Application Research On Interwell Connectivity Analysis Models

Duirng the oil field development,resevoir connectivity is not only importnt content ofreservoir evaluation but also the basement of development and management program.In waterinjection projects,a knowledge of reservior connectivity is particularly important to maximizeoil recovery.As the development of reservoir,reservoir characteristics has changed a lot andthe state connectivity can’t relfet layer property correctly.Work of dynamical interwellconnectivity present prominent theory value and practical sense.This paper summarizes the connectivity analysis of conventional methods from thecategory of static and dynamic, and elaborates the advantages and disadvantages of variousmethodsMultivariatte linear regression model(MLR) and capacitance model and MultiwellProductivity Index model(MPI) were-bulit up with dynamic data of injection-productionwell5based on multivaritte linear regression,reservoir simulation,signal processing and systemanalysis-Quantitative characteirzation reasearch on reservoir interwell dynamic cconnectivitywas done in thie papenNonlinear filter was introduced in MLR model and MultiwellProductivity Index-Based Method Application to deal with Interwell Connectivity whichcases of large numbers of wells and open reservoirs., The connectivity parameter obtainedusing the MPI method can decouple the effects of injection rate,producer BHPs, skin factor，and location of the wells from the apparent connectivity.This paper finally uses capacitance model to analyse the interwell connectivity in a lowpermeable oil ifelds block and points out the inlfuence on the oil fields. The results show thatthe use of dynamic test information in multiwell reservoir to analyse interwell connectivity toget good effect. The method is simple and more feasible.