Evaluation Method of Design Programs for Intelligent Downhole Tool

Intelligent Downhole Tool dedicates the inevitable development and design direction of completion technique in the future. The property of non-uniqueness of the program will be strengthened during the mapping from function target domain to proposal domain. To select the optimal one and overcome the weakness of uncertain language information which is strong subjective and unsuitable for quantitative analysis, a method called uncertain language multiattribute decision-making is applied into the design and determination of Intelligent Downhole Tool programs. By building the multi-attribute system that faces the solution set, according to the multiattribute system oriented to proposal collection, multi-attribute evaluation matrix is obtained based on the language value of different proposals under specific attributes or attributes set. Then, using The Uncertain Expansion Order Weighting Average (UEOWA) operator and the formula of possibility degree to evaluate and sequence the schemes, a comparative reasonable one influenced by the specific property set is finally selected. The method’s application was showed through the proposals evaluation of smart downhole valve.