Epilogue - Dual-string barrier evaluation
Evaluate the A-and B-annulus without removing the inner pipe during well decommissioning operations
The well decommissioning phase can be complex and costly because of the unknown status of the barrier (often cement) in the B-annulus that may have changed during the life of the well.
Part of Epilogue* efficient P&A services, Epilogue dual-string barrier evaluation enables you to avoid costly and unnecessary steps in the well decommissioning phase. It uses the most advanced method for imaging the B-annulus—all without inner-pipe (tubing or casing) removal, significantly reducing the time required for operations.
Epilogue dual-string barrier evaluation leverages a combination of deep-array multimode sonic measurement (0.5–20 kHz) and multimodality ultrasonic measurement (100–500 kHz). These advanced measurements produce phase and amplitude attributes that yield a combined image of the A- and B- annuli conditions. Ultrasonic measurements provide crucial pipe-to-pipe standoff information and enable you to charaterize liquid conditions in the A-annulus, as well as corrosionrelated gross deformations of the tubing or outer casing. The low-frequency, deeparray sonic measurement provides the B-annulus evaluation. Together, these two measurements provide a more reliable B-annulus evaluation with radial coverage and azimuthal mapping.
Relative Business Impact
Sign up or log in to your explorer or platform subscription to get access to the reviews written about this technology.
Sign up or log in to your explorer or platform subscription to get access to the track record of this technology.