APS's WPR™ Wave Propagation Resistivity sub is a spatially compensated, dual-frequency (400 kHz and 2 MHz), dual spacing device designed for wireline-equivalent logging while drilling (LWD) and measurements after drilling (MAD) services in all well types.
APPLICATIONS
- Geosteering
- Correlation
- Pore pressure trend analysis
- Casing point selection
- Wireline replacement
- Logging while tripping
- Logging with and without the flow switch enabled (for air- and foam-drilled wells)
FEATURES & BENEFITS
- Provides real-time compensation.
- Eliminates invasion effects due to measurement delays.
- Improves accuracy by canceling variations in receiver channels.
- Operates in all mud types, including oil-based and salt-saturated.
- Provides real-time resistivity with flexible transmission formats.
- High-resolution data is stored in downhole memory which can be retrieved and processed during trips.
- APS provides a complete set of software-enabled borehole corrections and applications with WPR, including a dipping bed model for geosteering.
- Pressure While Drilling (PWD) option available for 4.75 in. (121 mm), 6.75 in. (172 mm) and 8.0 in. (204 mm) WPR.
- Low operating power for maximum battery life; designed to run with turbine alternator and 0x/1x/2x/3x battery (10 cell DD), or 3x/4x batteries.
DESIGN
- Available tool sizes: 3.5 in. (89 mm), 3.75 in. (95 mm), 4.75 in. (121 mm), 6.75 in. (172 mm) and 8.0 in. (204 mm).
- Symmetrical design with centrally located receive antennas.
- Interfaces directly with APS SureShot™ MWD.
- Hatch cover for easy access to tool programming and data dump port.
APPLICATIONS
- Geosteering
- Correlation
- Pore pressure trend analysis
- Casing point selection
- Wireline replacement
- Logging while tripping
- Logging with and without the flow switch enabled (for air- and foam-drilled wells)
FEATURES & BENEFITS
- Provides real-time compensation.
- Eliminates invasion effects due to measurement delays.
- Improves accuracy by canceling variations in receiver channels.
- Operates in all mud types, including oil-based and salt-saturated.
- Provides real-time resistivity with flexible transmission formats.
- High-resolution data is stored in downhole memory which can be retrieved and processed during trips.
- APS provides a complete set of software-enabled borehole corrections and applications with WPR, including a dipping bed model for geosteering.
- Pressure While Drilling (PWD) option available for 4.75 in. (121 mm), 6.75 in. (172 mm) and 8.0 in. (204 mm) WPR.
- Low operating power for maximum battery life; designed to run with turbine alternator and 0x/1x/2x/3x battery (10 cell DD), or 3x/4x batteries.
DESIGN
- Available tool sizes: 3.5 in. (89 mm), 3.75 in. (95 mm), 4.75 in. (121 mm), 6.75 in. (172 mm) and 8.0 in. (204 mm).
- Symmetrical design with centrally located receive antennas.
- Interfaces directly with APS SureShot™ MWD.
- Hatch cover for easy access to tool programming and data dump port.
