RISERLESS ABANDONMENT OPERATION USING SEALANT AND CEMENT

A method for abandonment of a subsea well includes: setting a packer (37) of a lower cementing tool (35) against a bore of an inner casing hung from a subsea wellhead; fastening a pressure control assembly to the subsea wellhead; hanging an upper cementing tool from the pressure control assembly and stabbing the upper cementing tool into a polished bore receptacle (36) of the lower cementing tool; perforating a wall of the inner casing below the packer; perforating the inner casing wall above the packer by operating a perforator of the upper cementing tool; mixing a resin and a hardener to form a sealant; and pumping a fluid train through bores of the cementing tools and into an inner annulus formed between the inner casing and an outer casing hung from the subsea wellhead. The fluid train includes the sealant followed by a cement slurry.