A novel reservoir classification method for sandstone reservoir evaluation using multi-scale digital rock method

Author:

Chen Ming,Gao Yongde,Wang Guanqun,Shao Haipeng,Chen Feifei,Long Wei

Abstract

AbstractThe formulation of an effective development plan, optimizing exploitation efficiency, relies heavily on accurate reservoir characterization. However, existing reservoir classification methodologies, which rely on macroscopic geological observations and well-logging data, have limitations in data availability and fail to capture micro-scale pore structure characteristics accurately. The emerging technology of digital rock, widely employed in the petroleum industry, also faces challenges in accurately capturing reservoir heterogeneity due to its single-scale nature and limited application for reservoir classification. To overcome these challenges, this study presents an innovative reservoir classification approach based on the multi-scale digital rock method. This approach integrates qualitative assessment of micro-CT images for particle contact relationships and pore types with quantitative evaluation of multi-scale characteristic parameters, obtained from micro-CT and scanning electron microscopy (SEM) images. The proposed classification method demonstrates excellent agreement with the prioritization of development and production data for offshore sandstone reservoirs. By establishing a robust evaluation methodology, this classification method facilitates exploration potential assessment and development strategy optimization within the field.

Funder

Guangdong Innovative and Entrepreneurial Research Team Program

Shenzhen Peacock Plan

Shenzhen Science and Technology Innovation Program

Publisher

Springer Science and Business Media LLC

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