摘要:
An offshore connector system (fig. 3B) for installing a flexible member to an offshore structure comprising a guide channel, wherein the connector system comprises a female connector (1) and a male connector (8); and a female connector (1) for connecting a flexible member to a guide channel. The female connector (1) comprises a tube-shaped wall defining a bore and a centre axis, wherein the tube-shaped wall comprises at least one spring arrangement. The spring arrangement comprises a strip-shaped portion formed by one or more cuts in the tube-shaped wall of the female connector (1), wherein the strip-shaped portion having a flexible portion (3b) and a root (2) where it is rooted to the tube-shaped wall of the female connector (1) and wherein the flexible portion (3b) comprises an inwards facing engagement protuberance (4c).
摘要:
The present invention relates to an offshore installation comprising a flexible pipe, said flexible pipe comprises from the inside and out an internal pressure sheath, one or more armor layers and an outer sheath, and at least one length of the flexible pipe is provided with a stocking surrounding the outer sheath and comprising individual fiber straps braided around the outer sheath in such a way that the stocking will tighten around the flexible pipe when subjected to pull and the stocking is adapted for long-term connection with a tether line, thereby connecting the flexible pipe to the tether line in the offshore installation.
摘要:
The present invention relates to a method for producing a flexible pipe for offshore transport of fluids such as oil and gas, said pipe having a length (L p ) and a bore with a diameter (D Bore ) and comprises from the inside and out at least an internal pressure sheath of polymer material, one or more armor layers and an outer sheath of polymer material, said method comprises the steps of: extruding the internal pressure sheath of polymer material; winding one or more armor layers around the extruded internal pressure sheath; extruding the outer sheath of polymer material; optionally extruding one or more intermediate sheaths of polymer between the internal pressure sheath and the outer sheath of polymer material; at least one of the extruded sheaths of polymer material is extruded continuously along the length of the pipe wherein at least one zone A and at least one zone B are extruded along the length of the pipe and where zone A is extruded from a polymer comprising polypropylene (PP), and where the extruded sheath in zone A has an Youngs-modulus (E A ) zone B is extruded from a thermoplastic vulcanizate polymer (TPV), and the extruded sheath in zone B has an Youngs-modulus (E B ), where E B A and where the polymers forming zone A and B are switched during extrusion to provide a continuous sheath.
摘要:
The present invention relates to an offshore pipe system comprising a first unbonded flexible pipe and a second unbonded flexible pipe for transportation of fluids such as oil or gas. Each of the unbonded flexible pipes comprises a sealing sheath and an electrically conductive armor layer, and, moreover, the system comprises a first end fitting connected to the first end of the first unbonded flexible pipe and a second end fitting connected to the first end of the second unbonded flexible pipe. In the offshore pipe system the electrically conductive armor layer of the first unbonded flexible pipe is electrically connected with the electrically conductive armor layer of the second unbonded flexible pipe via a first electrical connection and a second electrical connection. To obtain an electrical circuit the the first and second electrical connections are applied with a distance along the length of the first unbonded flexible pipe and the second unbonded flexible pipe, respectively. The invention also relates to a method for heating pipes by forming an electrical circuit between the pipes.
摘要:
The invention concerns a flexible pipe for offshore applications, such as for use as a riser in oil production. The flexible pipe has a longitudinal axis and comprises a pressure resilient core pipe structure with an inner surface defining a bore, and at least a pair of cross wound and non-bonded tensile armor layers surrounding said core pipe structure. The pressure resilient core pipe structure comprises an embedded pressure armor structure, wherein the embedded pressure armor structure comprises a plurality of layers of helically wound continuous fibers, wound with a winding angle of about 60 degrees or more relative to the longitudinal axis of the pipe and embedded in a cured polymer matrix. The fibers are individually bonded to the cured polymer matrix. Preferably each of said layers of helically wound continuous fibers have a fiber density of at least about 40 %.
摘要:
An unbonded flexible pipe is disclosed with a longitudinal axis and which comprises from inside outwards a carcass 2 formed by metal windings with gaps between neighbouring windings, at least one covering tape 3 and an inner sealing sheath 5 of a polymer extruded onto the covering tape 3. The covering tape 3 is helically wound with a winding direction defining a tape length direction and a tape width direction perpendicular to the tape length direction. The covering tape 3 comprises lengthwise continuous filament yarns (warp yarns) arranged in the tape length direction of the covering tape. The covering tape 3 has a thickness direction perpendicular to the tape length direction and the tape width direction. The warp yarns have a thickness determined in the thickness direction of the covering tape 3 of about 100 µm or less, such as of about 50 µm or less, such as from about 3 to about 30 µm, preferably from about 5 to about 25 µm.
摘要:
The invention relates to an elongate reinforcement element for reinforcing an unbonded flexible pipe, a method of producing the elongate reinforcement elementand an unbonded flexible pipecomprising the elongate reinforcement element. The reinforcement element comprises a plurality of elongate armor strips and an elongate support element comprising a channel, wherein the plurality of elongate armor strips arearranged in the channel of the elongate support element. Preferably the elongate armor strips are arranged to be superimposed in the channelandthe plurality of superimposed elongate armor strips are displaceable in relation to each other upon bending of the elongate reinforcement element.
摘要:
The invention relates to a thermal insulating element having an element length. The element comprises a base material comprising at least one first series of hole configurations, said first series comprising a plurality of elongated interior holes. Each comprises a central hole axis (A) along its elongation, each central hole axis extending substantially mutually in parallel to each other at least along a first longitudinal direction. Each hole in a plane perpendicular to the first general longitudinal direction comprises a cross sectional hole shape. The elastic modulus E of said base material at least along said first longitudinal direction is equal to or larger than 1.5 GPa. The thermal insulating element is suitable for varying and high pressure environments, such as subsea waters. Further, the invention relates to subsea structures, such as armoured unbonded flexible pipes for hydrocarbon transfer comprising such a thermal insulating element. Further, the invention relates to a method of manufacturing such an element and a method of manufacturing such an armoured unbonded flexible pipe.
摘要:
The invention relates to an armouring element (30) for an unbonded flexible pipe. The armouring element (30) has a longitudinal axis (32) and an elongated outer shape along said axis. The armouring element (30) further has a longitudinal recess (34) configured for fully or partly taking up a sensor element. The recess (34) has a recess surface area and at least a surface area fixing part of the recess surface area has surface finish comprising a surface roughness Ra value of about 0.2 μm or more.
摘要翻译:本发明涉及一种用于无粘合柔性管的arm ing ing element(。。。。。。。。。。。。 铠装元件(30)具有沿所述轴线的纵向轴线(32)和细长的外部形状。 铠装元件(30)还具有构造成用于完全或部分地吸收传感器元件的纵向凹部(34)。 所述凹部(34)具有凹部表面积,所述凹部表面区域的至少表面积固定部的表面光洁度包含表面粗糙度Ra值为0.2μm以上。
摘要:
The invention relates to an unbonded flexible pipe having a length along a longitudinal axis, a first pipe end, and a second pipe end. The pipe comprises a plurality of whole length layers extending from the first pipe end to the second pipe end. The plurality of whole length layers comprises at least a tubular inner sealing sheath, at least one armour layer and an outer protective layer. The unbonded flexible pipe further comprises at least one thermally insulating layer arranged between the internal sealing sheath and the outer protective layer in an insulated length section. The flexible pipe comprises an inner part comprising at least the internal sealing sheath and any other whole length layers being internal to the thermally insulating layer. The flexible pipe further comprises an outer part comprising at least the outer protective layer and any other whole length layers being external to the thermally insulating layer. The at least one thermally insulating layer is terminated at a distal termination point. The distal termination point being in a distance from at least one of the first and the second pipe end of the unbonded flexible pipe. The invention further relates to a flexible pipe system and its use.