Well treatment methods and systems

摘要

A well treatment method includes drawing a solvent to a first pump, drawing a wetting liquid to a second pump, pumping the wetting liquid through a polymer mixer using the second pump, combining polymer with the wetting liquid to produce a slurry containing undissolved polymer, and combining the slurry with the solvent upstream from the first pump. Another well treatment method includes increasing dissolution time of the polymer by providing a buffering agent in the wetting liquid before combining the wetting liquid and the polymer. A well treatment system includes a polymer mixing subsystem with a mix loop having a mix loop inlet line from a first pump feed line and a mix loop outlet line back to the first pump feed line, the mix loop outlet line containing a polymer mixer.

主权项

1. A well treatment method comprising:
drawing a solvent from a first source to a first pump using the first pump; drawing a wetting liquid from the first source or a different second source to a second pump separate from the first pump and pumping the wetting liquid through a polymer mixer using the second pump; supplying polymer from a polymer feeder to the polymer mixer and therein combining the wetting liquid and the polymer to produce a slurry containing undissolved polymer; combining the slurry with the solvent upstream from the first pump and, using the first pump, pumping the combined slurry and solvent to a gel reservoir; and dissolving the polymer to produce a gel and using the gel in a well treatment process.