PUMPABLE GEOPOLYMER FORMULATION FOR OILFIELD APPLICATION
First Claim
1. A composition comprising:
- an aluminosilicate source,a carrier fluid,an activator chosen from the group consisting of a metal silicate, a metal aluminate, or an alkali activator, and mixtures thereof,an aluminum containing compound chosen from the group consisting of bauxite, aluminum oxide and aluminum salt,and wherein the composition is a pumpable suspension in oilfield industry and is able to set under well downhole conditions.
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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, whilst 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 made of an aluminosilicate source, a carrier fluid, an activator taken from the list constituted by: a metal silicate, a metal aluminate, an alkali activator, or a combination thereof, and an aluminum containing compound taken in the list constituted of bauxite, aluminum oxide and aluminum salt and the suspension is a pumpable composition in oilfield industry and the suspension is able to set under well downhole conditions.
55 Citations
20 Claims
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1. A composition comprising:
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an aluminosilicate source, a carrier fluid, an activator chosen from the group consisting of a metal silicate, a metal aluminate, or an alkali activator, and mixtures thereof, an aluminum containing compound chosen from the group consisting of bauxite, aluminum oxide and aluminum salt, and wherein the composition is a pumpable suspension in oilfield industry and is able to set under well downhole conditions. - View Dependent Claims (2, 3, 4, 18, 19, 20)
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5. A composition comprising:
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an aluminosilicate source, a carrier fluid, an activator taken chosen from the group consisting of;
a metal silicate, a metal aluminate, or an alkali activator, and mixtures thereof, andan aluminum containing compound chosen from the group consisting of bauxite, aluminum oxide and aluminum salt, a retarder able to retard the thickening and/or the setting times of the composition and/or an accelerator able to accelerate the thickening and/or the setting times of the composition, wherein the composition is a pumpable suspension and the metal is an alkali metal and the oxide molar ratio M2O/SiO2 is greater than 0.20 wherein M is the metal. - View Dependent Claims (6, 7, 8, 9)
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10. A method to place a geopolymeric composition in a borehole in a formation comprising the step of:
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(i) providing a suspension within a carrier fluid by mixing an aluminosilicate source, an activator taken chosen from the group consisting of;
a metal silicate, a metal aluminate, an alkali activator, or a combination thereof and an aluminum containing compound taken in the list constituted of bauxite, aluminum oxide and aluminum salt,(ii) pumping said suspension into the borehole, and (iii) allowing said suspension to set under wellbore downhole conditions and thereby form the geopolymeric composition. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification