Abstract: The invention provides polypropylene compositions for producing soft nonwoven fabrics, consisting of at least three propylene-based copolymers differing in content of alpha-olefin comonomers. The provided fabrics are soft and pleasant to touch.

Abstract: A thermoplastic polyolefin composition which is capable of being shaped and repeatedly recycled, comprises propylene-based polymers, said composition being modified with 0.01-5 wt % of organic oligomeric silanes selected from partially hydrolyzed alkoxy substituted vinyl, allyl or methacryl silanes, and blends thereof, and 0.0005-0.5 wt % of a compound capable of generating free radicals.

Abstract: The invention provides shape-stable products for storing and releasing thermal energy, based on thermoplastic polymer compositions containing organic phase change materials (PCM) incorporated into a polymer matrix, the products withstanding multiple melting-crystallization cycles of the PCM while maintaining their shape, dimensions, and the thermal energy storage capacity.

Abstract: The invention provides polypropylene compositions for producing soft nonwoven fabrics, consisting of at least three propylene-based copolymers differing in content of alpha-olefin comonomers. The provided fabrics are soft and pleasant to touch.

Abstract: A thermoplastic polyolefin composition which is capable of being shaped and repeatedly recycled, comprises propy-lene-based polymers, said composition being modified with 0.01-5 wt % of organic oligomeric silanes selected from partially hydrolyzed alkoxy substituted vinyl, allyl or methacryl silanes, and blends thereof, and 0.0005-0.

Abstract: The invention provides shape-stable products for storing and releasing thermal energy, based on thermoplastic polymer compositions containing organic phase change materials (PCM) incorporated into a polymer matrix, the products withstanding multiple melting-crystallization cycles of the PCM while maintaining their shape, dimensions, and the thermal energy storage capacity.

Abstract: A tubular member (1) with a relative rough (1.5-10 ?m) inner surface (5) coated solid lubricating film (10) which is transformed into a substantially viscous rubbery viscoelasto-plastic phase at temperatures in a range between 50° C. and 110° C. is expanded by moving an expansion member (24) with a relatively smooth outer surface (roughness<1.5 ?m) therethrough, such that during expansion a viscous viscoelastoplastic substantially rubbery lubricating film (44) is generated between the tubular member (1) and the expansion mandrel (24), which film remains bonded to the rough inner surface (5) of the expanded tubular (1), but does not stick to the relatively hot and smooth expansion member (24).

Abstract: A tubular member (1) with a relative rough (1.5-10 ?m) inner surface (5) coated solid lubricating film (10) which is transformed into a substantially viscous rubbery viscoelasto-plastic phase at temperatures in a range between 50° C. and 110° C. is expanded by moving an expansion member (24) with a relatively smooth outer surface (roughness <1.5 ?m) therethrough, such that during expansion a viscous viscoelastoplastic substantially rubbery lubricating film (44) is generated between the tubular member (1) and the expansion mandrel (24), which film remains bonded to the rough inner surface (5) of the expanded tubular (1), but does not stick to the relatively hot and smooth expansion member (24).

Abstract: A method is provided of creating a pipe connector including a first connector member and a second connector member, said connector members being adapted to be connected and disconnected multiple times, the method comprising: a) providing at least one of the connector members with a contact surface; b) depositing particles of a galling resistant metal on each said contact surface; c) at least partially melting the particles of the galling resistant metal by subjecting the particles to a quantity of heat; and d) allowing the molten galling resistant metal to solidify thereby forming a galling resistant metal coating which is metallurgically bonded to the contact surface. The heat may be provided in the form of radiant energy, using a laser beam.

Abstract: A metal substrate (71) is coated with an enamel or other coating material (72) by irradiating the coating material (72) and substrate (71) with electromagnetic radiation to melt an underlying surface of the metal substrate (71) before melting the coating material (72) to create, after cooling, a fusion bond between the solidified substrate and coating material, whereby the fusion bonded interface (73) has an intermeshing irregular tongue and groove like microstructure profile shown in FIG. 7. The electromagnetic radiation may be unfocussed, circulinear or focussed at a point located within the metal substrate (71) to first melt the substrate (71).

Abstract: The invention provides a connector assembly for interconnecting tubular elements. The connector assembly comprises at least one pin member, at least one box member, and for each box member a respective coating layer. Each pin member has a threaded outer surface and each box member has a threaded inner surface allowing the pin member and the box member to be screwed together. Herein the respective coating layer is positioned between the threaded surfaces of the pin member and the box member. Each coating layer is of a softer material than said threaded surfaces. The connector assembly further comprises means for removing excess coating material during make up of the pin member and the box member.

Abstract: The invention provides a method of selecting a threaded tubular connector for qualification testing, the method comprising the steps of providing a test specimen (34) provided with a test surface that exhibits comparable material properties and/or surface topology as the sealing surface on the connector, determining a parameter of the test surface relating to the sealing capability of the sealing surface; subjecting the test surface to a load, the load corresponding to a selected phase of a qualification test procedure for the tubular connector; removing the load; determining a variation of the parameter; and ceasing the qualification test procedure if the variation of the parameter indicates a reduction of the sealing capability of the sealing surfaces.

Abstract: The invention provides a method of joining tubular members.

Abstract: A method is provided of creating a pipe connector including a first connector member and a second connector member, said connector members being adapted to be connected and disconnected multiple times, the method comprising: a) providing at least one of the connector members with a contact surface; b) depositing particles of a galling resistant metal on each said contact surface; c) at least partially melting the particles of the galling resistant metal by subjecting the particles to a quantity of heat; and d) allowing the molten galling resistant metal to solidify thereby forming a galling resistant metal coating which is metallurgically bonded to the contact surface. The heat may be provided in the form of radiant energy, using a laser beam.

Abstract: The invention discloses a method for surface enhancement of a pipe. The method includes the steps of: introducing the pipe in a wellbore; introducing cement slurry in the pipe from surface; introducing an expander cone in the pipe on top of the cement slurry, the expander cone having a largest outer diameter which is larger than the initial inner diameter of the pipe; pumping the expander cone towards the downhole end of the pipe, thereby moving the cement slurry to the downhole end and out of the downhole end and into an annulus enclosing the pipe, while and at the same time expanding the inner diameter of the pipe.

Abstract: The invention discloses a method and system for surface enhancement of a pipe. The method includes the steps of: introducing the pipe in a wellbore; and applying a ribbed pattern to the inner surface of the pipe. An expander cone, having a largest outer diameter which is larger than the initial inner diameter of the pipe and having an outer surface provided with a correspondingly ribbed pattern, is moved through the pipe to apply the pattern.

Abstract: The invention provides a method of joining tubular members.

Abstract: The invention provides a connector assembly for interconnecting tubular elements. The connector assembly comprises at least one pin member, at least one box member, and for each box member a respective coating layer. Each pin member has a threaded outer surface and each box member has a threaded inner surface allowing the pin member and the box member to be screwed together. Herein the respective coating layer is positioned between the threaded surfaces of the pin member and the box member. Each coating layer is of a softer material than said threaded surfaces. The connector assembly further comprises means for removing excess coating material during make up of the pin member and the box member.

Abstract: The invention provides a connector assembly for interconnecting tubular elements. The connector assembly comprises at least one pin member, at least one box member, and for each box member a respective coating layer. Each pin member has a threaded outer surface and each box member has a threaded inner surface allowing the pin member and the box member to be screwed together. Herein the respective coating layer is positioned between the threaded surfaces of the pin member and the box member. Each coating layer is of a softer material than said threaded surfaces. The connector assembly further comprises means for removing excess coating material during make up of the pin member and the box member.

Abstract: The invention relates to a method of radially expanding a tubular element extending into a wellbore formed in an earth formation, the tubular element including a first layer and a second layer extending around the first layer, said layers being separable from each other. The method comprises inducing each layer to bend radially outward and in an axially reverse direction so as to form an expanded tubular section extending around a remaining tubular section of the tubular element, wherein each layer has a respective bending zone in which the bending occurs, and increasing the length of the expanded tubular section by inducing the respective bending zones of the layers to move in an axial direction relative to the remaining tubular section. The layers in the respective bending zones are separate from each other so as to define an axial space between the layers.