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It has been documented that the development of oil and gas mines in Galicia began in 1810. Since 1861 mining has been conducted in an industrial way. Drilling companny Goryzonty, continues the traditions of development, conducts drilling of oil and gas wells, major repairs and provides a full range of related services and works.

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MWD Directional System telemetry system DRILL-TEK MWD-175-G / DR

Телеметрична система Directional System DRILL-TEK MWD-175-G/DR

The telemetry system is used for geo-navigation and geophysical support while drilling.

Geo-navigation and geophysical support include the following technological data:

  • Anti-aircraft angle;
  • azimuth angle;
  • Deflector Position (TFO);
  • the natural radioactivity of the surrounding rocks;
  • well temperature.

Technical characteristics of the telemetry system:

Description Characteristic
Total Telemetry System Length 10.11m - Standard 8.8m Gamma Orienteering - Gamma Orienteer
Outer Diameter of Telemetry System Modules 47.6 mm (1.875 in)
Distance from the spatial orientation sensor to the bottom of the telemetry system 4.48 m - standard layout for orientation with a gamma module 3.17 m - standard layout for orientation without gamma module
Distance from the spatial orientation sensor to the bottom of the telemetry system 4.48 m - standard layout for orientation with a gamma module 3.17 m - standard layout for orientation without gamma module
Power Source 27V lithium-temperature batteries, 400-500 h * battery life (MWD includes two batteries, main and backup).
Signal type Hydraulic channel, positive pulses
Programming Programming modules on the surface with the possibility of changing the operating modes on the bottom.
Possibility of emergency removal 57 mm - minimum through diameter
Maximum operating temperature 175 ˚C (347 ˚F)
Maximum drilling fluid pressure 137.9 MPa (20,000 Psi)
Recommended Drilling Fluid Consumption 0.30 - 0.63 m3 / min. (5 - 10.5 l / s), Ø3 ½ ”(88.9 mm) 0.38 - 1.14 m3 / min. (6.3 - 19 l / s), Ø4 ¾ ”(120.6 mm) 0.57 - 2.27 m3 / min. (9.5 - 37.8 l / s), Ø6 ½ ”(165.1 mm) 1.5 - 4.45 m3 / min. (25 - 74.2 l / s), Ø8 ¼ ”(214 mm)
Pressure drop when pumping liquid at a density of 1000 kg / m3 0.689 MPa at 25.5 l / s (100 psi at 1.52 m3 / min)
Maximum content of clogging impurities (medium size with good mixing) 154.6 - 193.3 kg / m3 (40 - 50 ppb)
Maximum sand content in drilling mud 1%
Measurement error:
Anti-aircraft angle, deg. ± 0,1˚
Azimuthal angle, deg. ± 0.25˚
Deflection mounting angle, deg ± 0,5˚
Natural Gamma Radiation Level (AI GR) ± 7%
Temperature, C˚ ± 2.5˚C

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