A polymer geo-injection apparatus for protecting an underground structure is provided. The apparatus includes: a mechanized vehicle for moving on the ground in order to transport the apparatus while the apparatus forms a subsurface polymer layer that protects the underground structure; a polymer supply tank coupled to the mechanized vehicle and configured to supply solid polymer during the forming of the polymer layer; a polymer melting unit coupled to the mechanized vehicle and configured to receive and melt the supplied solid polymer and to supply the molten polymer during the forming of the polymer layer; and a subsurface ripper coupled to the mechanized vehicle and configured to move through the ground in response to the movement of the mechanized vehicle while receiving and injecting the supplied molten polymer into the ground above the underground structure in order to form the polymer layer and protect the underground structure.

In accordance with one or more embodiments of the present disclosure, a process for preventing corrosion of a metallic surface of a pipeline includes contacting the metallic surface with a corrosion inhibitor. The corrosion inhibitor comprises a polymer of formula R—O—(POL)—Z. R is a straight or branched alkyl or aryl; POL is a polyglycerol based polymer; Z is a non-ionic amine, a cyclic amine having 5 to 8 atoms, a diamine, a triamine, a tetra-amine, a polymeric amine, a thiol, a disulfide, or —NH—R.sub.1—SH; and R.sub.1 is a hydrocarbyl. The corrosion inhibitor is also disclosed.

A pipe, the inner surface of which is lined with a thermoplastic layer, is produced by a process comprising the following steps: a) a metal pipe is provided, b) a tubular inliner composed of a thermoplastic material is provided, c) a tape is cohesively helically bonded to the inliner, wherein the region of the contact surface of the tape consists of a moulding composition or an adhesive which adhere firmly to the surface of the inliner, and wherein the region of the opposing surface of the tape consists of a moulding composition or an adhesive which adhere firmly to the metal of the pipe, wherein the tape contains unidirectional reinforcing fibers; d) the cross section of the inliner is optionally reduced by exposure to an external force, e) the inliner is inserted into the metal pipe, f) by means of contact pressure and optionally heat, the inliner and metal pipe are firmly bonded to each other. Relative movements between the metal pipe and inliner are thereby prevented; the inliner also has high safety against collapse. The pipe is used to produce a routed pipeline.

The invention relates to a glass-reinforced plastic pipe liner of improved impact performance comprising layer B) from unsaturated polyester resin, optionally mixed with vinyl ester resin reinforced by non-woven fibres. Layer B) comprises colour pigments at 0.2-5.0 wt %. The invention provides flexible liners for pressure and non-pressure GRP pipes. It improves impact performance of the pipe liner whilst offering also improvements in abrasion resistance, water-jet resistance for high pressure cleaning without liner damage, increased expected lifetime by improved resistance to internal pressure and permits pigmentation of the liner. The invention also encloses a process for producing the glass-reinforced plastic pipe liner.

A coated pipe to transmit produced fluids in a system configured to recover hydrocarbons from a subterranean formation may include a pipe component configured to transmit the produced fluids and having an internal surface defining an inner diameter of the pipe component; and a coating deposited on the internal surface of the pipe component and configured to extend the life of the pipe component by mitigating erosion caused by the produced fluids during transmission thereof.

A prefabricated composite concrete element for use in a corrosive sewer environment. The concrete element has a hollow reinforced cast concrete portion with at least one end having connection details, a premolded corrosion resistant inner plastic liner. The plastic liner lines an interior of the hollow concrete element and the connection details to provide abutting liner faces in an assembled joint to limit exposure through said joint of said concrete portion to corrosive materials arising in said sewer environment. At least two prefabricated composite concrete elements may be assembled end to end at a joint to form a concrete sewer system. Also disclosed are a method of prefabricating such a composite concrete element.

A coating material is provided. The coating material includes a thermoset polymer having at least one functionalized carbon-based filler. The carbon-based filler can be at least one of a carbon nanotube filler, a graphene nano-platelet filler, and a graphene oxide filler. The coating material can be used to coat the surface of elements, such as the inner surfaces of fluid transportation conduits, to protect the elements from erosion, abrasion, and corrosion. This solution can be particularly useful for the transportation of slurries and, more particularly, oil sands.

Methods, products, and systems for monitoring and improving pipeline infrastructure are disclosed. At least one embodiment of the invention comprises a smart-sensing coating, which is applied to one or more interior surfaces of a pipe or pipeline. The coating may comprise a dual-purpose metamaterial, which itself may comprise a plurality of acoustically active and tunable particles that may be embedded in a low-friction, corrosion-resistant, omniphobic polymer matrix. The particles may comprise a multi-layered assembly with a high-density material core, elastic matrix filler, and a stiff outer shell. The particles may further be specifically engineered to form an acoustic band gap at a chosen ultrasound frequency. At this chosen frequency, the particles are very nearly acoustically opaque, preventing the transmission of any and all sound. As such, the position and distribution of the particles inside the pipelines can be clearly distinguished. Additionally, one or more embodiments of the present invention may be referred to as an Intelligent Pipeline System (IPS), which is a monitoring and reporting system for pipelines that uses a remote craft to monitor the interior condition of a pipeline. Preferentially, the IPS uses the smart-sensing coating that is applied to the interior wall of the pipeline to be tested or monitored. Installed acoustic sensors along the pipeline may query the coating and transmit pipeline conditions to the exterior environment where the information can be received by remote craft.

A pipe coupler is capable of preventing a fluid flowing along pipes from coming into direct contact with the pipes made of metal materials, a body, and tie rings, thereby preventing corrosion of the pipes. The pipe coupler is also capable of preventing pipes, even if the pipes made of different kinds of materials are connected, from being indirectly connected to each other by way of a fluid flowing along the inside of the pipes, thereby preventing electric corrosion of the pipes caused by the micro current contained in the fluid. The pipe coupler is also capable of absorbing dimensional differences between the pipes having different sizes.

The present invention is directed to a coated conduit comprising: a) a conduit having an interior and exterior surface; and b) a cured coating formed from a reaction mixture that is applied to at least one surface of the conduit. The reaction mixture comprises: i) a filler material comprising fibers ranging in length from 0.1 to 15.54 cm and having an aspect ratio of at least 5; and ii) a reactive component that demonstrates a tack-free time of less than five minutes at a temperature of 20 to 25° C. The present invention is also directed to a method of repairing or reinforcing a conduit, comprising: (a) applying a curable coating composition to at least one surface of the conduit, wherein the curable coating composition is formed from the reaction mixture described above; and (b) allowing the curable coating composition to at least partially cure by exposing the composition to ambient conditions.