US 12,116,874 B1
Method for neutralizing hydrogen sulfide in a wellbore with a venturi jet pump and oxidants
Larry Dove, Conroe, TX (US); Erik Reissig, Conroe, TX (US); and Von Krosigk, Conroe, TX (US)
Assigned to Tech Flo Consulting, LLC, Conroe, TX (US)
Filed by Tech Flo Consulting, LLC, Conroe, TX (US)
Filed on Apr. 28, 2022, as Appl. No. 17/731,667.
Int. Cl. E21B 43/12 (2006.01); C09K 8/532 (2006.01); E21B 43/24 (2006.01)
CPC E21B 43/124 (2013.01) [C09K 8/532 (2013.01); C09K 2208/20 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for neutralizing hydrogen sulfide (H2S) in wellbore comprising:
a. providing a venturi jet pump having an inlet nozzle between a packer and a tubing string in a wellbore in a reservoir;
b. injecting an oxidant into water to form a power fluid with a surface tension modification generator;
c. injecting the power fluid at an initial surface pressure into the tubing in the wellbore through the venturi jet pump thereby increasing the velocity and decreasing the pressure of the power fluid as the power fluid traverses the inlet nozzle forming an increased velocity power fluid;
e. drawing a reservoir fluid from the reservoir into the venturi jet pump and mixing the increased velocity power fluid with reservoir fluid in a draw down chamber of the venturi jet pump forming a molecularly mixed fluid;
f. in a mixing tube of the venturi jet pump connected to the drawn down chamber, reacting the oxidant of the molecularly mixed fluid with the reservoir fluid to:
(i) scavenge hydrogen sulfide forming a sulfate;
(ii) scavenge methyl sulfide forming a sulfate; or
(iii) explode cell membranes of anaerobic bacteria of the reservoir fluid.