Abstract

There are two diametrically opposite views of the influence of slickwater on shale permeability among scholars at home and abroad. We used the shale outcrops rock samples from the Lower Silurian Longmaxi Formation in Sichuan Basin. The permeability of these dry samples before and after immersion in different solution systems were tested by pulse attenuation method. The experimental results show that the impregnation of different slickwater components and standard salt solution can promote the increase of the permeability of shale samples. The stress sensitivity of shale samples after liquid immersion is medium weak to weak. The sample stress sensitivity is weak after soaked by the synergist solution and Drag reducing agent solution, and the sensitivity of the sample stress is medium weak after immersed by the standard saline solution, defoamer solution and antiswelling solution; The Ki/K0 of the shale sample after liquid immersion on σi0 is consistent with the exponential stress sensitive evaluation model. With the increase of soaking time, the increase of sample permeability increases first and then decreases.

Meeting Name

3rd International Conference on Advances in Energy Resources and Environment Engineering, ICAESEE 2017 (2017: Dec. 8-10, Harbin, China)

Department(s)

Geosciences and Geological and Petroleum Engineering

Comments

This research is funded by Chongqing Research Program of Basic Research and Frontier Technology (No.cstc2017jcyjAX0290), and supported by the Scientific and Technological Research Program of Chongqing Municipal Education Commission (grant no.KJ1601320), and supported by the Scientific and Technological Research Program of Chongqing Municipal Education Commission (grant no. KJ1501323).

Keywords and Phrases

Drag reduction; Energy resources, Attenuation method; Drag reducing agents; Evaluation modeling; Liquid immersion; Permeability increase; Saline solutions; Stress sensitive; Stress sensitivity, Shale

International Standard Serial Number (ISSN)

1755-1307, 1755-1315

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2018 Institute of Physics Publishing, All rights reserved.

Creative Commons Licensing

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

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