文献类型：期刊文献

英文题名：Study of the Effect of Mineral Components on the Permeability Impairment Rate and Stress Sensitivity Factor of Shale

作者：Wang, Shuang Wu, Zhonghu Chen, Jun Liu, Hao Wang, Ruyue Liu, Jingshou

第一作者：Wang, Shuang

通信作者：Wu, ZH[1]

机构：[1]Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Univ, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 550025, Guizhou, Peoples R China;[3]Guizhou Univ, Coll Civil Engn, Guiyang 550025, Guizhou, Peoples R China;[4]Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China;[5]Guizhou Univ, Coll Min, Guiyang 550025, Guizhou, Peoples R China;[6]SINOPEC Petr Explorat & Prod Res Inst, Beijing 100083, Peoples R China;[7]China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China

第一机构：Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Civil Engn, Guiyang 550025, Guizhou, Peoples R China.

年份：2022

卷号：2022

外文期刊名：GEOFLUIDS

收录：;Scopus(收录号：2-s2.0-85128597361);WOS:【SCI-EXPANDED(收录号:WOS:000791341000001)】；

基金：This study was supported by the National Natural Science Foundation of China (project no. 52104080) and Guizhou Science and Technology Fund (project no. [2021]401).

语种：英文

摘要：The mineral components play an indispensable role in shale reservoirs, and the study of their content and character are significant for the permeability impairment rate and stress sensitivity of shale reservoirs. In this study, the shale cores from the FC1 well of the Lower Cambrian Niutitang Formation in northern Guizhou were used to analyze the mineralogical composition of five samples using X-ray diffractometry and for measurement of permeability and porosity of samples by means of the FYKS-2 high-temperature overburden porosimeter with N-2, and the samples were also subjected to uniaxial compression tests using the INSTRON 1346 electrohydraulic servo-controlled material testing machine (200T), thereby analyzing the effect of mineral components on the permeability impairment rate and stress sensitivity coefficient of shale. Results indicate that the permeability and porosity are negatively correlated with effective stress and clay mineral content, and positively correlated with detrital mineral content, whereas, the change of mineral composition is not obvious for porosity. Simultaneously, the permeability impairment rate and stress sensitivity factor decrease with growing quartz content and modulus of elasticity, and increase with rising clay mineral content. Additionally, the greater the brittle minerals content of shale, the more likely it is to undergo brittle damage and more crack extension during compression with predominantly elastic deformation, resulting in a lower stress sensitivity factor. Conversely, the higher is the stress sensitivity factor. The research results further deepen the understanding of mineral components on the permeability and mechanical properties of shale reservoirs.