公开(公告)号：US10094795B2

公开(公告)日：2018-10-09

申请号：US14990689

申请日：2016-01-07

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Mohammed Badri ,  Mohammed Fadhel Al-Hamad ,  Abdullah Habelreeh ,  Wael Abdallah ,  Reza Taherian

IPC: G01R31/02 ,  G01N27/02 ,  G01N27/04

Abstract: A tool having two current electrodes, three or more voltage electrodes, and a measurement device capable of making electrical measurements is provided, along with a sample. With electrical connectivity to the sample, one current electrode is disposed at one location on the sample while the other current electrode is disposed at another location on the sample, and the three or more voltage electrodes are disposed on the sample intermediate the two current electrodes. An electric current is passed through the sample. The measurement device is used to make a first set of electrical measurements that involve a first pair of voltage electrodes and to make a second set of electrical measurements that involve a second pair of voltage electrodes. The first set of electrical measurements is compared to the second set of electrical measurements. It is inferred whether the sample has heterogeneous electrical properties using the compared electrical measurements.

公开(公告)号：US20170199141A1

公开(公告)日：2017-07-13

申请号：US14990689

申请日：2016-01-07

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Mohammed Badri ,  Mohammed Fadhel Al-Hamad ,  Abdullah Habelreeh ,  Wael Abdallah ,  Reza Taherian

IPC: G01N27/02

CPC classification number: G01N27/028 ,  G01N27/041

Abstract: A tool having two current electrodes, three or more voltage electrodes, and a measurement device capable of making electrical measurements is provided, along with a sample. With electrical connectivity to the sample, one current electrode is disposed at one location on the sample while the other current electrode is disposed at another location on the sample, and the three or more voltage electrodes are disposed on the sample intermediate the two current electrodes. An electric current is passed through the sample. The measurement device is used to make a first set of electrical measurements that involve a first pair of voltage electrodes and to make a second set of electrical measurements that involve a second pair of voltage electrodes. The first set of electrical measurements is compared to the second set of electrical measurements. It is inferred whether the sample has heterogeneous electrical properties using the compared electrical measurements.