Geopolymer composition and application in oilfield industry
First Claim
1. 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.
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Accused Products
Abstract
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.
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Citations
97 Claims
- 1. 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.
- 17. 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.
- 30. 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.
- 43. 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.
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54. 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:
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(i) a retarder and/or an accelerator; (ii) an aluminosilicate source; (iii) an alkali activator; and (iv) a metal silicate. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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62. 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:
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(i) an aluminosilicate source; (ii) an alkali activator; and (iii) a metal silicate. - View Dependent Claims (63, 64)
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65. 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:
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(i) lightweight particles and/or heavy particles; (ii) an aluminosilicate source; (iii) an alkali activator; and (iv) a metal silicate. - View Dependent Claims (66, 67, 68)
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69. 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:
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(i) providing a suspension of said geopolymeric composition within a carrier fluid by mixing an aluminosilicate source, a metal silicate, and an alkali activator, and (ii) foaming the suspension of said geopolymeric composition. - View Dependent Claims (70)
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71. 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:
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(i) providing a suspension of said geopolymeric composition within a carrier fluid by mixing an aluminosilicate source, a metal silicate and an alkali activator to said suspension, (ii) pumping the suspension of said geopolymeric composition into the borehole, and (iii) allowing the suspension of said geopolymeric composition to set and thereby form the geopolymeric composition. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79)
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80. 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:
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(i) providing a suspension of said geopolymeric composition within a carrier fluid by mixing an aluminosilicate source, a retarder, a metal silicate and an alkali activator to said suspension, (ii) pumping the suspension of said geopolymeric composition into the borehole, (iii) activating in situ the suspension of said geopolymeric composition by releasing an accelerator within the suspension of said geopolymeric composition, and (iv) allowing the suspension of said geopolymeric composition to set and thereby form the geopolymeric composition. - View Dependent Claims (81, 82, 83, 84, 85)
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86. 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:
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(i) providing a stable suspension of said geopolymeric composition within a carrier fluid by mixing an aluminosilicate source, a retarder, a metal silicate and an alkali activator to said suspension, (ii) storing during a given time said stable suspension of said geopolymeric composition, (iii) activating the suspension of said geopolymeric composition by releasing an accelerator within the suspension of said geopolymeric composition, (iv) pumping the suspension of said geopolymeric composition into the borehole, and (v) allowing the suspension of said geopolymeric composition to set and thereby form the geopolymeric composition. - View Dependent Claims (87, 88, 89, 90, 91)
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92. 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:
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(i) providing a stable suspension of said geopolymeric composition within a carrier fluid by mixing an aluminosilicate source, a retarder, a metal silicate and an alkali activator to said suspension, (ii) storing during a given time said stable suspension of said geopolymeric composition, (iii) pumping the suspension of said geopolymeric composition into the borehole, (iv) activating in situ the suspension of said geopolymeric composition by releasing an accelerator within the suspension of said geopolymeric composition, (v) allowing the suspension of said geopolymeric composition to set and thereby form the geopolymeric composition. - View Dependent Claims (93, 94, 95, 96, 97)
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Specification