Reservoir Characterization Based on Sedimentary Genesis and Flow Capacity: Methods and Application

The abstract should summarize the contents of the paper in short terms containing 235–450 words. This document explains and demonstrates how to prepare your camera-ready manuscript for IFEDC 2020. The best is to read these instructions and follow the outline of this text. The text area for your manuscript must be 17 cm wide and 25 cm high (6.7 and 9.8 in., resp.). Do not place any text outside this area. Use good quality, white paper of approximately 21 × 29 cm or 8 × 11 in. (please do not change the document setting from A4 to letter). The current sedimentary facies belt mapping method used in the Daqing Oilfield divides sheet sands into main sands and non-main sands based on effective thickness levels for industrial application and promotion. Independent external reservoirs are classified as separate facies. While this classification method enables rapid mapping, it fails to accurately reflect the sedimentary genesis of the sand bodies, leading to contradictions such as “same facies but different permeability” or “same permeability but different facies,” as well as inconsistencies between static and dynamic data in certain well areas. These issues hinder precise dynamic analysis. To address the problems in the existing reservoir description methods, a new reservoir characterization approach was developed by breaking the limitation of dividing microfacies based on effective thickness. This new method utilizes core data from cored wells to characterize reservoirs based on sedimentary genesis and flow capacity, achieving detailed characterization of genetic facies and flow capacity. The new reservoir characterization results have been comprehensively applied to specific development tasks, such as optimizing tertiary oil recovery targets, analyzing injection-production correspondence, and selecting wells and layers for measures. This has expanded the potential targets for tertiary oil recovery, guided detailed dynamic adjustments in blocks, and yielded positive development outcomes.