Identification of sandstone core damage using scanning electron microscopy

Particles and fluids invasion into the pore spaces causes serious damage to the formation, resulting reduction in petroleum production. In order to prevent permeability damage for a well effectively, the damage mechanisms should be identified. In this study, water-based drilling fluid was compared t...

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Bibliographic Details
Main Authors: Ismail, Abdul Razak, Jaafar, Mohd Zaidi, Sulaiman, Wan Rosli Wan, Ismail, Issham, Shiunn, Ng Yinn
Format: Conference Proceeding
Language:English
Subjects:
Damage detection
Damage prevention
Drilling fluids
Electron microscopes
Fluids
Migration
Sandstone
Scanning electron microscopy
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Summary:Particles and fluids invasion into the pore spaces causes serious damage to the formation, resulting reduction in petroleum production. In order to prevent permeability damage for a well effectively, the damage mechanisms should be identified. In this study, water-based drilling fluid was compared to oil-based drilling fluids based on microscopic observation. The cores were damaged by several drilling fluid systems. Scanning electron microscope (SEM) was used to observe the damage mechanism caused by the drilling fluids. Results showed that the ester based drilling fluid system caused the most serious damage followed by synthetic oil based system and KCI-polymer system. Fine solids and filtrate migration and emulsion blockage are believed to be the major mechanisms controlling the changes in flow properties for the sandstone samples.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5010546