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    TOOLS FOR USE IN OBSERVATION WELLS
    2.
    发明申请
    TOOLS FOR USE IN OBSERVATION WELLS 审中-公开
    工具用于观察井

    公开(公告)号：US20160238734A1

    公开(公告)日：2016-08-18

    申请号：US15027116

    申请日：2014-10-02

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Andrea Valori ,  Mohammed Badri ,  Reza Taherian

    IPC: G01V3/32 ,  G01R33/50 ,  G01V3/30

    CPC classification number: G01V3/32 ,  E21B47/0905 ,  G01R33/50 ,  G01V3/30

    Abstract: A permanent monitoring tool is provided and disposed in a wellbore. Measurements are made at different times using the permanent monitoring tool on a region of a formation penetrated by the wellbore. One or more properties of the formation are inferred at one or more depths of investigation within the region using the measurements. Any changes in the one or more inferred formation properties are determined and one or more reservoir management decisions are made based on the determined changes. The well may be an observation well, an injector well, or a production well. The permanent monitoring tool may be a magnetic resonance tool or an electromagnetic tool. The measurements may be stacked to improve the signal-to-noise ratio of the signal. Different depths of investigation may be selected using antenna arrays of different lengths. The inferred properties may be saturation or resistivity. Conductive or non-conductive casing may be used.

    Abstract translation: 提供永久监测工具并将其置于井眼中。 在不同时间使用永久性监测工具在井眼渗透的地层区域进行测量。 使用测量，在区域内的一个或多个调查深度中推断地层的一个或多个属性。 确定一个或多个推断的地层属性的任何变化，并且基于确定的变化进行一个或多个储层管理决定。 井可以是观察井，注入井或生产井。 永久监视工具可以是磁共振工具或电磁工具。 可以堆叠测量以改善信号的信噪比。 可以使用不同长度的天线阵列来选择不同的调查深度。 推断的性质可能是饱和或电阻率。 可以使用导电或非导电套管。

    Prediction of gas production rates from time-dependent NMR measurements
    3.
    发明授权
    Prediction of gas production rates from time-dependent NMR measurements 有权

    公开(公告)号：US10436727B2

    公开(公告)日：2019-10-08

    申请号：US15153924

    申请日：2016-05-13

    Applicant: Schlumberger Technology Corporation

    Inventor： Andrea Valori ,  Reza Taherian ,  Farhan Ali ,  Wael Abdallah ,  Mohammed Badri ,  Richard Lewis

    IPC: G01N24/08 ,  G01R33/44

    Abstract: A tool having a pump-out unit, pumping unit, and NMR unit is disposed in a wellbore. On a pump-up cycle, after removing borehole fluids, a fluid is injected into a region of investigation. NMR measurements are made while fluid migrates into the region of investigation. On a production cycle, pressure is removed, allowing fluid to exit the formation while NMR measurements are made. A rate of fluid production is estimated using the time-dependent NMR measurements. Alternatively, the mass of a sample is measured. Fluid is injected into the sample and the mass of the injected sample is measured. Pressure is removed and the mass of the injected sample as the fluid migrates out of the sample is measured. The change in mass of the injected sample as the fluid migrates out of the sample is determined and a rate of fluid production is estimated using the determined change in mass.

    Formation properties from time-dependent nuclear magnetic resonance (NMR) measurements
    4.
    发明授权
    Formation properties from time-dependent nuclear magnetic resonance (NMR) measurements 有权

    公开(公告)号：US10338267B2

    公开(公告)日：2019-07-02

    申请号：US14576648

    申请日：2014-12-19

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Mohammed Badri ,  Andrea Valori ,  Wael Abdallah ,  Reza Taherian

    IPC: G01V3/32 ,  G01V3/38

    Abstract: A NMR logging tool is provided and disposed in a wellbore at some desired depth. Packers are provided and actuated to hydraulically isolate a section of the wellbore and form a cavity between the NMR logging tool and the wall of the isolated section of the wellbore. The cavity is evacuated until a first desired pressure within the cavity is attained. Fluid is injected into the cavity until a second desired pressure within the cavity is attained. A plurality of NMR measurements is made on the region of the formation, each of the plurality of measurements being made at different times. Formation properties are inferred using the measurements. A baseline NMR measurement may be made when a first desired pressure is attained. A time-zero NMR measurement may be made when a second desired pressure is attained. Similar measurements may be made in a laboratory on a sample.

    Wettability of Formations with Heavy Oil
    5.
    发明申请
    Wettability of Formations with Heavy Oil 审中-公开

    公开(公告)号：US20190101665A1

    公开(公告)日：2019-04-04

    申请号：US15724056

    申请日：2017-10-03

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Andrea Valori ,  Reza Taherian ,  Wael Abdallah ,  Farhan Ali ,  Mohammed Badri

    IPC: G01V3/32

    Abstract: A measurement device makes measurements on a region of investigation in which a native fluid or complex fluid (e.g., emulsified fluid) has been replaced by a fluid of different viscosity. Various methods such as core flooding, pressure cycling, centrifuging, or imbibition may be used to replace the native fluid. The replacement fluid may include alkanes, alkenes, or some combination of those, and is preferably non-polar. The replacement fluid may mix with the native fluid within the pores to produce a mixture having a different viscosity than the native fluid. Measurements can be made on a sample in a lab or on an isolated region of a subsurface formation. Standard measurement techniques such as the Amott-Harvey technique or the United States Bureau of Mines technique may be used. Alternatively, NMR measurements may be performed. A parameter such as wettability and relaxivity is estimated using data obtained by the measurement device.

    NMR Based Reservoir Wettability Measurements
    6.
    发明申请
    NMR Based Reservoir Wettability Measurements 审中-公开
    基于NMR的储层润湿性测量

    公开(公告)号：US20160334346A1

    公开(公告)日：2016-11-17

    申请号：US15147298

    申请日：2016-05-05

    Applicant: Schlumberger Technology Corporation

    Inventor： Chanh Cao Minh ,  Steve Crary ,  Philip M. Singer ,  Andrea Valori ,  Henry N. Bachman

    IPC: G01N24/08 ,  G01V3/38 ,  G01N13/00 ,  G01V3/32

    Abstract: A method for determining a wettability of a subterranean formation (or formation core) includes either deploying a nuclear magnetic resonance (NMR) logging tool in a subterranean wellbore or deploying a formation core sample in a laboratory based NMR tool. NMR measurements of the formation (or formation core) are obtained and used to compute the wettability. The NMR measurements are processed to generate a two dimensional diffusion relaxation map (a D/T2 map) which is in turn processed to compute the wettability.

    Abstract translation: 用于确定地层（或地层核心）的润湿性的方法包括在基于实验室的NMR工具中将核磁共振（NMR）测井工具部署在地下井眼中或部署地层核心样品。 获得地层（或地层核心）的NMR测量值，并用于计算润湿性。 处理NMR测量以产生二维扩散弛豫图（D / T2图），其依次被处理以计算润湿性。

    METHODS FOR SEPARATING OIL AND WATER ON MULTIDIMENSIONAL NUCLEAR MAGNETIC RESONANCE MAPS
    7.
    发明申请
    METHODS FOR SEPARATING OIL AND WATER ON MULTIDIMENSIONAL NUCLEAR MAGNETIC RESONANCE MAPS 审中-公开
    用于分离多个核磁共振膜上的油和水的方法

    公开(公告)号：US20150130460A1

    公开(公告)日：2015-05-14

    申请号：US14536823

    申请日：2014-11-10

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Andrea Valori ,  Mohammed Badri ,  Reza Taherian ,  Wael Abdallah

    IPC: G01R33/48

    CPC classification number: G01V3/32 ,  G01N24/081

    Abstract: Methods are provided for separating oil and water signals in multidimensional nuclear magnetic resonance (NMR) maps. In one embodiment, separate multidimensional NMR maps are provided for oil and water content. In another embodiment, an oil-water boundary and a water-gas boundary are generated on a D-T2 map. The boundaries may be curved boundaries or lines.

    Abstract translation: 提供了用于在多维核磁共振（NMR）图中分离油和水信号的方法。 在一个实施方案中，提供用于油和水含量的单独的多维NMR图。 在另一个实施例中，在D-T2图上产生油水边界和水气边界。 边界可以是弯曲的边界或线。

    PREDICTION OF GAS PRODUCTION RATES FROM TIME-DEPENDENT NMR MEASUREMENTS
    10.
    发明申请
    PREDICTION OF GAS PRODUCTION RATES FROM TIME-DEPENDENT NMR MEASUREMENTS 审中-公开
    从时间依赖性NMR测量中预测气体产生率

    公开(公告)号：US20160334347A1

    公开(公告)日：2016-11-17

    申请号：US15153924

    申请日：2016-05-13

    Applicant: Schlumberger Technology Corporation

    Inventor： Andrea Valori ,  Reza Taherian ,  Farhan Ali ,  Wael Abdallah ,  Mohammed Badri ,  Richard Lewis

    IPC: G01N24/08 ,  G01R33/44 ,  G01V3/32

    Abstract: A tool having a pump-out unit, pumping unit, and NMR unit is disposed in a wellbore. On a pump-up cycle, after removing borehole fluids, a fluid is injected into a region of investigation. NMR measurements are made while fluid migrates into the region of investigation. On a production cycle, pressure is removed, allowing fluid to exit the formation while NMR measurements are made. A rate of fluid production is estimated using the time-dependent NMR measurements. Alternatively, the mass of a sample is measured. Fluid is injected into the sample and the mass of the injected sample is measured. Pressure is removed and the mass of the injected sample as the fluid migrates out of the sample is measured. The change in mass of the injected sample as the fluid migrates out of the sample is determined and a rate of fluid production is estimated using the determined change in mass.

    Abstract translation: 具有抽出单元，泵送单元和NMR单元的工具设置在井眼中。 在抽油机循环中，在排除钻井液之后，将流体注入到调查区域。 当流体迁移到调查区域时进行NMR测量。 在生产周期中，去除压力，允许流体在进行NMR测量时离开地层。 使用时间依赖性NMR测量来估计流体生产速率。 或者，测量样品的质量。 将流体注入样品中，并测量注入样品的质量。 测量压力，并测量随着流体迁移出样品的注入样品的质量。 确定流体从样品中移出的注入样品的质量变化，并且使用确定的质量变化来估计流体产生的速率。

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