Application of grey system theory in analogical method to determine heavy crude thermal recovery efficiency

Analog is a common method in newly-found,newly-developed or initially developed oilfield or block to determine recovery efficiency.Determination of analogical parameters,and selection of analogical reservoir are the key elements to determine the target reservoir reasonably.Through recovery empirical formula to determine analogical assessment parameters,apply analytic hierarchy process to determine weighted incidence degree of assessment parameters,carry on multi-target decision ideal point method to optimize analogical reservoir,finally determine the target reservoir recovery efficiency.