METHOD OF CREATING AN UNDERWATER CUTTING ZONE, AND

专利名称：METHOD OF CREATING AN UNDERWATER

CUTTING ZONE, AND RELATED PLUGGINGDEVICES AND METHODS

发明人：EDWARDS, Jonathon,BURNS,

Alexender,WHITE, David,TENNANT, Stuart

申请号：EP09726842.9申请日：20090330公开号：EP2288471B1公开日：20120704

摘要：A string of concentric casings (111) to (114) are located in the seabed (102). Anabrasive cutting medium 103 is ejected at high pressure from a nozzle (101) at the end ofa pipe (104) to cut through the casings (111) to (114) such that their upper parts, and anyassociated wellhead, can be removed. Air is delivered at high pressure into the innercasing (111) via pipe 122therebyto displace seawater (123) in the inner casing (111) sothat, instead of trying to cut through seawater, the abrasive water jet (103) cuts in air,which is very much more efficient. In Figure (3), socks (161) are filled with a settablematerial and inserted intheir unset state into cement ports (151). When the material sets,it prevents the general escape of compressed air. Various other plugging devices are alsodisclosed.

申请人：WELL OPS UK LTD,HELIX WELL OPS SEA PTY LTD

地址：GB,AU

国籍：GB,AU

代理机构：Stanley, David William

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