Study On The Expert System Of Oilfield Flooding System Pipeline Network Reconstruction

As the oilfield enters high water cut exploitation phase, the quantity of water injection increases by a wide margin.and the former flooding system pipeline network all can not satisfy the needs of oilfield production, reconstructing and extending the former pipeline network have become an important job of oilfield building of output.The reasonable proposal of pipeline network reconstruction not only can make the operating cost of system reduce greatly.but can reduce the investment of system reconstruction.Owing to the fact that the scope of pipeline network is huge.and the quantity of nodes and pipelines is humerous.it is still hard to solve the problem of practical reconstruction merely relying on establishing mathematical model and algorithm of system at present.Being aimed at the problem of oilfield pipeline network reconstruction,and basing on the technology of simulation operating of flooding system.and combining the design of oilfield pipeline network and the experience of experts who solve practical problems in the production management domain,the expert system of oilfield flooding system pipeline network reconstruction design is established,which provides one kind of practical technology and tool for reconstruction design of the oilfield surface engineering.The expert system of oilfield flooding system pipeline network reconstruction contains knowledge base.inference engine.global database,explanation system,knowledge acquisition system and knowledge base management system.The man-made reconstruction design course of network will be accomplished by expert system of reconstruction design.Integating the knowledge that is needed during reconstruction design of system.the corresponding knowledge base, judging rule and inference control strategies of expert system are established,and at the same time,the automatic scan algorithm of system has been worked out.The simulation result indicates,the system exerts many superiorities of computer.and effectively defines the unreasonable part of system layout and puts forward opinions of reconstruction,and provides a reasonable way for reconstruction design of system layout.The expert system of oilfield flooding system pipeline network reconstruction has been got the application in pipeline network reconstruction design of a certain oilfield. The practical result of engineering reconstruction proves that the apply of expert system can find out the reconstruction design proposal more accurately and ensures that the operating cost of pipeline network and the investment cost of reconstruction get clear descent.The expert system of oilfield flooding system pipeline network reconstruction is an opening system.by combining the practical experience in order to rich the knowledge of knowledge base continually.it will suit the needs of oilfield pipeline network reconstruction design better.