predrilling是什么意思

网络释义

用法例句

The currently used methods for calculating gas injection rate during gas drilling all take the temperature of natural formation at the same depth as the temperature of the annulus fluid,without considering the heat exchange occurred between the wellbore fluid and the formation.

目前关于气体钻井时所需注气量的计算方法均是将环空流体的温度取同一深度的自然地层温度来进行计算,没有考虑井眼内流体与地层进行换热的影响,这必然会带来误差。

Results show that with the increase of eccentricity between reaming tool axes and well bore axes,or with the decreas.

为了解随钻扩眼工具在井眼内的运动状态和受力情况,促进钻井工具的优化设计和更合理的应用,对随钻扩眼工具在井眼内的运动进行了研究,给出了基于拉格朗日方程的动力学分析方法;基于法向接触约束的惩罚准则,计算了扩眼刀翼与岩石之间的接触力,对随钻扩眼工具在井眼内的运动过程和动力响应进行了动力学仿真研究。

This article introduces two techniques of determining the-directions of natural fractures:One is micro-fracturing and oriented coring,the other is measuring the elliptic axis of the well bore by dipmeter logging.

在裂缝性地层，效益最好的水平井，其水平井井眼应与天然裂缝面垂直，这样可大大减少油气渗流阻力，充分发挥各个裂缝面的最大泄油效能。

Improvement of Φ70 compensated density logging tool and its application to large borehole;

Φ70补偿密度测井仪的改进及在大井眼测井中的应用

In gas condensate well designs and dynamic analysis,borehole pressure and the distribution of temperature are two important parameters.

在凝析气井井眼流体相态理论的基础上 ,综合考虑压力、温度之间的相互影响 ,建立凝析气井井眼压力、温度耦合组分模型。

Shear failure is a basic failure mode of borehole rock.

井眼剪切破坏是井眼岩石基本破坏形式之一。

Did he punch a hole in your ticket?

他在你的票上打眼了吗?

hand-held sinker

向下打眼的手持凿岩机

"We didn't bring her along in case we attracted too much attention!"

“防人家打眼，没有叫她！

Contusion eyes were induced by dropping a steel ball of 20 g from the height of 20 cm for 100 times.

扑打组:20g铁球20cm高度拍打眼球100次。

Blunt traumatic eyes were induced by dropping steel ball of 20 g from 20 cm height for 100 times.

拍打组:20g铁球20cm高度拍打眼球100次。

He hit me on the left eye

他打中了我的左眼。

He caught it right in the eye

他的眼睛被打个正着。

He gave me a bash on the eyes.

他一拳打在我眼睛上。

He punched him in the eye.

他一拳打到他的眼上。

give sb a black eye,ie hit sb in the eye causing a bruise

把某人打得眼圈发青.

He rubbed his eyes and yawned.

他揉揉眼睛打呵欠。

The enemy's eyes were hit blind.

敌人的眼睛被打瞎了

The blow gave him a black eye.

一拳把他的眼眶打青了。

He hit me so hard that it made me see stars.

他打得我眼冒金星。

He raised his people's gaze.

他打开了人们的眼界。

I like it to the backbone.

我打心眼里喜欢它。

I pitied him from the bottom of my heart

我不由打心眼里同情他。

He says all he has to do is turn around.

爸爸说，他打炮眼呀，打炮眼呀，一扭头就看见我了!