Abstract: In this paper a mathematical model is proposed and its solution method is discussed. By use of this model development design of a new oil field and well patter adjustment in the mature period of an existing oil field can be done automatically. The development guidelines can also be studied. Based an control theory a series of factors, such as viI field geology, fluid flow descriptions, state planning demands for crude oil as well as capital and current expeases etc. Can be linked together synthetically as a system model. Through system optimization, the optimal design which so that corresponds to maximum economic advantages, highest level of water flooding recovery can be determined ete. Then production quota can be calculated. Automatic design for oil field development not only minimises the manpower requied, but also finds out some optimal decisions regarding oil production that are hardly evidenced by other tools Same numerical solution examples are given.