Auxiliary Decision Support System Of Well Completion

The Design of well completion is an important link of the process in the development of Oilfield. The engineers usually not only should select, rationalize and integrate a large number of design elements, but also should select the optimum design scheme based on the present demand of design, the possible measures took in the future, change of production conditions and potential problems. So, establishing a set of design scheme of well completion is a quite complicated and difficult task. With the development of the oilfield information technology and gradually perfect of the construction of the oilfield database, It become an important direction of the development of the present oilfield information technology that how to use effectively oilfield data and information to help engineer accelerate making of the completion scheme.This paper collects massive criteria and standards and designs of well completion, implements expression for knowledge of well completion and establishes knowledge base of well completion which includes professional knowledge and related standards such as selection of well completion methods, adaptation of well completion methods, matching relationship of pump, tubing and casing, cement performance and application scope, parameters of different process scheme determination on the basis of researching for workflow of the design of well completion. Storage of various facts, rules, standards and experience not only helps designer implement accumulation and query of knowledge, but also provides theoretical basis for decision support of system. Through researching for general method of design of well completion, relevant models of the design of well completion are established and the model library is established. It makes use of technology based on deployment of ClickOnce and model dictionary to manage models , implements design of well completion on the basis of calling model and makes structure of system to become more compact and process of design to become more convenient and rapid. With foundation data of well completion, auxiliary decision support system of well completion established on the basis of database, knowledge base and model library implements function of providing decision support for design of well completion through making use of knowledge base and modellibrary to process data and obta(?) the result.