公开(公告)号：WO2023084220A1

公开(公告)日：2023-05-19

申请号：PCT/GB2022/052850

申请日：2022-11-10

Applicant: BISN TEC LTD

Inventor： LEVCHENKO, Andre ,  CHANCELLOR, Bobby ,  NAYLOR, Matthew ,  CLARK, Billy ,  TALAPATRA, Didhiti ,  CARRAGHER, Paul ,  MOODY, Mike

IPC: E21B29/02 ,  E21B33/12 ,  E21B33/134 ,  E21B36/00 ,  E21B23/04

Abstract: The present invention relates to downhole tool assemblies (50) for use in deploying an alloy plug (61) or seal within a target region of an oil/gas well and clearing/removing well structures from said target regions. The assemblies are provided with a gas-generating chemical heating mixture (58, 59, 60). The heat generated by the chemical heating mixture is employed in heating a downhole target region, while the gas generated is harness to actuate the operation of one or more functional components (54) provided on the assembly to achieve the assembly's particular downhole operation.