Factors That Affect Gas-Condensate Relative Permeability

Kalla, Subhash; Leonardi, Sergio Adrian; Berry, Daniel W.; Poore, Larry D.; Sahoo, Hemant; Kudva, R. A.; Braun, Edward M.

doi:10.2523/17264-ms

Cited by 2 publications

(1 citation statement)

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“…The residual fluid saturations decreased as the interfacial tension decreases as expected from the effect of capillary number on residual fluid saturations. These concepts are corroborated by Kalla et al (2015), when correlating Corey exponents lower than 1.0 with IFT and stating that at the lowest IFT (i.e. 0.4), the relative permeability curves for gas were concave downward.…”

Section: Pressure Leak-off Characterizationmentioning

confidence: 63%

Modeling Interwell Fracture Interference and Huff-N-Puff Pressure Containment in Eagle Ford Using EDFM

Fiallos-Torres

Ganjdanesh

et al. 2019

SPE Oklahoma City Oil and Gas Symposium

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First, I would like to express my profound gratitude to my academic supervisor Dr. Sepehrnoori for the continuous guidance and support during these two years of graduate school. I am truly grateful for his interest and willingness to guide me since the very first day of my graduate studies. I would also like to express sincere gratefulness to Dr. Wei Yu for his dedication, expertise advises, and insistent valuable guidance. I will always appreciate how he shared part of his extensive expertise in unconventional reservoirs, and reservoir modeling with me. Also, I would like to thank Erich Kerr and his company for supplying the field data that made this research possible. I gained great practice and understanding through their suggestions for my research work. Their invaluable support received weekly through my entire career will always be appreciated. There are not enough words to express how convinced I am that this would not have been possible without the support of my family. I thank my father Mario and my mother María for covering part of my tuition, and also my sister Carla Adriana for their continuous encouragement to pursue my dreams. I would like to thank Carolina for her caring love and support. I am indebted to my parents, my sister and my girlfriend who never stopped encouraging during both the good and the not so good times. I would also like to thank Reza, Sutthaporn, Fabio, Jorge, and Esmail for their collaboration and assertive comments for my work and my research. Finally, a very special acknowledgment is extended to the Fulbright Commission of Ecuador, the Department of State of the United States, and the Cockrell School of Engineering for being the sponsoring entities which provided me the scholarships to fund and make this accomplishment possible.

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Section: Pressure Leak-off Characterizationmentioning

confidence: 63%

Modeling Interwell Fracture Interference and Huff-N-Puff Pressure Containment in Eagle Ford Using EDFM

Fiallos-Torres

Ganjdanesh

et al. 2019

SPE Oklahoma City Oil and Gas Symposium

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Enhance the Gas Productivity for Shale Gas Reservoirs Using Thermochemical Treatment

Hassan

Mahmoud

Al-Majed

et al. 2020

Day 3 Wed, January 15, 2020

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In shale reservoirs, the gas productivity is severely reduced due to the formation tightness. The extreme low permeability of shale formations can result in reducing the gas flow into the borehole, and consequently the gas production can be significantly reduced. This paper presents an effective technique for enhancing the gas productivity for shale gas reservoirs using thermochemical fluids. The used chemicals can generate heat and pressure in-situ and improve the flow condition by creating micro- factures in the shale rocks. Experimental measurements and analytical calculations were carried out to investigate the enhancement in gas productivity for shale samples due to the injection of thermochemical fluids. Coreflooding experiments and rate transient analysis (RTA) were conducted as well as nuclear magnetic resonance (NMR) measurements. Tight core samples from eagle ford formation were used in the flooding experiments. The improvement in gas productivity due to thermochemical injection was evaluated using rate transient analysis. The profiles of pressure-drop and gas flow-rate were used to estimate the gas productivity before and after the chemical treatment. NMR measurements were used to study the changes in the pore network due to thermochemical stimulation. The T2 signal distribution was obtained before and after the chemical injection. Furthermore, analytical calculations were performed to estimate the enhancement in gas productivity due to the thermochemical treatment. The increase in absolute open flow (AOF) and the productivity index (PI) due to the chemical treatment were determined. Results showed that treating shale rocks with thermochemical fluids can enhance the gas productivity by 62% and reduce the capillary pressure by more than 45%. Also, the absolute open flow can be increased four times due to the thermochemical injection into shale reservoirs. The generated heat and pressure due to thermochemical treatment can induce permanent alterations in the shale matrix and then improve the hydrocarbon flow for long term. NMR measurements, before and after the treatment, confirm the creation of tiny fractures during the chemical injection. The novelty of this work is that an effective treatment is presented to enhance the gas productivity for shale formations. Ultimately, this study will be very useful for treating the shale reservoirs with thermochemical fluids to improve the gas productivity, and consequently enhance the total gas production from shale reservoirs.

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Factors That Affect Gas-Condensate Relative Permeability

Cited by 2 publications

References 0 publications

Modeling Interwell Fracture Interference and Huff-N-Puff Pressure Containment in Eagle Ford Using EDFM

Modeling Interwell Fracture Interference and Huff-N-Puff Pressure Containment in Eagle Ford Using EDFM

Enhance the Gas Productivity for Shale Gas Reservoirs Using Thermochemical Treatment

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