Methods for Treating Wellbore and Wellbore Operation Fluids

Abstract

Method comprising providing a portion of a subterranean formation having a first formation bacterial count as a result of the presence of a plurality of bacteria in the formation; providing a wellbore treatment fluid having a first wellbore treatment fluid bacterial count as a result of the presence of a plurality of bacteria in the wellbore treatment fluid; combining the wellbore treatment fluid with a a plurality of bacteriocins; placing the wellbore treatment fluid into a wellbore in the portion of the subterranean formation; reducing the first formation bacterial count to a second formation bacterial count; and reducing the first wellbore treatment fluid bacterial count to a second wellbore treatment fluid bacterial count.

The invention claimed is: 
     
         1 . A method comprising:
 providing a portion of a subterranean formation having a first formation bacterial count as a result of the presence of a plurality of bacteria in the formation;   providing a wellbore treatment fluid having a first wellbore treatment fluid bacterial count as a result of the presence of a plurality of bacteria in the wellbore treatment fluid;   combining the wellbore treatment fluid with a a plurality of bacteriocins;   placing the wellbore treatment fluid into a wellbore in the portion of the subterranean formation;   reducing the first formation bacterial count to a second formation bacterial count; and   reducing the first wellbore treatment fluid bacterial count to a second wellbore treatment fluid bacterial count.   
     
     
         2 . The method of  claim 1 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins, gram-negative bacteria produced bacteriocins, or a combination thereof. 
     
     
         3 . The method of  claim 1 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins selected from the group consisting of: acidocin; actagardine; bovicin; brochocin; butyrivibriocin; carnobacteriocin; carnocin; carnocyclin; circularin; closticin; coagulin; curvacin; curvaticin; cytolysin; divercin; divergicin; duramycin; enterocin; entianin; epicidin; epidermin; epilancin; ericin; gallidermin; garvicin; gassericin; haloduracin; hiracin; hominicin; ipomicin; lactacin; lactoccin; lactocyclin; lantibiotic; leucocin; lichenicidin; listeriocin; lysostaphin; mesentericin; microbisporicin; mundticin; mutacin; nisin; paenibacillin; pediocin; pep5 lantibiotic; piscicolin; plantaricin; sakacin; salivaricin; smb; staphylococcin; and any combination thereof. 
     
     
         4 . The method of  claim 1 , wherein the bacteriocins are gram-negative bacteria produced bacteriocins selected from the group consisting of: capistruin; colicin; microcin; pyrocin; serracin; and any combination thereof. 
     
     
         5 . The method of  claim 1 , wherein the wellbore treatment fluid further comprises a chelating agent selected from the group consisting of: EDTA; CaEDT; CaNa 2 EDTA; alkyldiamine tetraacetate; EGTA; citrate; and any combination thereof. 
     
     
         6 . The method of  claim 5 , wherein the chelating agent is present in an amount from about 0.1 mM to about 30 mM of the wellbore treatment fluid. 
     
     
         7 . The method of  claim 1 , wherein the wellbore treatment fluid further comprises an ionic surfactant selected from the group consisting of: an emulsifier; a fatty acid; a quaternary compound; an anionic surfactant; an amphoteric surfactant; and any combination thereof. 
     
     
         8 . The method of  claim 1 , wherein the wellbore treatment fluid further comprises a nonionic surfactant selected from the group consisting of: a polyoxyalkylphenol; a polyoxyalkysorbitan; a glyceride; and any combination thereof. 
     
     
         9 . A method comprising:
 providing a portion of a subterranean formation;   providing a flowback fluid that has previously been present in a portion of a subterranean formation;
 wherein the flowback fluid has a first bacterial count as a result of the presence of a plurality of bacteria; 
   combining the flowback fluid with a plurality of bacteriocins; and   reducing the first bacterial count to a second bacterial count.   
     
     
         10 . The method of  claim 9 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins, gram-negative bacteria produced bacteriocins, or a combination thereof. 
     
     
         11 . The method of  claim 9 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins selected from the group consisting of: acidocin; actagardine; bovicin; brochocin; butyrivibriocin; carnobacteriocin; carnocin; carnocyclin; circularin; closticin; coagulin; curvacin; curvaticin; cytolysin; divercin; divergicin; duramycin; enterocin; entianin; epicidin; epidermin; epilancin; ericin; gallidermin; garvicin; gassericin; haloduracin; hiracin; hominicin; ipomicin; lactacin; lactoccin; lactocyclin; lantibiotic; leucocin; lichenicidin; listeriocin; lysostaphin; mesentericin; microbisporicin; mundticin; mutacin; nisin; paenibacillin; pediocin; pep5 lantibiotic; piscicolin; plantaricin; sakacin; salivaricin; smb; staphylococcin; and any combination thereof. 
     
     
         12 . The method of  claim 9 , wherein the bacteriocins are gram-negative bacteria produced bacteriocins selected from the group consisting of: capistruin; colicin; microcin; pyrocin; serracin; and any combination thereof. 
     
     
         13 . The method of  claim 9 , wherein the flowback fluid further comprises a chelating agent selected from the group consisting of: EDTA; CaEDTA; CaNa 2 EDTA; alkyldiamine tetraacetate; EGTA; citrate; and any combination thereof. 
     
     
         14 . The method of  claim 9 , wherein the flowback fluid further comprises an ionic surfactant selected from the group consisting of: an emulsifier; a fatty acid; a quaternary compound; an anionic surfactant; an amphoteric surfactant; and
 any combination thereof.   
     
     
         15 . The method of  claim 9 , wherein the flowback fluid further comprises a nonionic surfactant selected from the group consisting of: a polyoxyalkylphenol; a polyoxyalkysorbitan; a glyceride; and any combination thereof. 
     
     
         16 . A method comprising:
 providing a portion of a subterranean formation having a first formation bacterial count as a result of the presence of a plurality of bacteria in the formation;
 providing a wellbore treatment fluid having a first wellbore treatment fluid bacterial count as a result of the presence of a plurality of bacteria in the wellbore treatment fluid; 
 providing particulates having a coating of bacteriocins thereon and a coating of degradable material atop of the coating of bacteriocins;
 wherein the degradable coating is a polysaccharide, a cellulose, a chitin, a chitosan, a protein, an aliphatic polyester, a poly(lactide), a poly(glycolide), a poly(ε-caprolactone), a poly(hydrobutyrate), a poly(anhydride), an aliphatic polycarbonate, a poly(orthoester), a poly(amino acid), a poly(ethylene oxide), a poly(vinylidene chloride), a polyphosphazene, or a combination thereof combining the wellbore treatment fluid with a plurality of bacteriocins; 
 
   combining the wellbore treatment fluid with the coated particulates;   placing the wellbore treatment fluid comprising the coated particulates into a portion of the subterranean formation;   releasing the bacteriocins as the degradable coating degrades;   reducing the first formation bacterial count to a second formation bacterial count; and   reducing the first wellbore treatment fluid bacterial count to a second wellbore treatment fluid bacterial count.   
     
     
         17 . The method of  claim 16 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins, gram-negative bacteria produced bacteriocins, or a combination thereof. 
     
     
         18 . The method of  claim 16 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins selected from the group consisting of: acidocin; actagardine; bovicin; brochocin; butyrivibriocin; carnobacteriocin; carnocin; carnocyclin; circularin; closticin; coagulin; curvacin; curvaticin; cytolysin; divercin; divergicin; duramycin; enterocin; entianin; epicidin; epidermin; epilancin; ericin; gallidermin; garvicin; gassericin; haloduracin; hiracin; hominicin; ipomicin; lactacin; lactoccin; lactocyclin; lantibiotic; leucocin; lichenicidin; listeriocin; lysostaphin; mesentericin; microbisporicin; mundticin; mutacin; nisin; paenibacillin; pediocin; pep5 lantibiotic; piscicolin; plantaricin; sakacin; salivaricin; smb; staphylococcin; and any combination thereof. 
     
     
         19 . The method of  claim 16 , wherein the bacteriocins are gram-negative bacteria produced bacteriocins selected from the group consisting of: capistruin; colicin; microcin; pyrocin; serracin; and any combination thereof. 
     
     
         20 . The method of  claim 16 , wherein the bacteriocins are gram-positive bacteria produced bacteriocins and gram-negative bacteria produced bacteriocins and are in a combined presence of about 0.1 μg/ml to about 300 μg/ml of the wellbore treatment fluid.