油井

The mechanism of sand production in oil reservoir of open hole completion and performed completion is analyzed.

在辽河油田现场应用的实例表明，该模型的预测结果与现场工程实践中已有的油井出砂经验预测模型相吻合。

Presently sand control of oil well control, while the research of inorganic matter is very little.

目前油井防砂多是采用机械防砂和树脂防砂技术，对于无机类防砂材料的研究却比较少。

Sand production in oil wells is one of the important problem in oil exploitation. It costs a lot of manpower and resources for prevention and research each year.

油井出砂是石油开采遇到的重要问题之一，每年要花费大量人力物力进行防治和研究。

Sand production in oil well has become a serious problem for unconsolidated reservoir production.

油井出砂已经成为困扰疏松油藏生产的一个严重问题，科学有效地进行出砂预测对于指导油田高效开发具有重要意义。

At last he found an oil well .

最后他发现了一口油井。

World's first successful oil well.

这是世界上首个成功开发的石油井。

The world's biggest oil well, it is said, lies beneath Detroit.

世界上最大的油井，这是说，谎言下方底特律。

We have a history as long as 50 years of producing oil well pipe.

我国生产油井管已有50多年的历史。

This technology have a very important meaning for the Gu-Dao oil-field development.

该技术对于提高孤岛油田注聚区油井的开发效果有着十分重要的意义。

Taking HPAM solutions as an example, the unsteady flow of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially is calculated; the distribution of velocity, flow rate and stability parameter is obtained; taking HEC solutions as another example, the flow of second order fluid in eccentric annuli with the inner cylinder moving axially is calculated too; the distribution of velocity and stress is obtained; the effect of eccentricity and axial movement on stress distribution on the outwall of the inner cylinder is analysed.

在理论上，分别用二阶流体和幂律流体模型描述聚合物驱油井产出液的非Newton流变性；分别建立了双极坐标系下二阶流体和幂律流体在内管做轴向往复运动的偏心环空中非定常流的控制方程及边界条件和初始条件方程；建立了幂律流体在内管做轴向往复运动的偏心环空中流动的稳定性参数和流体在内管壁上的压力分布计算公式；建立了二阶流体在内管做轴向运动的偏心环空中流动的流体在内管壁上的压力分布计算公式。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。