Experimental Research of Mudcake Formation on Low-Permeable Sandstone Samples

The authors show that data on characteristics of drill mud penetration zone improve reliability of geoinformation obtained from borehole geology and geophysics. The developed procedure for the data interpretation takes into account the geomechanics and hydrodynamics of drilling. A part of the drill...

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Bibliographic Details
Published inJournal of mining science Vol. 59; no. 5; pp. 742 - 748
Main Authors Evmenova, D. M., Golikov, N. A., El’tsov, I. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.10.2023
Subjects
Earth and Environmental Science
Earth Sciences
Geomechanics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Mineral Resources
geoinformation system data interpretation
experiment
rock sample
porosity
permeability
mudcake
penetration zone
mudding zone
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Summary:The authors show that data on characteristics of drill mud penetration zone improve reliability of geoinformation obtained from borehole geology and geophysics. The developed procedure for the data interpretation takes into account the geomechanics and hydrodynamics of drilling. A part of the drill mud penetration zone is represented by mudcake which prevents direct measurement of porosity and permeability. The article describes the experimental studies on growth of the mudcake on the samples of low-permeable sandstone from the Jurassic reservoir rock mass using an original facility. The petrophysical nonuniformity of the mudcake was determined. The repeated measurements revealed the mudding zone.
ISSN:1062-7391
1573-8736
DOI:10.1134/S106273912305006X