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The novel HydroFlame direct-contact combustion process has been adapted for use in a Downhole Steam Generator (DHSG), which enables the…

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In this process, a high intensity flame is surrounded by two films of rotating water. The flame is in direct…

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According to the United States Geological Survey, more than 95% of the world's Heavy Oil is located in reservoirs deeper…

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HydroFlame offers a technology solution to benefit businesses involved in Heavy Oil and Bitumen production. This solution offers environmental, technical.....

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HydroFlame Technologies, LLC was established in August 2008 with the sole purpose of commercializing the HydroFlame novel direct contact...

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On April 15, 2011, Senator Mary Landrieu visited the HydroFlame facility as part of her tour of the Louisiana Business…

 

Gas-Assisted Gravity Drainage (GAGD) Process

The current commercial practice of gas-based enhanced oil recovery processes involves either Continuous Gas Injection (CGI) or Water-Alternating-Gas (WAG) injection. Over 60 commercial projects in West Texas and other parts of the world have amply demonstrated that these CGI and WAG processes have been technically successful and commercially profitable. However, the oil recoveries from the CGI and WAG processes fall in the range of 5-15% of the remaining oil. The Gas-Assisted Gravity Drainage (GAGD) process, invented and patented at LSU, has yielded oil recoveries in the range of 65 – 95% in laboratory experiments conducted at realistic reservoir conditions. The GAGD process involves utilizing several vertical wells for injection of CO2 in addition to drilling long horizontal wells for production. Injected CO2 accumulates at the top of the payzone due to gravity segregation and displaces oil, which drains to the horizontal producer. This maximizes the volumetric sweep efficiency. The gravity segregation of CO2 also helps in delaying, or even eliminating, CO2 breakthrough to the producer as well as preventing the gas phase from competing for flow with oil. Thus GAGD enables sequestering injected CO2 in addition to yielding much higher recoveries of trapped oil from depleted reservoirs.