US 11,859,469 B2
Utilizing natural gas flaring byproducts for liquid unloading in gas wells
Muath Fahad Almuayli, Dammam (SA); and Adel Ali Al-Qahtani, Khobar (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Oct. 20, 2021, as Appl. No. 17/506,360.
Prior Publication US 2023/0120702 A1, Apr. 20, 2023
Int. Cl. E21B 41/00 (2006.01); F23G 7/08 (2006.01)
CPC E21B 41/0071 (2013.01) [F23G 7/08 (2013.01); F23G 2207/20 (2013.01); F23G 2209/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method comprising:
flowing a quantity of a nitrogen stream through a coiled tubing to a well formed in a subterranean formation to begin a liquid unloading process in the well;
receiving a production stream from the well in response to flowing the nitrogen stream;
combusting at least a portion of the production stream to produce a flaring byproduct stream;
flowing a quantity of the flaring byproduct stream with the nitrogen stream through the coiled tubing to the well to continue the liquid unloading process in the well;
measuring a flow rate of the flaring byproduct stream;
in response to the flow rate of the flaring byproduct stream reaching a threshold flow rate, decreasing the flow of the nitrogen stream to the well;
measuring a base sediment and water (BS&W) percentage of the production stream; and
in response to the BS&W percentage reaching a threshold BS&W percentage, decreasing the flow of the flaring byproduct stream to the well.