HOUSTON-- APS Technology has unveiled WPR: a compensated geometry, dual frequency (400 kHz & 2 MHz), dual spacing formation evaluation tool designed for logging-while-drilling (LWD) and measurements-after-drilling (MAD) services in all well types.
WPR operates in all mud types including oil-base and salt-saturated and provides real-time resistivity with flexible transmission formats. High-resolution data is stored in downhole memory, which can be retrieved and processed during trips. Downhole storage in the WPR is 32 MB, with an additional 32 MB in the MWD tool. Memory fill-rate of downhole WPR + Gamma data is 8 MB or less in 120 hours, which can be downloaded in about 10 minutes during a trip.
Applications include geosteering, correlation, pore pressure trend analysis, casing point selection, wireline replacement, logging while tripping, and logging with and without the flow switch enabled (for air and foam-drilled wells). Remote access capabilities include diagnostics, real-time and post-survey transfer of data via WISML, and remote geosteering. APS provides a complete set of software-enabled borehole corrections and applications with WPR, including geosteering and formation analysis.
WPR interfaces with APS's SureShot Directional plus Gamma (DG) MWD system, and uses industry-standard antenna spacings and dielectric corrections. The tool also offers industry-standard depths of investigation and vertical resolution. The complete SureShot plus WPR system operates to 175° C, and is powered by batteries or batteries plus turbine alternator. WPR is available in 3.5-in. (89 mm), 4.75-in. (121 mm), 6.75-in. (171 mm), and 8.0-in. (203 mm) nominal diameters.