论文成果

Stress sensitivity analysis of carbonate digital cores with different image resolutions

摘要:The stress sensitivity of reservoirs plays an important role in the field of oil and gas exploration and development. As an effective stress sensitivity analysis method, digital core has the problem of excessive computational cost. We thus propose a low computational cost method for predicting core stress sensitivity. This paper first established digital cores of carbonate rocks under different effective stresses, then calculated permeability under different stresses by a new decoupling method. It simplified the three-dimensional pore-scale simulation to multiple decoupled two-dimensional ones and greatly reduced the computational complexity. Meanwhile, to solve the problem of high computational cost, we upscaled the CT images and tested the effect of image resolutions on the accuracy of the stress sensitivity analysis. The results show that the stress sensitivity of digital core image is similar to that of the original image after upscaling. We thus can use scaled image for the calculation of the stress sensitivity of core. This computationally effective method provides a basis for stress sensitivity prediction of tight lithology reservoirs. ? 2023 57th US Rock Mechanics/Geomechanics Symposium. All Rights Reserved.

ISSN号:无

卷、期、页:57th US Rock Mechanics/Geomechanics Symposium

发表日期:2023-06-25

期刊分区(SCI为中科院分区):无

收录情况:EI(工程索引)

发表期刊名称:57th US Rock Mechanics/Geomechanics Symposium

通讯作者:尤少华

第一作者:廖勤拙,盛茂,李根生,张逸群,熊超,李敬彬

论文类型:会议论文

论文概要:尤少华,廖勤拙,盛茂,李根生,张逸群,熊超,李敬彬,Stress sensitivity analysis of carbonate digital cores with different image resolutions,57th US Rock Mechanics/Geomechanics Symposium,2023,57th US Rock Mechanics/Geomechanics Symposium

论文题目:Stress sensitivity analysis of carbonate digital cores with different image resolutions