The Adaptive System Of Pumping Unit Based On Analysis Of Indicator Diagram

With the development of science and technology, computer technology is widely usedwith its powerful computing storage ability. At present,most of the oilfields are into laterperiod in the oil field mining production, sucker rod pumping unit is adopted to improve theoil field well drilling. But due to the oil field Wells are often located in the wild with complexwork environment, especially the uncertainty of the underground work environment, willaffect oil field exploitation, seriously will also affect the production of oil field oil well, andeven cause economic losses. Therefore, introduce the computer technology field into controlmanagement, can greatly improve the efficiency of oilfield production management, to reducethe cost, at the same time can achieve the purpose of energy saving, solve the field commonlyencountered problem of "production, efficiency and energy ".Well indicator diagram indicators as a mature theory, which has international recognitionin the work and the scientific research. At the same time, the indicator diagram area values thework done can be indicated sucker rod and pump efficiency and pump pumping productionhas the same change trend, so the indicator diagram of average size can directly reflect thevariation of pumping production situation. As theoretical basis, this paper will design a adoptsthe model of "intermittent" adaptive control system of pumping unit, and make it can widelyused in different working condition of pumping unit different surroundings. The system doesnot need to change the working process of the oil field oil well, do it only change the workingsystem, in guarantee under the premise of producing fluid volume and reducing energyconsumption, but also can enhance a certain amount of liquid producing, so as to achieveenergy saving, production targets. The thesis mainly carried out the following part:First, The paper firstly introduces the oilfield related knowledge and research relevanttechnology development present situation at home and abroad, illustrates the workingprinciple of pumping unit and oil well pump well indicator diagram are also elaborated theory,focus on indicator diagram energy saving some of the basic ideas, provides the theory basis for the below.Second, Put forward the system’s overall framework and modules, determine the "intermittent " between model working system. The method using indicator diagram area,according to the value indicator diagram area and pump efficiency and pump output with thesame change rule, the working system of the system is deduced by indicator diagram area setalgorithm, and stop smoking long algorithm, formulate reasonable working system of thepumping unit production. Also the failure caused by system analysis is introduced.Third, for the common fault in the common pumping unit during operation, this paper isbased on the morphological study of the dynamometer theory, to design a computer-basedgraphics processing fault diagnosis system. Through the graphics processing of collecteddynamometer to obtain fault dynamometer model diagram, it is used to compare withtroubleshooting standard pump diagram, to analyze fault types, and to pretreat.Finally, the system used in oil wells for field measurement, to test the stability of thesystem, artificial normal tone open and the effects of machine maintenance and other on theworking system, fault diagnosis and analysis, and other features and performance on thesystem.The system is achieved the expected goals of the design,and can be carried out in thefield to further. It can be to further optimization and upgrading through finding thedeficiencies in promoting use in the future.