基于平面相约束的三维砂体构型建模方法

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中图分类号：TE19 文献标志码：A

关键词：三维砂体构型建模；平面相；井资料；微构造面

Abstract：By introducing themicrofaciesplanardistribution into the3Dsandbodyarchitecture modeling process with1Dwel data，a3D sandbody architecture modeling method constrained by the microfacies planar distribution was proposed.Taking singlesandbodiesofdiferent microfacies types asthe modelingobjects，themicrofacies planardistribution toconstraithe planardistributionrange and morphological characteristics of each individualsandbodywas introduced，andthe3D sandbody architecture modelwas established byidentifying thetopand botommicrostructural surfacesof thesandbody withinthe planardistributionrange.The mathematical model wasemployed tooptimize the microstructural surfaces of individual sandbodies，andthesuperpositionrelationship wasutilized tooptimizethecontactrelationshipbetwensandbodies.Theresults indicatethat the method can wellcharacterize diferent microfacies typesof single sandbodies，and exhibitsignificantadvantages in portraying thecomplex morphological characteristicsofsandbodies.Itcan eficientlydepictthecomplex plane geometric shapesofsinglesandbodiesofvarying microfacies types，appropriatelyreflectthecross-sectional morphologicalcharacteristics of individual sandbodies，andreasonablyrepresentthecomplexcontactrelationships between diferentarchitectureunits.

Keywords：thre-dimensional sandbodyarchitecturemodeling；microfacies planardistribution；welldata；microstructural surface

砂体构型是指不同级次砂体形态、规模、方向及相互叠置关系，可以反映单砂体之间的连通程度及连通模式，决定了开发井网部署及地下油水的运动规律，因此砂体构型研究对于提高油气田开发效率具有重大意义[]。（剩余20524字）