A method and apparatus for tapping into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle. The assembly includes a tapping tool connectable to the tubular via a saddle connection and an adjustable tapping clamp with adjustable support/locking feet, compression plate with view ports, and angularly adjustable hot tapping system, along with a drill/saw system.

In embodiments, a hot tap clamping system comprises a clamp which fits over and secures against a pipe, an actuator interface, an actuator operatively in communication with clamp, and a hot tap assembly. In a further embodiment, a system for sealing a flowline with a metal seal after hot tapping comprises a sealer, a hot tap drill/plug running tool, and a metal seal plug which is typically configured for use in sealing a flowline, e.g. a pipe, with a metal seal after hot tapping where the metal plug seal is inserted into the pipe and engages with and seals as a hot tap.

A method and apparatus for tapping into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle. The assembly includes a tapping tool connectable to the tubular via a saddle connection and an adjustable tapping clamp with adjustable support/locking feet, compression plate with view ports, and angularly adjustable hot tapping system, along with a drill/saw system.

The present embodiments provide systems and methods for valve insertion and linestopping. In one embodiment, the system comprises a sealing housing having a lower housing portion and an upper housing portion that are each dimensioned to partially surround an exterior surface of an existing pipe in an airtight state. In one embodiment, an integral valve assembly is disposed at least partially within an integral valve housing section of the upper housing portion. The integral valve assembly comprises a valve movable between an open position in which the valve provides an open pathway through an opening in the upper housing portion, and a closed position in which the valve provides a seal adjacent to the opening. The upper housing portion may be adapted to selectively receive each of an adapter plate for a cutting machine, a valve bonnet, and a blind flange. Optionally, the valve bonnet and the gate may be removed from engagement with the upper housing portion when the valve of the integral valve assembly is in the closed position, and a blind flange may be secured to the upper housing portion after the valve bonnet and the gate are removed. Therefore, the user advantageously has an option of whether to leave the valve bonnet and the gate coupled to the sealing housing for certain applications, or may remove the valve bonnet and the gate for other applications.

A method and apparatus for angularly drilling during a tapping procedure into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle.

A method of installing an Emergency Flow Restrictor Device (EFRD) on a pipeline without stopping the flow of fluid through the pipeline includes the steps of: assembling first and second face plates on a pipeline such that the first and second sealing face are in face to face, spaced relation; assembling a cutting device between the first face plate and the second face plate; assembling a valve body that has an access opening on a length of pipeline such that the valve body encloses the first and second face plates and the cutting device; installing an access valve on the access opening; operating the cutting device to sever the pipeline between the first and second sealing faces; retracting the cutting device and severed section of pipeline; and attaching a valve gate member of the EFRD to the access opening.