3、,验证所编程序。关键词:有杆抽油;示功图;诊断;波动方程;有限差分ABSTRACTRodpump oilrecovery of oilproduction in the worldoilindustry,andsofar in the productionengineering hasbeen dominatedbyartificiallift. Timely andaccurategraspof rod pumpingsystemworkingconditions, the diagnosis of well exist, and todevelopareaso
4、nable technicalmeasures so that the wells inatimelymanner to returntonormal production,improve lifting efficiencyand oilproduction, toimprove the comprehensiveeconomicbenefits of the oilfielddevelopment has veryimportantsignificance.Basedon thegeometry of the pumpingunit,theestablishm
5、entofa law of motionparameters of the pumpingunit polishedroddisplacement,velocity,acceleration, etc.. Rodpumpingequipment, pumpworks onthebasisof acombination of differentmaterials ofsuckerrod, suckerrod element stressanalysis anddescriptionof the suckerrodstring dynamicpropertiesofv
6、olatility equation. Inordertoestablish the diagnosisof themathematicalmodel, to the lawofmotion of the pumping ofthesuspensionpoint and the suspensionpoint measured to show thediagram asadiagnostic model boundaryconditions, numericalsolutionof themodel usingthefinitedifference method,
7、 usingVBlanguage towriteprograms tocalculatethe suckerroddisplacement andload of the column, painted toproduce adiagram.Two production wells data according to the XinjiangOilfield, theprogrammed well examples from the measured polishedrodload,displacement solving the displacement and