Nautilus is Baker Atlas' range of high pressure and high temperature logging instruments, designed for performance and reliability in the most extreme conditions. New exploration horizons are extending the limits of borehole depths. As these limits are extended, the pressures and temperatures encountered become more challenging.

Nautilus Hostile instrumentation is available for conditions up to 500 degrees F (260 Deg C) and up to 30,000 psi (206 MPa). The service range features the latest technologies including complete formation evaluation, formation testing and sampling, with the latest exploration technologies. In addition, borehole seismic, production logging and pipe recovery services complement the service range.

Nautilus delivers high-pressure, high-temperature reliability and performance, coupled with the measurement integrity and accuracy already delivered by our standard range of instrumentation. To find out if Nautilus HP, HT or HPHT instrumentation will meet the challenge of your next ultra hostile well, speak to a Baker Atlas representative. To qualify for the NAUTILUS signature, instruments must be rated above 400 deg F (204 deg C) and/or 20,000 psi (137.9 MPa).

When planning an HP, HT or HPHT logging operation the following factors should be considered. Hostile wells are typically characterized either by a high temperature, or a high pressure component. There is a relationship between the performance of instruments at temperature and pressure. Time in the well and time the instrument is powered is also a key factor in the capability of the instrumentation to perform in hostile conditions. Therefore conveyance methods and strategy is a key element of hostile instrument performance. Instrument specifications are normally considered for a time period of 1 hour. However the performance of the instrument will vary, dependent on the maximum pressure, temperature actually reached and the time deployed in the well (both powered and un-powered). Instruments ratings (temperature and pressure) are derived from proven design elements such as housing thickness, flasking of electronic components, pressure compensation and time powered up; in addition key components have been heat and pressure tested. Instruments have not typically been simultaneously tested to 500 Deg F and 30,000 psi. Therefore any published specifications are intended as a guide only and performance for specific well conditions must be verified with a Baker Atlas representative.

• Formation Evaluation
• Formation testing and sampling
• Borehole Seismic
• Production Logging
• Cement Evaluation