LWD logging tools

LithoFusion
DartFusion
MaxFusion

LithoFusion is a next-generation azimuthal density and porosity (LWD) measurement tool integrated into a single instrument.

Benefits:

  • Accurate azimuthal density and porosity measurements in a single instrument
  • Imaging in water-based (WBM) and hydrocarbon-based (OBM) drilling fluids
  • 16-sector recording of azimuthal density and photoelectric factor (PEF) images
  • High-resolution images for ultrasonic profilers
  • Azimuthal density in four sectors
  • Data recording with a resolution of 2 points per 30 cm, allowing a maximum drilling speed of 110 m/h without loss of data quality
  • Azimuthal density with compensation for the wellbore diameter
  • Quick and safe installation of radioactive sources in a side-mounted instrument
 LithoFusion 475 (120 mm) Specifications
DescriptionSpecifications
ModelLithoFusion 475 (120 mm)
Drill Collar Nominal OD4.75 in. (API)
Max. Diameter5.25 in.
Thread connectionsNC38 (box / box)
Hole Size Range5 ⅞ in. to 6 ½ in.
Tool Length192 in.
Tool Weight1200 lbm
Max. Dogleg Severity15˚/100 ft Rotating 30˚/100 ft Sliding
Max. Operating Temperature150˚C (302˚F), 175˚C (347˚F) survival
Max. Pressure25,000 psi
Mud TypeWBM / OBM / SOBM
Power OptionExternal Battery / Turbine
Memory2GB, More than 400hrs (continuous)
Environmental MonitoringStickSlip, RPM, Temperature, Lateral & Axial Shocks & Vibrations
Density Measurement Specifications
DescriptionSpecifications
Range1.07 – 3.05 g/cc
Accuracy+/- 0.015 g/cc
Precision at 2.6 g/cc, 180 ft/hr+/- 0.015 g/cc
Vertical Resolution16”
Image Sectors16
Enhanced Vertical Resolution6”
Neutron Porosity Measurement Specifications
DescriptionSpecifications
Range0 – 100 p.u.
Accuracy+/- 0.5 p.u. (<10 p.u.), +/- 5% (10 – 40 p.u.)
Precision at 20 p.u., 180 ft/hr, 6” samples+/- 1 p.u.
Vertical Resolution18”
Photoelectric Factor Specifications
DescriptionSpecifications
Range1 – 10 B/e
Accuracy+/- 0.25 B/e
Precision at 20 p.u., 180 ft/hr, 6” samples+/- 0.25 B/e
Vertical Resolution2”
Ultrasonic Standoff and Reflected Amplitude Image Specifications
DescriptionSpecifications
Standoff Range0.375 – 2 in
Standoff Accuracy+/- 0.1 in.
Image Sectors128
Drilling Dynamics Specifications
DescriptionRangeResolution
Vibration RMS and Peak (Transverse & Axial)0-70 G0.1 G
Shock Count (Transverse & Axial)0-254 CPS1 CPS
RPM / Delta RPM254 / 300 pk-pk1 / 1 pk-pk

DartFusion is a next-generation tool for determining formation boundaries while drilling (LWD).

DartFusion Benefits

  • Mapping formation boundaries down to 6 m (20 ft)
  • Up to 48 rock resistivity curves
  • Wellbore diameter compensated resistivity curves
  • Azimuthal gamma and 16-sector gamma radiation rock images
  • Patented real-time visualization and interpretation of formation boundaries
 DartFusion 475 (120 mm) Specifications
DescriptionSpecifications
ModelDartFusion 475 (120 mm)
Drill Collar Nominal OD4.75 in. (API)
Max. Diameter5.375 in.
Thread connectionsNC38 (box / box)
Hole Size Range5 ¾ in. to 6 ¾ in.
Tool Length189 in.
Tool Weight1200 lbm
Max. Dogleg Severity15˚/100 ft Rotating | 30˚/100 ft Sliding
Max. Flow Rate400 galUS / min
Max. Operating Temperature150˚C (302˚F), 175˚C (347˚F) option
Max. Pressure20,000 psi
Mud TypeWBM / OBM/SOBM
Power OptionExternal Battery / Turbine
Downhole MemoryMore than 200 hrs (continuous)
Environmental MonitoringStickSlip, RPM, Temperature, Lateral & Axial Shocks and Vibrations
Resistivity Measurement Specifications
Operating Frequencies2 MHz, 500 kHz, 125 kHz
Resistivity Range / Accuracy
MeasurementRangeAccuracyRangeAccuracy
2 MHz PS0.1 - 60 Ω.m+/- 2%60 - 3000 Ω.m+/- 0.3 mS / m
500 kHz PS0.1 - 10 Ω.m+/- 4%10 - 100 Ω.m+/- 2 ms /m
2 MHz ATT0.1 - 20 Ω.m+/- 2%20 - 50 Ω.m+/-2 ms /m
500 kHz ATT0.1 - 5 Ω.m+/- 5%5 - 10 Ω.m+/-10 ms /m
Measurement Spacing20 in.28 in.36 in.
Depth of Investigation2 MHz20" (PS)38" (AT)23" (PS)43" (AT)26" (PS)48" (AT)
500 kHz27" (PS)59" (AT)34" (PS)63" (AT)40" (PS)67" (AT)
Vertical Resolution2 MHz0.8' (PS)2.0' (AT)0.8' (PS)2.0' (AT)0.8' (PS)2.0' (AT)
500 kHz1.0' (PS)3.0' (AT)1.0' (PS)3.5' (AT)1.2' (PS)3.5' (AT)
Measurement Spacing44 in.52 in.
Depth of Investigation2 MHz29" (PS)53" (AT)31" (PS)58" (AT)
500 kHz46" (PS)70" (AT)50" (PS)73" (AT)
Vertical Resolution2 MHz0.8' (PS)2.0' (AT)0.8' (PS)2.0' (AT)
500 kHz1.2' (PS)3.5' (AT)1.2' (PS)3.5' (AT)
Directional Resistivity Measurement Specifications
DescriptionSpecifications
Range and Azimuthal Coverage2 MHZ, 500 KHz, 125 kHz @ 360°
Boundary Detection Range20 feet in 10:1 formation contrast
Measurement Spacing48 in., 56 in., 80 in., 120 in.
Gamma Measurement Specifications
DescriptionSpecifications
Range0 - 500 gAPI
Azimuth Sectors16
Vertical Resolution10 in.
Drilling Dynamics Specifications
DescriptionRangeResolution
Vibration RMS and Peak (Transverse & Axial)0-70 G0.1 G
Shock Count (Transverse & Axial)0-254 CPS1 CPS
RPM / Delta RPM254 / 300 pk-pk1/1 pk-pk

MaxFusion is a new-generation telemetry tool with a high data transfer rate to the surface (MWD).

Benefits:

  • Data transfer rate up to 10 bit/s and up to 50 bit/s with data compression
  • Power supply 200 W for logging tools (LWD) in BHA
  • Built-in data recording mode module
  • Zenith and azimuth angle measurement in dynamics (continuous)
  • Measurement of natural gamma radiation of rocks
  • Annular pressure measurement (optional)
 MaxFusion 475 (120 mm) Specifications
DescriptionSpecifications
ModelMaxFusion 475 (120 mm)
Drill Collar Nominal OD4.75 in. (API)
Max. Diameter5.2 in.
Thread connectionsNC38 (box / pin)
Tool Length32 ft
Tool Weight1500 lbm
Hole Size Range5 ¾ in. to 6 ½ in.
Flow Range175 – 350 gal US/min
Dog Leg Severity15˚/100 ft Rotating 30˚/100 ft Sliding
Signal TransmissionHigh Speed Siren at 2.5, 5, and 10 BPS Physical
Max. Sand Content< 1% recommended, 3% by volume max
LCM Tolerance50 lb/bbl Medium Nut plug
Max. Operating Temperature175˚C (347˚F)
Max. Pressure25,000 psi
Power SupplyIntegral Turbine (36V Output, 400-Watt Total)
Downhole Memory> 400 hours recording time
MWD to LWD CommunicationQ-Bus Uphole and Downhole
BHA PositioningFully Modular
Directional Specifications
DescriptionRange (˚)Accuracy (˚)
InclinationRange 0 to 180˚+/- 0.1°
Azimuth0 to 360˚+/- 0.75 (above 5˚ inc.) +/- 1.0 (at 3 ˚ Inc.)
Gamma Measurement Specifications
DescriptionSpecifications
Range0 - 500 gAPI
Accuracy5%
Vertical Resolution10 in.
Drilling Dynamics Specifications
DescriptionRangeResolution or Accuracy (%)
Vibration RMS and Peak (Transverse & Axial)0-70 G0.1 G
Shock Count (Transverse & Axial)0-254 CPS1 CPS
RPM / Delta RPM254 / 300 pk-pk1/ 1 pk-pk
Optional APWD (additional sub)
DescriptionRangeResolution or Accuracy (%)
APWD (Annular Pressure While Drilling)25,000 psi+/- 0.1%