Expro's Stinger Disconnect Sub improves cement plug quality in permanent well abandonments to mitigate the need for costly and hazardous remedial efforts. The sub allows a cement plug to be placed in a sidetrack or plug and abandonment (P&A) operation without the need to retrieve the stinger assembly for improved reliability and rig time savings. The Stinger Disconnect Sub has the highest tensile – holding capacity and rotational capacity currently on the market while providing the ability to disconnect from the drill pipe and leave the stinger assembly downhole to prevent the disruption and potential contamination of the cement plug after displacement.
Heavy-duty collet release mechanism allows for extended length open hole abandonment operations
Disconnect dart releases the work string from the stinger pipe providing fluid separation and efficient pipe cleaning
Upper box connection can be crossed over to a multitude of work string connections
Lower box connection can be crossed over to a wide variety of small casing or tubing to be utilized as the sacrificial stinger pipe
Secondary release mechanism ensures the ability to release from the stinger if primary method is unsuccessful
Secondary release available in right-hand or left-hand rotation for operational flexibility