US 11,852,648 B2
Crude oil demulsifier characterization
Nagoorpitchai S. Meeranpillai, Al-Khobar (SA); Ali Almuhaimeed, Al-Qatif (SA); and Osama Alzahrani, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Feb. 24, 2022, as Appl. No. 17/679,582.
Prior Publication US 2023/0266218 A1, Aug. 24, 2023
Int. Cl. G01N 9/00 (2006.01); G01N 33/28 (2006.01); G01N 1/38 (2006.01); G01N 13/02 (2006.01)
CPC G01N 9/00 (2013.01) [G01N 13/02 (2013.01); G01N 33/2823 (2013.01); G01N 1/38 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
placing a sample comprising crude oil and a demulsifier in a sample housing;
submerging a cylindrical sensor in the sample within the sample housing, wherein an external surface of the cylindrical sensor comprises a fluoropolymer;
measuring, by a computer communicatively coupled to the cylindrical sensor, a plurality of densities of the sample for a corresponding plurality of time points over a specified testing time duration;
recording, by the computer, the plurality of densities and the corresponding plurality of time points; and
determining an emulsion breaking efficiency of the demulsifier based on the recorded plurality of densities and corresponding plurality of time points.