A method and apparatus for constructing a tubular assembly 40 comprising an inner portion (24) and a further portion (23) surrounding the inner portion. The inner portion (24) comprises reinforcement (37) and the further portion (23) being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus comprises an assembly station (220) comprising a wall (253). The apparatus comprises means for advancing the inner portion (21) along a first path (231) extending passed the wall (253), and means for advancing the strip (50) along a second path (232) and causing the strip to encircle the wall (253) and thereby wrap about and surround the inner portion (21). The apparatus further comprises means (321) for introducing resinous binder into the reinforcement (37) as the strip (50) is being wrapped about the inner portion (21).

A method and apparatus for constructing a tubular assembly 40 comprising an inner portion (24) and a further portion (23) surrounding the inner portion. The inner portion (24) comprises reinforcement (37) and the further portion (23) being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus comprises an assembly station (220) comprising a wall (253). The apparatus comprises means for advancing the inner portion (21) along a first path (231) extending passed the wall (253), and means for advancing the strip (50) along a second path (232) and causing the strip to encircle the wall (253) and thereby wrap about and surround the inner portion (21). The apparatus further comprises means (321) for introducing resinous binder into the reinforcement (37) as the strip (50) is being wrapped about the inner portion (21).

Methods, systems, and computer program products are provided for rapid deployment and retrieval of a frac water transfer system.

A system is provided that increases the deformability of buried pipelines to accommodate combinations of vertical, lateral and longitudinal displacements and subsequent curvatures caused by ground movements. Installation of this system prevents concentration of deformations which may cause catastrophic failures such as buckling, yielding, rupture, and weld failures. The assembly includes an element provided adjacent a pipeline and collapsible in two orthogonal directions; one, the longitudinal direction of the pipe, and two, a direction of expected lateral movement of the pipe. The collapsible element is configured to resist soil pressure in a direction orthogonal to the first two directions, and further provided is a supporting backing element adjacent an end of the collapsible element opposed to the pipeline, to prevent exposure of the collapsible element to soil pressure in one of the two orthogonal collapsible directions. The size and configuration of the installation depends on the soil and pipe properties, and type/magnitude of expected displacements.

A support assembly for constructing and staging a pipeline for installation in a trench. The support assembly includes one or more stacks of support segments. A support segment for the support assembly. Method of using and making the support segments.

A support assembly and methods relating thereto is disclosed for supporting a pipeline at a height above the ground. In an embodiment, the support assembly has a central axis and includes a vertical pile assembly configured to be coupled to the ground. In addition, the support assembly includes an upper support member coupled to the vertical pile assembly. The upper support member includes a support surface that is configured to support one or more pipelines. The vertical pile assembly is configured to transition between a retracted position, wherein the support surface is disposed at a height H1 measured axially from the ground, and an extended position, wherein the support surface is disposed at a height H2 measured axially from the ground that is greater than the height H1.

A pipe loosening device and methods are shown. In one example, the pipe loosening device enables a method wherein a pipe to be replaced is deformed but not burst, and a portion of a sidewall of the pipe is forced outward into the surrounding soil to compact a local region of the surrounding soil and loosen the existing pipe. The pipe may then pulled from the ground along an axis of the pipe.

A pipe loosening device and methods are shown. In one example, the pipe loosening device enables a method wherein a pipe to be replaced is deformed but not burst, and a portion of a sidewall of the pipe is forced outward into the surrounding soil to compact a local region of the surrounding soil and loosen the existing pipe. The pipe may then pulled from the ground along an axis of the pipe.

A pipe retrieval machine includes a frame defining a decoupling region and a travel axis and a transporting mechanism supported on the frame. The transporting mechanism has a first gripping structure adjacent an infeed end of the machine and a second gripping structure adjacent an outfeed end of the machine. The decoupling region is between the first and second gripping structures. The machine has a drive system to move the first and second gripping structures at a steady state speed to direct a pipe along the travel axis. The pipe retrieval machine includes one or more safety features to stop the drive system either automatically or through manual action, one or more safety features to inhibit or prevent damage to components of the decoupling region in the event of a malfunction, or both. Methods of operating a pipe retrieval machine include any of the operation procedures, method steps, safety features, and/or functions as described and in any combination.

A pipe support has an outer tubular support wall, an inner tubular support wall, spaced inwardly from the outer tubular support wall, and a connecting portion for maintaining the outer tubular support wall and the inner tubular support wall in a fixed, spaced apart relationship. The pipe support is intended for use in-trench and out-of-trench for supporting a pipeline during assembly, installation, testing and operation.