Application On Reservoir Parameters Interpretation Of HDIL

Based on the geological characteristic of the reservoir full developed thin interbed in the DaQing oilfield,Daqing Well Logging Company has launched the project concerning inversion processing method research to get full use of HDIL(High Definition Induction Logging) data for reservoir evaluation.The paper's main purpose is to research formation model inversion method suited for thin interbed in DaQing oilfield,and to do array induction logging four parameter inversion method and conditioned array induction logging rapid continuous inversion method research.Four parameter inversion is nonlinearity,and its reliability will affect the credibility of the inversion outcome.Damped least square method is the most steady method in the engineering project.In this paper we use Damped least square method to do inversion.This rapid continuous inversion method utilize well logging curves to delaminate formation,and integrate auto-delaminate and human-computer interaction delamination to provide reliable initial model for iteration inversion calculation, and in the same time apply resistivity comparison and gamma as the constraint condition to reprocess the data from the inversion,all these improve the precision of this inversion and get the logical resistivity curves of both filter layer and impervious bed.Have been measured and tested by plentiful theoretical formation model and factual well logging data,the result of this inversion process method is similar to the result got from Express of Baker Altas,all parameter inversion result error is no more than 5%.The inversion result has been applied in several medium depth and superficial wells in Daqing oilfield,provide forceful foundation to differentiate complicated oil-water relationship,improve the precision of the HDIL and can evaluate the reservior and the oil gas capability effectively.