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.

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makes measurements on a region of investigation in which a native fluid or complex fluid (e.g., emulsified fluid) has been replaced by a fluid of different viscosity.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.

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。