Self-degrading cement compositions and methods of using self-degrading cement compositions in subterranean formations

Abstract

Fracturing fluids for stimulating subterranean formations are provided. More particularly, fracturing fluids comprising self-degrading cement compositions are provided. An example of a composition is a fracturing fluid comprising a self-degrading cement composition that comprises an acid source, a base source, a water source, and a degradable material. Certain embodiments of the fracturing fluids also may comprise Newberyite, among other things.

1 . A fracturing fluid comprising a self-degrading cement composition that comprises an acid source, a base source, a water source, and a degradable material.  
   
   
       2 . The fracturing fluid of  claim 1  wherein the acid source comprises at least one of the following: magnesium chloride, potassium phosphate monobasic, ammonium phosphate monobasic, and phosphoric acid.  
   
   
       3 . The fracturing fluid of  claim 1  wherein the base source comprises at least one of the following: magnesium oxide and ammonia.  
   
   
       4 . The fracturing fluid of  claim 1  wherein the degradable material comprises at least one of the following: an aliphatic polyester; a polysaccharide; a poly(lactide); a poly(glycolide); a poly(ε-caprolactone); a protein; a poly(hydroxybutyrate); a poly(anhydride); an aliphatic polycarbonate; an ortho ester; a poly(orthoester); a poly(vinylacetate); a poly(hydroxy ester ether); a poly(amino acid); poly(ethylene oxide); chitin; chitosan; a polyphosphazene; a poly ether ester; a polyester amide; or a copolymer or blend thereof.  
   
   
       5 . The fracturing fluid of  claim 1  wherein the degradable material comprises polyamide.  
   
   
       6 . The fracturing fluid of  claim 1  wherein the degradable material comprises at least one of the following: a nylon, a poly(caprolactam), or a mixture thereof.  
   
   
       7 . The fracturing fluid of  claim 1  wherein the degradable material comprises poly(lactic) acid.  
   
   
       8 . The fracturing fluid of  claim 1  wherein the acid source comprises potassium phosphate monobasic, the base source comprises magnesium oxide, and the degradable material comprises poly(lactic acid).  
   
   
       9 . The fracturing fluid of  claim 1 , further comprising Newberyite, wherein the acid source comprises potassium phosphate monobasic, the base source comprises magnesium oxide, the degradable material comprises poly(lactic acid).  
   
   
       10 . The fracturing fluid of  claim 1  wherein the acid source comprises ammonium phosphate monobasic, the base source comprises magnesium oxide, and the degradable material comprises poly(lactic acid).  
   
   
       11 . The fracturing fluid of  claim 10  further comprising Newberyite.  
   
   
       12 . The fracturing fluid of  claim 1  wherein the acid source comprises magnesium sulfate, the base source comprises magnesium oxide, and the degradable material comprises poly(lactic acid).  
   
   
       13 . The fracturing fluid of  claim 12  further comprising Newberyite.  
   
   
       14 . The fracturing fluid of  claim 1  wherein the degradable material comprises a fiber that comprises an outer shell and a core liquid.  
   
   
       15 . The fracturing fluid of  claim 14  wherein the outer shell comprises a degradable polymer that is susceptible to hydrolytic degradation.  
   
   
       16 . The fracturing fluid of  claim 15  wherein the core liquid is capable of at least partially facilitating the hydrolysis of the degradable polymer.  
   
   
       17 . The fracturing fluid of  claim 15  wherein the degradable polymer comprises poly(lactic acid).  
   
   
       18 . The fracturing fluid of  claim 14  wherein the degradable material comprises a coating on the outer shell.  
   
   
       19 . The fracturing fluid of  claim 14  wherein the outer shell is non-porous.  
   
   
       20 . The fracturing fluid of  claim 14 , further comprising Newberyite.