№ 1,
2008
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The study of the influence of drilling fluids on the filtration properties of rocks
Institute of Geology and Geophysics of Azerbaijan National Academy of Sciences, AZ1143, Baku, H.Javid av., 119
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The paper presents results of experimental investigations of the influence of drilling fluids on the filtration properties of rocks.
Results of the investigations demonstrated that during the interaction of aqueous clayey drilling fluid with a rock, its colmatage takes place as a result of the penetration of clayey particles into the porous space. For this reason during the interaction of the drilling fluid with a rock, the extent of the restoration of permeability grows with the improvement of its filtration-capacity properties and it becomes lower with the growth of density of the drilling fluid.
Results of the investigations demonstrated that during the interaction of aqueous clayey drilling fluid with a rock, its colmatage takes place as a result of the penetration of clayey particles into the porous space. For this reason during the interaction of the drilling fluid with a rock, the extent of the restoration of permeability grows with the improvement of its filtration-capacity properties and it becomes lower with the growth of density of the drilling fluid.