Study On The Lectotype Method Of Pumping Unit And Equipments Based On Oilfield Reservoir Characteristics

Oilfield site survey found that ShengLi Oilfield oil production plant in the prevalence of pumping unit load utilization is low,but the pumping unit load utilization in the pumping unit price,energy consumption plays a decisive role.Therefore,to improve the efficiency of oilfield utilization,reduce oil production costs and oil field energy consumption,with the help and cooperation of the ShengLi Oilfield branch,we launched a " The Study on the Lectotype Method of Pumping Unit and Equipments Based on Oilfield Reservoir Characteristics" Research.Through the field investigation and analysis of the oil field,it is concluded that the different development modes of the reservoirs are different,which leads to the great difference in the variation of the load characteristics of the pumping unit,which is also the main problem causing the difference.The reservoir attribute in the pumping unit is the main factor that determines the selection of the pumping unit,and the management and use habit is the secondary factor.First of all,through the analysis of reservoir performance diagram and determine the representative of the oil field diagram,for the choice of pumping unit to give guidance.The main code of the reservoir is shown as the three types of medium and high permeability reservoirs,the low permeability reservoir,the heavy oil reservoir.Because only to know the oil load diagram of the load changes in the law,in order to accurately the pumping unit of the force state of the components and reducer torque changes in the law to be reasonably preferred pumping unit structure size of the pumping unit The performance of the calculation and evaluation.Therefore,the problem of determining the reservoir diagram is very important.Then,the four-bar linkage mechanism of the pumping unit is used as the analysis object,combined with the working characteristics of the three-pumping system,kinematics and dynamic analysis are carried out.The displacement of the pumping unit,the speed of the suspension,The acceleration of the suspension point and the hanging point load,the crank torque and so on.It not only confirms whether the preferred pumping unit satisfies the requirement of the dynamic model,but also provides the theoretical basis and support for the later selection criteria.The calculation of the three pumping system,Analysis has a guiding significance.Pumping unit balance state pumping unit underbalanced,over balance,good balance of three.The relevant parameters of the relevant dimensions and the balance of the beam balance are examined and calculated.The curve of the crank torque in the well condition and the counterweight condition is obtained by MATLAB program debugging.And then fine-tune the balance,correction,and ultimately determine the size of the optimal balance weight.For a well-balanced pumping unit,the power of the motor in the upper and lower strokes is approximately equal,and the instantaneous power of the motor is much lower than the power consumed when unbalanced.Choosing the right balance is an effective way to reduce the maximum torque of the crankshaft and reduce the size of the gearbox,which is an effective way to reduce the motor model.So as to meet the different reservoir characteristics,from the balance point of view,for the selection of the appropriate pumping unit.Finally,according to the characteristics and characteristics of the pumping unit under the characteristics of different reservoirs in Shengli Oilfield,the selection method of different reservoirs and the same type of pumping unit is formed,which will bring considerable economic benefits to Shengli Oilfield and Social benefits.