Methods and compositions for introducing conductive channels...

Details Methods and compositions for introducing conductive channels... Methods and compositions for introducing conductive channels...

E - Fixed Constructions

21

B

E21B 43/267 (2006.01) C09K 8/62 (2006.01) C09K 8/80 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2509130

Methods for the treatment of subterranean wells involving injecting a first fracturing fluid into a formation, and then injecting at least a second fracturing fluid into the formation in order to create extended conductive channels through a formation are described. The fracturing fluids can be similar in density, viscosity, pH and the other related characteristics. Alternatively, the fracturing fluids can differ in their densities, viscosities, and pH, allowing for variations in the conductive channels formed. Propping agents can also be included in one or both of the injected fluids, further enhancing the conductive channels formed. The described methods aid in minimizing proppant flowback problems typically associated with hydraulic fracturing techniques.

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