WO2021054838A1 - Appareil et procédé de caractérisation de déblais de forage - Google Patents

Appareil et procédé de caractérisation de déblais de forage Download PDF

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Publication number
WO2021054838A1
WO2021054838A1 PCT/NO2020/050236 NO2020050236W WO2021054838A1 WO 2021054838 A1 WO2021054838 A1 WO 2021054838A1 NO 2020050236 W NO2020050236 W NO 2020050236W WO 2021054838 A1 WO2021054838 A1 WO 2021054838A1
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WO
WIPO (PCT)
Prior art keywords
cuttings
kinetic energy
drill cuttings
hyperspectral imaging
mechanical
Prior art date
Application number
PCT/NO2020/050236
Other languages
English (en)
Inventor
Åsmund HJULSTAD
Original Assignee
Equinor Energy As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Equinor Energy As filed Critical Equinor Energy As
Publication of WO2021054838A1 publication Critical patent/WO2021054838A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/2823—Imaging spectrometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/005—Testing the nature of borehole walls or the formation by using drilling mud or cutting data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N2021/178—Methods for obtaining spatial resolution of the property being measured
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light

Definitions

  • the invention relates to a method and system for inspection of drilling cuttings and, in particular, to the use of Long Wave Infra-Red (LWIR) Hyper-Spectral Imaging (HSI) to analyse drill cuttings in the returned drill fluid from a downhole drilling process.
  • LWIR Long Wave Infra-Red
  • HAI Hyper-Spectral Imaging
  • HSI imaging is used to identify the mineralogy of drilled cuttings.
  • the reflectance of a sample is measured by illuminating the sample using a suitable light source.
  • SWIR Short Wave Infra-Red
  • Cuttings are retrieved from a well bore while drilling the formation and a hyperspectral image of the cuttings is continuously obtained and analysed to determine formation characteristics.
  • the document merely refers to a “Hyperspectral Image Capture Mechanism” or HICM. No further discussion of the hyperspectral-imaging device is discussed and no problem in relation to obtaining LWIR HSI data is considered. In other words, LWIR HSI is not disclosed.
  • EP-A-2689278 discloses a reflective hyperspectral analysis technique.
  • WO2013-A-89683 discloses SWIR hyperspectral analysis since the system provides illumination in the form of “white light, tungsten light, infrared light, or light emitting diodes (LEDs) to illuminate cuttings deposited on a shaker”.
  • the invention provides a method of hyperspectral inspection of drill cuttings in the return path from a downhole drilling process, the method comprising, imparting kinetic energy to the drill cuttings, performing hyperspectral imaging of the emission spectra of the drill cuttings to which kinetic energy has been applied.
  • the kinetic energy may be imparted to the drill cuttings by direct mechanical heating.
  • the hyperspectral imaging device may be located proximate an outlet of a mechanical device that imparts kinetic energy to the drill cuttings, the mechanical device being located in the cuttings return path.
  • the kinetic energy may be imparted to the drill cuttings by a thermo-mechanical cuttings cleaning device.
  • Sufficient kinetic energy may be imparted to the drill cuttings to raise the temperature of the drill cuttings to at least 60°C, or at least 80°C, or at least 100°C.
  • hyperspectral imaging system for hyperspectral imaging of drill cuttings returned from a downhole drilling process comprising, a mechanical device for imparting kinetic energy to the drill cuttings, a hyperspectral imaging device for imaging the emission spectra of the drill cuttings to which kinetic energy has been applied.
  • the mechanical device may be configured to impart kinetic energy to the drill cuttings by direct mechanical heating.
  • the hyperspectral imaging device may be located proximate an outlet of the mechanical device that imparts kinetic energy to the drill cuttings, the mechanical device being located in the cuttings return path.
  • the mechanical device may be a thermo-mechanical cuttings cleaning device.
  • the mechanical device may impart sufficient kinetic energy to the drill cuttings to raise the temperature of the drill cuttings to at least 60°C, or at least 80°C, or at least 100°C.
  • Figure 1 is a schematic of a system representation of a system in accordance with the invention.
  • FIG. 2 is a flow diagram setting out method steps including the method steps in accordance with an embodiment.
  • imparting kinetic energy to the cuttings in the drill fluid may constitute a safe way of raising the temperature of the cuttings sufficiently to image the emission spectra.
  • thermomechanical cuttings cleaning apparatus or thermos-mechanical cleaner (TCC)
  • TCC thermos-mechanical cleaner
  • a TCC mechanical action is applied directly to the drill cuttings via hammers that create friction which cause temperatures to rise above the boiling points of water and oil. Once these temperatures are reached, hydrocarbons are removed from the solids to an acceptable disposal limit ( ⁇ 1% oil on cuttings). The oil and water vapors that remain are then fed through the TCC condensing system and recovered in the form of recovered heavy oil, recovered light oil, and recovered water.
  • the inventors have discovered that in a TCC the cuttings are heated as part of the cleaning process to temperatures sufficiently high to emit infrared radiation in the LWIR range. Consequently, providing kinetic energy to the drilling fluid by any such mechanical means can be used to provide the heat required to use emission spectra for LWIR hyperspectral imaging of the drilling fluid and cuttings. Consequently, locating a LWIR hyperspectral camera on the discharge path from the cuttings cleaning unit can be used to acquire the hyperspectral data to allow for improved identification of the mineralogy of the cuttings.
  • the drilling fluids and cuttings returned from a downhole drilling process are returned to the surface for treatment, including cuttings removal from the drilling fluid, for example sing a shale shaker.
  • the drilling fluid is then returned to the drilling mud pits for re-use after suitable treatment.
  • the cuttings continue on a cuttings disposal path 1.
  • the cuttings and or drilling fluid can be inspected by SWIR hyperspectral imaging on the return path as discussed above, for example while on the shaker table of the shale shaker or on the disposal path following the shaker table for example.
  • the disposal path includes a heating apparatus 2.
  • the heating apparatus 2 is a mechanical heating apparatus such as thermomechanical cleaner (TCC), as an example of a kinetic energy imparting device.
  • TCC thermomechanical cleaner
  • the heating apparatus 2 includes an inlet 3 and an outlet 4 shown schematically in Figure 1. The cuttings enter and exit the heating apparatus through the inlet 3 and outlet 4 respectively.
  • the heating apparatus 2 of the embodiment includes a vapour exhaust 8 through which vaporised liquids may exit the apparatus for collection, separation and treatment.
  • the heating apparatus 2 Since the purpose of the TCC is to remove contaminants from the cuttings so that the cuttings can be disposed of, for example at sea, in an environmental manner, when the heating apparatus 2 is a TCC there is also a vapour outlet (not shown).
  • the exhaust is optional in cases where the heating apparatus is not being used to clean the cuttings. For example, any vapour may be released via the outlet 4.
  • the heated cuttings exit the heating apparatus 2 on a disposal path 5. Flaving been heated by the imparted kinetic energy by the heating apparatus 2, the cuttings are at a sufficient temperature to provide emissions that can be captured by an emissions based LWIR hyperspectral imaging device. Consequently, a LWIR hyperspectral imaging device 6 is located proximate the outlet 4 in order to image the drill cuttings as they leave the outlet 4 of the heating apparatus 2.
  • the images from the LWIR hyperspectral imaging device 6 are processed by a processing unit 7. These images may be combined with other sensor readings such as from a SWIR hyperspectral camera and / or an optical camera.
  • Step 1 the drilling fluid from a downhole drilling process is received from the bore as is known on the return path to the mud pits. Various operations occur on this return path that are well known to the skilled person depending on the circumstances.
  • One such step is separation of the drilling fluid from the cuttings (step 2) by use of a shale shaker for example.
  • the drilling fluid may then be subjected to further processing before return to the mud pits for pumping back into the drilling bore for use as drilling fluid.
  • Step 2 is not essential to the invention since the hyperspectral imaging can be performed prior to the separation of the drill cuttings from the fluid. In practice it is convenient to remove the cuttings from the fluid.
  • Step 3 has been discussed above in detail.
  • the cuttings and any remaining drilling fluid is subjected to a process for imparting kinetic energy to the cuttings. Conveniently this process is carried out in an apparatus for directly applying mechanical energy to the cuttings and this can be the TCC if present. It is sufficient that the cuttings are heated to a sufficient temperature to emit radiation in a range and intensity for imaging by a LWIR hyperspectral imaging device.
  • the heated cuttings pass beneath a suitably arranged LWIR hyperspectral imaging device, which continuously captures the hyperspectral emissions of the heated cuttings.
  • the hyperspectral imaging device is located within or near an outlet of the apparatus providing the kinetic energy to the cuttings.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)

Abstract

L'invention concerne un système et un procédé d'inspection hyperspectrale de déblais de forage dans le trajet de retour (1) d'un processus de forage de fond de trou, le procédé comprenant l'application d'énergie cinétique aux déblais de forage et la réalisation d'une imagerie hyperspectrale des spectres d'émission des déblais de forage auxquels l'énergie cinétique a été appliquée.
PCT/NO2020/050236 2019-09-17 2020-09-14 Appareil et procédé de caractérisation de déblais de forage WO2021054838A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1913399.0 2019-09-17
GB1913399.0A GB2587334B (en) 2019-09-17 2019-09-17 Apparatus and method for drilling cuttings characterisation

Publications (1)

Publication Number Publication Date
WO2021054838A1 true WO2021054838A1 (fr) 2021-03-25

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PCT/NO2020/050236 WO2021054838A1 (fr) 2019-09-17 2020-09-14 Appareil et procédé de caractérisation de déblais de forage

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GB (1) GB2587334B (fr)
NO (1) NO20220381A1 (fr)
WO (1) WO2021054838A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009074815A2 (fr) * 2007-12-13 2009-06-18 Seimtec Limited Appareil de nettoyage de solides résiduels
EP2689278B1 (fr) * 2011-03-23 2016-11-16 Halliburton Energy Services, Inc. Appareil et procédés destinés à effectuer des déterminations de lithologie et de minéralogie
WO2017095557A1 (fr) * 2015-12-04 2017-06-08 Schlumberger Technology Corporation Système d'imagerie de tamis vibrant
WO2019157413A1 (fr) * 2018-02-12 2019-08-15 Schlumberger Technology Corporation Procédés et systèmes pour caractériser des propriétés d'une roche de réservoir

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5686724A (en) * 1996-03-05 1997-11-11 Texaco Inc. Method for determining oil content of an underground formation using wet cuttings
CN103988498B (zh) * 2011-12-13 2019-01-01 哈利伯顿能源服务公司 井下钻屑分析方法、设备及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009074815A2 (fr) * 2007-12-13 2009-06-18 Seimtec Limited Appareil de nettoyage de solides résiduels
EP2689278B1 (fr) * 2011-03-23 2016-11-16 Halliburton Energy Services, Inc. Appareil et procédés destinés à effectuer des déterminations de lithologie et de minéralogie
WO2017095557A1 (fr) * 2015-12-04 2017-06-08 Schlumberger Technology Corporation Système d'imagerie de tamis vibrant
WO2019157413A1 (fr) * 2018-02-12 2019-08-15 Schlumberger Technology Corporation Procédés et systèmes pour caractériser des propriétés d'une roche de réservoir

Also Published As

Publication number Publication date
GB2587334B (en) 2021-11-10
GB201913399D0 (en) 2019-10-30
NO20220381A1 (en) 2022-03-29
GB2587334A (en) 2021-03-31

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