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AssigneeSchlumberger Technology Corporation
InventorsVéronique Barlet-Gouedard, Benedicte Zusatz-Ayache, Olivier Porcherie
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The invention provides geopolymeric compositions, which have controllable thickening and setting times for a wide range of temperatures and a large range of geopolymer slurry densities. The geopolymer slurry compositions have good mixability and pumpability, while the set materials develop good compressive strength and permeability. The invention discloses a method for preparing geopolymer for oilfield cementing applications. The geopolymeric compositions according to the invention comprises a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator, lightweight or heavyweight fillers and a carrier fluid wherein the suspension of said geopolymeric composition is pumped in a well and allowed to set.
A pumpable geopolymeric composition for use in oilfield industry formed from a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator and a carrier fluid wherein the suspension has a viscosity lesser than or equal to 300 cP.
A pumpable geopolymeric composition formed from a suspension comprising an aluminosilicate source, a metal silicate, an alkali activator, a retarder and/or an accelerator and a carrier fluid wherein the oxide molar ratio M2O/SiO2 is greater than 0.20 with M being an alkali metal and wherein said pumpable geopolymeric composition has a viscosity lesser than or equal to 300 cP.
A pumpable geopolymeric composition formed from a suspension within water comprising an aluminosilicate source, a metal silicate, an alkali activator, and a retarder and/or an accelerator wherein the oxide molar ratio M2O/SiO2 is greater than 0.20 with M being an alkali metal and wherein said pumpable geopolymeric composition has a viscosity lesser than or equal to 300 cP.
A pumpable geopolymeric composition formed from a suspension within water comprising an aluminosilicate source, a metal silicate, an alkali activator, and a retarder and/or an accelerator wherein the geopolymer composition is in majority a poly(sialate-siloxo) geopolymer and wherein the oxide molar ratio M2O/SiO2 is greater than 0.20 with M being an alkali metal and wherein said pumpable geopolymeric composition has a viscosity lesser than or equal to 300 cP.
A method to control the setting time and/or the thickening time of a pumpable geopolymeric composition having a viscosity less than or equal to 300 cP, comprising the step of providing a suspension of said geopolymeric composition within a carrier fluid by adding:
A method to control the setting time and/or the thickening time of a pumpable geopolymeric composition having a viscosity less than or equal to 300 cP, comprising the step of providing a suspension of said geopolymeric composition within a carrier fluid by adding:
A method to control the density of a pumpable geopolymeric composition having a viscosity less than or equal to 300 cP, comprising the step of providing a suspension of said geopolymeric composition within a carrier fluid by adding:
A method to control the density of a pumpable geopolymeric composition having a viscosity less than or equal to 300 cP, comprising the step of:
A method to place a pumpable geopolymeric composition, having a viscosity less than or equal to 300 cP, in a borehole in a formation comprising the step of:
A method to place a pumpable geopolymeric composition, having a viscosity less than or equal to 300 cP, in a borehole in a formation comprising the step of:
A method to place a pumpable geopolymeric composition, having a viscosity less than or equal to 300 cP, in a borehole in a formation comprising the step of:
A method to place a pumpable geopolymeric composition, having a viscosity less than or equal to 300 cP, in a borehole in a formation comprising the step of:
Dependencies are inferred from the claim text.