The Research And Application Of Three-dimensional Modeling Of Meandering River Reservoir

Meandering river deposits are mainly developed in shan1 section of well area 36-11 of sulige gas field,which is characterized by ultra-low porosity and ultra-low permeability.The reservoir is highly heterogeneous and is a tight sandstone reservoir.To solve above problems,this article has carried on the meandering river reservoir configuration modeling method is discussed,using hierarchical analysis,model fitting,the stratigraphic classification and correlation,the research of sedimentary facies and logging data,on the basis of the mountain in the studied area 1 period of quantitative characterization of meandering river deposition,and the relevant software is used to establish the shan 1 section of the three-dimensional structure model,3 d reservoir configuration model and reservoir attribute model under control.In view of the situation of lack of basic data in the study area,based on the part of the typical modern meandering river sedimentary frame of reference,summarizes the general characteristics of meandering river deposition,combined with the well pattern in the study area measured data,reasonably determine the mountain 1 section of the meandering river sedimentary sand body thickness,meandering river shore full width,meandering river point bar length,point bar width,aspect ratio and other quantitative parameters,and set up relevant learning knowledge base,has been clear about the plane distribution of sedimentary facies characteristics and distribution of sand body;In addition,according to the idea of hierarchical analysis,on the basis of the study of structure and sedimentary facies,a single channel and a single point dam were identified in turn,and the internal configuration of the point dam was dissected,and the parameters such as the thickness,extension range,inclination,interval and inclination of the lateral layer were determined,which provided a reasonable basis for reservoir configuration modeling in section 1of the mountain.In the end,based on the established three-dimensional geological model of reservoir,the mountain in the studied area of 1 top bottom structure,sand body distribution,reservoir porosity,permeability and so on has carried on the forecast,and natural gas reserves are calculated in the shan 1 section,prediction and calculation results agreed with the actual situation in the study area,reservoir shows that the established model has a certain practical value.