Abstract: An apparatus for controlling well fires which has a controllable extension pipe, a clamping base and a sealing assembly. The sealing assembly includes a moveable sealing sleeve located between an outer and an inner nesting pipe and plastically deformable sealing material located at one end of the nesting pipes. The sealing assembly is attached to a clamping base. The clamping base can be of two different constructions, a top mount base which, along with the attached sealing assembly, is lowered over the well pipe and a side mount base which clamps from the side with the assembly rotated away from the well pipe. All apparatus controls and method steps can be remotely accomplished.The top mount base is clamped to the pipe after lowering the apparatus over the well pipe to the point where the well pipe passes through the clamping base and into the interior of the inner nesting pipe.