GB2576849A - Method of determining a mineralogical property or a petrophysical parameter - Google Patents

Method of determining a mineralogical property or a petrophysical parameter Download PDF

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Publication number
GB2576849A
GB2576849A GB1917093.5A GB201917093A GB2576849A GB 2576849 A GB2576849 A GB 2576849A GB 201917093 A GB201917093 A GB 201917093A GB 2576849 A GB2576849 A GB 2576849A
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GB
United Kingdom
Prior art keywords
single point
sample
magnetic field
petrophysical
drill cuttings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1917093.5A
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GB201917093D0 (en
GB2576849B (en
Inventor
Tugwell Andrew
Potter David
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Advanced Downhole Petrophysics Ltd
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Advanced Downhole Petrophysics Ltd
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Publication of GB201917093D0 publication Critical patent/GB201917093D0/en
Publication of GB2576849A publication Critical patent/GB2576849A/en
Application granted granted Critical
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • G01R33/16—Measuring susceptibility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30—Assessment of water resources

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The present invention relates to a method of determining a mineralogical property or a petrophysical or geohydrological parameter of a sample of drill cuttings from drilling during an oil, gas or water operation. The method comprises making first and second single point measurements of magnetic susceptibility of the sample of drill cuttings 50. The first single point measurement is made by applying a magnetic field having an applied magnetic field strength of at least 50 mT. The second single point measurement is made by applying a magnetic field having an applied magnetic field strength of less than 50 mT. The method further comprises determining the mineralogical property or a value of the petrophysical or geohydrological parameter in dependence on: the first and second single point measurements and no other measurement of magnetic susceptibility of the sample; and predetermined mineralogical property information or petrophysical or geohydrological parameter information stored as a function of magnetic susceptibility 54.

Claims (17)

  1. Claims:
    1 . A method of determining a mineralogical property or a petrophysical or geohydrological parameter of a sample of drill cuttings from drilling during an oil, gas or water operation, the method comprising: making first and second single point measurements of magnetic susceptibility of the sample of drill cuttings, the first single point measurement being made by applying a magnetic field having an applied magnetic field strength of at least 50 mT and the second single point measurement being made by applying a magnetic field having an applied magnetic field strength of less than 50 mT; and determining the mineralogical property or a value of the petrophysical or geohydrological parameter in dependence on: the first and second single point measurements and no other measurement of magnetic susceptibility of the sample; and predetermined mineralogical property information or petrophysical or geohydrological parameter information stored as a function of magnetic susceptibility.
  2. 2. The method according to claim 1 wherein the sample comprises magnetite and the first single point measurement is made by applying a magnetic field having an applied magnetic field strength of at least 100 mT, 200 mT, 300 mT, 400 mT, 500 mT, 600 mT, 700 mT, 800 mT, 900 mT, 1 T, 1 .1 T, 1 .2 T, 1 .3T, 1 .4 T or 1 .5 T.
  3. 3. The method according to claim 1 or 2 wherein the sample comprises at least one of nickel and cobalt and the first single point measurement is made by applying a magnetic field having an applied magnetic field strength of at least 500 mT, 600 mT, 700 mT, 800 mT, 900 mT, 1 T, 1 .1 T, 1 .2 T, 1 .3T, 1 .4 T or 1 .5 T.
  4. 4. The method according to any one of the preceding claims wherein the sample comprises steel and the first single point measurement is made by applying a magnetic field having an applied magnetic field strength of at least 1 .2 T, 1 .3 T, 1 .4 T, 1 .5 T, 1 .6 T, 1 .7 T or 1 .8 T.
  5. 5. The method according to any one of the preceding claims wherein the predetermined mineralogical property information or petrophysical or geohydrological parameter information is stored as a function of magnetic susceptibility in the form of a look-up table.
  6. 6. The method according to any one of the preceding claims further comprising determining mineralogical property information or petrophysical or geohydrological parameter information as a function of magnetic susceptibility by magnetic susceptibility measurement of reference samples of known composition.
  7. 7. The method according to any one of the preceding claims further comprising comparing the first and second single point measurements of magnetic susceptibility and determining one of: there is substantially no ferromagnetic or ferrimagnetic material comprised in the sample if the first and second single point measurements are within 5% of each other; and determining that there is ferromagnetic or ferrimagnetic material comprised in the sample if the first single point measurement is more than 5% lower than the second single point measurement.
  8. 8. The method according to any one of the preceding claims further comprising comparing the first and second single point measurements of magnetic susceptibility and determining an amount of ferromagnetic or ferrimagnetic material comprised in the sample in dependence on the difference between the first and second single point measurements of magnetic susceptibility .
  9. 9. The method according to any one of the preceding claims further comprising separating ferromagnetic or ferrimagnetic material from the sample of drill cuttings before the step of making single point measurements of magnetic susceptibility.
  10. 10. The method according to claim 9 wherein separating ferromagnetic or ferrimagnetic material from the sample of drill cuttings comprises applying a magnetic field to the sample of drill cuttings.
  11. 1 1 . The method according to any one of the preceding claims further comprising drying the sample of drill cuttings before the first and second single point measurements are made.
  12. 12. The method according to any one of the preceding claims further comprising fragmenting the sample of drill cuttings before the first and second single point measurements are made.
  13. 13. The method according to claim 12 further comprising sieving the particles before the first and second single point measurements are made.
  14. 14. A method of determining a mineralogical property or a petrophysical or geohydrological parameter of a sample of drill cuttings from drilling during a petroleum or water exploration operation, the method comprising the steps according to any one of the preceding claims.
  15. 15. A method of determining a mineralogical property or a petrophysical parameter of a sample of drill cuttings from drilling during a petroleum development operation, the method comprising the steps according to any one of claims 1 to 13.
  16. 16. The method according to claim 15 further comprising storing in perpetuity data based on magnetic susceptibility measurements of plural samples of drill cuttings.
  17. 17. Apparatus for determining a mineralogical property or a petrophysical or geohydrological parameter of a sample of drill cuttings from drilling during an oil, gas or water operation, the apparatus comprising: magnetic susceptibility measurement apparatus configured to make first and second single point measurements of magnetic susceptibility of the sample of drill cuttings, the first single point measurement being made by applying a magnetic field having an applied magnetic field strength of at least 50 mT and the second single point measurement being made by applying a magnetic field having an applied magnetic field strength of less than 50 mT; and processing apparatus configured to determine the mineralogical property or a value of the petrophysical or geohydrological parameter in dependence on: the first and second single point measurements and no other measurement of magnetic susceptibility of the sample; and predetermined mineralogical property information or petrophysical or geohydrological parameter information stored as a function of magnetic susceptibility.
GB1917093.5A 2017-05-01 2018-04-30 Method of determining a mineralogical property or a petrophysical parameter Active GB2576849B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1706888.3A GB201706888D0 (en) 2017-05-01 2017-05-01 Method of determining a mineralogical property or a petrophysical property
PCT/GB2018/051156 WO2018203043A1 (en) 2017-05-01 2018-04-30 Method of determining a mineralogical property or a petrophysical parameter

Publications (3)

Publication Number Publication Date
GB201917093D0 GB201917093D0 (en) 2020-01-08
GB2576849A true GB2576849A (en) 2020-03-04
GB2576849B GB2576849B (en) 2022-01-12

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GBGB1706888.3A Ceased GB201706888D0 (en) 2017-05-01 2017-05-01 Method of determining a mineralogical property or a petrophysical property
GB1917093.5A Active GB2576849B (en) 2017-05-01 2018-04-30 Method of determining a mineralogical property or a petrophysical parameter

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GBGB1706888.3A Ceased GB201706888D0 (en) 2017-05-01 2017-05-01 Method of determining a mineralogical property or a petrophysical property

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GB (2) GB201706888D0 (en)
WO (1) WO2018203043A1 (en)

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* Cited by examiner, † Cited by third party
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CN111678975B (en) * 2020-05-06 2023-04-11 武汉科技大学 Method for testing ore grade distribution

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5944195A (en) * 1995-07-05 1999-08-31 Exxon Production Research Company Method for separation of solids from drilling fluids by magnetic separation and centrifugation
US20070108982A1 (en) * 2003-11-12 2007-05-17 David Potter Method and device for determining petrophysical parameters
US20150090292A1 (en) * 2013-09-27 2015-04-02 Michael John DePatie Drill cutting washing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5944195A (en) * 1995-07-05 1999-08-31 Exxon Production Research Company Method for separation of solids from drilling fluids by magnetic separation and centrifugation
US20070108982A1 (en) * 2003-11-12 2007-05-17 David Potter Method and device for determining petrophysical parameters
US20150090292A1 (en) * 2013-09-27 2015-04-02 Michael John DePatie Drill cutting washing apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GERARD GLEIZES ET AL "Magnetic susceptibilty of the Mont-Louis andorra ilmente-type granite (Pyrenees) : A New tool for petrographic characterization and regional mapping of zoned granite plutons, JOURNAL GEOPHYSICAL RESEARCH vol. 98, No. B3, 10 March 1993 (1993-03-10) pages 4317-4331. *
PEREZ-PEREZ A ET AL : Association between magnetic susceptibilities and hydrocarbon deposits in the Barinas-Apure Basin Venezuela, GEOPHYSICS , SOCIETY OF EXPLORATION GEOPHYSICS, US, vol. 76, no. 6, 1 November 2011 (2011-11-01) pages L35-L41 - ISSN: 0016-8033, DOI 10.1190/GEO2010-0274.1 *

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GB201706888D0 (en) 2017-06-14
WO2018203043A1 (en) 2018-11-08
GB201917093D0 (en) 2020-01-08
GB2576849B (en) 2022-01-12

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