公开(公告)号：US09399911B2

公开(公告)日：2016-07-26

申请号：US14015930

申请日：2013-08-30

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Dmitry Mikhailov ,  Valery Vasilievich Shako ,  Evgeny Chuvilin ,  Tatiyana Buida

IPC: E21B49/02 ,  G01N33/28 ,  G01N15/08

CPC classification number: E21B49/02 ,  G01N15/082 ,  G01N33/2823 ,  G01N2015/0833

Abstract: For the purpose of determining a weight concentration of a clay material in a porous medium sample, a specific active surface area of the clay material and an initial specific active surface area of the porous sample are measured. A water solution of the clay material is pumped through the sample and a specific active surface area of the sample of the porous medium is measured after the pumping. Then, the weight concentration of the clay material is calculated.

Abstract translation: 为了确定多孔介质样品中粘土材料的重量浓度，测量粘土材料的比活性表面积和多孔样品的初始比活度表面积。 将粘土材料的水溶液泵送通过样品，并在泵送之后测量多孔介质样品的特定活性表面积。 然后，计算粘土材料的重量浓度。

公开(公告)号：US20150039275A1

公开(公告)日：2015-02-05

申请号：US14331227

申请日：2014-07-15

Applicant: Schlumberger Technology Corporation

Inventor： Dmitry Mikhailov ,  Valery Vasilievich Shako ,  Nikita Ilyich Ryzhikov ,  Alexander Nikolaevich Nadeev

IPC: G06F17/50

CPC classification number: G06F17/5009 ,  E21B37/00 ,  E21B43/00 ,  E21B49/005

Abstract: In order to predict properties of a formation in a near-wellbore area exposed to a drilling mud rheological properties of the drilling mud, of a filtrate of the drilling mud and of a reservoir fluid are determined. Properties of an external mudcake, porosity and permeability of the core sample are determined. A mathematical model of the external mudcake is created. The drilling mud is injected through a core sample and dynamics of pressure drop across the sample and dynamics of a flow rate of a liquid leaving the sample are determined. Using an X-ray micro Computed Tomography a profile of concentration of particles of the drilling mud penetrated into the sample is determined. A mathematical model is developed for the internal mudcake to describe dynamics of changes in concentration of the particles of the drilling mud in a pore space of the core sample. A coupled mathematical model of the internal and the external mudcakes is created and parameters of the mathematical model of the internal mudcake are determined providing matching of simulation results to the experimental data on injection the drilling mud through the core sample and to the concentration profile of the particles of the drilling mud.

Abstract translation: 为了预测暴露于钻井泥浆的钻井泥浆，钻井泥浆和储层流体的滤液的钻井泥浆的近井筒区域中的地层的性质。 确定外部泥饼的性质，核心样品的孔隙率和渗透率。 创建外部泥饼的数学模型。 钻井泥浆通过核心样品注入，并且测定样品上的压降动力学和离开样品的液体流速的动力学。 使用X射线微观计算机断层扫描确定穿透到样品中的钻井泥浆颗粒浓度分布。 开发了一种用于内部泥饼的数学模型，以描述核心样品孔隙空间中钻井泥浆颗粒浓度变化的动力学。 建立内部和外部泥浆的耦合数学模型，确定内部泥饼数学模型的参数，提供模拟结果与通过岩心样品注入钻井泥浆的实验数据和 钻井泥浆颗粒。

公开(公告)号：US09898559B2

公开(公告)日：2018-02-20

申请号：US14331227

申请日：2014-07-15

Applicant: Schlumberger Technology Corporation

Inventor： Dmitry Mikhailov ,  Valery Vasilievich Shako ,  Nikita Ilyich Ryzhikov ,  Alexander Nikolaevich Nadeev

IPC: G06F17/50 ,  E21B37/00 ,  E21B43/00 ,  E21B49/00

CPC classification number: G06F17/5009 ,  E21B37/00 ,  E21B43/00 ,  E21B49/005

Abstract: In order to predict properties of a formation in a near-wellbore area exposed to a drilling mud rheological properties of the drilling mud, of a filtrate of the drilling mud and of a reservoir fluid are determined. Properties of an external mudcake, porosity and permeability of the core sample are determined. A mathematical model of the external mudcake is created. The drilling mud is injected through a core sample and dynamics of pressure drop across the sample and dynamics of a flow rate of a liquid leaving the sample are determined. Using an X-ray micro Computed Tomography a profile of concentration of particles of the drilling mud penetrated into the sample is determined. A mathematical model is developed for the internal mudcake to describe dynamics of changes in concentration of the particles of the drilling mud in a pore space of the core sample. A coupled mathematical model of the internal and the external mudcakes is created and parameters of the mathematical model of the internal mudcake are determined providing matching of simulation results to the experimental data on injection the drilling mud through the core sample and to the concentration profile of the particles of the drilling mud.

公开(公告)号：US09284835B2

公开(公告)日：2016-03-15

申请号：US14015943

申请日：2013-08-30

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Dmitry Mikhailov ,  Valery Vasilievich Shako ,  Evgeny Chuvilin ,  Evgeny Samarin

IPC: G01N33/24 ,  G01N5/00 ,  E21B49/00

CPC classification number: E21B49/005 ,  G01N5/00 ,  G01N33/241

Abstract: Determining weight concentration of clay in a sample of a porous material, a water-soluble salt of a metal is selected that enters in a selective ion exchange reaction with clay, with the general formula R+M−, where a metal R+ is selected from the group {Ba2+; Sr2+; Tl+; Rb+ . . . }, M− is selected from the group {Cln; NOn; OHn; CH3COO, SO4; . . . } in accordance with the table of solubility of inorganic substances in water. Clay is marked by means of mixing the clay with a water solution of the selected salt of the metal, residues of the salt of the metal that have not interacted with the clay are removed. X-ray fluorescent spectrometry of the marked clay and of the sample is conducted and content of the metal in the marked clay and natural content of the metal in the sample are determined. A water solution of the marked clay is pumped through the sample, the sample is dried and X-ray fluorescent spectrometry of the entire sample or of its individual segments is conducted. Content of the metal in the sample or in each segment is determined and weight concentrations of clay retained in the sample or in each of its segments are determined.

Abstract translation: 确定多孔材料样品中粘土的重量浓度，选择金属的水溶性盐，其进入与粘土的选择性离子交换反应，通式为R + M-，其中金属R +选自 组{Ba2 + Sr2 +; Tl + Rb +。 。 。 }，M-选自组{Cln; 非; OHn; CH3COO，SO4; 。 。 。 }按照无机物质在水中的溶解度表。 粘土通过将粘土与所选择的金属盐的水溶液混合，除去与粘土没有相互作用的金属盐的残余物的方式来标记。 进行标记粘土和样品的X射线荧光光谱测定，确定样品中金属的标记粘土和金属含量。 将标记粘土的水溶液泵送通过样品，将样品干燥，并进行整个样品或其各个片段的X射线荧光光谱。 确定样品或每个部分中金属的含量，并确定保留在样品中或其每个段中的粘土的重量浓度。