Surfactant Wash Treatment Fluids and Associated Methods

Abstract

Of the many methods and compositions provided herein, in one embodiment, the invention provides a method comprising: providing an oil-wet well bore surface; providing a surfactant wash treatment fluid that comprises an acid-compatible surfactant, an acid and/or an acid-generating component, and an aqueous fluid; contacting the oil-wet well bore surface with the surfactant wash treatment fluid; allowing the oil-wet well bore surface to become water-wet; and producing fluids from the formation. In another embodiment, the invention provides a surfactant wash treatment fluid for use in a subterranean formation comprising an aqueous fluid, an acid-compatible surfactant, an acid and/or an acid-generating component.

1 . A method comprising:
 drilling a well bore using an oil-based fluid or an aqueous fluid comprising an oily component;   creating an oil-wet well bore surface;   providing a surfactant wash treatment fluid that comprises an acid-compatible surfactant, an acid and/or an acid-generating component, and an aqueous fluid;   contacting the oil-wet well bore surface with the surfactant wash treatment fluid; and   allowing the oil-wet well bore surface to become water wet.   
   
   
       2 . The method of  claim 1  further comprising allowing production to occur. 
   
   
       3 . The method of  claim 1  wherein the well bore is an injection well. 
   
   
       4 . The method of  claim 1  wherein the surfactant wash treatment fluid comprises an additive chosen from the group consisting of: corrosion inhibitors; corrosion inhibitor intensifiers; bactericides; antioxidants; enzymes; salts; weighting agents; viscosifiers; pH-adjusting agents; pH-buffers; oxidizing agents; lost circulation materials; scale inhibitors; surfactants; clay stabilizers; paraffin inhibitors; asphaltene inhibitors; penetrating agents; clay control additives; iron control additives; chelators; reducers; oxygen scavengers; sulfide scavengers; emulsifiers; foamers; gases; gelling agents; viscosifiers; derivatives thereof; and combinations thereof. 
   
   
       5 . The method of  claim 1  wherein the aqueous fluid is comprises a brine chosen from the group consisting of: NaCl brines, NaBr brines, CaCl 2  brines, CaBr 2  brines, ZrBr 2  brines, sodium formate, potassium formate, caesium formate, and combinations thereof. 
   
   
       6 . The method of  claim 1  wherein the acid comprises an acid selected from the group consisting of: inorganic acids; hydrochloric acid; hydrofluoric acid; hydrobromic acid; sulfuric acid; phosphoric acid; nitric acid; organic acids; acetic acid; formic acid; glycolic acid; lactic acid; amino acid; dibasic acid; aromatic acids; aliphatic acids; derivatives thereof; and combinations thereof. 
   
   
       7 . The method of  claim 1  wherein the acid-generating component comprises a component selected from the group consisting of: poly(ortho esters); orthoesters; esters of organic acids; esters of formic acid; esters of acetic acid; esters of lactic acid; esters of oxalic acid; esters; aliphatic polyesters; poly(lactides); poly(glycolides); poly(ε-caprolactones); poly(hydroxybutyrates); poly(anhydrides); poly(amino acids); poly lactic acid; ethylene glycol monoformate; ethylene glycol diformate; diethylene glycol diformate; glyceryl monoformate; glyceryl diformate; glyceryl triformate; triethylene glycol diformate; formate esters of pentaerythritol; ethyl lactate; methyl lactate; copolymers thereof; derivatives thereof; and combinations thereof. 
   
   
       8 . The method of  claim 1  wherein the acid-generating component generates an alcohol down hole. 
   
   
       9 . The method of  claim 1  wherein the acid-generating component has been reacted with a reactive material chosen from the group consisting of: mineral acids; organic acids; acidic anhydrides; p-toluenesulfonic acid; NaOH; Na 2 CO 3 ; NaHCO 3 ; and Mg(OH) 2 . 
   
   
       10 . The method of  claim 1  wherein the acid-compatible surfactant is included in an amount of up to about 100% of the surfactant wash treatment fluid. 
   
   
       11 . The method of  claim 8  wherein the acid-compatible surfactant is included in an amount of up from about 0.1% to about 20%. 
   
   
       12 . The method of  claim 1  wherein the acid-compatible surfactant comprises a surfactant chosen from the group consisting of: fatty betaines; carboxy betaines; lauramidopropyl betaine; ethylene oxide propylene oxide block copolymers; fatty amines; fatty polyamines; hydrophilically modified amines; polyamines with HLB values of from about 3 to about 10; ethoxylated derivatives of hydrophilically modified amines; ethoxylated derivatives of polyamines; propoxylated derivatives of hydrophilically modified amines; propoxylated derivatives of polyamines; ethoxylated tallow triamine; ethoxylated oleyl amine; soya ethylenediamine; tallow diethylene triamine; soya amines; ethoxylated soya amines; and derivatives or combinations of these. 
   
   
       13 . A method comprising:
 drilling a well bore in a subterranean formation using a fluid that is oil-based or an aqueous-based fluid that comprises an oily component wherein oil-wet solids are deposited on a surface within the well bore;   providing a surfactant wash treatment fluid that comprises an aqueous fluid, and an acid-compatible surfactant; and acid and/or an acid-generating component;   introducing the surfactant wash treatment fluid into the subterranean formation; and   allowing production to occur.   
   
   
       14 . A surfactant wash treatment fluid for use in a subterranean formation comprising an aqueous fluid, an acid-compatible surfactant, an acid and/or an acid-generating component. 
   
   
       15 . The surfactant wash treatment fluid of  claim 14  wherein the acid comprises an acid selected from the group consisting of: inorganic acids; hydrochloric acid; hydrofluoric acid; hydrobromic acid; sulfuric acid; phosphoric acid; nitric acid; organic acids; acetic acid; formic acid; glycolic acid; lactic acid; amino acid; dibasic acid; aromatic acids; aliphatic acids; derivatives thereof; and combinations thereof. 
   
   
       16 . The surfactant wash treatment fluid of  claim 14  wherein the acid-generating component comprises a component selected from the group consisting of: poly(ortho esters); orthoesters; esters of organic acids; esters of formic acid; esters of acetic acid; esters of lactic acid; esters of oxalic acid; esters; aliphatic polyesters; poly(lactides); poly(glycolides); poly(ε-caprolactones); poly(hydroxybutyrates); poly(anhydrides); poly(amino acids); poly lactic acid; ethylene glycol monoformate; ethylene glycol diformate; diethylene glycol diformate; glyceryl monoformate; glyceryl diformate; glyceryl triformate; triethylene glycol diformate; formate esters of pentaerythritol; ethyl lactate; methyl lactate; copolymers thereof; derivatives thereof; and combinations thereof. 
   
   
       17 . The surfactant wash treatment fluid of  claim 14  wherein the acid-generating component has been reacted with a reactive material chosen from the group consisting of: mineral acids; organic acids; acidic anhydrides; p-toluenesulfonic acid; NaOH; Na 2 CO 3 ; NaHCO 3 ; and Mg(OH) 2 . 
   
   
       18 . The surfactant wash treatment fluid of  claim 14  wherein the acid-compatible surfactant is included in an amount of up to about 100% of the surfactant wash treatment fluid. 
   
   
       19 . The surfactant wash treatment fluid of  claim 14  wherein the acid-compatible surfactant is included in an amount of up from about 0.1% to about 20%. 
   
   
       20 . The surfactant wash treatment fluid of  claim 14  wherein the acid-compatible surfactant comprises a surfactant chosen from the group consisting of: fatty betaines; carboxy betaines; lauramidopropyl betaine; ethylene oxide propylene oxide block copolymers; fatty amines; fatty polyamines; hydrophilically modified amines; polyamines with HLB values of from about 3 to about 10; ethoxylated derivatives of hydrophilically modified amines; ethoxylated derivatives of polyamines; propoxylated derivatives of hydrophilically modified amines; propoxylated derivatives of polyamines; ethoxylated tallow triamine; ethoxylated oleyl amine; soya ethylenediamine; tallow diethylene triamine; soya amines; ethoxylated soya amines; and derivatives or combinations of these.