system and tools set the standard for downhole data acquisition. By combining the latest in electromagnetic (EM) technology with the most durable and efficient design on the market, the system provides a cost-effective solution for EM measurement-while-drilling (MWD) applications.
PGO MWD systems and tools transmit data measurements from the bottom of the hole back to the surface to allow the driller to control and monitor the location and orientation of the drill bit. Traditional mud-pulse MWD systems transmit information to the surface via pressure pulses in the field column. EM systems send information to the surface through the earth’s crust, utilizing low-frequency EM waves. Information is received at a surface antenna, decoded, processed by a computer, and distributed to the driller’s readout display without the encumbrance of mud or wire transmission.
EM systems are the preferred MWD strategy in many applications, including:
Underbalanced drilling
Underpressure formations
Vertical control drilling
Horizontal drilling
Coalbed methane (CBM)
Lost circulation
Directional drilling
Re-entry wells
Features/Benefits
Key data points:
Magnetic/gravity tool faces
Near-bit inclination
Azimuth
High-side gamma
Low-side gamma
Total gamma (directional and 360)
Annulus pressure
Vibration
Downhole revolutions per minute
A variety of fluid conditions:
Aerated mud
While-pumping lost-circulation material
Configurable to meet local field conditions
Variable data transmission speeds
Separate steering and survey frames
Compact and battery-powered
The electronic design eliminates mechanical parts
Does not require pump pressure of the flow
Data output in standard Wellsite Information Transfer Standard format
Can be used with a variety of tubular sizes
