To prepare a well for plugging and abandonment (P&A), combining conventional techniques can improve efficiency and cut the hefty cost associated with permanently ending a well’s productive life.
Wellbore clean-up and abandonment specialist Coretrax has designed and created the unique CX-Double Perf and Squeeze system, a one-trip solution for annular cementing operations.
Utilizing the CX-Double Perf and Squeeze system allows for annular cement to be placed and a cement plug to be placed in a single trip.
The Aberdeen-headquartered company combined tried and tested tools to reduce costs and improve the reliability of well abandonment preparation.
Whilst running in hole, the disposable CX-Superflow scrapes, brushes and jets the casing ID to remove debris build-up, such as cement and other foreign debris. With patented features, the combined scraper and brush tool can be run in conjunction with bridge plugs and cement retainers. Once the annulus is cleaned, cement is pumped through the CX-SV, allowing a conventional cement squeeze to be carried out through the bottom perforations .
Whilst the CX-Double Perf and Squeeze system does not generate high volumes of swarf like section milling operations, the perforation burrs need to be captured at surface. Placed in the flowlines, the high strength CX-SRM is used to collect up to 30kg of metallic debris and prevent debris from returning downhole. It has a high surface area and is designed to be easily cleaned, minimizing exposure of swarf to the rig crew.
The CX-SRM (swarf recovery magnet) is a high strength magnetic system used to recover swarf and metal debris from the drilling mud.
The CX-Double Perf and Squeeze systems effectively address the challenges associated with the placement of annular cement in an abandonment environment. As the industry continues to drive for efficiencies, this technology saves operators valuable rig time while creating a turn-key solution for this vital aspect of the decommissioning process.