LWD Full-Wave Sonic Tool

SureLog-FWS™ – Enables “Quad Combo” LWD

APS’s Full-Wave Sonic Tool is a formation slowness measurement tool designed for wireline-equivalent logging while drilling (LWD) and measurements after drilling (MAD) services. This full-waveform sonic device adds Δt (delta T) measurements to the “Triple Combo” LWD system, providing faster-than-fluid compressional wave (Δtc) and shear wave (Δts) velocity data.

Applications

Wireline logging operations

Developing “insurance” formation evaluation logs during the drilling process

Borehole stability analysis and well completion design

Geophysicists can use Sonic sensor data to minimize uncertainty by tying time-based seismic data directly in with depth-based well log data. The rock’s mechanical properties can also be calculated using APS Sonic and iPCD density data, for use in a borehole stability analysis and in the completion design of the well.

Features & Benefits

  • High-resolution data is stored in downhole memory for retrieval and processing during trips.

  • Can be run in real-time MWD mode or standalone recorded data mode.

  • Minimize uncertainty by tying time-based seismic data directly in with depth-based well log data.

  • Full SureShot™ Control Center (SSCC™) and APSPlot™ support.

  • Compatible with 3rd-party petrophysics and geophysics packages via DLIS, LAS, ASCII and WITS.

Design

  • Available sizes: 4.75 in. (121 mm), 6.75 in. ( 172 mm) and 8.0 in. (204 mm).

  • Double-redundant (dual) 10 - 12 kHz transmitters.

  • Six receivers located 6.0, 6.5, 7.0, 7.5, 8.0 and 8.5 ft from transmitters.

  • Hatch cover for easy access via cable for tool programming and memory dump.