«Onshore and offshore oil and gas well construction»

Destruction of organic polymers as a growth factor of sulfate-reducing bacteria in drilling fluids

UDC: 622.24.06.2
DOI: 10.33285/0130-3872-2023-2(362)-21-25

Authors:

¹ Ukhta State Technical University, Ukhta, Russia

Keywords: drilling fluids, organic polymers, sulfate-reducing bacteria, reduction, homopolysaccharides, glycosidic bond, enzymatic hydrolysis

Annotation:

Enzymatic hydrolysis of drilling fluids organic components as a result of the reduction of sulfate-reducing bacteria (SRB), which are a biological catalyst, causes enormous harm to the economy of the oil and gas industry. The growth of SRB bacterial activity, accompanied by the formation of a significant amount of hydrogen sulfide, leads not only to the loss of technological properties of drilling fluids, damage to equipment, but also to a violation of the reservoir properties and a decrease of the produced fluid in the quality. The article discusses the reasons for the destruction of glycosidic bonds in natural polymeric reagents due to enzymatic hydrolysis accompanied by sulfate reduction. The reasons for the low efficiency of drilling fluids mineralization to prevent sulfate reduction are determined.

Bibliography:

1. Ryazanov Ya.A. Entsiklopediya po burovym rastvoram. – Orenburg: Letopis', 2005. – 664 s.
2. Rebinder P.A. Poverkhnostnye yavleniya v dispersnykh sistemakh. Kolloidnaya khimiya: izbr. tr. – M.: Nauka, 1978. – 368 s.
3. Sovremennye sostavy burovykh promyvochnykh zhidkostey: ucheb. posobie / V.P. Ovchinnikov, N.A. Aksenova, T.V. Grosheva, O.V. Rozhkova. – Tyumen': TyumGNGU, 2013. – 156 s.
4. Kister E.G. Khimicheskaya obrabotka burovykh rastvorov. – M.: Nedra, 1972. – 392 s.
5. Khimiya uglevodov / N.K. Kochetkov, A.F. Bochkov, B.A. Dmitriev [i dr.]. – M.: Khimiya, 1967. – 672 s.
6. Stepanenko B.N. Khimiya i biokhimiya uglevodov (polisakharidy): v 2 ch. Ch. 2: ucheb. posobie dlya vuzov. – M.: Vyssh. shk., 1978. – 256 s.
7. Bioraznoobrazie sul'fatredutsiruyushchikh bakteriy, razvivayushchikhsya na ob"ektakh teplosetey / L.M. Purish, L.G. Asaulenko, D.R. Abdulina, G.A. Iutinskaya // Mikrobiolog. zhurn. – 2014. – T. 76, № 3. – S. 11–17. – URL: http://valer.ru/f/bioraznoobraziyesulfatredutsiruyushchikhbakteriy.pdf (data obrashcheniya 02.11.2022).
8. Biotekhnologiya metallov. Prakticheskoe rukovodstvo / pod red. Z.A. Avakyan, A. Agate, S. Grudeva [i dr.]. – M.: Tsentr mezhdunar. proektov GKNT, 1989. – 374 s. – URL: https://www.geokniga.org/books/18882 (data obrashcheniya 08.11.2022).
9. Shkandratov V.V., Kim S.K. Aktual'nye problemy korrozii, metody i tekhnologii antikorrozionnoy zashchity, vnedryaemye na mestorozhdeniyakh "Lukoyl-Komi" // Territoriya Neftegaz. – 2007. – № 3. – S. 24–32.
10. Tsukanova A.N., Ulyasheva N.M. Vysokovyazkie ekzopolisakharidy i ikh rol' v destabilizatsii burovykh promyvochnykh zhidkostey // Innovatsionnye tekhnologii v neftegazovoy otrasli. Problemy ustoychivogo razvitiya territoriy: sb. tr. III Mezhdunar. nauch.-prakt. konf., Stavropol', 08-09 dek. 2022 g. – Stavropol': Severo-Kavkaz. feder. un-t, 2022. – S. 385–390.