查询词典 underbalance

During underbalance drilling gas reservoir is opened gradually,gas is in the shape of spherical from formation into annular flow and bubbles will be inflation migration,so radius of bubbles formation is important for the annular fluid.

欠平衡钻井过程中气层逐渐被打开时，气体将以小气泡的形式从地层进入环空流体中，气泡进入环空后将膨胀运移，变成大气泡，因此气泡生成半径对环空流体的流动规律有重要影响。

In underbalance circumstances, the response characteristics of partial logging instruments and the influence upon log data are analyzed and the influemce factors of the data on deep-shallow dual laterolog, compensated sonic log and compensated neutron log, etc.

文章对欠平衡状态下部分测井仪器的回应特徵及测井资料受到的影响进行分析，主要考虑了深浅双侧向、补偿声波、补偿中子等资料的影响因素。

Nitrogen drilling ; deep well ; drilling technology ; underbalance

氮气钻井；深井；欠平衡钻井

Horizontal well completion ; slim hole completion ; underbalance well completion ; cementing ; intelligence completion

完井；水平井完井；小井眼完井；欠平衡井完井；固井；智能完井

On the basis of producing status quo of outlying oil well and stripper/low permeability oil well,a new type of mobile pumping equipment—CYC20 pumping truck is developed.It is based on the underbalance production principle,using specially made swab direct produce crude oil in casing.

针对边远油井、低产低渗油井开采的现状，研制开发出了一种新型移动抽油设备———CYC2 0型抽油车，它根据负压采油工艺原理，利用特制的油抽子在套管中直接抽汲原油进行采油。

Air underbalance drilling, is the drilling technique which could used gases, typically compressed air, natural gas, nitrogen and diesel tail gas as a circulation liquid.

气体欠平衡钻井，可以采用空气、天然气、氮气、柴油机尾气作为循环介质，其循环系统的压力分布、钻井机械的选择、控制井斜与传统钻井方式相比有着很大的区别。

In pressure of influence underbalanced drilling,such as drilling fluid column pressure,annulus pressure,underbalance pressure,wellhead back pressure and formation pressure etc.,the formation pressure is basic pressure.Because all pressure calculations are built on the basic pressure.

认为在影响欠平衡钻井的钻井液静液柱压力、环空压耗、欠压值、井口回压、地层压力中，地层压力是首先要搞清楚的最基础的压力，最好先求出地层压力而不必急于进行欠平衡钻进，因为一切欠平衡的压力计算都是建立在这个基础压力之上的；再根据地层压力确定合理的欠压值，确定所用的钻井液密度。

Coiled tubing ; underbalance ; underbalanced drilling ; payzone protection ; enhance penetration rate ; flexible tubing

连续油管；欠平衡；负压钻井；油气层保护；提高钻速；柔性油管

At present,study and application low density underbalance drillig fluid focus on four aspect:①gas drilling fluid;②aeration drilling fluid;③emulsi on drilling fluid;④foam drilling fluid.

低密度钻井液的研究与应用，目前基本上集中在下面 4大类钻井液上：①气体钻井液；②充气钻井液；③乳化钻井液；④泡沫钻井液。

When the sandstone gas reservoir is drilled open by the underbalanced drilling using water based mud, the underbalance pressure normally can hardly offset the imbibition capillary force of the rock, which may result in backwash imbibition.

这种自吸效应可能对砂岩气藏水基欠平衡钻井的储层保护效果产生影响，但目前与之有关的实验研究还很缺乏。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。