Extended cement compositions comprising oil-swellable particles and associated methods
First Claim
1. A method of cementing in a subterranean formation comprising:
- providing an extended cement composition consisting essentially of;
cement,water,an oil-swellable particle, anda set retarding additive,wherein the extended cement composition is unfoamed and capable of remaining at a viscosity of less than 70 Bc at room temperature for at least about 1 day;
storing the extended cement composition for a period of time;
adding a cement set accelerator to the extended cement composition;
introducing the extended cement composition into the subterranean formation;
allowing the extended cement composition to set in the subterranean formation; and
allowing the oil-swellable particle in the set cement composition to contact oil whereby the oil-swellable particle swells to counteract either a crack that forms in the set cement composition or a micro-annulus between the set cement composition and either a pipe string or the subterranean formation.
1 Assignment
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Accused Products
Abstract
A variety of methods and compositions are disclosed herein, including, in one embodiment, a method of cementing in a subterranean formation comprising: providing an extended cement composition comprising cement, water, an oil-swellable particle, and a set retarding additive, wherein the extended cement composition is capable of remaining in a pumpable fluid state for at least about 1 day; adding a cement set accelerator to the extended cement composition; introducing the extended cement composition into a well bore; and allowing the extended cement composition to set. Another embodiment comprises an extended cement composition comprising: cement; water; an oil-swellable particle; and a set retarding additive, wherein the extended cement composition is capable of remaining in a pumpable fluid state for at least about 1 day.
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Citations
28 Claims
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1. A method of cementing in a subterranean formation comprising:
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providing an extended cement composition consisting essentially of; cement, water, an oil-swellable particle, and a set retarding additive, wherein the extended cement composition is unfoamed and capable of remaining at a viscosity of less than 70 Bc at room temperature for at least about 1 day; storing the extended cement composition for a period of time; adding a cement set accelerator to the extended cement composition; introducing the extended cement composition into the subterranean formation; allowing the extended cement composition to set in the subterranean formation; and allowing the oil-swellable particle in the set cement composition to contact oil whereby the oil-swellable particle swells to counteract either a crack that forms in the set cement composition or a micro-annulus between the set cement composition and either a pipe string or the subterranean formation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of cementing in a subterranean formation comprising:
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providing an extended cement composition consisting essentially of; hydraulic cement, water, an oil-swellable particle, a set retarding additive, and an additional additive comprising at least one additive selected from the group consisting of a weight reducing additive, a heavyweight additive, a lost circulation material, a filtration control additive, a dispersant, a suspending agent, a crystalline silica compound, amorphous silica, salt, fiber, a hydratable clay, a microsphere, a pozzolan additive, latex cement, a thixotropic additive, and combinations thereof, wherein the extended cement composition is unfoamed and capable of remaining at a viscosity of less than 70 Bc at room temperature for at least about 1 day; storing the extended cement composition for a period of time; adding a cement set accelerator to the extended cement composition; introducing the extended cement composition into the subterranean formation; allowing the extended cement composition to set in the subterranean formation; and allowing the oil-swellable particle in the set cement composition to contact oil whereby the oil-swellable particle swells to counteract either a crack that forms in the set cement composition or a micro-annulus between the set cement composition and either a pipe string or the subterranean formation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of cementing in a subterranean formation comprising:
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providing an extended cement composition comprising; cement, water, an oil-swellable particle that comprises a block copolymer of styrene butadiene, and a set retarding additive comprising at least one additive selected from the group consisting of an organic acid, a lignosulfonate, and a synthetic retarder, wherein the extended cement composition is unfoamed and capable of remaining at a viscosity of less than 70 Bc at room temperature for at least about 1 day, storing the extended cement composition for a period of time; adding a cement set accelerator to the extended cement composition, wherein the cement set accelerator comprises at least one additive selected from the group consisting of calcium chloride, triethanolamine, sodium silicate, zinc formate, and calcium acetate; introducing the extended cement composition into an annulus between a pipe string and the subterranean formation; and allowing the extended cement composition to set in the annulus. - View Dependent Claims (27, 28)
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Specification