Abstract: A process and process line is provided for preparing a friction-reduced hydraulic fracturing fluid at a central location which can be readily transported to an oil or gas well in a formation at a well site, comprising: preparing a mixture of polymer and water at the central location by shearing the polymer in the water in a high shear environment to create the friction-reduced hydraulic fracturing fluid; pumping the friction-reduced hydraulic fracturing fluid through a series of pumps and pipelines to the well site; and injecting the hydraulic fracturing fluid into the oil or gas well at a pressure sufficient to cause fracturing of the formation.

Abstract: A process and process line for treating water containing hydrogen sulfide for use as a hydraulic fracturing fluid is provided, to practice the following steps: separating a gaseous portion containing hydrogen sulfide from the water to form a first degassed water product; introducing the first degassed water product into a mechanical gas stripping unit and treating the first degassed water product with a stripper gas; recovering from the mechanical gas stripping unit at least one overhead vapor stream containing hydrogen sulfide and a stripped water stream as a bottom stream; degassing the stripped water stream in a degassing tank to produce a second degassed water product; and treating the second degassed water product with a hydrogen sulfide scavenger to produce a sweet water product having substantially reduced hydrogen sulfide.

Abstract: A process and process line for treating water containing hydrogen sulfide for use as a hydraulic fracturing fluid is provided, to practice the following steps: separating a gaseous portion containing hydrogen sulfide from the water to form a first degassed water product; introducing the first degassed water product into a mechanical gas stripping unit and treating the first degassed water product with a stripper gas; recovering from the mechanical gas stripping unit at least one overhead vapor stream containing hydrogen sulfide and a stripped water stream as a bottom stream; degassing the stripped water stream in a degassing tank to produce a second degassed water product; and treating the second degassed water product with a hydrogen sulfide scavenger to produce a sweet water product having substantially reduced hydrogen sulfide.

Abstract: A method of removing hydrogen sulfide from water is provided, comprising providing water containing a first amount of hydrogen sulfide and having a first pH; adding a stripper gas to the water to form a mixture; agitating the mixture; and separating a gaseous portion from the mixture to form a water product, the water product containing a second amount of hydrogen sulfide that is less than the first amount of hydrogen sulfide.