With over 70% of the world’s production coming from mature fields and with the average recovery factor of oil and gas being 35% and 70% respectively, it is not surprising that operators are looking at creative ways to access bypassed reserves and lengthen the life of their declining wells. Coiled Tubing Drilling provides the technique to directionally target these untapped sweet spots within the reservoir.
Our 5" POLARIS system is the only CTD BHA available on the market capable of drilling hole sizes up to 8-1/2” and has been designed for grass-roots directional drilling applications, but can also be used for re-entry applications where larger hole sizes are required or preferred.
Larger hole sizes require higher flow rates, which are not possible through smaller tools, and many alternative drilling options are limited by their inability to operate in aerated fluids such as nitrogen mist and foam. As well as drilling simple shallow wells, POLARIS can also drill multiple wells from a single pad with integration of our solid state gyro-based directional measurement unit. However, for operations where continuous circulation is required, and therefore stopping to take gyro surveys is not possible, the POLARIS system is also available as a magnetically-steered configuration.
LARIS was used to drill the worlds first horizontal well using Gyro While Drilling (GWD) technology. On the same campaign it was also the first time GWD was used for the severe conditions of an air drilled well.
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Enables easy deployment above the master valve and sensor positions are close to the bit for more accurate navigation. This has significant safety and operational benefits.
Allows the BHA to be assembled within the BOP when operating with a live well where there is insufficient height above the master valve.
Continuous CW or CCW rotation of the orienter allows the build and straight section to be drilled in the same run. This feature also prevents sinusoidal well paths from ever being drilled which increases your WOB and consequently your lateral reach. No other BHA on the market has this feature.
The Circulation Valve can be used in the drilling BHA or to hydraulically set whipstocks and packers. The circulation valve allows circulation above the motor if open and through the motor if closed. It can be functioned multiple times during a run through an electrical command sent from surface. It ensures good hole cleaning and mitigates stuck pipe risks.
Allows real-time feedback of downhole conditions that are essential for efficient drilling with coiled tubing where small, fast changing parameters have a significant effect on drilling performance. The wireline telemetry also means that signals can be transmitted in multi-phase fluid conditions.
Pressure, temperature, WOB, TOB, vibration, gamma ray, inclination, azimuth, tool face, gyro, CCL.
Helps to exit the casing window without increasing tool length. No other BHA on the market can do this.
Determines tool position by measuring its angle relative to north. This provides simple and accurate control without the reliability and cost issues associated with more complex sensors.
The Magnetic DMU is a field proven module which offers high data rate azimuth derived from the geomagnetic field. Inclination and Toolface are delivered at the same rate. The high data density, coupled with our wireline telemetry enables novel Quality Control techniques to be used, delivering improved accuracy, even on surveys taken while drilling.
* Currently being extended
** Pass through capability. Build rate capability is dependent on motor/bit combination.
For full specifications, you can download the datasheet. If you would like to know more about our POLARIS system, or if you have a project that you think could benefit from our service, please get in touch.
