A pipe has first and second exterior layers of insulation. The first layer of insulation has a higher temperature rating than the second. The second layer can be thicker than the first. In a system and method for forming the insulated pipe, a first mold having a first inner diameter is used for the first layer of insulation and a second mold having a second inner diameter greater than the first inner diameter is used for the second layer of insulation. The first layer of insulation is formed from a first polymer and the second is formed over the first layer from a second polymer. Multiple insulated pipes can be joined together at field joints and field joint insulation can be formed from first and second layers of field joint insulation corresponding in material and thickness to the first and second layers of pipe insulation.
F16L 59/02 - Forme ou configuration de matériaux isolants, avec ou sans revêtement formant un tout avec les matériaux isolants
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B29C 45/16 - Fabrication d'objets multicouches ou polychromes
A strain testing rig for an elongate specimen has a first grip for the first end portion of the specimen, a second grip for the second end portion of the specimen, and a drive mechanism for moving the first grip away from the second grip to stretch the specimen lengthwise. The first grip and the second grip are configured to maintain a grip on the specimen as the cross section of the specimen decreases during stretching. Each of the first grip and the second grip can include a tapered dog, a press for compressing the respective end portion of the specimen, and a clamp for clamping the respective end portion of the specimen in a direction perpendicular to the action of the clamp. A method of testing strain characteristics can involve using digital image correlation to separately measure strain on each of the at least three independent strain zones.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01N 3/10 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression engendrés par pression pneumatique ou hydraulique
G01N 3/20 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de flexion
3.
FIELD JOINT MOLD ASSEMBLY AND METHOD OF INSULATING A FIELD JOINT
A field joint mold assembly has a mold body for defining a mold cavity around the field joint section of a pipe. An injection port opens through the mold body such that curable insulation material can be imparted through the injection port into the mold cavity. A heating system is mounted on the mold body for uniformly heating the mold body to an elevated temperature to promote even elevated temperature distribution inside the mold cavity. To insulate a field joint, curable insulation material is injected into the mold cavity and cured. While injecting and/or curing, heat is conducted from a heating system to majority of a surface area of the mold body to uniformly heat the mold cavity to an elevated temperature.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B29C 45/73 - Chauffage ou refroidissement du moule
B29C 45/78 - Mesure, commande ou régulation de la température
A strain testing rig for an elongate specimen has a first grip for the first end portion of the specimen, a second grip for the second end portion of the specimen, and a drive mechanism for moving the first grip away from the second grip to stretch the specimen lengthwise. The first grip and the second grip are configured to maintain a grip on the specimen as the cross section of the specimen decreases during stretching. Each of the first grip and the second grip can include a tapered dog, a press for compressing the respective end portion of the specimen, and a clamp for clamping the respective end portion of the specimen in a direction perpendicular to the action of the clamp. A method of testing strain characteristics can involve using digital image correlation to separately measure strain on each of the at least three independent strain zones.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01N 3/10 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression engendrés par pression pneumatique ou hydraulique
G01N 3/20 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de flexion
5.
Adjustable molding system for forming material on pipe
A molding system for applying insulation to a pipe employs an elongate mold in which to receive the pipe. A mold adjustment mechanism can adjust a shape of the mold to correspond to a shape of the pipe as the pipe sags in the mold cavity. In a method of insulating the pipe, the shape of the mold is adjusted to correspond to the shape of the sagging pipe and curable material is imparted into the mold while maintaining the adjusted shape of the mold. The elongate mold can include at least one double-walled mold member with an inner form wall, an outer jacket, and a plurality of radial supports that support the outer jacket on the inner form wall in radially spaced apart relation therewith.
A strain testing rig for testing an elongate specimen has at least three restraints arranged to be spaced apart along the elongate specimen. Each restraint engages the elongate specimen at a respective contact location such that the strain testing rig defines an independent strain zone between each pair of adjacent contact locations. A drive mechanism moves the at least three restraints to stretch each independent strain zone such that the length of each independent strain zone increases independent of strain in the other zones. The restraints can be pivotably connected end-to-end as a chain linkage. The drive mechanism drives the chain linkage from a first position in which a forward facing side of the chain linkage which opposes the specimen is substantially straight to a second position in which the forward facing side of the chain linkage is convexly curved.
G01N 3/20 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de flexion
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
A pipe has first and second exterior layers of insulation. The first layer of insulation has a higher temperature rating than the second. The second layer can be thicker than the first. In a system and method for forming the insulated pipe, a first mold having a first inner diameter is used for the first layer of insulation and a second mold having a second inner diameter greater than the first inner diameter is used for the second layer of insulation. The first layer of insulation is formed from a first polymer and the second is formed over the first layer from a second polymer. Multiple insulated pipes can be joined together at field joints and field joint insulation can be formed from first and second layers of field joint insulation corresponding in material and thickness to the first and second layers of pipe insulation.
F16L 59/02 - Forme ou configuration de matériaux isolants, avec ou sans revêtement formant un tout avec les matériaux isolants
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B29C 45/16 - Fabrication d'objets multicouches ou polychromes
A portable molding system is configured for forming insulation on pipes. A set of transportable process modules are configured to be shipped to a molding site, operatively connected together at the molding site to form a site-installed molding system, and subsequently disconnected for transport to another site. The set of transportable process modules includes one or more resin preparation modules configured to prepare resin for being formed into insulation on the pipes. One or more mold modules are configured to define a mold cavity. The one or more mold modules are configured to hold a pipe in the mold cavity, to receive resin prepared by the one or more resin preparation modules in the mold cavity around the pipe, and to form said resin received in the mold cavity into insulation on the pipe.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B29C 33/02 - Moules ou noyauxLeurs détails ou accessoires comportant des moyens incorporés de chauffage ou de refroidissement
B29C 33/26 - Ouverture, fermeture ou serrage par pivotement
B29C 33/28 - Ouverture, fermeture ou serrage par pivotement utilisant des moyens hydrauliques ou pneumatiques
protective coatings for pipes, piping connections, line pipe, field joints, valves and subsea production structures in the offshore and onshore oil, gas and energy fields
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Coating the exterior of pipes for others by using a non-composite system that is applied through a molding and induction process for pipes, piping connections, line pipe, field joints, valves and subsea production structures in the offshore and onshore oil, gas and energy fields
11.
System and method for applying moldable material to a pipe
A molding system for applying moldable material to a pipe. An elongate mold has at least one elongate mold member movable relative another elongate mold member between open and closed positions. In the closed position, the mold may define an elongate vent between the mold members that extends along the longitudinal axis of the mold. Air in the mold cavity displaced by moldable material received into the mold cavity vents through the elongate vent along the longitudinal axis of the mold. The mold can include a positioner that positions the mold members in the closed position while the mold is filled with the moldable material. The positioner also allows movement of the first mold member toward the open position to partially open the mold as the moldable material cures to reduce forces imparted upon the mold due to expansion of the moldable material during curing.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
A molding system for applying moldable material to a pipe. An elongate mold has at least one elongate mold member movable relative another elongate mold member between open and closed positions. The mold includes a pipe support that extends generally radially into a mold cavity along a support axis. An inner end of the support is configured to support the pipe in a molding position in which an annular portion of the mold cavity extends circumferentially around the pipe. After moldable material in the annular portion of the mold cavity can support the pipe, the support is withdrawn from the mold cavity by moving outwardly along the support axis. An injector selectively dispenses additional moldable material into a space formed by the support in the existing moldable material.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Coating the interior and exterior of pipes for others by spraying on a fluid or powder epoxy-based barrier for protection from abrasion and corrosion; applying protective coatings to pipes, piping connections and valves; applying polymer and epoxy coatings to pipes, piping connections and valves; applying concrete weight coating and insulation to pipes
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Coating the interior and exterior of pipes for others by spraying on a fluid or powder epoxy-based barrier for protection from abrasion and corrosion; applying protective coatings to pipes, piping connections and valves; applying polymer and epoxy coatings to pipes, piping connections and valves; applying concrete weight coating and insulation to pipes
