US 9,810,049 B2
Systems and methods for inline chemical injection for dump flood water injectors
Robert Matthew Dean, Houston, TX (US); Varadarajan Dwarakanath, Houston, TX (US); Taimur Malik, Houston, TX (US); Will Sherman Slaughter, Katy, TX (US); and Dustin L. Walker, Houston, TX (US)
Assigned to CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed by Chevron U.S.A. Inc., San Ramon, CA (US)
Filed on Jun. 25, 2015, as Appl. No. 14/750,284.
Claims priority of provisional application 62/016,957, filed on Jun. 25, 2014.
Prior Publication US 2015/0376998 A1, Dec. 31, 2015
Int. Cl. E21B 43/16 (2006.01); E21B 33/124 (2006.01); E21B 43/11 (2006.01); E21B 43/12 (2006.01)
CPC E21B 43/16 (2013.01) [E21B 33/124 (2013.01); E21B 43/11 (2013.01); E21B 43/128 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of inline water injection, comprising:
collecting water from a source reservoir into a water collection zone of an injection well, wherein the injection well is in fluid communication with the source reservoir and a target reservoir, wherein the injection well is drilled into a formation, and wherein the source reservoir and the target reservoir are different reservoirs in the formation;
injecting the water from the source reservoir through a static mixer, wherein the static mixer is disposed in the injection well and the static mixer is intended to remain in the injection well for an economic life of the injection well;
delivering and injecting a concentrated chemical solution from a source outside of the injection well into the static mixer while injecting the water from the source reservoir through the static mixer;
mixing the water from the source reservoir and the concentrated chemical solution in the static mixer, resulting in an injection fluid;
injecting the injection fluid into the target reservoir to mobilize hydrocarbons in the target reservoir towards a producing well; and
recovering the hydrocarbons mobilized by the injection fluid from the producing well.