US 12,071,892 B2
Compressed N2 for energy storage
Omar Kabir, Houston, TX (US); Gary W. Sams, Houston, TX (US); and Ronald J. Manson, Spring, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, AS (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Sep. 1, 2023, as Appl. No. 18/459,538.
Application 18/459,538 is a division of application No. 16/769,886, granted, now 11,788,466, previously published as PCT/US2018/064705, filed on Dec. 10, 2018.
Claims priority of provisional application 62/596,240, filed on Dec. 8, 2017.
Prior Publication US 2023/0407786 A1, Dec. 21, 2023
Int. Cl. F02C 6/14 (2006.01); F02C 3/13 (2006.01); F02C 6/06 (2006.01); F02C 7/08 (2006.01)
CPC F02C 6/14 (2013.01) [F02C 3/13 (2013.01); F02C 6/06 (2013.01); F02C 7/08 (2013.01); F05D 2210/12 (2013.01); F05D 2220/32 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method comprising:
producing a gas stream of at least 90% nitrogen by volume and directing the gas stream to an inlet of a compressor;
pressurizing the gas stream using the compressor;
injecting the pressurized gas stream into a storage volume;
releasing a gas from the storage volume to an inlet of a turbine generator to generate electricity;
recycling a first portion of the gas exiting an outlet of the turbine generator into the storage volume by directing the first portion into the inlet of the compressor and thereafter injecting the first portion of the gas into the storage volume; and
venting a second portion of the gas exiting the outlet of the turbine generator to the atmosphere.