Fracturing fluids for delayed flow back operations

A method for fracturing a subterranean formation comprising:

• a. pumping an anti-bacterial fracturing fluid composition down a wellbore to a subterranean formation;
• b. permitting the fracturing fluid composition to gel;
• c. pumping the fracturing fluid composition against the subterranean formation at sufficient rate and pressure to fracture the formation;
• d. breaking the fracturing fluid composition gel;
• e. leaving the fracturing fluid composition in the formation for at least 28 days;
• and
• f. subsequently flowing the fracturing fluid composition out of the formation;
• where the anti-bacterial fracturing fluid composition comprises:
• i) from about 0.12 to about 0.75% bw of at least one hydratable polymer;
• ii) from about 0.05 to about 3.0% bv of at least one water wetting control agent;
• iii) from about 0.5 to about 12.0% bw of at least one clay control agent;
• iv) from about 0.001 to about 2.0% bw of at least one microbe growth control agent;
• v) from about 0.05 to about 1.0% bv of at least one scale inhibitor;
• vi) from about 0.0001 to about 0.72% bw of at least one breaking agent;
• vii) at least one crosslinking agent;
• and
• vii) from about 0.001 to about 1.0% bv of at least one biocide different from iv) the microbe growth control agent;
• where the anti-bacterial fracturing fluid composition controls both sulfate-reducing bacteria and bio-polysaccharide (slime) production, and where all proportions are based on the total fracturing fluid composition.

A method for fracturing a subterranean formation comprising:

• a. pumping a bacterial fracturing fluid composition down a wellbore to a subterranean formation;
• b. permitting the fracturing fluid composition to gel;
• c. pumping the fracturing fluid composition against the subterranean formation at sufficient rate and pressure to fracture the formation;
• d. breaking the fracturing fluid composition gel;
• e. leaving the fracturing fluid composition in the formation for at least 28 days;
• and
• f. subsequently flowing the fracturing fluid composition out of the formation;
• where the bacterial fracturing fluid composition comprises:
• i) at least one polysaccharide hydratable polymer;
• ii) at least one water wetting control agent;
• iii) at least one clay control agent;
• iv) at least one microbe growth control agent;
• v) at least one scale inhibitor;
• vi) at least one breaking agent;
• and
• vi) at least one polysaccharide-decomposing bacteria.

A method for fracturing a subterranean formation comprising:

• a. pumping a bacterial fracturing fluid composition down a wellbore to a subterranean formation;
• b. permitting the fracturing fluid composition to gel;
• c. pumping the fracturing fluid composition against the subterranean formation at sufficient rate and pressure to fracture the formation;
• d. breaking the fracturing fluid composition gel;
• e. leaving the fracturing fluid composition in the formation for at least 28 days;
• and
• f. subsequently flowing the fracturing fluid composition out of the formation;
• where the bacterial fracturing fluid composition comprises:
• i) from about 0.12 to about 0.75% bw of at least one polysaccharide hydratable polymer;
• ii) from about 0.05 to about 3.0% bv of at least one water wetting control agent;
• iii) from about 0.5 to about 12.0% bw of at least one clay control agent;
• iv) from about 0.001 to about 2.0% bw of at least one microbe growth control agent;
• v) from about 0.05 to about 1.0% bv of at least one scale inhibitor;
• vi) from about 0.0001 to about 0.72% bw of at least one breaking agent;
• vii) at least one crosslinking agent;
• and
• viii) at least one polysaccharide-decomposing bacteria;
• where all proportions are based on the total fracturing fluid composition.