Study On The Heterogeneity Of Deep Buried Conglomerate Reservoirs In The Lower Wuerhe Formation Of The Ma 2 Well Area

In this paper, Mabei oilfield 2 well section of lower Wuerhe formation where the regional geological background, sedimentary environment and features, the application of sequence stratigraphy principle, I contrast methods will be 2 well area, Mabei oilfield Wuerhe subdivision for the six layers. On the basis of previous studies, the heterogeneity of reservoir is combined with the type of oil reservoir, and the relationship between reservoir heterogeneity and oilfield production and development is analyzed. By microscope observation and analysis of detrital composition and determine the size of pore and throat, distribution, configuration and connectivity status, and explore the rock group, particle arrangement, matrix content and cement types to illustrate the reservoir micro heterogeneity. The macro heterogeneity is related to the inner layer, the layer and the plane heterogeneity. Reservoir heterogeneity study, even well profile directly reflected the intercalation in the study area, the distribution of determine the type of the interlayer.And through the stratigraphic division and correlation of the small layer classification and calculation of sand permeability variation coefficient, the onrush coefficient and the differential to illustrate the reservoir heterogeneity characteristic. Study on the heterogeneity between layers, to determine the interlayer lithology and sum up the distribution characteristics of interlayer using the typical curve comparison method. The heterogeneity of the formation heterogeneity is evaluated through the evaluation parameters of the reservoir heterogeneity. Plane non homogeneity in the course of the study, according to every mouthful of well logging data interpretation has been a set of reservoir characteristics, which can reflect the changes in the plane parameters, mapping the distribution of reservoir with various types of crude oil, combined with the characteristic of reservoir heterogeneity, the comprehensive evaluation of a plane heterogeneity and different types of crude oil in the distribution of contact.The innovation of this paper is, reservoir heterogeneity and storage reservoir type combined identify the causes of problems in the process of production and development, and provide the heterogeneity of the reservoir and the theoretical basis for oilfield development adjustment scheme.