Mariata – A professor and two other inventors at Mariata College have obtained U.S. patents for two procedures that enhance hydrocarbon recovery from shale reservoirs and sandstone reservoirs.
Ahmed Algarhi collaborated with Mohammed Soliman of the University of Houston and Lloyd Haynes of Texas Tech University to develop innovative methods. The patent was filed four years ago.
“Hydrocarbon recovery from conventional and non-conventional reservoirs is very low” Algarhi, who joined the Faculty of Petroleum Engineering at Marriott College in 2018, said.
The hydrocarbon recovery factor of conventional reservoirs is usually between 5% and 15% after the primary recovery and 35% to 45% after the secondary recovery, he said. The hydrocarbon recovery factor of organic shale reservoirs is usually between 5% and 10%, and 70% of the hydraulic fractures generated in such reservoirs are not produced, Algarhi said.
The first technique, called complex toe-to-heel flooding, maximizes oil recovery from sandstone formations in specific reservoir conditions. Algari said toe-to-heel flooding is an improvement over traditional toe-to-heel waterflowing and uses gravity separation to increase oil production rate and overall oil recovery.
The second finishing strategy, optimized zipper frock, enhances hydrocarbon recovery from organic shells. It is an advancement in organized zipper frock, zipper frock, alternate fracturing, and modified zipper frock, as it uses ballooned fractures to create stress shadows, which reduces stress anisotropy and thus increases the complexity and productivity near the wellbore.
“For the past 10 years, companies in the United States have been rapidly adopting a horizontal well completion method known as zipper fracturing. Instead of digging one well at a time and breaking it hydraulically, the zipper method is to dig multiple wells from one pad site and break one stage hydraulically into one well, while preparing for the next, as wireline and perforation operations take place on the other, ”he said. Algarhi said. “The multi-well completion method derives its name from the zipper-like configuration of the fracture stages from wells drilled with relatively narrow spacing.”
Many companies in the U.S. use the completion method on almost every pad site they penetrate, saving millions of dollars every year while accelerating the development of their well inventories.
“But the great gift is that zipper fractures increase initial production and account for the ultimate recovery rate when designed so that fractures stimulate the maximum possible reservoir volume.” Algarhi said.
Prior to completing his doctorate in Petroleum Engineering at Texas Tech, Algarhi worked in the design and implementation of hydraulic fracturing from 2003-12014.
“He is currently in charge of the Department of Petroleum at the University of Houston. I wrote a proposal to Soliman and Lloyd Haynes, a professor at Texas Tech, and we agreed to develop these two new technologies as part of my PhD. D. the work” Algarhi said. “Both of these technologies help increase oil and gas recovery, thus securing more hydrocarbons for the US and making our country more vibrant.”
Algarhi, director of PioPetro, a nonprofit education program, hopes that these procedures will one day help the U.S. achieve energy independence.
An assistant professor, he teaches algorithm production and finishing, geomechanics, and non-conventional reservoir evaluation and development. Algarhi received the Regional Distinguished Achievement Award 2021 for the Faculty of Petroleum Engineering in the East and North America region.
Algarhik holds a Ph.D. He also holds a Masters of Science in Petroleum Engineering from Texas Tech, a Masters Degree in Petroleum Engineering, and a Postgraduate Diploma in Natural Gas Engineering and a Masters Degree in Mining Engineering from the University of Cairo (Egypt). Has more than 11 years of experience in the oil and gas industry with operations and service companies focusing on hydraulic fracturing, geomechanics, and assessment and development of non-conventional reservoirs.