The technologies could ensure the well bottom pressure keeping balanced during waiting on cement and cementing safety.
该技术能保证固井候凝过程中井底压力平衡，施工安全。
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。
The rule of reservoir pressure distribution and bottom hole flowing pressure alteration of a periodic trial-produce well in infinity subterranean formation.
无限大地层中—口间歇试采生产井的地层压力分布及井底流压变化规律；
In order to provide scientific basis for mining coal-bed methane, it is necessary to analyze the pressure on well bottom.
为了给煤层气勘探和开发提供理论依据，必须对煤层气井井底瞬时压力进行分析。
Darcy's law indicates that formation pressure of an oil well has some correlativity with wellbore fluid producing volume and bottom hole flowing pressure.
达西定律表明，油井地层压力与井筒产液量和井底流压具有相关性。
Bottom pressure calculation method of surpressure gas well and how to correct the pseudo-critical parameters of natural gas with high content of H_2S and CO_2 are presented in this paper.
本文介绍超高压气井井底压力的计算方法，以及如何对高含H_2S和CO_2天然气的视临界参数进行必要的校正。
The influence of water temperature on water head height becomes bigger as the well depth increases. The pressure at the well bottom has to be measured by instruments in the well.
随着井深增加，水温对水头高度的影响越来越大，需要采用下井仪器测量井底压力。
The deep gas wells of Qingshen gas field in Daqing are characterized by the great well depth, high bottom temperature, high bottom pressure and gas production with water.
大庆油田庆深气田的深层天然气井具有井深、井底温度高、井底压力大、气水同产等特点，前人的井底静压折算公式不能达到生产所需的精度。
Through physical model test, overtopping wave, wave pressure at waveward side and bottom, as well as the overall stability of wave screen are measured.
通过物理模型试验，测量不同底高程条件下防浪墙顶部的越浪量、迎浪面及底面上的波浪压强和防浪墙的整体稳定性。
The study shows that cyclic steam injection rate, soaking time, flowing bottom hole pressure and blowdown mode are important factors influencing the effectiveness of single well steam stimulation.
分析认为，周期注气量、注气速度、浸泡时间和生产过程中的井底流压及降压方式都是影响单井吞吐效果的重要因素。
When pay zone is at the bottom of a well, the physical properties of oil, gas and water vary with temperature and pressure.
在井底产层的条件下，油气水的物性参数随温度和压力的变化而变化。
The spread range gets smaller because of threshold pressure gradient, and there will be a additional pressure drop in the bottom of the well because of the skin damage.
启动压力梯度使压力波传播范围变小，井底污染会造成一个附加压力降。
The abandonment formation pressure(AFP) of gas well is usually calculated by stable productivity equation and abandonment flowing bottom hole pressure.
通常人们采用气井某一时刻的稳定产能方程结合废弃井底流压来计算废弃地层压力。
It is very difficult to make tests in deep natural gas formation because of high temperature at the bottom of Wells, great pressure, complex well structure as well as the influence of hazards gas.
深层天然气地层测试难度大，主要是井底温度高、井底压力大、井身结构复杂，同时受有害气体影响。
The technology of monitoring well bottom while drilling has high precision, which can control borehole pressure more precise, but also the scope of the pressure gradient is well established.
井下随钻流量监测技术具有很高的监测精度，能够对井眼压力进行更加精细的控制，还能够对压力梯度范围很好的确定。
In order to explore the effect of ambient pressure on jet flow field in deep well and ultra-deep well, a physical model for flow field of confined water jet at bottom hole was established.
考虑到深井、超深井中井底围压对射流流场有一定的影响，建立了井底受限射流流场的物理模型。
In this paper, a numerical method to describe the distribution of pressure and temperature in the well bore with downhole-choke from wellhead to bottom was established.
对有井下节流装置的气井动态分析的研究，首次提出采用井口采集数据，从井口向井底计算井筒内的压力温度综合值的计算方法。
The pressure in well bottom relation with grouting time, the viscosity of cement liquid and the permeability in the confined aquifer were analyzed.
分析了注浆井底压力与注浆时间、注浆液粘度的关系以及与渗透率的关系；
For gas Drilling, the bottom hole pressure is far smaller than the formation pressure, so that the gas in the reservoir come out to the hole continuously and get out of the well.
当用气体钻井打开储层时，由于钻进时井筒流动压力远远低于地层孔隙压力，储层流体就不断地流入井筒，并返出到地面。
The pressure in well bottom relation with the time of the injection and the viscosity of cement liquid, and the permeability in the confined aquifer are analyzed.
分析了注浆井底压力和原区压力与注浆时间、浆液粘度、渗透率、计算点与注浆井距离等关系；
The monitor can automatically measure the annular liquid level changes at well head, and then calculate the bottom hole pressure.
该仪器能够从井口自动监测抽油井内环空液面深度变化，通过分析计算获得井下压力的恢复情况。
There is difficulty to confirm the bottom-hole pressure accurately and low accuracy and reliability when this kind well explained by using well testing model of flowing well.
对这类井，若采用自喷井建立起来的数学模型进行解释时，难以准确地确定关井时刻的井底压力，试井解释率低，可靠性差。
The analysis of data for pressure at the well bottom shows that the well pressure acquired through calculation by using the water level and water temperature which are easily observed on ground has...
井下压力测试资料统计分析证明，利用在地表上容易观测到的水位、水温资料计算出的井下压力，达到了与下井仪器相同级别的工程测量精度。
The paper presents the conception of bottom-hole critical flowing pressure and secure production of oil well. It is of practical significance for management of oil well.
提出了油气井临界井底流压和安全产量的概念，对科学地管理油气井有着一定的现实意义。
Factors affect gas lift options: the yield of the well bottom-hole pressure, fluid production index, lifting height and the gas injection pressure.
影响气举方式选择的因素有：井的产率、井底压力、产液指数、举升高度及注气压力等。
The pressure of slotted pipes in a sandy well was analyzed. The bottom hole pressure was computed. A model for computing the bending strength and stiffness of a slotted pipe was proposed.
对割缝衬管在防砂井中受外挤力作用进行了分析，计算了井底压力（包括流体流经砾石层和割缝衬管的压降） ，建立了衬管割缝参数与割缝条幅弯曲强度及刚度之间的关系式。
When bottom hole liquid increases in gas well, back pressure increases, and gas production is reduced.
在气井中，当井底积液增多时，会增大井底回压，降低产气量。
According to many affection factors such as fractures space and number, etc, the bottom-hole pressure and fracture flow rate distribution of horizontal well are analyzed in this paper.
针对裂缝间距和裂缝条数等影响因素，对水平井井筒压力和不同裂缝的流量进行了分析。
According to many affection factors such as fractures space and number, etc, the bottom-hole pressure and fracture flow rate distribution of horizontal well are analyzed in this paper.
针对裂缝间距和裂缝条数等影响因素，对水平井井筒压力和不同裂缝的流量进行了分析。
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