Abstract
In order to decrease the purchasing cost of pumping units and select the proper type of pumping units, the synthetic evaluation for pumping units based on fuzzy theory is studied. Firstly, the primary evaluation index and secondary evaluation index are built according to the oil and gas industry standard, and absolute comparison and relative comparison are also introduced. Then, the fuzzy weight factors of each evaluation index are determined and the fuzzy matrix operation for pumping units is made. Finally, the evaluation example for three pumping units is done to verify the correction and rationality of the method in this paper.
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