Abstract: Disclosed herein are compositions, processes, and systems for deploying and creating a temporary fluid barrier at an interface between a high fluid conductivity zone and a lower fluid conductivity zone. The disclosed compositions include mixtures of solvents and biodegradable non-spherical particles, wherein the particles include a coating that may slow or inhibit degradation, for example by hydrolysis, of the particle. The disclosed particles are designed to possess sufficient flexibility to traverse the high conductivity zone.

Abstract: Disclosed herein are compositions, processes, and systems for deploying and creating a temporary fluid barrier at an interface between a high fluid conductivity zone and a lower fluid conductivity zone. The disclosed compositions include mixtures of solvents and biodegradable non-spherical particles, wherein the particles include a coating that may slow or inhibit degradation, for example by hydrolysis, of the particle. The disclosed particles are designed to possess sufficient flexibility to traverse the high conductivity zone.

Abstract: Described herein are environmentally acceptable fluid compositions, and methods and systems of using the fluids for restoring or enhancing hydrocarbon flow from a well bore. In some embodiments the fluids can be used to decrease the viscosity of a high viscosity hydrocarbon such as heavy crude oil. In other embodiments, the fluids may be used to aid in releasing a hydrocarbon from a geologic formation. In other embodiments, the fluids may be used to restore flow from a wellbore located at or near a geologic formation with a significant concentration of clay. In some embodiments, the disclosed fluids may be used with one or more viscosity-modifying compounds. The disclosed compositions may help decrease the concentration of water within the formation while increasing the concentration of methanol within the formation, which may aid in restoring cracks and fissures in the formation, increasing the size of the cracks and fissures, or increasing the number of cracks and fissures within the formation.