查询词典 underbalance

The minimum underbalance is independent of viscosity and compressibility and of reservoir fluids. It is a function of the formation porosity, permeability and radius of perforation channels.

最小测试压差不是依赖于地层流体粘度和压缩性，而是为地层孔隙度、渗透率和射孔孔眼半径的函数。

A dynamic formation evaluation may be also realized through the analysis of borehole gas unsteady flow, so that the analysis is an important component part of well test while drilling theory of underbalance drilling.

通过对井内气体不稳定流动的分析，还可以实现钻井过程中的动态地层评价，因此，井内气体不稳定流动也是欠平衡钻井随钻试井理论的重要组成部分。

It is shown that this kind of mud can meet the demand of underbalance drilling for horizontal length in Guang'an structure.

室内研究与现场应用表明，超低密度硬胶极压型油包水乳化钻井液能够很好地满足广安构造水平井段欠平衡钻井的需要。

The air well drilling is one kind of practice underbalance drilling,compared with other well drilling relatively have one's own advantages improve the speed of drilling,Protect the oil gas from bearing formation,find the oil and gas in time,but require especial equipment,Minimum displacement in the air well drilling is the difficult point,and its key too.

空气钻井是一种实用的欠平衡钻井，与其他钻井比较有自己的优势：提高钻速，保护油气层，及时发现油气，但装备要求高；空气钻井中最小排量的是难点，也是其关键点。

Underbalance ; well logging ; effect ; measure ; application ; recognition

欠平衡；录井；影响；措施；应用；认识

The core of this difficulty is how to keep the circulating pressure at the well bottom lower than the pore pressure or reservoir pressure within a proper margin (i.e., to design the underbalance degree).

其核心问题是如何在钻井过程中保持井底循环压力低于地层孔隙压力或储层压力在一个合适的范围内。

Differential pressure ; compensator ; underbalance effect ; oil well pump ; result ; analysis

压差；补偿器；负压效应；抽油泵；结果；分析

With constant depth study of exploration activity and development, the successful drilling of SongShen 101, WeiShen 5 and XuShen1-1 and so on, the underbalance drilling technology will be universally popularized and applied in DaQing oil field especially XuJiaWeiZi and ShenPing gas field and so on, it has very important meaning for valid development of outer oil field and hydrocarbon stimulating of DaQing oil field, it also offered powerful technical support for sustainable development of DaQing oil field.

随着油气勘探开发工作的不断深入，宋深101井、卫深5井、徐深1-1等井的成功钻遇，欠平衡钻井工艺技术将在大庆油田尤其在徐家围子、升平等气田将会得到普遍推广应用，对大庆油田油气增产和外部油田的有效开发将具有十分重要的意义，为大庆油田的可持续发展提供了强有力的技术支撑。

While underbalance drilling spreads greatly, rotating blowout preventer, as a kind of high technical product, is the crucial equipment to control well pressure.

国内欠平衡钻井普遍实施，要用到的旋转防喷器是关键设备，技术含量高。

In order to protect reservoir,save time and cost,through optimization study,the once completion craft of oil tube transmission underbalance perforating was adopted in completion.

雅轮凝析气田是一个富含凝析油的深层凝析气藏，为做好储层保护工作，同时节约时间和成本，通过优化研究，在完井时，采用油管传输负压射孔一次完井工艺。

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％。