公开(公告)号：US09068962B2

公开(公告)日：2015-06-30

申请号：US14348611

申请日：2013-03-01

Applicant: Schlumberger Technology Corporation

Inventor： Marc Schneider ,  Abdel M. Kharrat ,  Farshid Mostowfi ,  Vincent Sieben

IPC: G01N33/28 ,  G01N31/16 ,  G01N21/83 ,  G01N21/25

CPC classification number: G01N33/28 ,  B01F5/0647 ,  B01F13/0059 ,  B01L3/502753 ,  B01L2300/0681 ,  B01L2300/0816 ,  B01L2300/0883 ,  B01L2300/0887 ,  B01L2400/0487 ,  G01N21/25 ,  G01N21/83 ,  G01N31/16 ,  G01N33/2823

Abstract: A method for determining an asphaltene yield curve and an asphaltene flocculation point includes obtaining a crude oil sample and measuring an optical spectrum of the crude oil sample. A titrant is then mixed with the crude oil sample at different concentrations. At each concentration, precipitated asphaltenes are filtered from the mixture and the optical spectrum of the filtrate is measured. The optical spectrum of the filtrate is then subtracted from the optical spectrum of the crude oil sample. A fractional asphaltene precipitation is determined for each concentration of titrant. A flocculation point is determined corresponding to an inflection point in the fractional asphaltene precipitation for each concentration of titrant.

Abstract translation: 确定沥青质产率曲线和沥青质絮凝点的方法包括获得原油样品并测量原油样品的光谱。 然后将滴定剂与不同浓度的原油样品混合。 在每个浓度下，从混合物中过滤沉淀的沥青质，并测量滤液的光谱。 然后从原油样品的光谱中减去滤液的光谱。 确定每种滴定剂浓度的分数沥青质沉淀。 根据滴定剂浓度的分数沥青质沉淀中的拐点确定絮凝点。

公开(公告)号：US20180059088A1

公开(公告)日：2018-03-01

申请号：US15254925

申请日：2016-09-01

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Ronald E.G. van Hal ,  Vincent Sieben ,  Cedric Floquet ,  Victoria Lee

IPC: G01N33/28 ,  G01N15/06

CPC classification number: G01N33/2858 ,  G01N1/00 ,  G01N15/06 ,  G01N21/00 ,  G01N21/554 ,  G01N21/77 ,  G01N21/85 ,  G01N2015/0675 ,  G01N2015/0693

Abstract: A method and system for detecting mercury in a hydrocarbon-containing fluid stores a sample of the hydrocarbon-containing fluid in a first reservoir. A liquid phase reagent solution is stored in a second reservoir. The liquid phase reagent solution includes nanoparticles with an affinity to mercury, wherein the nanoparticles are suspended as a colloid in the liquid phase reagent solution. The sample of the hydrocarbon-containing fluid is delivered from the first reservoir into a first port of a fluidic device while the liquid phase reagent solution is delivered from the second reservoir into a second port of the fluidic device such that the fluidic device produces slug flow. The slug flow is subject to optical analysis that determines concentration of mercury in the sample of the hydrocarbon-containing fluid.

公开(公告)号：US20140375991A1

公开(公告)日：2014-12-25

申请号：US14348611

申请日：2013-03-01

Applicant: Schlumberger Technology Corporation

Inventor： Marc Schneider ,  Abdel M. Kharrat ,  Farshid Mostowfi ,  Vincent Sieben

IPC: G01N33/28 ,  G01N31/16 ,  G01N21/25

CPC classification number: G01N33/28 ,  B01F5/0647 ,  B01F13/0059 ,  B01L3/502753 ,  B01L2300/0681 ,  B01L2300/0816 ,  B01L2300/0883 ,  B01L2300/0887 ,  B01L2400/0487 ,  G01N21/25 ,  G01N21/83 ,  G01N31/16 ,  G01N33/2823

Abstract: A method for determining an asphaltene yield curve and an asphaltene flocculation point includes obtaining a crude oil sample and measuring an optical spectrum of the crude oil sample. A titrant is then mixed with the crude oil sample at different concentrations. At each concentration, precipitated asphaltenes are filtered from the mixture and the optical spectrum of the filtrate is measured. The optical spectrum of the filtrate is then subtracted from the optical spectrum of the crude oil sample. A fractional asphaltene precipitation is determined for each concentration of titrant. A flocculation point is determined corresponding to an inflection point in the fractional asphaltene precipitation for each concentration of titrant.

Abstract translation: 确定沥青质产率曲线和沥青质絮凝点的方法包括获得原油样品并测量原油样品的光谱。 然后将滴定剂与不同浓度的原油样品混合。 在每个浓度下，从混合物中过滤沉淀的沥青质，并测量滤液的光谱。 然后从原油样品的光谱中减去滤液的光谱。 确定每种滴定剂浓度的分数沥青质沉淀。 根据滴定剂浓度的分数沥青质沉淀中的拐点确定絮凝点。

公开(公告)号：US10677775B2

公开(公告)日：2020-06-09

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 ,  G01N15/06 ,  G01N21/31 ,  B01L3/00 ,  G01N11/08

Abstract: A method of characterizing an oil sample includes: 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 and measuring and analyzing pressure difference across the filter over time to detect the presence of fines in the oil. The method further includes: 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 and 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.

公开(公告)号：US10359412B2

公开(公告)日：2019-07-23

申请号：US15254925

申请日：2016-09-01

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Ronald E. G. van Hal ,  Vincent Sieben ,  Cedric Floquet ,  Victoria Lee

IPC: G01N15/06 ,  G01N33/28

Abstract: A method and system for detecting mercury in a hydrocarbon-containing fluid stores a sample of the hydrocarbon-containing fluid in a first reservoir. A liquid phase reagent solution is stored in a second reservoir. The liquid phase reagent solution includes nanoparticles with an affinity to mercury, wherein the nanoparticles are suspended as a colloid in the liquid phase reagent solution. The sample of the hydrocarbon-containing fluid is delivered from the first reservoir into a first port of a fluidic device while the liquid phase reagent solution is delivered from the second reservoir into a second port of the fluidic device such that the fluidic device produces slug flow. The slug flow is subject to optical analysis that determines concentration of mercury in the sample of the hydrocarbon-containing fluid.

公开(公告)号：US09689858B2

公开(公告)日：2017-06-27

申请号：US14919504

申请日：2015-10-21

Applicant: Schlumberger Technology Corporation

Inventor： John Ratulowski ,  Shahnawaz Molla ,  Vincent Sieben ,  Farshid Mostowfi ,  Shawn Taylor ,  Christopher Harrison ,  Shunsuke Fukagawa ,  Elizabeth Smythe ,  Matthew Sullivan ,  John Meier

IPC: G01N33/28 ,  G01V8/02

CPC classification number: G01N33/2823 ,  E21B49/003 ,  E21B49/10 ,  G01N21/31 ,  G01N21/85 ,  G01N33/2835

Abstract: A method for determining an asphaltene onset condition of a crude oil is provided. The method includes receiving a crude oil within a downhole tool inside a well and taking a first measurement of an optical property of the received crude oil. The method also includes lowering the pressure or temperature of the crude oil after taking the first measurement of the optical property to cause aggregation of asphaltenes in the crude oil, and then separating aggregated asphaltenes from the crude oil. Further, the method includes taking a second measurement of the optical property of the crude oil within the downhole tool after separating aggregated asphaltenes from the crude oil and determining an asphaltene onset condition of the crude oil through comparison of the first and second measurements of the optical property. Additional methods, systems, and devices are also disclosed.

公开(公告)号：US20170115266A1

公开(公告)日：2017-04-27

申请号：US14919504

申请日：2015-10-21

Applicant: Schlumberger Technology Corporation

Inventor： John Ratulowski ,  Shahnawaz Molla ,  Vincent Sieben ,  Farshid Mostowfi ,  Shawn Taylor ,  Christopher Harrison ,  Shunsuke Fukagawa ,  Elizabeth Smythe ,  Matthew Sullivan ,  John Meier

IPC: G01N33/28 ,  G01V8/02

CPC classification number: G01N33/2823 ,  E21B49/003 ,  E21B49/10 ,  G01N21/31 ,  G01N21/85 ,  G01N33/2835

Abstract: A method for determining an asphaltene onset condition of a crude oil is provided. The method includes receiving a crude oil within a downhole tool inside a well and taking a first measurement of an optical property of the received crude oil. The method also includes lowering the pressure or temperature of the crude oil after taking the first measurement of the optical property to cause aggregation of asphaltenes in the crude oil, and then separating aggregated asphaltenes from the crude oil. Further, the method includes taking a second measurement of the optical property of the crude oil within the downhole tool after separating aggregated asphaltenes from the crude oil and determining an asphaltene onset condition of the crude oil through comparison of the first and second measurements of the optical property. Additional methods, systems, and devices are also disclosed.