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.

公开(公告)号：US11028690B2

公开(公告)日：2021-06-08

申请号：US16029683

申请日：2018-07-09

Applicant: Schlumberger Technology Corporation

Inventor： Farshid Mostowfi ,  Ronald E. G. van Hal ,  Shahnawaz Hossain Molla ,  Jane T. Lam ,  Amy Du ,  Neil William Bostrom ,  Michael Mallari Toribio

IPC: E21B49/08 ,  B01L3/00 ,  B01F13/00

Abstract: A technique facilitates detection and analysis of constituents, e.g. chemicals, which may be found in formation fluids and/or other types of fluids. The technique comprises intermittently introducing a first fluid and a second fluid into a channel in a manner which forms slugs of the first fluid separated by the second fluid. The intermittent fluids are flowed through the channel to create a mixing action which mixes the fluid in the slugs. The mixing increases the exchange, e.g. transfer, of the chemical constituent between the second fluid and the first fluid. The exchange aids in sensing an amount of the chemical or chemicals for analysis. In many applications, the intermittent introduction, mixing, and measuring can be performed in a subterranean environment.

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

IPC: B01L3/00 ,  C09K8/536 ,  C09K8/92 ,  C02F5/08 ,  B01L7/00 ,  G01N33/28

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.

公开(公告)号：US20180003619A1

公开(公告)日：2018-01-04

申请号：US15638443

申请日：2017-06-30

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Vincent Joseph Sieben ,  Kenneth John Chau ,  Shahnawaz Hossain Molla ,  Farshid Mostowfi ,  Elizabeth Jennings Smythe Jennings Smythe

IPC: G01N21/27 ,  G01N21/05 ,  G01N33/28 ,  G01N21/25

CPC classification number: G01N21/27 ,  G01N21/05 ,  G01N21/553 ,  G01N33/2835 ,  G01N2021/258

Abstract: An optical sensor includes a flow cell permitting flow of a hydrocarbon-based analyte therethrough. A metallic film is disposed adjacent or within the flow cell. At least one optical element directs polychromatic light for supply to an interface of the metallic film under conditions of surface plasmon resonance (SPR) and directs polychromatic light reflected at the interface of the metallic film (which is sensitive to SPR at such interface and thus provides an SPR sensing region within the flow cell) for output to at least one spectrometer that measures spectral data of such polychromatic light. A computer processing system is configured to process the measured spectral data over time as the hydrocarbon-based analyte flows through the flow cell to determine SPR peak wavelength over time and to process the SPR peak wavelength over time to determine at least one property related to phase transition of the analyte.

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

IPC: E21B47/06 ,  G01N33/28

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。

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：US12234724B2

公开(公告)日：2025-02-25

申请号：US17010368

申请日：2020-09-02

Applicant: Schlumberger Technology Corporation

Inventor： Shahnawaz Hossain Molla ,  Maneesh Pisharat ,  Yujian Wu ,  Farshid Mostowfi ,  Oscar Eduardo Torres Jaimes

IPC: E21B49/08 ,  E21B21/06 ,  E21B49/00 ,  G01N33/28

Abstract: Methods (and related apparatus) include obtaining data regarding a measured property. The measured property includes an amount of each of predetermined hydrocarbons in a gas sample extracted from drilling fluid exiting a wellbore having a hydrocarbon resource. An unknown characteristic of an investigated fluid property of the hydrocarbon resource is predicted utilizing the obtained input data and one or more predetermined models each built via statistical classification and regression analysis of a preexisting database containing records. Each record includes known characteristics of fluid properties of a different one of known reservoir fluids. The fluid properties include the investigated fluid property and the measured property. The investigated fluid property includes a fluid type of the hydrocarbon resource, an amount of at least one additional hydrocarbon, gas-oil ratio, or stock tank oil density.

公开(公告)号：US20220364465A1

公开(公告)日：2022-11-17

申请号：US17755093

申请日：2020-10-22

Applicant: Schlumberger Technology Corporation

Inventor： Shahnawaz Hossain Molla ,  Farshid Mostowfi

IPC: E21B49/08 ,  G06N3/08 ,  G06N3/04

Abstract: Methods and apparatus provide for determining a reservoir fluid phase envelope from downhole fluid analysis data using machine learning techniques.

公开(公告)号：US20200290040A1

公开(公告)日：2020-09-17

申请号：US16651181

申请日：2018-09-21

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Shahnawaz Hossain Molla ,  John Ratulowski ,  Farshid Mostowfi ,  Jinglin Gao

IPC: B01L3/00 ,  G01N21/85 ,  B01F13/00 ,  B01F5/06 ,  B01F3/04 ,  B01F15/00

Abstract: A microfluidic apparatus includes a substrate defining a microchannel having inlet and an outlet defining a length of the microchannel. The microchannel has a main channel extending from the inlet to the outlet, and a plurality of side cavities extending from the main channel. The cavities are in fluid communication with the main channel. A method includes introducing a sample into the microchannel through the inlet to fill the entire microchannel, and then introducing a solvent into the microchannel through the inlet at a controlled flow rate and inlet pressure. A developed solvent front then moves along the main channel from the inlet to the outlet while displacing the sample in the main channel. Images of the microchannel are acquired as the front moves, and a miscibility condition is determined based on the images.

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

IPC: B01L3/00 ,  C09K8/92 ,  C09K8/536 ,  C02F5/08 ,  B01L7/00

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.