Invention Grant
- Patent Title: Polymer flooding processes for viscous oil recovery in carbonate reservoirs
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Application No.: US16579085Application Date: 2019-09-23
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Publication No.: US10961831B2Publication Date: 2021-03-30
- Inventor: Subhash Chandrabose Ayirala , Abdulkareem M. Al-Sofi , Ali Abdallah Al-Yousef , Jinxun Wang
- Applicant: Saudi Arabian Oil Company
- Applicant Address: SA Dhahran
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA Dhahran
- Agency: Bracewell LLP
- Agent Constance R. Rhebergen
- Main IPC: E21B43/20
- IPC: E21B43/20 ; C09K8/588 ; C09K8/594 ; E21B4/16 ; E21B43/16
Abstract:
A composition for use in a polymer flooding operation in a viscous oil containing carbonate reservoir formation with in situ rock is provided. The composition includes a polymer, the polymer operable to increase the viscosity of the composition; and a tuned water, the tuned water operable to alter a wettability of the in situ rock, wherein the tuned water has a total dissolved solids of between 5,000 ppm by weight and 7,000 ppm by weight, wherein the total dissolved solids comprises one or more salts; wherein the composition has a viscosity between 4 cP and 100 cP.
Public/Granted literature
- US20200018142A1 POLYMER FLOODING PROCESSES FOR VISCOUS OIL RECOVERY IN CARBONATE RESERVOIRS Public/Granted day:2020-01-16
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