A repair kit and associated method for repairing an automotive coolant pipe for fluid-conducting within an engine block of an engine includes at least a repair stent with a flared end, sealant and instructions for performing the method. The method includes draining coolant from the engine, removing the water pump from the engine without removing the timing chain cover of the engine, inserting the repair stent including a sealant through the coolant passage, wherein the coolant passage extends through the timing chain cover into the engine, re-assembling the water pump to the engine and adding coolant to the engine.

Automated flowline leak sealing can be implemented as a flowline sealing tool assembly. A sealing sleeve is configured to be positioned within a flowline with a circumferential leak. The sealing sleeve includes a pair of ends configured to be positioned on either side of the circumferential leak. A pair of sealing elements are attached to the pair of ends, respectively, and are configured to seal the pair of ends to an inner wall of the flowline on either side of the circumferential leak. A deployment tool includes a hollow cylinder configured to be inserted into and retracted from an inner volume defined by the sealing sleeve. The deployment tool is configured to activate the pair of sealing elements to seal the pair of ends to the inner wall of the flowline on either side of the circumferential leak in response to being retracted from the inner volume.

An expander, preferably for use in expanding a host pipe to be refurbished. A floating pad is disposed to be displaced relative to a chassis by at least one retractable and extendable piston such that the expander has a first expansion range between fully-retracted and fully-extended states. A floating pad jacket and a chassis jacket are disposed to be removably attached to the floating pad and chassis, such that the floating pad jacket increases the first expansion range of the expander to a second expansion range when the floating pad jacket is attached to the floating pad, and the chassis jacket increases the first expansion range of the expander to a third expansion range when the chassis jacket is attached to the chassis. At least one piston may be configured to be extended and retracted independently.

A method for enlarging a crushed section of a ductile pipe. A wire rope having a bead or plurality of beads attached to the rope is placed in a ductile pipe. When a series of beads is used, each of the beads is sequentially larger. The wire rope is pulled through the crushed section, and the ductile pipe conforms to the larger diameter of the beads. The crushed section of pipe may be expanded so that a larger wire rope suitable for pipe extraction may be passed through. Alternatively, the pipe may be reformed and expanded to near or greater than its original size. The pipe may then be coated or a smaller slip-lined pipe may be placed within the original pipe.

The invention relates to a hydraulic device for in situ hermetic sealing of holes, cracks or leaks from joints that occur in underground production tubing used for the extraction of oil, gas or other fluids. In particular, the invention relates to a device comprising an assembly including four sections comprising various securing and anchoring means, and to the method for moving the device in order to detect and locate the site of the leak and to position the device inside the fluid production tubing, such that it remains fixed in place and hermetically seals the damaged section of the production tubing, allowing normal production flow to be resumed.

A method for enlarging a crushed section of a ductile pipe. A wire rope having a bead or plurality of beads attached to the rope is placed in a ductile pipe. When a series of beads is used, each of the beads is sequentially larger. The wire rope is pulled through the crushed section, and the ductile pipe conforms to the larger diameter of the beads. The crushed section of pipe may be expanded so that a larger wire rope suitable for pipe extraction may be passed through. Alternatively, the pipe may be reformed and expanded to near or greater than its original size. The pipe may then be coated or a smaller slip-lined pipe may be placed within the original pipe.

The application provides a system comprising a water blocking device, a support structure, an injection machine, a resin impregnated lining hose and a light curing machine. The water blocking device blocks water and creates space for repairing. The support structure jacks up the deformation of pipelines. The injection machine injects polymer into the gap between the support structure and the HDPE pipes and the defective soil. A resin impregnated lining hose is inflated to attach to the support structure before being cured by UV lights. A CIPP (Cured-in-place pipe) liner is formed. The application carries out the trenchless rehabilitation of deformation of HDPE pipelines by integrating the method of the lining steel ring supporting, polymer injection and CIPP process. The defective soils are stabilized and further defects after repairing is avoided. The application is advantageous to the trenchless rehabilitation for double wall corrugated pipeline (diameter over 800 mm).

A method of restoring a tubular assembly having a plurality of coupled tubular bodies includes the steps of inserting a first tubular element and a second tubular element inside the tubular assembly, the first tubular element having a first free end facing a second free end of the second tubular element, and of pushing at least one of the first or second tubular element against the other so as to bring the first free end and the second free end into contact. Before the step of inserting, there is a step of producing a collar on at least the first free end of the first tubular element.

The application provides a system comprising a water blocking device, a support structure, an injection machine, a resin impregnated lining hose and a light curing machine. The water blocking device blocks water and creates space for repairing. The support structure jacks up the deformation of pipelines. The injection machine injects polymer into the gap between the support structure and the HDPE pipes and the defective soil. A resin impregnated lining hose is inflated to attach to the support structure before being cured by UV lights. A CIPP (Cured-in-place pipe) liner is formed. The application carries out the trenchless rehabilitation of deformation of HDPE pipelines by integrating the method of the lining steel ring supporting, polymer injection and CIPP process. The defective soils are stabilized and further defects after repairing is avoided. The application is advantageous to the trenchless rehabilitation for double wall corrugated pipeline (diameter over 800 mm).

A linking pin made of elastic plastic having linking pin halves is used to link segments in the longitudinal direction to assemble a rehabilitation pipe. The linking pin includes a tubular portion having on its outer periphery surface first and second protrusions separated by a distance of twice the thickness of the side plate of the segment and a rear protruding portion that enlarges in diameter due to elasticity. The linking pin is inserted into one segment and the other segment so that the side plates of both the segments come between the first and second protrusions. The linking pin is then enlarged in diameter due to elasticity to fit the side plates between the first and second protrusions and link both the segments in the longitudinal direction. The linking pin that is enlarged in diameter can be reduced in diameter to unlink both the segments.