Homogenous synthetic mud-to-cement cementing glasses
AssigneeIntevep, S.A.
InventorsYibran Perera, Virginia Buccellato, George Quercia, Aiskely Blanco
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Abstract
A synthetic glass family in the quaternary phase field of CaO—SiO2-Al2O3-MgO (CSAM) with hydraulic and pozzolanic properties for use in differing applications in the gas and oil well cementing area. A method of making a mud-to-cement (MTC) slurry and a method for treating oil and gas wells with the MTC slurry containing a homogenous amorphous synthetic glass made from a mixture of inorganic materials selected from the group consisting of CSAM, wherein the cementing glasses with the mixture of inorganic materials are in a 100% amorphous phase with a degree of crystallization of zero.
Claims50
A mud-to-cement slurry comprising:
- particles of a synthetic glass comprising a mixture of inorganic materials selected from the group consisting of CaO, MgO, SiO2, Al2O3, Fe2O3 and Na2O+K2O, wherein the synthetic glass is in a 100% amorphous phase with a degree of crystallization of zero;
- a high pH solution;
- a liquid phase;
- powdered amorphous silica;
- and
- an antifoam additive.
A method of producing a mud-to-cement slurry comprising the steps of:
- manufacturing particles of synthetic glass by:
- mixing inorganic materials selected from the group consisting of CaO, MgO, SiO2, Al2O3, Fe2O3 and Na2O+K2O, wherein the synthetic glass is in a 100% amorphous phase with a degree of crystallization of zero;
- melting the mixture of inorganic materials;
- quenching the melted mixture of inorganic materials;
- drying the quenched mixture of inorganic materials;
- milling the dried mixture of inorganic materials;
- activating the synthetic glass by reaction with a high pH solution;
- mixing the synthetic glass with a liquid phase;
- adding powdered amorphous silica;
- and,
- adding an antifoam additive.
A method for treating subterranean wells comprising the steps of:
- creating a mud-to-cement drilling fluid containing particles of a synthetic glass consisting of a mixture of inorganic materials selected from the group consisting of CaO, MgO, SiO2, Al2O3, Fe2O3, and Na2O+K2O;
- and,
- deploying the mud-to-cement drilling fluid into a subterranean well.
Dependencies are inferred from the claim text.