Wellbore fluids
AssigneeDowell, a division of Schlumberger Technology Corporation
InventorsChristopher Alan Sawdon, Shreekant Babulal Mehta
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Abstract
Wellbore fluids are disclosed which comprise liquid dispersions of particulate mixed divalent metal carbonates having a generally platy crystal form. Mixed alkaline earth metal carbonates are preferred. The invention further relates to a method of well construction, well remediation, or stimulation utilizing such wellbore fluids.
Claims23
A fluid selected from the group consisting of a fracturing fluid, a drilling fluid, a spotting fluid, a wellbore cement and a spacer fluid, said fluid comprising a brine and a liquid dispersion of a particulate mixed divalent metal carbonate having a platy crystal form.
A wellbore fluid comprising an oily continuous liquid phase comprising a particulate mixed divalent metal carbonate having a platy crystal form, the particulate mixed divalent metal carbonate having been treated prior to use with an agent rendering the surface of said divalent metal carbonate at least partially hydrophobic.
In a method of well construction in which a wellbore fluid is employed, the improvement comprising using a wellbore fluid comprising a liquid dispersion of a particulate mixed divalent metal carbonate having a platy crystal form.
In a method of well remediation in which a wellbore fluid is employed, the improvement comprising using a wellbore fluid comprising a liquid dispersion of a particulate mixed divalent metal carbonate having a platy crystal form.
In a method of well stimulation in which a wellbore fluid is employed, the improvement comprising using a wellbore fluid comprising a liquid dispersion of a particulate mixed divalent metal carbonate having a platy crystal form.
An oil-based drilling fluid consisting essentially of CaMg.sub.3 (CO.sub.3).sub.4, and an emulsifier.
A fracturing fluid consisting essentially of CaMg.sub.3 (CO.sub.3).sub.4, and a compound selected from the group consisting of water-soluble polymers.
Dependencies are inferred from the claim text.