动液面

推导出提捞采油的经济极限产量、含水公式、动液面拟合模型、供液能力和捞油产量拟合模型。

Economic production rate limit of bailing recovery and containing water formula have been given . Dynamic liquid level fitted model , feed flow ability and bailing recovery production rate fitted model are also given in this thesis .

经现场5口井应用表明：动液面高度控制误差在±45m内，确保了螺杆泵处于稳定的工作状态，提高了采油效率。

Through field application in five wells , the control error of dynamic liquid level height is the range of ? 45 meter and it can ensure that cavity pump is on the stable work state .

计算动液面；

Calculation of the dynamic liquid level in casing-tubing annulus ;

地面驱动螺杆泵动液面高度控制方法研究

Control method of dynamic liquid level height for surface driving screw pump

这种现象使机采井存在动液面偏高假象等问题。

This made the mechanical recovery well having a misleading appearance of higher producing fluid level ( PFL ) .

近年来，人们研究如何应用示功图资料推算动液面深度。

In recent years , people study how to apply the dynamometer card material to calculate the dynamic liquid level depth .

普通抽油泵吸入消耗的能量并非由动液面提供，而是由抽油设备本身所提供；

The energy consumed on the suction stroke of the pump is not provided by the dynamic fluid surface , but by the pumping equipment itself ;

在正常抽油时，由于连通孔始终连通着油管和油套环空，因而可随时对动液面进行测试。

During the normal oil extraction process , a working fluid level is tested anytime , since the communicating hole always communicate the tuning and an annular .

新型发声装置采用电容式电子震源发声，彻底解决了声弹发声的诸多弊端。（2）在线连续测量动液面。

Capacitive electronic sound source is applied in the new audible signal devices , completely solved the shortcomings in audible sound of shells . ( 2 ) Continuous on-line measurement of fluid level .

通过注汽调整措施，胜二区已取得较好的开发效果，单井日产液、单井日产油量均有上升，平均动液面下降，地层能量下降，采油速度显著提高。

Because of steam injection , the effect is obvious . Daily fluid and oil production rate per well increase , average producing fluid level drops , producing energy decreases and production rate increases .

在实际生产中，地面效率容易检测、计算和调整，井下效率则取决于产液量、动液面、泵效以及管柱的状况。

In practical application , it is easy to measure , calculate and regulate ground efficiency while the under ground efficiency is depend on liquid production , dynamic level , pump efficiency and tubing stem .

针对某些文献的不正确观点，提出四点看法：（1）只要有沉没度，动液面就参与作功，动液面不作功的观点不正确；

In the light of the incorrect viewpoints presented in some articles , four views are put forward : ( 1 ) the working fluid level participates in doing work so long as there is submergence depth ;

通过对反射波的分析，找出节箍波、液面波等各特征位置，开发频域分析程序，计算动液面深度与声速，实现各种频率分量的自动识别。

By analysis of reflection wave , feature position of day hoop-wave and surface wave are found , frequency-domain analysis program is developed , fluid level depth and speed of sound are calculated . Automatic Identification of various frequencies has been realized .

在地面驱动螺杆泵采油技术中，动液面高度的变化直接影响到抽油杆柱和螺杆泵的运动和受力状态，是控制螺杆泵稳定工作的主要参数。

In oil production process of surface driving cavity pump , the change of dynamic liquid level height will directly effect the movement and load state of rod string and screw pump , and it is the main parameters of controlling cavity pump steady .

通过将计算的动液面深度与实测的动液面深度进行比较，结果表明计算的动液面深度具有较小的误差，它节约了成本，在油田上可以广泛地推广。

By comparing the calculated value of dynamic liquid level and the observed data of the depth , the results show that the error of dynamic liquid level depth are small , it saves the cost , and can be widely expanded in the oilfield .

设计实例表明，在泵挂深度不增加和油层动液面未改变的情况下，新型泵的充满度明显提高，特别适合在地层能量小、液面低的油井抽汲油液。

Calculation shows that , under the condition of no increase of pump setting depth and no change of working liquid level , the fill factor of the new pump is increased remarkably , and the pump is especially suitable for using on wells with low formation energy .

在沁水盆地3煤层气井开采潜能的评价预测中，应用该方法分别预测了将该井的动液面置于3煤底和15煤底的气、水产量，效果良好。

The method is used to forecast the yield of gas and water of the 3 # coalbed methane well that the equilibrium water level in the well is put to the bottom of 3 # coal and 15 # coal respectively in Qinshui basin . The result is good .

同时，结合准确的深度测量使该仪器连续监测井筒内流体密度变化，精确给出油井动、静液面深度。

Meanwhile , combing the sharp depth test it can make this instrument to monitor the change of well bore fluid consistently , present the dynamic and static flow depth accurately .