US 12,072,264 B2
Leak detection system for subsea equipment
Andrew J. Speck, Milton, MA (US)
Assigned to ONESUBSEA IP UK LIMITED, London (GB)
Appl. No. 17/754,616
Filed by ONESUBSEA IP UK LIMITED, London (GB)
PCT Filed Oct. 7, 2020, PCT No. PCT/US2020/054484
§ 371(c)(1), (2) Date Apr. 7, 2022,
PCT Pub. No. WO2021/071880, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/911,453, filed on Oct. 7, 2019.
Prior Publication US 2022/0364947 A1, Nov. 17, 2022
Int. Cl. G01M 3/04 (2006.01); B63G 8/38 (2006.01); B63G 8/39 (2006.01); E21B 41/00 (2006.01); G01N 21/64 (2006.01); G01S 7/48 (2006.01); G01S 7/51 (2006.01); G01S 17/89 (2020.01)
CPC G01M 3/04 (2013.01) [B63G 8/38 (2013.01); B63G 8/39 (2013.01); E21B 41/0007 (2013.01); G01N 21/6408 (2013.01); G01S 7/4802 (2013.01); G01S 7/51 (2013.01); G01S 17/89 (2013.01); G01N 2201/0218 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A leak detection system, comprising:
a light source configured to output emitted light into a region of water;
a light detector configured to receive returned light from the region of the water and to output a detector signal indicative of the returned light;
a mount configured to couple the light source and the light detector to a subsea structure; and
at least one controller communicatively coupled to the light detector, wherein the at least one controller comprises a memory and a processor, and the at least one controller is configured to:
receive the detector signal;
detect hydrocarbons within the region of the water in response to detecting a hydrocarbon wavelength within the returned light indicative of presence of the hydrocarbons within the region of the water;
determine at least one position of the hydrocarbons within the region of the water based on a time difference between a first time at which the emitted light is output from the light source and a second time at which the returned light at the hydrocarbon wavelength is received at the light detector;
generate a three-dimensional model of the subsea structure based on the detector signal; and
output an output signal indicative of the at least one position of the hydrocarbons within the region of the water and the three-dimensional model of the subsea structure.