A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.

The invention relates to a pipe or duct probe (10) for insertion into a pipe (90) or into a duct. According to the invention, the pipe or duct probe (10) comprises: at least one motor (15), at least one motor shaft (18), at least one working means (30, 30, 30) connected to the motor shaft (18), a connection device (40) for connecting the motor (15) to a cable (75), and at least one centring device (50) connected to a housing (20).

The invention relates to a pipe or duct probe (10) for insertion into a pipe (90) or into a duct. According to the invention, the pipe or duct probe (10) comprises: at least one motor (15), at least one motor shaft (18), at least one working means (30, 30, 30) connected to the motor shaft (18), a connection device (40) for connecting the motor (15) to a cable (75), and at least one centring device (50) connected to a housing (20).

A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.

A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.

The object of the invention is to provide a device which can, with high efficiency, polish and clean the inner surface of a pipe, dry the wet inner surface of the pipe, and perform coating, wherein the device does not require a large pump or a large motive force, and does not require a blast hose or a suction hose. More specifically, provided is an intra-pipe turbine blast system that moves along the inside of a pipe and performs work by spraying a fluid toward the inside of the pipe, wherein: a gas injected from a fluid supply device to the upstream-side end inside the pipe imparts speed to a mixed phase fluid consisting of a liquid and solid particles which are likewise injected into the pipe; the flow speed of the mixed phase fluid is set to 3 m per second which is the critical speed at which solid particles can float without precipitating in the liquid, and as a result of such setting, there is a great effect on reducing the energy required for causing the mixed phase fluid to move; and the mixed phase fluid with such setting is injected at a high speed from a rotation nozzle of a turbine crawler which moves inside the pipe, thereby polishing the inner surface of the pipe, and following the polishing work, the turbine crawler can clean, dry and coat the inner surface of the pipe.

The object of the invention is to provide a device which can, with high efficiency, polish and clean the inner surface of a pipe, dry the wet inner surface of the pipe, and perform coating, wherein the device does not require a large pump or a large motive force, and does not require a blast hose or a suction hose. More specifically, provided is an intra-pipe turbine blast system that moves along the inside of a pipe and performs work by spraying a fluid toward the inside of the pipe, wherein: a gas injected from a fluid supply device to the upstream-side end inside the pipe imparts speed to a mixed phase fluid consisting of a liquid and solid particles which are likewise injected into the pipe; the flow speed of the mixed phase fluid is set to 3 m per second which is the critical speed at which solid particles can float without precipitating in the liquid, and as a result of such setting, there is a great effect on reducing the energy required for causing the mixed phase fluid to move; and the mixed phase fluid with such setting is injected at a high speed from a rotation nozzle of a turbine crawler which moves inside the pipe, thereby polishing the inner surface of the pipe, and following the polishing work, the turbine crawler can clean, dry and coat the inner surface of the pipe.

A tool that removes a scale inside a pipe includes: a laser tool including a laser head to output a laser beam, and a robotic arm that is articulated and that is connected to the laser head. The robotic arm includes segments that are connected by flexible robotic arm joints to enable movement of the laser head in six degrees of freedom, and a control system to control the robotic arm to direct output of the laser beam. The tool also includes a drilling shaft attached to the robotic arm of the laser tool.

A tool that removes a scale inside a pipe includes: a laser tool including a laser head to output a laser beam, and a robotic arm that is articulated and that is connected to the laser head. The robotic arm includes segments that are connected by flexible robotic arm joints to enable movement of the laser head in six degrees of freedom, and a control system to control the robotic arm to direct output of the laser beam. The tool also includes a drilling shaft attached to the robotic arm of the laser tool.

A clearing head 10 includes annular scraper edge (12) and rows of openings (14, 16). A clearing tool (100) has a one-piece combined shaft (24) and clearing head (10). Wiper ring (49) includes inner first material 49a around an opening (49c) for the shaft (24). The first material may have molybdenum/molybdenum disulphide. A resilient second material 49b is provided around the first material. The resilient second material is or includes FKM. In a ram (38), the resilient second material can exert inward radial pressure to the first material by reacting against a ram interior wall (39). The ram can incline from horizontal and vertical by an angle e.g. between at least 10 and 80, or between at least 20 and 70, or between at least 30 and 60, or between at least 25 and 45, or around 30.