Title:
METHOD OF DETECTING DEPOSITS AND BLOCKAGES IN A SUBSEA PIPE SEGMENT BORE
Document Type and Number:
WIPO Patent Application WO/2015/036871
Kind Code:
A3
Abstract:
A method and system for detecting the presence of a blockage within a subsea pipe segment (11) includes a submersible and remotely-operated vehicle (8) having a laser emitting element (9) and a hydrophone (13). The vehicle is positioned proximal to a subsea pipe segment of interest, and the laser emitting element is activated to irradiate a laser target (12) on an exterior portion of the pipe segment. The laser light is converted to heat energy, and heat is conducted from the laser target across the pipe wall to a portion of the bore of the pipe segment. Acoustic signals (14) are produced as a result, of one of the disassociation of gas from a portion of the solid deposit proximal to the laser target, stress cracks induced in the solid deposit and physical changes of state and physical displacement occurring within the blockage. The acoustic signals are detected by the hydrophone on the vehicle.
Inventors:
BOZSO ROBERT (HU)
BOZSO TAMAS (HU)
CZINKOTA IMRE (HU)
MOLNAR GABOR (HU)
VARI ZSOLT (HU)
BAJCSI PETER (HU)
BOZSO TAMAS (HU)
CZINKOTA IMRE (HU)
MOLNAR GABOR (HU)
VARI ZSOLT (HU)
BAJCSI PETER (HU)
Application Number:
PCT/IB2014/002657
Publication Date:
April 14, 2016
Filing Date:
September 11, 2014
Export Citation:
Assignee:
ZERLUX HUNGARY KFT (HU)
International Classes:
E21B47/00; E21B41/00; E21B41/04; F16L53/00; G01N25/02; G01N29/00
Domestic Patent References:
| WO2013113002A2 | 2013-08-01 |
Foreign References:
| CA2204950A1 | 1998-11-09 |
Other References:
IAN WALKER: "On-Line Diagnostics of Subsea & On-Line Diagnostics of Subsea & Surface Pipelines Surface Pipelines", 15 March 2005 (2005-03-15), XP055246084, Retrieved from the Internet [retrieved on 20160129]
PHANEENDRA KONDAPI ET AL: "OTC 24250 Today's Top 30 Flow Assurance Technologies: Where Do They Stand?", 9 May 2013 (2013-05-09), XP055246083, Retrieved from the Internet [retrieved on 20160129]
PHANEENDRA KONDAPI ET AL: "OTC 24250 Today's Top 30 Flow Assurance Technologies: Where Do They Stand?", 9 May 2013 (2013-05-09), XP055246083, Retrieved from the Internet
Attorney, Agent or Firm:
WP THOMPSON (No. 1 Mann Island, Liverpool L3 1BP, GB)
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