US 11,789,170 B2
Induced seismicity
Bogdan Bocaneala, Blackburn (GB); Michael Welch, Leeds (GB); Murat Zhiyenkulov, Kyiv (UA); Vincenzo De Gennaro, Pau (FR); Kamshat Ussenova, Kyiv (UA); and David Cameron, Bucharest (RO)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 16/310,485
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Jun. 15, 2016, PCT No. PCT/IB2016/000985
§ 371(c)(1), (2) Date Dec. 17, 2018,
PCT Pub. No. WO2017/216594, PCT Pub. Date Dec. 21, 2017.
Prior Publication US 2019/0331811 A1, Oct. 31, 2019
Int. Cl. G01V 1/00 (2006.01); E21B 47/06 (2012.01); G01V 1/28 (2006.01); E21B 43/26 (2006.01); E21B 49/00 (2006.01); E21B 41/00 (2006.01); G06F 30/28 (2020.01); E21B 7/04 (2006.01)
CPC G01V 1/008 (2013.01) [E21B 41/00 (2013.01); E21B 43/26 (2013.01); E21B 47/06 (2013.01); E21B 49/00 (2013.01); G01V 1/282 (2013.01); G06F 30/28 (2020.01); E21B 7/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
measuring, for a time period, micro-seismic events from a formation to determine if the formation has an active or non-active fault;
obtaining a mechanical earth model of a formation;
modeling, using the mechanical earth model, a hydraulic fracture growth pattern in the formation from a stimulation of the formation thereby generating a combined fracture growth and mechanical earth model, wherein the stimulation comprising an injection of a volume of fluid into the formation;
determining a first increase in pressure in the formation resulting from the stimulation based on the combined fracture growth and mechanical earth model;
receiving data indicating a second increase in pressure in the formation associated with a previously conducted drilling operation;
comparing the first and second increases in pressures to determine if the first and second increases in pressure are within a pressure threshold relative to one another;
predicting whether a seismic event will occur in the formation when the first and second increases in pressure are within the pressure threshold, wherein predicting comprises:
predicting that the seismic event will occur in the formation when the second increase in pressure resulted in a previous seismic event;
predicting that the seismic event will not occur when the second increase in pressure did not result in a previous seismic event; and
altering at least one parameter of the stimulation to mitigate risk of the seismic event if the seismic event is predicted.