Reseach On Marching-On In-Time Scheme And The Fast Algorithm Of Time Domain Integral Equation

As the foundation of national economic development,oil and gas resources have a very important practical significance to the development of China's people's livelihood and national defense,and the stable and reasonable casing gas pressure is very important to the oil production of the oil well;However,for different well conditions,the pump condition,to ensure the stability of oil production,the amount of control casing pressure is also different,so researching the control casing pressure to stabilize oil production to increase oil production,improve economic efficiency,has an very important practical significance.However,the traditional oil well is using constant pressure valve,pressure relief valve and other control mode to control the casing pressure.It is still needed to carry on the set pressure judgment with the artificial experience as the standard,which makes the set pressure control in strong randomness,low degree of automation,and low exploitation of oil and gas resources.Therefore,this paper derives the mathematical model of reasonable casing gas pressure in oil well,which based on the researching of the relationship between casing gas pressure and liquid production.And then study a set of reasonable casing type oil well pressure force control system which can be used in high gas oil ratio oil well,design and develop the various modules of the system,which can realize the functions of real-time data acquisition,remote transmission,real-time monitoring of casing pressure and real-time controlling of casing gas control valve.In this paper,through the research of casing gas control system,the following results have been achieved:1.By the studies on the theory calculation of oil well casing gas pressure in the type of high gas oil well,this paper analyses and summarize the influence factor and realization way of reasonable casing gas pressure,and determined the main design index and functional requirements of the system by combining with the actual oil production technology and the traditional control method of casing pressure,finally completed the design of overall system.2.According to the system scheme,this paper design the overall hardware structure of the system,complete the equipment selection,develop the acquisition system,the transmission system and the computer control system which is applied to the casing pressure control system.3.Using SQL Server 2008 database management platform to supervise the system supporting database,and realize the develop of software system for oil well casing pressure control which realizing the data management,casing pressure control and analysis,and remote control and other functions by basing on C# programming language which under VS framework.