US 11,111,765 B2
Well livening tool based on nitrogen producing chemistry
Abdulrahman Abdulaziz Al-Mulhem, Dhahran (SA); and Mohammed Abdullah Bataweel, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Apr. 16, 2018, as Appl. No. 15/953,851.
Prior Publication US 2019/0316450 A1, Oct. 17, 2019
Int. Cl. E21B 43/12 (2006.01); C06D 5/06 (2006.01); E21B 43/243 (2006.01); E21B 47/00 (2012.01)
CPC E21B 43/122 (2013.01) [C06D 5/06 (2013.01); E21B 43/243 (2013.01); E21B 47/00 (2013.01)] 9 Claims
OG exemplary drawing
1. A method for increasing production of fluids from a well having a wellbore extending into a formation having a hydrocarbon reservoir, the method comprising:
inserting a tool into the wellbore, the tool comprising:
a body defining an interior chamber, the interior chamber containing a plurality of reactants, the plurality of reactants comprising sodium azide;
an ignition component connected to a wireline, the ignition component comprising an igniter;
initiating reaction of the sodium azide to produce nitrogen in-situ in the well, wherein the volume of produced nitrogen is proportional to a true vertical depth and a cross-sectional area of the well, and comprises an amount sufficient to fill the wellbore; and
releasing the nitrogen from the interior chamber into the wellbore to lighten the fluid column in the wellbore and lift fluids in the wellbore.