The Applicability of Different Fluid Media to Measure Effective Stress Coefficient for Rock Permeability
Joint Authors
Wang, Ying
Li, Guozhi
Li, Min
Zhang, Jing
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-09-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Effective stress coefficient for permeability (ESCK) is the key parameter to evaluate the properties of reservoir stress sensitivity.
So far, little studies have clarified which ESCK is correct for a certain reservoir while rock ESCK is measured differently by different fluid media.
Thus, three different fluids were taken to measure a fine sandstone sample’s ESCK, respectively.
As a result, the ESCK was measured to be the smallest by injecting nitrogen, the largest by injecting water, and between the two by brine.
Besides, those microcharacteristics such as rock component, clay mineral content, and pore structure were further analyzed based on some microscopic experiments.
Rock elastic modulus was reduced when water-sensitive clay minerals were encountered with aqua fluid media so as to enlarge the rock ESCK value.
Moreover, some clay minerals reacting with water can spall and possibly block pore throats.
Compared with water, brine can soften the water sensitivity; however, gas has no water sensitivity effects.
Therefore, to choose which fluid medium to measure reservoir ESCK is mainly depending on its own exploitation conditions.
For gas reservoirs using gas to measure ESCK is more reliable than water or brine, while using brine is more appropriate for oil reservoirs.
American Psychological Association (APA)
Wang, Ying& Li, Guozhi& Li, Min& Zhang, Jing. 2015. The Applicability of Different Fluid Media to Measure Effective Stress Coefficient for Rock Permeability. Journal of Chemistry،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1067439
Modern Language Association (MLA)
Wang, Ying…[et al.]. The Applicability of Different Fluid Media to Measure Effective Stress Coefficient for Rock Permeability. Journal of Chemistry No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1067439
American Medical Association (AMA)
Wang, Ying& Li, Guozhi& Li, Min& Zhang, Jing. The Applicability of Different Fluid Media to Measure Effective Stress Coefficient for Rock Permeability. Journal of Chemistry. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1067439
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067439