Invention Grant
- Patent Title: Treating fluid comprising hydrocarbons, water, and polymer
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Application No.: US16660497Application Date: 2019-10-22
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Publication No.: US11242739B2Publication Date: 2022-02-08
- Inventor: Sumitra Subrahmanyan , Gayani W. Pinnawala , Sophany Thach , Gregory A. Winslow , Dennis Arun Alexis , Harold Charles Linnemeyer , Timothy Peter Theriot , Les Leszek Jackowski , Francesca Cibotti
- Applicant: Chevron U.S.A. Inc.
- Applicant Address: US CA San Ramon
- Assignee: Chevron U.S.A. Inc.
- Current Assignee: Chevron U.S.A. Inc.
- Current Assignee Address: US CA San Ramon
- Agency: Meunier Carlin & Curman LLC
- Main IPC: E21B43/38
- IPC: E21B43/38 ; C09K8/588

Abstract:
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.
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