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2019/4
Development of thermostable dry acid composition based on sulfamic acid
Chemical sciences

Authors: Lyubov A. MAGADOVA graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1975. She is Doctor of Technical Sciences. Professor of the Department of Chemical Reagents for Oil and Gas Industry from Gubkin Russian State University of Oil and Gas (National Research University). She is specialist in the field of oilfield chemistry, reagents and technologies for hydrocarbons recovery processes. She is author of more than 180 scientific publications. E-mail: lubmag@gmail.com
Mikhail D. PAKHOMOV graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1976. He is Head of the Surfactant and Acid Systems Division at the Research and Educational Center “Oilfield Chemistry”. He is specialist in the field of acid treatment, applications of surfactants. He is author of more than 40 scientific publications. E-mail: pahomov.m.d@mail.ru
Timur I. YUNUSOV graduated from Gubkin Russian State University of Oil and Gas (National Research University) in 2018. He is Engineer of the Surfactant and Acid Systems Division at the Research and Educational Center “Oilfield Chemistry”. E-mail: timyun96@gmail.com
Vadim A. TSYGANKOV graduated from Gubkin Russian State University of Oil and Gas in 2006. He is Candidate of Technical Sciences, Associate professor of the Department of Chemical Reagents for Oil and Gas Industry from Gubkin Russian State University of the Oil and Gas (National Research University). He is specialist in the field of oilfield chemistry, technologies and reagents for well stimulation, in particular, acid treatment technologies. He is author of more than 40 scientific publications. E-mail: tsygankov.v@gubkin.ru

Abstract: This article is dedicated to the development of the dry acid composition based on sulfamic acid for well bottomhole zone acid treatment after injection profile flattening treatment. The main disadvantage of the compositions of this kind is complications occurring at temperatures higher than 60oC due to intense hydrolysis of sulfamic acid. The presented results showed that this disadvantage could be eliminated. Thermal stability is attributed to sulfamic acid by addition of specific modifiers that shift the equilibrium of sulfamic acid hydrolysis to the original agents. The developed composition is workable, meets industrial standards and may be recommended for use during the injectivity profile flatte- ning treatment.

Index UDK: 622.276.63

Keywords: acid treatment, sulfamic acid, hydrolysis, dry acid composition, amho-lytic surfactant

Bibliography:
1. Khisamov R.S., Gazizov A.A., Gazizov A.Sh. Increase of treated formations sweep efficiency. M: OAO “VNIIOENG”, 2003, 568 p.
2. Kelland M.A. Production chemicals for the oil and gas industry. Taylor&Fransis Group, 2009, 404 p.
3. Gluschenko V.N., Silin M.A. Oilfield chemistry. Published as 5 volumes. Volume 4. Acid treatment. Edited by I.T. Mischenko. M.: Interkontakt Nauka, 2010, 703 p.
4. New guidebook for chemists and technologists. Chemical equilibrium. Solutions properties. Edited by S.N. Simanova. SPb.: ANO “NPO Professional”, 2004, 998 p.
5. Amiyan V.A., Ugolev V.S., Pankratova M.N. Temperature influence on the efficiency of well acidizing with sufamic acid. Oil industry, 1971, no. 2, p. 35-38.
6. Amiyan V.A., Ugolev V.S., Kuznetsov G.N. Results of investigation of metal corrosion in sulfamic acid solutions. Oil industry, 1969, no. 10, p. 62-65.
7. Amiyan V.A., Ugolev V.S. Physical and chemical methods of well stimulation. M.: Nedra, 1970, 280 p.
8. Silin M.A., Magadova L.A., Tsygankov V.A., Mukhin M.M., Davletshina L.F. Acid treat- ment and methods of acid compositions testing: Guidebook. M.: Gubkin University of Oil and Gas, 2011, 142 p.

2010/4
Synthesis and study of protective and surface characteristics of amine-containing surfactants
Oil and gas processing, chemistry of oil and gas

Authors: Mikhail A. SILIN was born in 1957, graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1978. He is First vice Rector for academic work at Gubkin Russian State University of Oil and Gas, Head of the Department of Chemical Engineering for Oil and Gas Industry, doctor of chemical sciences, author of 192 publications in the field of petroleum chemistry and oil production. E-mail: silin_7735002@himeko.ru
Lyubov’ A. MAGADOVA was born in 1953, graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1975. She is professor of the Department of Chemical Engineering for Oil and Gas Industry at Gubkin Russian State University of Oil and Gas, author of 160 publications in the field of petroleum chemistry and oil production. E-mail: magadova0108@himeko.ru
Nadezhda S. MARKOVA was born in 1982, graduated from Gubkin Russian State University of Oil and Gas in 2005. She is junior researcher of the Department of Chemical Engineering for Oil and Gas Industry at Gubkin Russian State University of Oil and Gas, co-author of 9 publications in the field of petroleum chemistry and oil production. E-mail: biblioteka@nedrainform.ru
Nadezhda M. NIKOLAYEVA was born 1931, graduated from Memdeleyev Moscow Institute of Chemical Engineering in 1954, consultant, senior researcher. She is the author of 70 publications in the field of petroleum chemistry. E-mail: biblioteka@nedrainform.ru
Mikhail D. PAKHOMOV was born in 1953, graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1976. He is researcher of the Department of Chemical Engineering for Oil and Gas Industry at Gubkin Russian State University of Oil and Gas, author of 42 publications in the field of petroleum chemistry and oil production. E-mail: biblioteka@nedrainform.ru

Abstract: Amine-derivatives on the basis of saturated and unsaturated higher fatty acids and polyethylene polyamine were synthesized. Different molar ratio of original components was found to produce different effect on protective and surface characteristics of the developed corrosion inhibitors. The composition of the corrosion inhibitor with high protective effect and foaming and emulsification stability was determined

Index UDK: УДК: 622.276

Keywords: surface active agent, corrosion inhibitor, Corrosion, foam-formation, Foam stability, emulsification, polyethylenepolyamine, Saturated acids, non-saturated acids, Byproduct, Protective effect, time lability of emulsion, hydrogen-sulfide corrosion

Bibliography: