The Effect of the Fracture Surface for Stress Sensitivity in Shale Reservoir

Jin Gang He; Kao Ping Song; Jing Yang; Song He; Li Yan Sun; Di He; Xin Zeng

doi:10.4028/www.scientific.net/AMR.779-780.1427

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 779-780The Effect of the Fracture Surface for Stress...

The Effect of the Fracture Surface for Stress Sensitivity in Shale Reservoir

Abstract:

Due to the characteristics of the ultra-low permeability, facture system becomes the key to the deployment of shale gas, and the following stress sensitivity damage will restrict the engineering effect. The essay takes the Niutitang group of black shale as the research object, which carried out for natural fracture rock sample and artificial fracture rock sample study of stress sensitivity evaluation in order to compare differences between them. The experimental results show that the natural fracture rock sample is medium to strong stress sensitivity, while the artificial fracture rock sample is from strong to the extreme strong stress sensitivity. Natural fracture is more flattening than the artificial fracture formation because of leaching action. The processed SEM image can reflect structure information on the two-dimensional surface. Its surface structure conforms to the fractal structure characteristics. Whats more, fracture it can also reflect the three-dimensional information of the fracture surface through grey value, which provides a new imaging method for the research of surface microstructure for fracture.

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Periodical:

Advanced Materials Research (Volumes 779-780)

Pages:

1427-1430

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.779-780.1427

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Online since:

September 2013

Authors:

Jin Gang He, Kao Ping Song, Jing Yang, Song He, Li Yan Sun, Di He, Xin Zeng

Keywords:

Analysis of the Images, Fracture, SEM, Shale, Stress Sensitivity

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