GB2587334A - Apparatus and method for drilling cuttings characterisation - Google Patents
Apparatus and method for drilling cuttings characterisation Download PDFInfo
- Publication number
- GB2587334A GB2587334A GB1913399.0A GB201913399A GB2587334A GB 2587334 A GB2587334 A GB 2587334A GB 201913399 A GB201913399 A GB 201913399A GB 2587334 A GB2587334 A GB 2587334A
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- United Kingdom
- Prior art keywords
- cuttings
- kinetic energy
- drill cuttings
- mechanical
- hyperspectral imaging
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- 238000005520 cutting process Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 238000012512 characterization method Methods 0.000 title description 2
- 238000000701 chemical imaging Methods 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000000295 emission spectrum Methods 0.000 claims abstract description 10
- 230000000930 thermomechanical effect Effects 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
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
Provided is a hyperspectral imaging method for drill cuttings in a return downhole drilling process comprising; imparting kinetic energy to drill cuttings and capturing hyperspectral images of said drilling cuttings’ emission spectra. The imparted kinetic energy may be via direct mechanical heating means 2 and hyperspectral imaging may be performed by imaging device 6 which may be located proximate the outlet 4 of heating means 2. Heating means 2 may be a thermo-mechanical cuttings cleaning (TCC) device and the energy imparted may raise the temperature of the cuttings to at least 60oC. Also provided is a hyperspectral imaging system for imaging drill cuttings in a return downhole drilling process, comprising a mechanical device for imparting kinetic energy to the drill cuttings and a hyperspectral imaging device for imaging the emission spectra of the drill cuttings to which kinetic energy has been imparted to. The mechanical device may be a thermo-mechanical cuttings cleaning (TCC) device.
Description
APPARATUS AND METHOD FOR DRILLING CUTTINGS CHARACTERISATION
FIELD
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.
BACKGROUND
HSI imaging is used to identify the mineralogy of drilled cuttings. Conventionally the reflectance of a sample is measured by illuminating the sample using a suitable light source.
For Short Wave Infra-Red (SWIR) HSI a halogen lamp is often used to illuminate the sample. SWIR is suitable for classifying many mineral types of interest. However, some minerals do not have diagnostic features in this range.
In the LWIR range, it is possible to discriminate silicate materials, such as quartz and feldspars. Illumination in the LWIR is typically by a heat lamp. The surface temperature of the heat lamp prohibits locating it unenclosed in an explosive atmosphere; window materials transparent to LWIR are either unavailable or prohibitively expensive making an enclosure difficult to design. Some prior art documents refer to LWIR hyperspectral imaging whilst using reflectance rather than emission spectra. In particular, whilst a heat lap can be used safely under laboratory conditions, the use of heat lamps or any heat generating equipment may be dangerous or prohibited under health and safety requirements on various worksites, such as oil rigs for example.
It is known to perform both SWIR and LWIR HSI on drill cores in a batch process, performed either on site or more commonly in a lab. Samples of the drill cuttings are taken from the returned drill fluid and processed to form solid drill cores, which can be analysed in various ways including all types of HSI, X-ray and all types of microscopy techniques, for example. For example, both short wave IR HSI, and LWIR HSI can be performed in a single apparatus, together with an optical camera, on drill cores in a batch process.
It has been suggested to perform continuous Infrared HSI, for example, EP-A-2689278 (US-B-9016399) discloses the use of hyperspectral imaging on a shaker. 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. In view of the general knowledge of the skilled person, it would appear that EP-A-2689278 discloses a reflective hyperspectral analysis technique.
W02013-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".
SUMMARY
Consequently, it would be desirable to provide a continuous hyperspectral inspection system that can provide LWIR for use in situation where the material being analysed is contaminated with flammable/ inflammable material, for example, in circumstances where a heat lamp or alternative direct heating method cannot be used without risk of, for example, an explosion.
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.
There is also provided a 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.
DRAWINGS
Embodiments of the invention will now be described in more detail, and by way of example only with reference to the accompanying drawings, in which: Figure 1 is a schematic of a system representation of a system in accordance with the invention; Figure 2 is a flow diagram setting out method steps including the method steps in accordance with an embodiment.
DESCRIPTION
It is desirable to obtain outputs from both SWIR and LWIR spectroscopy for mineralogical purposes from the drilling fluid returned from a down hole drilling process. However, in order to perform continuous automated hyperspectral analysis of the cuttings during the drilling process (i.e. in the cuttings disposal path) using the emission spectra required for LWIR HSI, it is necessary to heat the cuttings. Use of a heat lamp or other standard heating means for LWIR HSI, is not practical for close range analysis of flammable materials such as drill cuttings which may be coated in hydrocarbons for example. Solutions such as the provision of window materials are either unavailable or prohibitively expensive.
In this document the term "continuous" is intended to distinguish from batch processing, and the inspection is onsite where the drill fluid is being used.
It is therefore proposed to include a direct means of heating the fluids on the return path. In particular, 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.
A particularly convenient means for providing kinetic energy sufficient to heat the cuttings, may be found by using a thermomechanical cuttings cleaning apparatus or thermos-mechanical cleaner (TCC), which are sometimes provided in order to clean the cuttings of oil contamination in order to make it suitable for discharge to the sea. In 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.
Referring now to figure 1, 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.
In the present embodiment the disposal path includes a heating apparatus 2. In an embodiment the heating apparatus 2, is a mechanical heating apparatus such as thermomechanical cleaner (TCC), as an example of a kinetic energy imparting device. Thus the cuttings and any drilling fluid residue is transferred on the cuttings disposal path to the heating apparatus 2. 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.
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. Having 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.
Figure 2 is a flow chart of a method including method steps according to the present invention. In 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.
Finally, the heated cuttings pass beneath a suitably arranged LWIR hyperspectral imaging device, which continuously captures the hyperspectral emissions of the heated cuttings. Thus the hyperspectral imaging device is located within or near an outlet of the apparatus providing the kinetic energy to the cuttings.
Embodiments of the invention have been described. Modifications will suggest themselves to those skilled in the art without departing from the scope of the invention as defined in the claims. Whist the TCC has been identified as a particularly convenient heating means -other direct means of heating the cuttings might be used instead. In particular, when the particular drill site does not require a TCC for cleaning the cuttings before disposal, a bespoke heating unit can be provided in the drill cuttings return path.
Claims (1)
- CLAIMS: 1. 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 2. The method of claim 1, wherein kinetic energy is imparted to the drill cuttings by direct mechanical heating.3. The method of claim 1 or 2, wherein a hyperspectral imaging device is 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.4. The method of any one of claim 1, 2, or 3, wherein kinetic energy is imparted to the drill cuttings by a thermo-mechanical cuttings cleaning device.5. The method of any one of claims 1, 2, 3 01 4, wherein sufficient kinetic energy is 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.6. A 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.7. The hyperspectral imaging system as a claimed in claim 6, wherein the mechanical device is configured to impart kinetic energy to the drill cuttings by direct mechanical heating.8. The hyperspectral imaging system as a claimed in claim 6 or 7, wherein the hyperspectral imaging device is 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.9. The hyperspectral imaging system as a claimed in claim 6, 7 or 8, wherein the mechanical device is a thermo-mechanical cuttings cleaning device.10. The hyperspectral imaging system as a claimed in any one of claims 6, 7, 8 or 9 wherein the mechanical device is configured to 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.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1913399.0A GB2587334B (en) | 2019-09-17 | 2019-09-17 | Apparatus and method for drilling cuttings characterisation |
| PCT/NO2020/050236 WO2021054838A1 (en) | 2019-09-17 | 2020-09-14 | Apparatus and method for drilling cuttings characterisation |
| NO20220381A NO20220381A1 (en) | 2019-09-17 | 2022-03-29 | Apparatus and method for drilling cuttings characterisation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1913399.0A GB2587334B (en) | 2019-09-17 | 2019-09-17 | Apparatus and method for drilling cuttings characterisation |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201913399D0 GB201913399D0 (en) | 2019-10-30 |
| GB2587334A true GB2587334A (en) | 2021-03-31 |
| GB2587334B GB2587334B (en) | 2021-11-10 |
Family
ID=68315372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1913399.0A Active GB2587334B (en) | 2019-09-17 | 2019-09-17 | Apparatus and method for drilling cuttings characterisation |
Country Status (3)
| Country | Link |
|---|---|
| GB (1) | GB2587334B (en) |
| NO (1) | NO20220381A1 (en) |
| WO (1) | WO2021054838A1 (en) |
Citations (3)
| 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 |
| WO2013089683A1 (en) * | 2011-12-13 | 2013-06-20 | Halliburton Energy Services, Inc. | Down hole cuttings analysis |
| EP2689278A1 (en) * | 2011-03-23 | 2014-01-29 | Halliburton Energy Services, Inc. | Apparatus and methods for lithlogy and mineralogy determinations |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2225434A2 (en) * | 2007-12-13 | 2010-09-08 | DLD Associates Limited | Waste solid cleaning apparatus |
| US10796424B2 (en) * | 2015-12-04 | 2020-10-06 | Schlumberger Technology Corporation | Shale shaker imaging system |
| WO2019157413A1 (en) * | 2018-02-12 | 2019-08-15 | Schlumberger Technology Corporation | Methods and systems for characterizing properties of reservoir rock |
-
2019
- 2019-09-17 GB GB1913399.0A patent/GB2587334B/en active Active
-
2020
- 2020-09-14 WO PCT/NO2020/050236 patent/WO2021054838A1/en active Application Filing
-
2022
- 2022-03-29 NO NO20220381A patent/NO20220381A1/en unknown
Patent Citations (3)
| 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 |
| EP2689278A1 (en) * | 2011-03-23 | 2014-01-29 | Halliburton Energy Services, Inc. | Apparatus and methods for lithlogy and mineralogy determinations |
| WO2013089683A1 (en) * | 2011-12-13 | 2013-06-20 | Halliburton Energy Services, Inc. | Down hole cuttings analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20220381A1 (en) | 2022-03-29 |
| GB2587334B (en) | 2021-11-10 |
| WO2021054838A1 (en) | 2021-03-25 |
| GB201913399D0 (en) | 2019-10-30 |
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