BOP Motion Sensor Calibration Game-Changer
Traditionally, the industry has relied on a standard approach to taring BOP motion sensors, typically conducting the taring sequence just before the BOP lands on the wellhead under the assumption that the BOP is perfectly vertical at this point. However, recent observations have unveiled significant inaccuracies resulting from this method. Factors such as sea currents and uneven mass distribution profoundly impact the alignment of the BOP just before it touches down on the wellhead. Data collected from over 400 wells underscores the extent of this static inaccuracy, which can reach as high as 0.5 degrees.
In response to these challenges, 4Subsea has developed a reliable, precise, and effective approach to sensor taring, for safe and efficient operations. Our innovative method ensures a static accuracy level surpassing 0.05 degrees, a substantial improvement over the traditional practice. 4Subsea now uses high-precision sensors to align our motion, ensuring high-precision absolute angles as a result. Increased accuracy and reliability of the BOP, LFJ and riser adapter absolute angle enables a wide range of functionalities. Here are a few:
- Lower Flex Joint (LFJ) Relative Angle
- Rig Position Optimization
- Wellhead Inclination Angle
- Digital Bullseye
- Key Seating Monitoring
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