A hydraulic arrangement for fail-safe and pump-through of a safety valve. The arrangement allows for compact actuation of a safety valve through accumulators. The arrangement supports automatic closure of the valve in the emergent circumstance of any loss of hydraulic control above the valve. Additionally, the arrangement also allows for a technique of re-opening the valve for long term killing of a well in direct response to the introduction of kill fluid without requiring any added complex interventional measures.

A tool can be used remove one or more outer layers of a tubular such as a flexible pipeline to enable an inspection on the remaining layers of the flexible pipeline. It allows the precise removal of outer layers of a flexible riser so that inspection can take place tubulars that otherwise could not be inspected with ultrasound.

A tool can be used remove one or more outer layers of a tubular such as a flexible pipeline to enable an inspection on the remaining layers of the flexible pipeline. It allows the precise removal of outer layers of a flexible riser so that inspection can take place tubulars that otherwise could not be inspected with ultrasound.

The present concept is a method of slot recovery for the oil industry. The method involves running an internal cutter down the production casing to cut through a preselected number of existing casings at predetermined depths before drilling around the outermost preselected casing with a hollow drill bit. The hollow drill bit drills through the preslected outermost casing cement to the predetermined depth before a removal tool attached to the inside of the production casing is used to remove the existing casings to the predetermined depth. These steps are repeated using appropriately sized hollow drill bits and casings to drill around the next preselected outermost casings to the next predetermined depth, continuously removing the existing casings until all desired existing casings are removed.

The present concept is a method of slot recovery for the oil industry. The method involves running an internal cutter down the production casing to cut through a preselected number of existing casings at predetermined depths before drilling around the outermost preselected casing with a hollow drill bit. The hollow drill bit drills through the preslected outermost casing cement to the predetermined depth before a removal tool attached to the inside of the production casing is used to remove the existing casings to the predetermined depth. These steps are repeated using appropriately sized hollow drill bits and casings to drill around the next preselected outermost casings to the next predetermined depth, continuously removing the existing casings until all desired existing casings are removed.

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.

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 various aspects, the diamond wire saw apparatus disclosed herein includes a frame formed in a U-shape from a first rail and a second rail secured to a base, the first rail and the second rail being parallel to one another and perpendicular to the base. Several pulleys are disposed about the frame, and a diamond wire is engaged with the several pulleys to be cycled about the several pulleys. Some of the several pulleys traverse portions of the frame in opposing directions to maintain a selected tension in the diamond wire as the diamond wire is advanced while being cycled to cut a workpiece releasably engaged with the frame. The first rail, the second rail, and the base are formed in sections to be sized to correspondingly size an interior region of the frame to accommodate a workpiece by selective inclusion of sections in the first rail, the second rail, and the base.

The present invention relates to a downhole plug and abandonment system (100) for a well (105), comprising a first well tubular metal structure (101a) having a wall, a second well tubular metal structure (101b) having a wall, the second well tubular metal structure being arranged inside the first well tubular metal structure, the well tubular metal structures having longitudinal extensions and being arranged in a borehole (104) of a well, a packer (350) arranged between the first well tubular metal structure and the second well tubular metal structure defining an annular space (351) above the packer, a first plug (106) arranged in the second well tubular metal structure dividing the second well tubular metal structure into a first part (107) and a second part (108), the first part being closest to a top of the well, and a cement plug (270) arranged in the first part on top of the packer and the plug. Furthermore, the present invention relates to a downhole plug and abandonment method.

The present invention relates to a downhole plug and abandonment system (100) for a well (105), comprising a first well tubular metal structure (101a) having a wall, a second well tubular metal structure (101b) having a wall, the second well tubular metal structure being arranged inside the first well tubular metal structure, the well tubular metal structures having longitudinal extensions and being arranged in a borehole (104) of a well, a packer (350) arranged between the first well tubular metal structure and the second well tubular metal structure defining an annular space (351) above the packer, a first plug (106) arranged in the second well tubular metal structure dividing the second well tubular metal structure into a first part (107) and a second part (108), the first part being closest to a top of the well, and a cement plug (270) arranged in the first part on top of the packer and the plug. Furthermore, the present invention relates to a downhole plug and abandonment method.