Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1997-08-27
2000-11-07
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
137341, 138 33, 166248, 166245, 392304, 392321, 405157, 405169, 405170, F16L 104
Patent
active
061427071
ABSTRACT:
A system for direct electric heating of a subsea pipeline is disclosed in the form of a pipe-in-pipe flowline having an electrically conductive outer carrier pipe and an electrically conductive inner pipe or flowline arranged longitudinally, substantially concentrically within the outer pipe. An annulus is defined between the inner and outer pipes and a pipe insulating joint assembly structurally joins, but electrically insulates, the inner and outer pipes at a first end of the subsea pipeline. A power input provided on the surface facilities is electrically connected across the inner and outer pipes at the first end of the pipeline, and an electrical pathway completes the circuit by connecting the inner and outer pipes at the second end of the pipeline.
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Stop Paraffin Build-up and Realize Your Well's Full Potential . . . Plug in Paratrol. International, Inc. (PTI), 15423 Vantage Parkway
Bass Ronald Marshall
Langner Carl Gottlieb
Shell Oil Company
Smith Mark A.
Taylor Dennis L.
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