Abrégé

Methods and apparatus for making lined pipelines utilize lined pipes and fittings attached to the ends of the lined pipes. Castellations are formed on the inner surfaces of the fittings. First and second ends of a fit-up sleeve are inserted into the fittings on the ends of first and second lined pipes and the first and second ends of the fit-up sleeve force portions of the liners within the pipes into engagement with the castellations on the inner surfaces of the fittings. The fittings are then attached to each other to join the first and second lined pipes together.

Classes IPC  ?

• F16L 13/02 - Raccords soudés à l'autogène sans apport de métal
• F16L 58/10 - Revêtements caractérisés par les matériaux utilisés de caoutchouc ou de matériaux plastiques
• F16L 58/18 - Protection des tuyaux ou des accessoires pour tuyaux contre la corrosion ou l'entartrage spécialement conçue pour les raccords de tuyaux

Abrégé

Methods and apparatus for making lined pipelines in which pipes are joined together. Within the joint there is a fit-up sleeve which forces liners against respective pipes and provides corresponding seals. Other seals can be provided by inserting sealing rings which force different portions of the liners against different portions of the pipes. The fit-up sleeve and sealing rings force the liners against castellations which prevent movement of the liners. The fit-up sleeve may cooperate with insertion rims on the pipes to provide very accurate spacing, or touching edges which can be desirable if automatic welding is employed. The seals provided by the fit-up sleeve also eliminate backdraughts and assist welding operations. Furthermore, the fit-up sleeve permits pigging through the pipe joint and therefore along the length of the resulting lined pipeline. It is foreseen that the need for CRA components and CRA welding can be largely if not wholly dispensed with.

Classes IPC  ?

• F16L 37/091 - Accouplements du type à action rapide dans lesquels l'assemblage entre les extrémités s'aboutant ou se chevauchant est maintenu par des organes de blocage combinés à un verrouillage automatique au moyen d'une bague pourvue de dents ou de doigts
• F16L 13/02 - Raccords soudés à l'autogène sans apport de métal
• F16L 37/15 - Raccords par insertion d'un élément entre surfaces à unir, p. ex. par un bout de fil, une goupille, une chaîne l'élément étant un coin

Abrégé

An improved pipe liner and associated methods, including a method of manufacturing the improved pipe liner and a method of lining a host pipe with such a pipe liner. The invention solves the problem of gas permeation through a polymer liner in hydrocarbon service which can result in corrosion of the host pipe and can also cause liner collapse. Corrosion occurs due to contact between corrosive species and the host pipe itself. Gases (307) can also accumulate in an annulus between or within the liner (305) and the host pipe (303) and expand during operational de-pressurisation of the pipeline, causing collapse of the liner. The improved pipe liner comprises a barrier layer (311), which prevents permeation through the liner, surrounding an inner polymer pipe (305A) and optionally covered by an outer polymer pipe (305B). The inner polymer pipe is porous which permits free movement of gas between the internal bore (302) of a lined pipe and the barrier layer, so as to prevent accumulation of gases anywhere in the lined pipe, while ensuring that gases do not permeate to, and damage, the host pipe. The liner can be inserted using Swagelining, roll-down, or any other suitable close-fit lining techniques, without compromising the effectiveness of the barrier layer.

Classes IPC  ?

• F16L 9/147 - Tubes en matériaux composites, c.-à-d. faits de matériaux non complètement couverts dans un seul des groupes précédents comportant uniquement des couches en métal et en matière plastique avec ou sans renforcement
• B29C 63/42 - Garnissage ou gainage, c.-à-d. application de couches ou de gainages préformés en matière plastiqueAppareils à cet effet par libération de contraintes internes en utilisant des couches ou des gainages tubulaires
• B29C 63/46 - Garnissage ou gainage, c.-à-d. application de couches ou de gainages préformés en matière plastiqueAppareils à cet effet par libération de contraintes internes des surfaces internes
• B29K 105/00 - Présentation, forme ou état de la matière moulée
• B29K 105/04 - Présentation, forme ou état de la matière moulée cellulaire ou poreuse
• B29L 23/00 - Objets tubulaires

Abrégé

Methods and apparatus for making lined pipelines in which pipes are joined together by attaching fittings at their ends and joining the fittings together. Within the joint there is a fit-up sleeve which forces liners against respective fittings and provides corresponding seals. Other seals can be provided by inserting sealing rings which force different portions of the liners against different portions of the fittings. The fit-up sleeve and sealing rings may force the liners against castellations which prevent movement of the liners. The fit-up sleeve may cooperate with insertion rims on the fittings to provide very accurate spacing, or touching edges which can be desirable if automatic welding is employed. The seals provided by the fit-up sleeve also eliminate backdraughts and assist welding operations. Furthermore, the fit-up sleeve permits pigging through the pipe joint and therefore along the length of the resulting lined pipeline. It is foreseen that the need for CRA components and CRA welding can be largely if not wholly dispensed with.

Classes IPC  ?

• F16L 13/02 - Raccords soudés à l'autogène sans apport de métal
• F16L 58/10 - Revêtements caractérisés par les matériaux utilisés de caoutchouc ou de matériaux plastiques
• F16L 58/18 - Protection des tuyaux ou des accessoires pour tuyaux contre la corrosion ou l'entartrage spécialement conçue pour les raccords de tuyaux

Abrégé

Methods and apparatus for making lined pipelines in which pipes are joined together by attaching fittings at their ends and joining the fittings together. Within the joint there is a fit-up sleeve which forces liners against respective fittings and provides corresponding seals. Other seals can be provided by inserting sealing rings which force different portions of the liners against different portions of the fittings. The fit-up sleeve and sealing rings may force the liners against castellations which prevent movement of the liners. The fit-up sleeve may cooperate with insertion rims on the fittings to provide very accurate spacing, or touching edges which are desirable with automatic welding. The seals also eliminate backdraughts and assist welding operations. The fit-up sleeve permits pigging through the pipe joint and therefore along the length of the resulting lined pipeline. The need for CRA components and CRA welding can be largely or wholly dispensed with.

Classes IPC  ?

• F16L 13/02 - Raccords soudés à l'autogène sans apport de métal
• F16L 58/10 - Revêtements caractérisés par les matériaux utilisés de caoutchouc ou de matériaux plastiques
• F16L 58/18 - Protection des tuyaux ou des accessoires pour tuyaux contre la corrosion ou l'entartrage spécialement conçue pour les raccords de tuyaux

Abrégé

A pipe liner and associated methods, including a method of manufacturing the liner and a method of lining a host pipe. The invention solves the problem of gas permeation through a polymer liner in hydrocarbon service which can result in corrosion of the host pipe and cause liner collapse. Corrosion occurs due to contact between corrosive species and the host pipe. Gases can accumulate in an annulus between or within the liner and the host pipe and expand during operational de-pressurisation of the pipeline, causing collapse of the liner. The pipe liner comprises a barrier layer surrounding an inner polymer pipe and optionally covered by an outer polymer pipe. The inner polymer pipe is porous to prevent accumulation of gases anywhere in the lined pipe, while ensuring that gases do not permeate to, and damage, the host pipe. The liner can be inserted using suitable close-fit lining techniques.

Classes IPC  ?

• B29C 55/30 - Étirage à travers une matrice
• B29C 63/34 - Garnissage ou gainage de surfaces internes avec des couches ou des gainages tubulaires
• B32B 1/08 - Produits tubulaires
• F16L 9/147 - Tubes en matériaux composites, c.-à-d. faits de matériaux non complètement couverts dans un seul des groupes précédents comportant uniquement des couches en métal et en matière plastique avec ou sans renforcement
• F16L 11/04 - Manches, c.-à-d. tuyaux flexibles en caoutchouc ou en matériaux plastiques flexibles
• F16L 55/165 - Dispositifs pour aveugler les fuites dans les tuyaux ou manches à partir de l'intérieur du tuyau par introduction d'un tuyau dans la section endommagée
• F16L 58/10 - Revêtements caractérisés par les matériaux utilisés de caoutchouc ou de matériaux plastiques