US 8,297,357 B2 · Acid-soluble cement compositions comprising cement kiln dust and/or a natural pozzolan and methods of use

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.

Claims45

Dependent claims

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, 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.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/825,004Filed 28 Jun 2010 · continuation in part

Priority

9 Sep 2005

Published

US 2010/0044043 A111 Nov 2010

Granted

30 Oct 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

C09K 8/46
Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells: containing inorganic…
C04B 28/021
Containing hydraulic cements other than calcium sulfates: ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g.…
C04B 28/32
Containing magnesium cements or similar cements: magnesium oxychloride cements, e.g. Sorel cement
C04B 40/0092
Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or…:…

Family

Application11/223,669Parent of this continuation-in-part · filed 9 Sep 2005

Application12/034,886Parent of this division · filed 21 Feb 2008

US 7,445,669 B2Parent of this continuation-in-part · filed 4 Nov 2008

Application12/349,676Parent of this continuation-in-part · filed 7 Jan 2009

US 7,478,675 B2Parent of this division · filed 20 Jan 2009

Application12/420,630Parent of this continuation-in-part · filed 8 Apr 2009

Application12/606,381Parent of this continuation-in-part · filed 27 Oct 2009

US 7,631,692 B2Parent of this continuation-in-part · filed 15 Dec 2009

US 7,674,332 B2Parent of this continuation-in-part · filed 9 Mar 2010

US 2010/0282466 A1Pre-grant publication · published 11 Nov 2010

US 7,743,828 B2Parent of this continuation-in-part

Application12/349,676Parent of this division

Application12/034,886Parent of this continuation-in-part

US 2007/0056475 A1Published application

US 2008/0156491 A1Published application

US 2009/0114126 A1Published application

US 2009/0200029 A1Published application

US 2010/0044043 A1Published application

US 8,297,357 B2This patent

From the US filing history. Foreign family members aren’t listed.

Acid-soluble cement compositions comprising cement kiln dust and/or a natural pozzolan and methods of use

Life of this patent

Acid-soluble cement compositions comprising cement kiln dust and/or a natural pozzolan and methods of use

Life of this patent

Abstract

Claims45