well, which can be drilled easily and has the low drilling cost, has many advantages.
二雏绕障定向井具有容易施工和钻井成本低等特点。
To raise wire-line drilling efficiency need to: 1. Select casing diameter and depth according to drilling depth, diameter, strata drilled and rock integrity, structure features, weathered layer depth;
提高绳索取心钻进效率要做到：一是根据孔深、钻孔孔径、钻孔所遇地层及其岩性的完整程度、构造特点、风化带发育深度等选择套管的直径及下入深度；
To study the drilling technique for decreasing the errors of ihe drilled hols as possible is to be ensured of the quality to use them.
光面爆破和预裂爆破技术已广泛地在路堑石方中应用，研究钻孔技术，尽量减少钻孔误差，是保证光面和预裂爆破的关键，在峒室加预裂一次爆破成型中尤为重要。
Igneous rock stratum in Daqing is the world-class difficult drilling formation. The rock drilled in the stratum have high drillability value and poor adaptability with drill bit.
大庆油田火成岩地层是世界级难钻地层，钻进过程中该地层岩石表现为可钻性值极高，地层与钻头适应性差。
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。
The principles, technology and field results of treating drilling site waste water in disposal pools of 15 wells being drilled are described.
药品用量按该井次待处理污水量由室内实验和现场小型实验所得结果确定。
The principles, technology and field results of treating drilling site waste water in disposal pools of 15 wells being drilled are described.
药品用量按该井次待处理污水量由室内实验和现场小型实验所得结果确定。
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