US 12,247,866 B1
Sensor deployment for distributed acoustic sensing with noise cancellation using a reference coil
Ira Bush, Van Nuys, CA (US); and Mikko K. Jaaskelainen, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 7, 2023, as Appl. No. 18/532,956.
Int. Cl. G01H 9/00 (2006.01); E21B 47/135 (2012.01); G10K 11/178 (2006.01)
CPC G01H 9/004 (2013.01) [E21B 47/135 (2020.05); G10K 11/17854 (2018.01)] 10 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting one or more light pulses from a launch optoelectronics into a distributed acoustic system (DAS), wherein the DAS is at least partially disposed in a wellbore of interest and a reference wellbore;
generating an interrogator specific noise profile for the reference wellbore;
generating an application specific noise profile for a first sensor fiber disposed in the reference wellbore;
applying a noise control to measurements of a backscatter light from a second sensor fiber disposed in the wellbore of interest; and
optimizing a signal to noise ratio (SNR) of the measurements from the backscatter light.