Methods of plugging and abandoning a well using compositions comprising cement kiln dust and pumicite
First Claim
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1. A plugging composition comprising:
- a cementitious component comprising;
cement kiln dust in an amount in a range of from about 5% to about 100% by weight of the cementitious component;
pumicite in an amount in a range of from about 5% to about 100% by weight of the cementitious component; and
0% to about 24% of Portland cement by weight of the cementitious component; and
water;
wherein the plugging composition is essentially free of latex.
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Abstract
The present invention is directed to plug-and-abandon operations that use plugging compositions comprising cement kiln dust, pumicite, and/or lime. An embodiment includes a method of plugging a well bore for abandonment comprising: placing a plugging composition in the well bore, the plugging composition comprising: cement kiln dust in an amount of about 5% to about 100% by weight of cementitious components, pumicite in an amount of about 5% to about 100% by weight of cementitious components, 0% to about 24% of Portland cement by weight of cementitious components, and water; and allowing the plugging composition to set and form a plug.
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Citations
20 Claims
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1. A plugging composition comprising:
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a cementitious component comprising; cement kiln dust in an amount in a range of from about 5% to about 100% by weight of the cementitious component; pumicite in an amount in a range of from about 5% to about 100% by weight of the cementitious component; and 0% to about 24% of Portland cement by weight of the cementitious component; and water; wherein the plugging composition is essentially free of latex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A plugging composition comprising:
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a cementitious component consisting essentially of cement kiln dust, pumicite, and lime; and water; wherein the plugging composition is essentially free of Portland cement; and wherein the plugging composition is essentially free of latex. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A plugging composition comprising:
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a cementitious component consisting essentially; cement kiln dust in an amount in a range of from about 25% to about 75% by weight of the cementitious component; pumicite in an amount in a range of from about 25% to about 75% by weight of the cementitious component; and hydrated lime in an amount in a range of from about 5% to about 20% by weight of the cementitious component; a dispersant; and water in an amount in a range of from about 40% to about 150% by weight of the cementitious component, wherein the plugging composition has a density in a range of from about 8 pounds per gallon to about 16 pounds per gallon, wherein the plugging composition is free of Portland cement, wherein the plugging composition has a 48-hour crush strength at 160°
F. in a range of from about 1013 psi to about 2040 psi, andwherein the plugging composition is essentially free of latex.
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Specification