US2014208983A1PendingUtilityA1

Wellbore Servicing Compositions and Methods of Using Same

Assignee: HALLIBURTON ENERGY SERV INCPriority: Jan 30, 2007Filed: Mar 31, 2014Published: Jul 31, 2014
Est. expiryJan 30, 2027(~0.5 yrs left)· nominal 20-yr term from priority
Y02W30/91C04B 2103/10C04B 28/06C09K 8/467
56
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Claims

Abstract

A method of servicing a wellbore in contact with a subterranean formation, comprising placing into a wellbore a composition comprising a calcium aluminate cement and a polyvalent cation-containing compound, and allowing the composition to set. A method of increasing the thickening time of a calcium aluminate cement comprising contacting the calcium aluminate cement with a polyvalent cation-containing compound. A method of adjusting the thickening time of a calcium aluminate cement comprising contacting the calcium aluminate cement with a polyvalent cation-containing compound and at least one other set modifier.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A wellbore servicing composition comprising:
 a calcium aluminate cement;   a polyvalent cation-containing compound; and   at least one other set modifier.   
     
     
         2 . The wellbore servicing composition of  claim 1 , wherein the polyvalent cation-containing compound comprises a polyvalent metal salt. 
     
     
         3 . The wellbore servicing composition of  claim 2 , wherein the polyvalent metal salt comprises an alkaline earth metal salt, a transition metal salt, or combinations thereof 
     
     
         4 . The wellbore servicing composition of  claim 2 , wherein the polyvalent metal salt comprises an alkaline earth metal, wherein the alkaline earth metal salt comprises calcium chloride, magnesium chloride, calcium nitrate, or combinations thereof 
     
     
         5 . The wellbore servicing composition of  claim 2 , wherein the polyvalent metal salt comprises a transition metal salt, wherein the transition metal salt comprises zirconium. 
     
     
         6 . The wellbore servicing composition of  claim 2 , wherein the polyvalent metal salt comprises a cobalt (II or III) salt, a nickel (II) salt, or combinations thereof 
     
     
         7 . The wellbore servicing composition of  claim 2 , wherein the polyvalent metal salt is present in an amount of from about 0.3 wt. % to about 10 wt. % based on the calcium aluminate content of the calcium aluminate cement. 
     
     
         8 . The wellbore servicing composition of  claim 1 , wherein the at least one other set modifier comprises a monovalent metal salt, an organic acid, or combinations thereof 
     
     
         9 . The wellbore servicing composition of  claim 1 , wherein the at least one other set modifier comprises a monovalent metal salt, wherein the monovalent metal salt comprises a soluble salt of sodium, lithium, potassium, or combinations thereof 
     
     
         10 . The wellbore servicing composition of  claim 1 , wherein the at least one other set modifier comprises an organic acid, wherein the organic acid comprises citric acid, tartaric acid, oxalic acid, gluconic acid, oleic acid, phosphoric acid, uric acid, or combinations thereof 
     
     
         11 . The wellbore servicing composition of  claim 1 , wherein the polyvalent cation-containing compound is present in an amount of from about 0.1 wt. % to about 10 wt. % based on the calcium aluminate content of the calcium aluminate cement. 
     
     
         12 . The wellbore servicing composition of  claim 1 , wherein the composition comprises at least 45 weight percent calcium aluminate cement. 
     
     
         13 . The wellbore servicing composition of  claim 12 , wherein the calcium aluminate cement comprises from about 35% to about 80% by weight calcium aluminate. 
     
     
         14 . The wellbore servicing composition of  claim 1 , wherein the composition has a thickening time of greater than about 1 hour at a temperature of greater than about 200° F. 
     
     
         15 . The wellbore servicing composition of  claim 1 , wherein the composition sets at a temperature of from about 50° F. to about 350° F. 
     
     
         16 . The wellbore servicing composition of  claim 1 , wherein the composition further comprises a phosphate salt. 
     
     
         17 . The wellbore servicing composition of  claim 16 , wherein the phosphate salt comprises a polymeric alkali metal salt. 
     
     
         18 . The wellbore servicing composition of  claim 1 , wherein the composition further comprises flyash. 
     
     
         19 . The wellbore servicing composition of  claim 18 , wherein the flyash comprises Class F flyash. 
     
     
         20 . The wellbore servicing composition of  claim 2 , wherein the polyvalent metal salt comprises a cobalt (II or III) salt, a nickel (II) salt, or combinations thereof, wherein the composition comprises at least 45 weight percent calcium aluminate cement, wherein the calcium aluminate cement comprises from about 35% to about 80% by weight calcium aluminate, and wherein the polyvalent cation-containing compound is present in an amount of from about 0.1 wt. % to about 10 wt. % based on the calcium aluminate content of the calcium aluminate cement.

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