公开(公告)号：US20180164273A1

公开(公告)日：2018-06-14

申请号：US15579271

申请日：2015-06-08

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Vincent Joseph SIEBEN ,  Farshid MOSTOWFI ,  Nejib HAMED ,  Alexander STICKEL ,  Collins OBIOSA-MAIFE

IPC: G01N33/28 ,  G01N21/05 ,  G01N21/31 ,  G01N1/38 ,  E21B49/08

CPC classification number: G01N33/2823 ,  E21B49/08 ,  G01N1/38 ,  G01N21/05 ,  G01N21/31 ,  G01N2001/4061 ,  G01N2030/027

Abstract: A method of determining saturate, aromatic, resin, and asphaltene (SARA) fractions of a hydrocarbon fluid sample, including: i) microfluidic mixing that forms a mixture including the hydrocarbon fluid sample and a solvent fluid that dissolves asphaltenes; ii) performing optical spectroscopy on the hydrocarbon fluid sample-solvent fluid mixture resulting from i); iii) microfluidic mixing that forms a mixture including the hydrocarbon fluid sample and a titrant fluid that precipitates asphaltenes; iv) microfluidically precipitating asphaltenes from the hydrocarbon fluid sample titrant fluid mixture resulting from iii); v) performing a microfluidic filtering operation that removes precipitated asphaltenes from the mixture resulting from iv) while outputting permeate; vi) performing optical spectroscopy on the permeate resulting from v); vii) determining an asphaltene fraction percentage of the hydrocarbon fluid sample based on the optical spectroscopy performed in ii) and vi); viii) sequentially separating saturate-, aromatic-, and resin-containing portions from the permeate from v); ix) for each separating of viii), measuring an optical property of the respective saturate-, aromatic-, and resin-containing portions over time; and x) determining fraction percentages of saturates, aromatics, and resins in the hydrocarbon fluid sample based on the measured optical properties of ix) and respective mass-to-optical correlation data.

公开(公告)号：US20170232435A1

公开(公告)日：2017-08-17

申请号：US15043082

申请日：2016-02-12

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Vincent Joseph SIEBEN ,  Cedric Floquet ,  Farshid Mostowfi

IPC: B01L3/00 ,  G01N33/22

CPC classification number: B01L3/50273 ,  B01F13/0059 ,  B01F15/0233 ,  B01L3/5027 ,  B01L2200/10 ,  B01L2300/0627 ,  B01L2300/0803 ,  B01L2300/0867 ,  B01L2300/087 ,  B01L2400/0409 ,  C09K8/524 ,  C09K2208/20 ,  C10G75/04 ,  G01N21/0332 ,  G01N21/07 ,  G01N21/253 ,  G01N21/645 ,  G01N21/65 ,  G01N21/82 ,  G01N33/22 ,  G01N33/2823 ,  G01N33/2835 ,  G01N35/00069 ,  G01N35/025 ,  G01N2021/0328 ,  G01N2021/0346 ,  G01N2021/7783 ,  G01N2021/7786 ,  G01N2035/0449

Abstract: A method of evaluating an asphaltene inhibitor includes providing a centrifugal microfluidic system including: a disc mounted to rotate about an axis; a microfluidic device mounted on the disc, the device having sample, solvent, inhibitor, and precipitant reservoirs and an analysis chamber in fluid communication with the sample, solvent, inhibitor, and precipitant reservoirs; and an optical detection system coupled to the analysis chamber and configured to measure the optical transmission of fluid in the analysis chamber. The method includes filling the sample, solvent, inhibitor, and precipitant reservoirs, respectively, with a sample, solvent, inhibitor, and precipitant; rotating the disc to generate centrifugal force to cause the sample, solvent, inhibitor, and precipitant to travel radially outward to the analysis chamber; and measuring the optical transmission of a mixture of the sample, solvent, inhibitor, and precipitant in the analysis chamber as a function of radial distance of the analysis chamber.