An inflatable sleeve including one or more tubular portions including zones having different dimensions (e.g. thickness and/or diameter) and/or physical properties (e.g. elastic modulus) to enable control over the inflation characteristics of each zone, and a method of manufacturing same. The present invention further relates to a pipe junction sealing packer incorporating such an inflatable sleeve.

A controlled bending device in the form of an elongate member including a series of blocks configured to direct and/or control an extent of bending of the elongate member. The present invention further relates to a sealing packer for use in installing a flexible liner into a junction between a main pipe and a branch pipe, the sealing packer incorporating the bending device in a flexible lateral arm thereof to facilitate guidance of the flexible lateral arm into the branch pipe when the sealing packer is inserted (pushed or pulled) through the main pipe.

Methods and systems for treating emissions during a cured-in-place pipe (CIPP) closed molding process in which a resin-impregnated fibrous material is placed within an existing fluid conduit and cured in situ to seal an opening in the conduit. Such a method includes capturing multi-phase emissions released by a resin-impregnated fibrous material during curing thereof in a CIPP process, accumulating the multi-phase emissions, condensing at least a water portion of the multi-phase emissions, and treating vapor constituents of the multi-phase emissions.

A trenchless integrative repair method includes steps of: S1, pre-casting steel rings according to an internal diameter of a defect pipeline, and forming grouting holes in the steel rings; S2, loading the steel rings to a defect position inside the pipeline, and fitting the steel rings to an internal wall of the pipeline to form reinforcing rings; S3, selecting a number of the grouting holes according to subsidence distribution; drilling a hole in the pipeline to reach a subsidence position and inserting a grouting pipe; steadily grouting the subsidence position with a polymer grouting system, and observing a lift condition of the pipeline; removing the grouting pipe after the pipeline is lifted to a predetermined level; and S4, pulling a lining pipe into the pipeline, and fitting the lining pipe to the steel rings and pipeline walls adjacent to the steel rings; curing the lining pipe.

A method of installing a liner assembly for pipeline repair or reinforcement includes: pulling a prepared liner assembly into position in the pipeline, the liner assembly including a tubular liner wetted with a curable compound; introducing fluid into the inflatable bladder to bring the tubular liner into firm contact with an interior surface of the pipeline; flowing the fluid continuously through the bladder and discharging the fluid into the pipeline, while maintaining the liner assembly in an inflated condition; measuring a flow rate and a temperature of the fluid entering the bladder; calculating a time period sufficient for the tubular liner to cure based on: an amount of heat required for curing, based on dimensional information of the liner, and the measured flow rate and temperature of the fluid; and maintaining the liner assembly in an inflated condition for the time period sufficient for the tubular liner to cure.

Systems and methods for pipe lining systems and methods of use are described. Systems and methods may include a CIPP lateral liner that is inserted into a bladder forming a CIPP liner assembly that can be inserted into a pipe line for a pipe repair. CIPP liner assembly can include a membrane that produces superior results compared to the prior art. A backing ring may be used with these systems and methods.

The invention relates to: a device for curing resin-soaked lining sleeves with energy-rich radiation, comprising at least one radiation source for generating energy-rich radiation for curing a lining sleeve, at least one camera for capturing an image sequence of an environment of the device, and at least one input device, in particular provided separately from the device, wherein a capturing region and/or a display region of the camera is/can be adjusted by a user by means of the input device, and wherein an adjustment of the capturing region of the camera occurs via a movement of at least one part of the camera and/or occurs by means of an electronic image-processing device, which is designed and configured to adjust at least one camera parameter in accordance with an adjusted display region; and a use for a device of this type.

There is provided a running tool for running an apparatus for patching a wall of a conduit to and activating the apparatus in a location in the conduit wherein the apparatus comprises a rolled up or curled up piece of material for patching the wall, wherein the piece of material has a surface comprising an adhesive compound for fastening the piece of mate-rial securely to the wall of the conduit, and wherein the miming tool comprises a heater for providing heat for the apparatus for heating the compound and a forcing device for apply-ing a force to the piece of material for forcing or holding the piece of material against the wall of the conduit, and a running tool for a downhole apparatus for patching a wall of a conduit, wherein the apparatus comprises a plurality of pieces of material for patching the wall of the conduit. There is also provided herein methods of patching a conduit.

A liner assembly and method for lining a damaged pipe junction between a main and lateral pipe is provided. The liner assembly includes a main liner member and a lateral liner tube. A collar disposed near the juncture between the main liner member and lateral liner tube is impregnated with a liquid hydrophobic or hydrophilic material capable of curing in a flexible or rigid state with the material expanding in the presence of water. The hydrophobic or hydrophilic material can also be applied without the use of the collar. When the liner assembly is pressed against the main and lateral pipes, a portion of the hydrophilic or hydrophobic material is forced into the damaged pipe junction.

The invention utilizes temperature sensing to measure the internal temperature of an underground structure, such as a pipe, for the purpose of determining a proper cure interval and/or mix ratio of a resin system during a lining operation. A temperature sensor is placed within a pipe or other underground structure to be rehabilitated and at least one temperature measurement is taken within the structure prior to or simultaneously with the installation of a liner. Once the temperature of an internal aspect of the structure is taken, a cure schedule is utilized to determine the appropriate curing time based on test data obtained from baseline tests performed under simulated conditions in a soil cell apparatus. A computer program may be utilized such that upon entering the type of resin, the lowest recorded temperature of the structure, and the initial resin temperature, a cure schedule is supplied.