Multifractured horizontal wells suffer from high hydrocarbon decline and water cuts after initial flowback. This behavior is in part because of near- and far-field-fracture conductivity damage. Refracturing operations (acid or proppant) can mitigate these problems, yielding a good cleanout performance and stable oil-recovery trends. The complete paper details a successful pilot to improve long-term well performance using acid stimulation aided by a pioneering tailored metal oxide (TMO) nanoparticle-based fluids in the Wolfcamp A formation.
TMO Nanofluid
The reason for replacing normal surfactants with the TMO nanofluid was its ability to create bonds between the fracture phase and rock matrix, overcome the problems normal surfactants demonstrate, and provide long-term production maintenance.
