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Sand failure: effect of biocide on the geomechanical properties of outcrop carbonate rock under static condition.

Wuyep, Elizabeth; Oluyemi, Gbenga; Yates, Kyari; Akisanya, Alfred R.

Authors

Elizabeth Wuyep

Kyari Yates

Alfred R. Akisanya



Abstract

The effects of chemical interaction of a biocide with formation rocks on the rock geomechanical properties are examined. A combination of analytical tests (Scanning Electron Microscopy/Energy-Dispersive X-Ray Analysis, X-Ray Powder Diffraction and Particle Size Distribution) and uniaxial compressive test was used in this study. The particle size distribution in the effluent showed an increase in D50 with poor sorting for the chemically treated outcrop carbonate core samples. The XRPD shows evidence of altered minerals in the chemically treated samples. It was observed that the interaction led to precipitation of new materials that clogged the pore space of the samples leading to up to 150% increase in compressive strength of the carbonate following treatment with the biocide. The results give more insight into the limitations of existing sand production prediction models with respect to the effect of oilfield chemicals on the strength of the reservoir rocks.

Citation

WUYEP, E., OLUYEMI, G., YATES, K. and AKISANYA, A.R. 2020. Sand failure: effect of biocide on the geomechanical properties of outcrop carbonate rock under static condition. Arabian journal of geosciences [online], 13(23), article ID 1239. Available from: https://doi.org/10.1007/s12517-020-06176-y

Journal Article Type Article
Acceptance Date Oct 26, 2020
Online Publication Date Nov 19, 2020
Publication Date Dec 31, 2020
Deposit Date Oct 26, 2020
Publicly Available Date Nov 19, 2020
Journal Arabian journal of geosciences
Print ISSN 1866-7511
Electronic ISSN 1866-7538
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 13
Issue 23
Article Number 1239
DOI https://doi.org/10.1007/s12517-020-06176-y
Keywords Chemical interaction; Glutaraldehyde; Dolomite; Uniaxial compressive strength; Reservoir rock
Public URL https://rgu-repository.worktribe.com/output/978643
Related Public URLs https://rgu-repository.worktribe.com/output/245347
Additional Information This paper based and expanded from a paper selected from the 1st conference of the Arabian Journal of Geosciences (CAJG), Tunisia 2018.

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