Wellstream, Inc.

Wellstream International Limited

John Robert Belcher

Embodiments of a system and method for sealing an end of a flowline to an end fitting are disclosed. Such methods include providing an end fitting housing having a bore, wherein a portion of the bore has a tapered inner surface, inserting an open end of a flexible pipe into the bore, the flexible pipe having an external layer, to create a tapered annular space between the tapered inner surface and the external layer, and positioning a ring into the tapered annular space such that the ring radially contracts upon the external layer causing the external layer to deform to create a seal.

High temperature end fitting and method of use

A pipe and a method of manufacturing same according to the pipe is formed, at least in part, with a tubular member formed of a plastic material, and dispersing a plurality of electrical current conductive materials in the plastic material for increasing the electrical conductivity of the tubular layer.

Temperature controlled pipe and method of manufacturing same

An end fitting in which to receive a flexible pipe end to be joined includes an annular seal unit comprised of a resilient elastomeric composition contained in a tapered rigid housing ring force fit in a tapered recess of a surrounding component so as to engage the outer surface of the received pipe end.

High temperature end fitting

The end fitting of a flexible flowline is provided with a mechanical clamp that secures the end fitting to the flowline while isolating the sealing area between the end fitting and the flowline from tension forces exerted on the flowline body. The pressure seal between the end fitting and the flowline is disposed behind the mechanical clamp so that the seal area of the flowline remains unaffected by flowline tension forces. The flowline is connected to the end fitting with a tubular assembly sleeve that is concentrically disposed between layers of the flow conduit adjacent the conduit end. During the initial assembly of the end fitting to the flowline, collet fingers in the assembly sleeve are snapped behind a receiving shoulder formed internally of the end fitting. The assembly sleeve may be welded to the flowline end before the sleeve is inserted into the end fitting. Snapn-in connection of the separable sleeve permits the flowline end to be welded and otherwise prepared for mating with the end connector before it is inserted into the end connector. In the assembled position, the sleeve is contained within the end fitting intermediate layers of the flowline end. The mechanical seal connecting the end fitting to the flowline body compresses the flowline radially toward the internal connector components to mechanically secure the end fitting and flowline body. The flowline end intermediate the clamp and the free end of the end fitting maintains a pressure seal with the surrounding end fitting and seal ring as the flowline is stressed in tension. Lateral and longitudinal adjustments in the fasteners of the clamp permit adjustment of the radial forces exerted by the sealing and clamping mechanism against the flowline.

Stress isolated seal for flexible flowline connector

A tubular sleeve has a first end inserted between concentric inner and outer layers of a flexible flowline. The tubular sleeve is welded to the inner sleeve. The tubular sleeve has serrated outer surfaces for cutting into the outer layer of the flexible flowline, or alternatively, has saw tooth edges at its one end for cutting into the outer layer of the flexible flowline. The outer end of the tubular sleeve is fixedly attached to the interior of a cup-shaped end piece, either by a snap coupling or by a threaded connection.

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Panama City, FL, United States of America

John Robert Belcher