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    Measurement of metal or alloy coating
    2.
    发明授权
    Measurement of metal or alloy coating 有权

    公开(公告)号：US12092594B2

    公开(公告)日：2024-09-17

    申请号：US17756917

    申请日：2020-11-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Jill F. Geddes ,  Trevor Lloyd Hughes ,  Evgeny Borisovich Barmatov

    IPC: G01N23/223 ,  G01B15/02

    CPC classification number: G01N23/223 ,  G01B15/02 ,  G01N2223/076 ,  G01N2223/507 ,  G01N2223/61 ,  G01N2223/633

    Abstract: A method for measuring average thickness of a metal or alloy coating on a metal or alloy substrate using an X-ray fluorescence (XRF) spectrometer is used when the coating has an uneven surface at different distances from a measurement window of the XRF spectrometer. The method includes measuring elemental composition of the coating or substrate using the XRF spectrometer and obtaining the average thickness of the coating using a calibration relationship between coating thickness and elemental composition of the coating or substrate. The metal or alloy coating may be a metal or alloy coating of a plurality of outer armor wires wrapped around a cable. The method may be used to analyze coating thickness changes over time or along the length of the cable, or to analyze a corrosive environment in order to choose optimal material for a metal or alloy coating.

    EMULSIFIER FOR SYNTHETIC-BASED MUD, PROCESS FOR PREPARATION, AND DRILLING METHOD
    3.
    发明公开
    EMULSIFIER FOR SYNTHETIC-BASED MUD, PROCESS FOR PREPARATION, AND DRILLING METHOD 审中-公开

    公开(公告)号：US20230374365A1

    公开(公告)日：2023-11-23

    申请号：US18028283

    申请日：2021-01-29

    Applicant: Schlumberger Technology Corporation

    Inventor： Dimitri M. Khramov ,  Evgeny Borisovich Barmatov

    IPC: C09K8/36

    CPC classification number: C09K8/36

    Abstract: Improved emulsifier for synthetic-based mud, process for preparation, and drilling method. The emulsifier has the formula (II) wherein each R1 is a C4 to C30 alkyl; R2, R3, R5, and R6 are each independently selected from H, C1 to C4 alkyl, C1 to C4 alkoxyalkyl, and C1 to C4 hydroxyalkyl; n and m are independently integers from 1 to 10; and y is an integer from 1 to 5. It is prepared by reacting a polyalkyleneamine with a monocarboxylic acid to form a first reaction product, reacting the first reaction product with a dicarboxylic acid to form a second reaction product, and heat treating the second reaction product to form an isomer. The drilling fluid contains the emulsifier, an oleaginous phase, and a non-oleaginous phase, and during use is circulated in a wellbore.

    Characterization of fluids with drag reducing additives in a couette device
    4.
    发明授权
    Characterization of fluids with drag reducing additives in a couette device 有权

    公开(公告)号：US10860753B2

    公开(公告)日：2020-12-08

    申请号：US15035072

    申请日：2013-11-07

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Evgeny Borisovich Barmatov ,  Dmitry Eskin

    IPC: G06F17/50 ,  G01N11/04 ,  G01F1/28 ,  G06F17/11 ,  G01N11/00 ,  G06F30/20 ,  G06F113/14

    Abstract: A method is provided for characterizing fluid flow in a pipe where the fluid includes a drag reducing polymer of a particular type and particular concentration. A computational model is configured to model flow of a fluid in a pipe. The computational model utilizes an empirical parameter for a drag reducing polymer of the particular type and the particular concentration. The computational model can be used to derive information that characterizes the flow of the fluid in the pipe. The empirical parameter for the particular type and the particular concentration of the drag reducing polymer can be identified by solving another computational model that is configured to model turbulent Couette flow in a Couette device for a fluid that includes a drag reducing polymer of the particular type and the particular concentration. The empirical data needed for identification of the empirical parameter are obtained from Couette device experiments.

    Amide emulsifier for high-temperature oil-based drilling fluid
    6.
    发明授权
    Amide emulsifier for high-temperature oil-based drilling fluid 有权

    公开(公告)号：US11814570B2

    公开(公告)日：2023-11-14

    申请号：US17820684

    申请日：2022-08-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Evgeny Borisovich Barmatov ,  Dimitri M. Khramov

    IPC: C09K8/36 ,  C07D207/12 ,  C07D307/22

    CPC classification number: C09K8/36 ,  C07D207/12 ,  C07D307/22

    Abstract: Drilling fluid compositions include an emulsifier having a generic structure A, structure B, or a combination thereof. Structure A includes an amide (e.g., amic acid group) and structure B includes a cyclic imide. The emulsifier of the emulsifier system is formed by reacting a fatty oil amine (e.g., oleyl amine), with a cyclic anhydride (e.g., succinic anhydride) in the absence of diluent or in a diluent that does not react with the starting materials. The reaction takes place via application of a stepwise increase in temperature. An emulsifier based on structure A is formed when the reaction temperature is maintained at 50 to 100° C. for 1 to 3 hours. A further increase in reaction temperature (e.g., up to 200° C.) can include water elimination which results predominately in the formation of a molecule represented by structure B.

    Corrosion inhibition
    7.
    发明授权
    Corrosion inhibition 有权

    公开(公告)号：US10794527B2

    公开(公告)日：2020-10-06

    申请号：US15507791

    申请日：2015-08-26

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Evgeny Borisovich Barmatov ,  Trevor Lloyd Hughes

    IPC: C09K8/54 ,  F16L58/10 ,  C23F11/04 ,  E21B41/02 ,  C23F11/173 ,  E21B43/25 ,  F16L101/16

    Abstract: A method of inhibiting corrosion of metal which will be in contact with aqueous, and possibly acidic, solution comprises contacting the metal with a corrosion inhibiting composition containing more than 30% by weight of one or more organic corrosion inhibiting constituents which are water-insoluble hydrophobic material, and a corrosion inhibitor which contains one or more polymerisable groups containing double or triple bonded carbon, before contacting the metal with the aqueous solution. The method may be used to protect coiled tubing used for matrix acidizing of an oil well by propelling a slug of the corrosion inhibiting composition along the coiled tubing before pumping acid through the tubing.

    CHARACTERIZATION OF FLUIDS WITH DRAG REDUCING ADDITIVES IN A COUETTE DEVICE
    9.
    发明申请
    CHARACTERIZATION OF FLUIDS WITH DRAG REDUCING ADDITIVES IN A COUETTE DEVICE 审中-公开
    在一个辅助装置中减少添加剂的流体的流体特性

    公开(公告)号：US20160275221A1

    公开(公告)日：2016-09-22

    申请号：US15035072

    申请日：2013-11-07

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Evgeny Borisovich Barmatov ,  Dmitry Eskin

    IPC: G06F17/50 ,  G06F17/11 ,  G01F1/28

    CPC classification number: G06F17/5009 ,  G01F1/28 ,  G01N11/04 ,  G01N2011/006 ,  G06F17/11 ,  G06F2217/34

    Abstract: A method is provided for characterizing fluid flow in a pipe where the fluid includes a drag reducing polymer of a particular type and particular concentration. A computational model is configured to model flow of a fluid in a pipe. The computational model utilizes an empirical parameter for a drag reducing polymer of the particular type and the particular concentration. The computational model can be used to derive information that characterizes the flow of the fluid in the pipe. The empirical parameter for the particular type and the particular concentration of the drag reducing polymer can be identified by solving another computational model that is configured to model turbulent Couette flow in a Couette device for a fluid that includes a drag reducing polymer of the particular type and the particular concentration. The empirical data needed for identification of the empirical parameter are obtained from Couette device experiments.

    Abstract translation: 提供了一种用于表征管道中的流体流动的方法，其中流体包括特定类型和特定浓度的减阻聚合物。 一个计算模型被配置成模拟管道中流体的流动。 计算模型利用特定类型的减阻聚合物和特定浓度的经验参数。 计算模型可用于导出表征管道中流体流动的信息。 减阻聚合物的具体类型和特定浓度的经验参数可以通过解决另一种计算模型来识别，该计算模型被配置为在包括特定类型的减阻聚合物的流体的Couette装置中建模湍流Couette流，以及 特定浓度。 经验参数所需的经验数据是从Couette装置实验得到的。

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