Existing technologies

Well plugging and abandonment - deployable technologies
Areas	Technologies
Data and planning	Multi-well campaign planning (Tullow, ConocoPhillips, Spirit Energy)
Well inspection and cement conditions	Efficient logs and surveys in the planning phase with preparation for intervention (Anasuria, Premier) Use of cement bond logging and data modelling (Marathon, Shell)
Intervention equipment	Efficient clean up tools (Total) CT deployed perforating guns and isolation tools (Tullow)
Tubing and casing section removal	Tubing agitator technology (Conoco) Optimised section milling (CNR) One trip section milling (Conoco) Abrasive water jetting for well head removal (Total, Marathon) Downhole pulling technologies (Fairfield) Hydraulic mast / heavy duty workover for P&A (CNR)
Barrier materials and placement	Anulus perf / wash / cement (Conoco, Chrysaor, Shell, Endeavour) Thru-tubing abandonment technologies, incl. perf, expanding slurries, agitators, pressure testing (Shell)

Multi well campaigns
	Multi-operator and multi-well campaigns can de-risk well abandonments, delivering cost and programme efficiencies Enabling technologies (e.g. AI, data mining) can assist the abandonment planning process ConocoPhillips and Spirit Energy realised significant savings by collaborating on a joint SNS well P&A campaign, sharing knowledge, expertise and bespoke equipment

Tubing and casing removal
	Innovations in existing cutting techniques and technologies have reduced cutting times and support one trip operations Shell, CNR, Total and Marathon have deployed enhanced cutting tools in P&A (e.g. improved section milling, abrasive water jet)

Barrier deployment
	Perf, wash and cement technology could potentially reduce the costs of plugging across multiple annuli without milling This technique is used in other basins, but it has not been deployed extensively in the UKCS It is under assessment by a number of UK operators