Methods of plugging wells
First Claim
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1. A method of forming a plug in a well bore containing water comprising the steps of:
- (a) dropping into said well bore a cementitious material which will delayedly react with said water therein to form an impermeable solid and which has been formed into agglomerates of sufficient weight to sink through said water and other fluids and materials in said well bore, said agglomerates being dropped in a quantity sufficient to form a first mass of said agglomerates in said well bore; and
then (b) allowing said mass of said agglomerates to react with said water in said well bore to thereby form an impermeable solid plug therein.
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Abstract
Methods of forming one or more plugs in a well bore are provided. The methods basically comprise the steps of dropping into the well bore a cementitious material which will delayedly react with water therein to form an impermeable solid and which has been formed into agglomerates of sufficient weight to sink through the water and other fluids and materials in the well bore. The agglomerates are dropped in a quantity sufficient to form a mass of the agglomerates in the well bore. Thereafter, the mass of agglomerates is allowed to react with the water in the well bore and set into an impermeable solid plug therein.
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Citations
20 Claims
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1. A method of forming a plug in a well bore containing water comprising the steps of:
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(a) dropping into said well bore a cementitious material which will delayedly react with said water therein to form an impermeable solid and which has been formed into agglomerates of sufficient weight to sink through said water and other fluids and materials in said well bore, said agglomerates being dropped in a quantity sufficient to form a first mass of said agglomerates in said well bore; and
then(b) allowing said mass of said agglomerates to react with said water in said well bore to thereby form an impermeable solid plug therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of forming a first plug on or near the natural bottom of a well bore containing water and one or more plugs at one or more locations above the natural bottom comprising the steps of:
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(a) dropping into said well bore a cementitious material which will delayedly react with said water to form an impermeable solid and which has been formed into agglomerates of sufficient weight to sink through said water and other fluids and materials in said well bore, said agglomerates being dropped in a quantity sufficient to form a first mass of said agglomerates on or near the natural bottom of said well bore;
(b) forming an artificial bottom in said well bore above said first mass of said agglomerates;
(c) dropping additional agglomerates into said well bore in a quantity sufficient to form a second mass of said agglomerates adjacent to said artificial bottom in said well bore;
(d) repeating steps (b) and (c) if necessary to form one or more additional masses of said agglomerates above said second mass of said agglomerates; and
(e) allowing said masses of said agglomerates formed in said well bore to react with said water in said well bore to thereby form impermeable solid plugs therein. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification