公开(公告)号：US11906501B2

公开(公告)日：2024-02-20

申请号：US17346560

申请日：2021-06-14

Applicant: Schlumberger Technology Corporation

Inventor： Vincent Joseph Sieben ,  Farshid Mostowfi ,  Nejib Hamed ,  Alexander Stickel ,  Collins Obiosa-Maife

IPC: G01N33/28 ,  G01N1/38 ,  G01N21/31 ,  G01N21/05 ,  E21B49/08 ,  G01N1/40 ,  G01N30/02

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：US20210302404A1

公开(公告)日：2021-09-30

申请号：US17346560

申请日：2021-06-14

Applicant: Schlumberger Technology Corporation

Inventor： Vincent Joseph Sieben ,  Farshid Mostowfi ,  Nejib Hamed ,  Alexander Stickel ,  Collins Obiosa-Maife

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

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：US11035839B2

公开(公告)日：2021-06-15

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 ,  G01N1/38 ,  G01N21/31 ,  G01N21/05 ,  E21B49/08 ,  G01N1/40 ,  G01N30/02

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.