Abstract: A self-contained mobile repair unit for repairing wells includes the hydraulic and pneumatic tooling required to do a variety of jobs including the installation and removal of an inner pipe string, sucker rods and a pump. The repair unit, hydraulic tooling and pneumatic tooling share a common engine and a common process monitor. Access to data gathered by the monitor is restricted at the job site itself. Instead, the data is transmitted to a remote home base for the purpose of monitoring operations form a central location.

Abstract: A self-contained mobile repair unit for repairing wells includes the hydraulic and pneumatic tooling required to do a variety of jobs including the installation and removal of an inner pipe string, sucker rods and a pump. The repair unit, hydraulic tooling and pneumatic tooling share a common engine and a common process monitor. Access to data gathered by the monitor is restricted at the job site itself. Instead, the data is transmitted to a remote home base for the purpose of monitoring operations form a central location.

Abstract: A self-contained mobile repair unit for repairing wells includes the hydraulic and pneumatic tooling required to do a variety of jobs including the installation and removal of an inner pipe string, sucker rods and a pump. The repair unit, hydraulic tooling and pneumatic tooling share a common engine and a common process monitor. Access to data gathered by the monitor is restricted at the job site itself. Instead, the data is transmitted to a remote home base for the purpose of monitoring operations form a central location.

Abstract: A method for sensing the location of a casing collar within a wellbore and for orientating a tool circumferentially and radially employs the use of a compact dual-purpose magnet. The method includes offsetting the position of the magnet relative to the tool's centerline to carry out the magnet's purpose of orientating the tool. An inductive pickup coil is placed within the magnet's magnetic field to carry out the magnet's second purpose of sensing the location of a casing collar. The method is used in logging the location of casing collars, splitting casing collars, and perforating casings.

Abstract: A charge assembly for use in a cutter for splitting couplings used in joining together lengths of buried pipe is provided that allows several explosive charge segments to be used instead of a single explosive charge. The smaller explosive charge segments utilize less explosive material which complies with applicable shipping regulations. The charge assembly has an elongate charge housing with an open interior. At least two linear charge segments are longitudinally aligned in an abutting relationship with the other within the housing interior. The linear charge segments may be formed from an explosive core encased within a metal sheath. A pair of longitudinally spaced charge abutment members may be mounted within the housing interior, with the abutment members engaging the aligned charge segments at opposite ends. One of the abutment members includes a housing end closure.

Abstract: A directional collar locator sensor distinguishes between an outer casing collar from an inner pipe coupling deep within a wellbore by selectively positioning a semi-spherical magnetic shield about a magnetic sensor. The collar locator has virtually no moving parts and facilitates conventional logging, perforating multiple completion wellbores, and splitting of casing collars and inner pipe couplings. When used in perforating a well casing, the directional sensor ensures that the perforating gun is pointed in the right direction to produce complete perforations as opposed to just producing dents.

Abstract: A method of removing a pipe string anchored in cement within a wellbore involves the use of a coupling cutter having a linear charge that is magnetically oriented radially and rotationally within the pipe. The coupling cutter also has a coupling sensor that identifies the location of a coupling electronically. One first determines the free length of pipe that is above the cement. The coupling sensor then finds the lowest coupling that is just above the cement level so that the linear charge can be axially aligned to that coupling. A magnet on the cutter properly orients the linear charge both radially and rotationally relative to the inner wall of the pipe. The charge is detonated to longitudinally split the coupling. The pipe string is then disassembled and pulled from the wellbore.