The study of the critical production and water breakthrough from an oil well in a bottom water reservoir should be based on sound understanding of water coning shape in it first of all.
研究底水油藏油井的临界产量和见水时间等问题时，首先要对水锥的形态有一个正确的认识。
The bilayer well completion-water drainage-oil production technology can inhibit the bottom-water coning to tap the productive potential of the reservoir and improve the development result of it.
双层完井排水采油技术可以抑制底水锥进，达到解放油层生产潜力、改善油藏开发效果的目的。
The coning effect is caused by the motion of the rigid body axis.
圆锥运动是刚体运动的几何效应。
A theory model considering the face radial coning of spiral groove gas face seals was given.
提出一种考虑螺旋槽气体密封端面径向锥度的理论模型。
The experimental investigation of high- temperature alloy piercing performances is made by using the hot torsion test and coning test;
采用热扭转试验和锥形试验的方法对高温合金的穿孔性能进行了试验研究；
A study is made on the mechanism of bottom water coning in well and the shape of bottom water coning through barrier.
从研究底水突出油井的机理出发，讨论了底水上窜绕过夹层的过程。
Based on the mechanism of water coning of horizontal Wells in bottom-water drive reservoir the critical production pressure difference is obtained.
在分析底水油藏水平井开发底水脊进原理的基础上，建立了底水油藏水平井开发的临界生产压差计算公式。
Horizontal Wells, as one of the most efficiency ways, are applied to develop the bottom water reservoirs, but the most serious problem is bottom water coning.
水平井是开发底水油藏最有效的方法之一，而开发中遇到的最大问题是底水脊进。
The water coning caused by the imbalance between gravity and viscous forces is the most important reason for water production in different fractured reservoirs.
重力和黏滞力之间的不平衡性是水锥生产的重要原因，也是不同裂缝性碳酸盐岩油藏见水的重要原因。
Reducing hairiness is a system engineering, its emphases are spinning process and coning process, also including preparatory spinning process and primary material.
减少纺纱毛羽是一项系统工程，其重点应在细纱工序和络筒工序，再及前纺工序和原料。
The nonlinear coning motion equations in body coordinates on the force moment coefficients of low speed spinning rocket were obtained based on the dynamics equations.
根据滚转火箭弹的动力学方程，给出了在弹体坐标系下无控低速滚转火箭弹在被动飞行段的锥形运动方程组。
In this paper, the improved attitude algorithms are developed using both angular rate and incremental angular signals, and the coning errors of the algorithms are given.
因此，同时利用角速率及角增量信号，优化设计出一类新的旋转矢量姿态算法，给出了算法的圆锥误差表达式，并进行了仿真分析。
In this study different dynamic models were constructed to search for the key parameters affecting the coning process in both single-well and Cartesian multi-well models.
在这项研究中，为了寻找影响锥进过程的关键参数，在单井和卡迪尔多井模型中建立了不同的动态模型。
Based on the analysis of the general expression of coning compensation algorithms, a method which USES Angle rate to fit the Angle increment was put forward and verified.
在分析圆锥误差补偿通式的基础上，提出了利用角速率求取角增量的拟合算法，并给出了该算法的数学证明。
By the conditions of plastic stability of a column, the critical coning of die cavity is derived. conditions under which plastic instability can be avoided during upsetting a...
利用压杆塑性稳定条件，导出了锥腔的临界角；提出了不产生塑性失稳镦锻的综合条件。
It was shown that the conic error can be compensated by two-sample iteration algorithm with high-frequency vibration. The precision of SINS can be improved by coning compensation.
结果表明，二频机抖激光陀螺在振动条件下的圆锥误差可以通过双子样迭代算法补偿，提高了捷联惯导系统的精度。
Inhibiting water coning by water recovery from the oil reservoir with active bottom water can inhibit or slow down bottom water coning, stabilize oil production and control water cut.
对于底水能量较活跃的油藏，可利用采水抑锥工艺抑制或减缓底水的锥进，从而达到稳油控水的目的。
By the conditions of plastic stability of a column, the critical coning of die cavity is derived. conditions under which plastic instability can be avoided during upsetting are proposed.
利用压杆塑性稳定条件，导出了锥腔的临界角；提出了不产生塑性失稳镦锻的综合条件。
The coning of bottom water will happen as soon as the producing pressure drop of a well is higher than the difference of gravity caused by the difference of density between oil and water.
当油井生产形成压力降落大于油水密度差引起的重力差时，砂岩底水油藏锥进即会发生。
On the basis of this theoretic model, the critical production rate, the shape of water coning and the optimum perforation intervals could be calculated by the corresponding mathematical model.
在理论模型的基础上，建立了预测临界产量、水锥形态以及优化射孔长度的数学模型。
The results indicate that the film pressure distribution is changed, and the performance parameters such as opening force, gas film stiffness, leakage are dramatically influenced by the face coning.
结果表明，锥度改变了端面膜压分布，并显著影响开启力、气膜刚度以及泄漏率等参数；
Coning can also occur by drawing down the gas-oil contact around a well.
围绕一口井下拉油气界面也会出现锥进。
Coning error and quantizing error are two kinds of primary errors in the attitude algorithm of laser strap-down inertial system.
圆锥误差和量化误差是激光捷联惯性导航系统姿态解算误差的两个最主要的误差源。
Coning error and quantizing error are two kinds of primary errors in the attitude algorithm of laser strap-down inertial system.
圆锥误差和量化误差是激光捷联惯性导航系统姿态解算误差的两个最主要的误差源。
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