METHOD FOR REMOVING BITUMEN TO ENHANCE FORMATION PERMEABILITY

摘要

Treatment methods and treatment fluids for increasing permeability of organic shale formations are described herein. The treatment method includes treating an organic shale formation with a treatment fluid. The treatment fluid includes a solvent that dissolves bitumen in the shale formation. After treating the shale formation with the treatment fluid, oil is recovered from the shale formation. By removing bitumen from pores and pore throats within the formation, the solvent increases permeability of the formation and allows mobile oil to flow more easily through the formation.

主权项

1. A method for treating an organic shale formation to increase permeability, the method comprising:
using a wellbore that traverses the organic shale formation to treat at least a portion of the shale formation with a treatment fluid, wherein the treatment fluid comprises a solvent that dissolves bitumen in the shale formation and increases permeability of the shale formation.