Wellbore sealing with unsaturated monomer system
First Claim
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1. A method for drilling and cementing a well, comprising:
- combining constituents comprising water and a proton acceptor metal compound to produce a drilling fluid;
thereafter utilizing said drilling fluid in a well drilling operation to form the well, thus producing a used drilling fluid;
thereafter combining said used drilling fluid with 10 to 200 weight percent based on the weight of said metal compound, of at least one water-soluble monomeric component having polymerizable unsaturated groups to produce a cementitious slurry; and
utilizing said cementitious slurry to cement the well.
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Abstract
A drilling and cementing process wherein a drilling fluid containing a proton acceptor metal compound component is utilized and thereafter combined with a water-soluble monomer having polymerizable unsaturated groups to give a cementitious slurry which is thereafter used in a wellbore cementing operation. There is thus provided a cementitious slurry comprising a drilling fluid, i.e., at least water and drill solids, proton acceptor metal compound component and water-soluble monomeric component having polymerizable unsaturated groups.
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17 Claims
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1. A method for drilling and cementing a well, comprising:
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combining constituents comprising water and a proton acceptor metal compound to produce a drilling fluid; thereafter utilizing said drilling fluid in a well drilling operation to form the well, thus producing a used drilling fluid; thereafter combining said used drilling fluid with 10 to 200 weight percent based on the weight of said metal compound, of at least one water-soluble monomeric component having polymerizable unsaturated groups to produce a cementitious slurry; and utilizing said cementitious slurry to cement the well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for drilling and cementing a well, comprising:
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combining constituents comprising water and a proton acceptor metal compound to produce a drilling fluid; utilizing said drilling fluid in a well drilling operation to form a borehole, thus laying down a filter cake and producing a used drilling fluid; contacting said filter cake with a water-soluble monomeric component having polymerizable unsaturated groups; disposing a pipe in said borehole; passing a cementitious slurry down said pipe; and displacing said cementitious slurry out of said pipe and into an annulus surrounding said pipe with a displacement fluid. - View Dependent Claims (15, 16, 17)
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Specification