公开(公告)号：WO2015036871A2

公开(公告)日：2015-03-19

申请号：PCT/IB2014002657

申请日：2014-09-11

Applicant: ZERLUX HUNGARY KFT

Inventor： BOZSO ROBERT ,  BOZSO TAMAS ,  CZINKOTA IMRE ,  MOLNAR GABOR ,  VARI ZSOLT ,  BAJCSI PETER

CPC classification number: E21B41/04 ,  E21B41/0007 ,  E21B47/0001 ,  G01N29/225 ,  G01N29/2418 ,  G01N2291/0258 ,  G01N2291/2634

Abstract: A method and system for detecting the presence of a blockage within a subsea pipe segment includes a submersible and remotely-operated vehicle having a laser emitting element and a hydrophone. The vehicle is positioned proximal to a subsea pipe segment of interest, and the laser emitting element is activated to irradiate a laser target 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 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.

Abstract translation: 用于检测海底管段内是否存在堵塞的方法和系统包括具有激光发射元件和水听器的潜水和遥控操作的车辆。 车辆定位在感兴趣的海底管段附近，激光发射元件被激活以将激光靶照射在管段的外部部分上。 激光被转换为热能，并且热量从激光靶穿过管壁传导到管段的孔的一部分。 结果产生声信号，其中气体从靠近激光靶的固体沉积物的一部分分离出来，在固体沉积物中引起的应力裂纹和状态的物理变化以及在堵塞内发生的物理位移。 声信号由车辆上的水听器检测。