Research And Implementation On Geological Knowledge Database For Fluvial Reservoir Architecture

The geological reservoir contains abundant mineral resources.To establish a geological model contributes to the effective extraction and management of underground resources under the theory of oil and gas reservoirs.The establishment of a geological model involves stochastic modeling with equal probability,so to improve the accuracy and credibility of the model requires constraining it with parameters derived from a large amount of data through mathematical and statistical analysis.Collecting a vast amount of documents,images,and images,and so on,to build a suitable geological knowledge database can help to refine the precision of the geological model.In response to the limitations of existing geological knowledge database in storing multi-source heterogeneous configuration data,preserving complete graphical information,and conducting spatial attribute research on configuration elements,this study,based on GIS technology,establishes a spatial database with unified standard to store and retrieve existing structured and unstructured data of reservoir.It combines the spatial data and attribute data of fluvial facies reservoir architecture elements to establish a spatial data model for reservoir architecture elements,aiming to solve these issues.The specific research content includes the following three aspects:Firstly,research on reservoir architecture element data.Under the guidance of reservoir architecture theory and application requirements,this study classifies and summarizes the knowledge and data in the field of reservoir architecture,and sorts the integrated content,classification rules,data structure,and other fundamental aspects of reservoir architecture element spatial data.It constructs a hierarchical and structured reservoir architecture spatial data model.With Sediment-Configuration-Lithofacies as the core,the study investigates the spatial nesting relationships between different hierarchical configuration elements and the spatial contact relationships among elements at the same hierarchical level.Secondly,design of fluvial reservoir architecture geological spatial database.Guided by the research requirements of reservoir architecture,the study analyses the structural characteristics and data properties of reservoir architecture,organizes spatial data and attribute data,and defines entities and relationships between entities.It designs a spatial database of fluvial reservoir architecture using GeoDatabase to achieve hierarchical management and provide data support for subsequent quantitative studies of reservoir architecture.Thirdly,study on verifying the usability of reservoir architecture geological knowledge database and the effectiveness of its application.Taking the data extracted from close well spacings of the Sulige gas field and Datong outcrop in Shanxi Province as examples,this study conducts research on the application of the system of the reservoir architecture geological knowledge database in terms of genetic lithofaces proportion,genetic lithofaces transitional statistics,and object size.