US 11,655,700 B2
System and method for recycling miscible NGLs for oil recovery
Kevin D Hotton, Pagosa Springs, CO (US); Eyal Mordechai Aronoff, Newport Coast, CA (US); and Gevorg Noland Sargsyan, Lakewood, CO (US)
Filed by Pioneer Energy, Lakewood, CO (US)
Filed on Oct. 16, 2020, as Appl. No. 17/73,286.
Claims priority of provisional application 62/916,971, filed on Oct. 18, 2019.
Prior Publication US 2021/0115775 A1, Apr. 22, 2021
Int. Cl. E21B 43/40 (2006.01); B01D 3/42 (2006.01); B01D 3/14 (2006.01); C09K 8/592 (2006.01)
CPC E21B 43/40 (2013.01) [B01D 3/143 (2013.01); B01D 3/42 (2013.01); C09K 8/592 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for natural gas liquid miscible enhanced oil recovery for efficient recovery and reinjection of natural gas liquid injectants comprising: a separation system to separate three distinct streams: wastewater, liquid hydrocarbons and gaseous hydrocarbons, a second separation system whereby the liquid hydrocarbon stream is sent to a fractionation column to output a stabilized crude oil stream, an unfractionated Natural Gas Liquids (NGLs) mix with high concentration of methane and ethane in liquid phase as Enhanced Oil Recovery (EOR) fluid stream and an optional gaseous Enhanced Oil Recovery (EOR) stream, and, a well injection system for the EOR stream for enhanced oil recovery.