Chevron U.s.a. Inc.

Les Leszek Jackowski

Gregory Arthur Winslow

Dennis Arun Alexis

Sophany Thach

Gayani W Pinnawala

Sumitra Subrahmanyan

Harold Charles Linnemeyer

Timothy P Theriot

Francesca Cibotti

Kerry Kennedy Spilker

Sujeewa S Palayangoda

Alphonzo George Nelson

Embodiments of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. One embodiment comprises adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.

Treating fluid comprising hydrocarbons, water, and polymer

Described herein are methods of treating fluid including hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation. The methods include adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The viscosity reducer is buffered at a pH of 7 or less. The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid.

Ph control in fluid treatment

Described herein are methods of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. The method can include adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The viscosity reducer is buffered at a pH of 7 or less (e.g., at a pH of from 2 to 7, such as at a pH of from 3.5 to 7, or at a pH of from 5 to 7). The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.

PH control in fluid treatment

A fluid delivery apparatus is provided for supplying a fluid mixture to a distillation column or reactor. The apparatus can be used to enhance the heat duty, the flow and/or the flow stability of an existing thermosiphon reboiler which supplies a heated fluid to the column or reactor. The apparatus includes an integrated eductor which receives and increases the fluid velocity of a supplemental fluid into which the heated fluid is aspirated to form a fluid mixture then delivered to the column or reactor. A process and a system utilizing the apparatus are also disclosed, as well as a method of retrofitting an existing system with the apparatus.

Apparatus, process and system for delivering fluid to a distillation column or reactor

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San Ramon, CA, United States of America

Les Leszek Jackowski