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：US20170082551A1

公开(公告)日：2017-03-23

申请号：US15126225

申请日：2015-03-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Bruce Alexander MACKAY ,  Farshid MOSTOWFI ,  Vincent SIEBEN ,  Cedric FLOQUET

IPC: G01N21/78 ,  B01F13/00 ,  B01F3/12 ,  B01L3/00

CPC classification number: G01N21/78 ,  B01F3/1207 ,  B01F5/065 ,  B01F13/0059 ,  B01F2003/125 ,  B01F2215/0037 ,  B01F2215/0081 ,  B01L3/5027 ,  B01L2300/0867 ,  E21B43/26 ,  G01N2021/0346

Abstract: A method includes providing a water sample for analysis at a well site, or at a location proximate the well site, where the water sample is collected from at least one water source and the water sample comprises at least one analyte. The water sample and a reagent are introduced into a microfluidic mixing cell to produce a mixture of the reagent and water sample, and the mixture has a detectable characteristic indicative of concentration of the at least one analyate in the water sample. The detectable characteristic is measured by spectrophotometry to determine concentration of the at least one analyte. Then a subterranean formation treatment fluid is prepared using water from the at least one water source based on the concentration of the at least one analyte. The introducing into the microfluidic mixing cell and the measuring by spectrophotometry are conducted over an elapsed time period of about 5 minutes or less.

公开(公告)号：US20190011423A1

公开(公告)日：2019-01-10

申请号：US15739831

申请日：2015-06-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Shahnawaz H. MOLLA ,  Vincent SIEBEN ,  Farshid MOSTOWFI

IPC: G01N33/28 ,  B01L3/00

CPC classification number: G01N33/2823 ,  B01L3/502753 ,  B01L2300/0627 ,  B01L2300/0681 ,  B01L2300/18 ,  G01N11/08 ,  G01N15/0618 ,  G01N21/31 ,  G01N33/2835

Abstract: A method of characterizing an oil sample includes: i) flowing a first sample containing an oil through a microfluidic device that has a microfluidic filter while controlling the temperature of the first sample such that it is above wax appearance temperature for the oil; ii) in conjunction with i), using the microfluidic filter to perform filtering operations that selectively block fines contained in the oil from passing through the filter; iii) in conjunction with i) and ii), measuring and analyzing pressure difference across the filter over time to detect the presence of fines in the oil; iv) flowing a second sample containing the oil through the microfluidic device while controlling the temperature of the second sample such that the temperature of the second sample is lower than wax appearance temperature for the oil; v) in conjunction with iv), using the filter to perform microfluidic filtering operations that selectively block at least one of wax that crystallizes from the oil and fines contained in the oil from passing through the filter; and vi) in conjunction with iv) and v), measuring and analyzing pressure difference across the filter over time as the second sample is filtered to detect the presence of wax in the oil.