US 12,013,507 B2
Increasing resolution of subsurface inversion
Zhao Zhang, Houston, TX (US); Yijie Zhou, Houston, TX (US); Sandra C. Saldana, Houston, TX (US); and David Bradly Christensen, Houston, TX (US)
Assigned to CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed by Chevron U.S.A. Inc., San Ramon, CA (US)
Filed on Dec. 20, 2021, as Appl. No. 17/556,002.
Prior Publication US 2023/0194737 A1, Jun. 22, 2023
Int. Cl. G01V 1/28 (2006.01); G01V 1/30 (2006.01)
CPC G01V 1/282 (2013.01) [G01V 1/306 (2013.01); G01V 2210/614 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for increasing resolution of subsurface inversion, the system comprising:
one or more physical processors configured by machine-readable instructions to:
obtain seismic reflection information, the seismic reflection information defining seismic reflection response in a subsurface region;
generate seismic characteristic information based on subsurface inversion of the seismic reflection information, the seismic characteristic information defining subsurface characteristics of the subsurface region at a first resolution, wherein the subsurface inversion of the seismic reflection information utilizes information in a time-domain but ignores information in a frequency domain, which results in the seismic characteristic information defining the subsurface characteristics of the subsurface region at a first resolution, wherein a given subsurface characteristic of the subsurface region is invisible within the seismic characteristic information due to the subsurface inversion being performed in the time-domain; and
generate improved seismic characteristic information using a neural network, the neural network trained using pairs of lower resolution subsurface inversion data and higher resolution well log to utilize both the information in the time-domain and the information in the frequency domain to increase resolution of input subsurface characteristics, wherein based on the seismic characteristic information being input to the neural network, the neural network outputs the improved seismic characteristic information, the improved seismic characteristic information defining the subsurface characteristics of the subsurface region at a second resolution higher than the first resolution, wherein inclusion of the information in the frequency domain in generating the improved seismic characteristic information reveals the given subsurface characteristic of the subsurface region in the improved seismic characteristic information.