Types of Hydraulic Fracturing Fluids

Oil-based fluids Water sensitive increased fire hazard 

Noncomplex gelled water fracture Simple technology 

Complexed gelled water fracture Often the best solution 

In situ precipitation technique Reduces the concentration of the scale-forming ingredients [858,859] 

Certainly the optimal techniques depend on the type of reservoir. Reports that compare the techniques in a related environment are available. In the Kansas Hugoton field (Mesa Limited Partnership), several hydraulic fracturing methods were tested [403]. A method in which a complexed gelled water fracture was applied was the most successful when compared with a foam technique and with older and simpler techniques. The study covers some 56 wells where such techniques were applied. 

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