Acid-soluble cement compositions comprising cement kiln dust and/or a natural pozzolan and methods of use
First Claim
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1. A method of cementing comprising:
- placing an acid-soluble cement composition in a subterranean formation, the acid-soluble cement composition comprising;
0% to about 20% hydraulic cement by weight of cementitious components present in the acid-soluble cement composition,a component selected from the group consisting of cement kiln dust, pumicite, and a combination thereof, andwater;
allowing the acid-soluble cement composition to set; and
contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition.
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Abstract
The present invention relates to acid-soluble cement compositions that comprise cement kiln dust (“CKD”) and/or a natural pozzolan and associated methods of use. An embodiment includes a method of cementing comprising: placing an acid-soluble cement composition in a subterranean formation, wherein the acid-soluble cement composition comprises a hydraulic cement, a component selected from the group consisting of CKD, pumicite, and a combination thereof, and water; allowing the acid-soluble cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition.
376 Citations
45 Claims
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1. A method of cementing comprising:
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placing an acid-soluble cement composition in a subterranean formation, the acid-soluble cement composition comprising; 0% to about 20% hydraulic cement by weight of cementitious components present in the acid-soluble cement composition, a component selected from the group consisting of cement kiln dust, pumicite, and a combination thereof, and water; allowing the acid-soluble cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of cementing comprising:
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placing an acid-soluble cement composition in a subterranean formation, the acid-soluble cement composition comprising; 0% to about 20% Portland cement by weight of cementitious components present in the acid-soluble cement composition, cement kiln dust, an acid-soluble filler, and water; allowing the cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of cementing comprising:
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placing an acid-soluble cement composition in a subterranean formation, the acid-soluble cement composition comprising; hydraulic cement, wherein the hydraulic cement comprises a Sorel cement, a component selected from the group consisting of cement kiln dust, pumicite, and a combination thereof, and water; allowing the acid-soluble cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A method of cementing comprising:
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placing an acid-soluble cement composition in a subterranean formation, the acid-soluble cement composition comprising; hydraulic cement, wherein the hydraulic cement comprises a magnesium oxide and a magnesium chloride a component selected from the group consisting of cement kiln dust, pumicite, and a combination thereof, and water; allowing the acid-soluble cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition. - View Dependent Claims (36, 37, 38, 39, 40)
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41. A method of cementing comprising:
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placing an acid-soluble cement composition in a subterranean formation, the acid-soluble cement composition comprising; hydraulic cement, pumicite in an amount of about 20% to about 100% by weight of cementitious components present in the acid-soluble cement composition, and water; allowing the acid-soluble cement composition to set; and contacting the set acid-soluble cement composition with an acid to dissolve the set acid-soluble cement composition. - View Dependent Claims (42, 43, 44, 45)
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Specification