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1.发明申请公开(公告)号：US20200179922A1
公开(公告)日：2020-06-11
申请号：US16792772
申请日：2020-02-17
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Shahnawaz Molla , Farshid Mostowfi , Cedric Floquet
Abstract: A test method and apparatus employs a microfluidic device to characterize properties of a fluid. The microfluidic device has an inlet port, an outlet port, and a microchannel as part of a fluid path between the inlet port and the outlet port. While a fluid is introduced into the microchannel, the fluid temperature is maintained while the fluid pressure in the microchannel is varied to characterize the properties of the fluid in the microchannel. The properties of the fluid can relate to a scale onset condition of the fluid at the pressure of the flow through the microchannel. In one aspect, fluid pressure in the microchannel is maintained while the fluid temperature is varied to characterize the properties of the fluid. In another aspect, flow rate of the fluid through the microchannel is varied while the fluid temperature is maintained to characterize the properties of the fluid in the microchannel.
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公开(公告)号：US11015434B2
公开(公告)日：2021-05-25
申请号：US15022871
申请日：2013-09-20
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Shahnawaz Molla , Abdel Kharrat , Farshid Mostowfi
Abstract: A method and system are provided for detecting the wax appearance temperature (WAT) of a hydrocarbon fluid sample. The hydrocarbon fluid sample is run through a microfluidic channel at controlled temperatures while sensing the pressure drop across the channel. The WAT is determined by finding a temperature at which the pressure (drop) across the microfluidic channel caused by a temperature reduction of the hydrocarbon fluid sample does not stabilize over a given time interval, thereby establishing the WAT as being at that temperature or between that temperature and a previous higher temperature where the pressure (drop) stabilized over time.
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3.发明申请公开(公告)号：US20180221867A1
公开(公告)日：2018-08-09
申请号：US15503305
申请日：2014-08-11
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Shahnawaz Molla , Farshid Mostowfi , Cedric Floquet
Abstract: A test method and apparatus employs a microfluidic device to characterize properties of a fluid. The microfluidic device has an inlet port, an outlet port, and a microchannel as part of a fluid path between the inlet port and the outlet port. While a fluid is introduced into the microchannel, the fluid temperature is maintained while the fluid pressure in the microchannel is varied to characterize the properties of the fluid in the microchannel. The properties of the fluid can relate to a scale onset condition of the fluid at the pressure of the flow through the microchannel. In one aspect, fluid pressure in the microchannel is maintained while the fluid temperature is varied to characterize the properties of the fluid. In another aspect, flow rate of the fluid through the microchannel is varied while the fluid temperature is maintained to characterize the properties of the fluid in the microchannel.
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Patent Agency Ranking
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
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.
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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
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.
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6.发明申请公开(公告)号：US20220074303A1
公开(公告)日：2022-03-10
申请号：US17416773
申请日：2019-12-18
Applicant: Schlumberger Technology Corporation
Inventor： Shahnawaz Molla , Farshid Mostowfi
Abstract: Methods for determining in situ the value of a formation fluid parameter using a downhole fluid analysis (DFA) tool. The methods utilize advanced statistical learning tools to build a predictive model to estimate a fluid property given a set of input parameters. In one embodiment the fluid saturation pressure parameter is determined by using the DFA tool to obtain the fluid and to obtain weight fractions of at least C1, C6+, and CO2 of the fluid. The weight fractions and a reservoir temperature are input into a trained statistical learning machine to obtain a determination of the saturation pressure of the fluid.
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公开(公告)号：US10569267B2
公开(公告)日：2020-02-25
申请号：US15503305
申请日：2014-08-11
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Shahnawaz Molla , Farshid Mostowfi , Cedric Floquet
Abstract: A test method and apparatus employs a microfluidic device to characterize properties of a fluid. The microfluidic device has an inlet port, an outlet port, and a microchannel as part of a fluid path between the inlet port and the outlet port. While a fluid is introduced into the microchannel, the fluid temperature is maintained while the fluid pressure in the microchannel is varied to characterize the properties of the fluid in the microchannel. The properties of the fluid can relate to a scale onset condition of the fluid at the pressure of the flow through the microchannel. In one aspect, fluid pressure in the microchannel is maintained while the fluid temperature is varied to characterize the properties of the fluid. In another aspect, flow rate of the fluid through the microchannel is varied while the fluid temperature is maintained to characterize the properties of the fluid in the microchannel.
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公开(公告)号：US20160208601A1
公开(公告)日：2016-07-21
申请号：US15022871
申请日：2013-09-20
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Shahnawaz Molla , Abdel Kharrat , Farshid Mostowfi
CPC classification number: E21B47/065 , B01L3/5027 , E21B37/00 , E21B2049/085 , G01N33/28 , G01N33/2811
Abstract: A method and system are provided for detecting the wax appearance temperature (WAT) of a hydrocarbon fluid sample. The hydrocarbon fluid sample is run through a microfluidic channel at controlled temperatures while sensing the pressure drop across the channel. The WAT is determined by finding a temperature at which the pressure (drop) across the microfluidic channel caused by a temperature reduction of the hydrocarbon fluid sample does not stabilize over a given time interval, thereby establishing the WAT as being at that temperature or between that temperature and a previous higher temperature where the pressure (drop) stabilized over time.
Abstract translation: 提供了一种用于检测烃流体样品的蜡外观温度（WAT）的方法和系统。 烃流体样品在受控的温度下通过微流体通道，同时感测通道上的压降。 WAT是通过找到由于烃流体样品的温度降低引起的微流体通道上的压力（下降）在给定时间间隔内不稳定的温度来确定的，从而将WAT设定为处于该温度或在该温度下 温度和先前较高的温度，其中压力（液滴）随时间稳定。
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