Application of grey comprehensive evaluation method in evaluating oilfield water injection

Grey judgment method in grey system theory is used to determine grey class with water injection wells data in WenNan oilfield W33block. The factor set, comment set and weighting set have been made. The relationship between known sub - system and unknown sub - system is analyzed and comprehensive co - relation degree is calculated, which can be quantitative predict unknown system. The results can be provided to oilfield policymaker for ref-