Scholarly record
EVALUATION OF THE APPLICABILITY OF BIODEGRADATION MARKERS FOR IDENTIFICATION OF THE BYPASSED OIL ZONES
Abstract
The presented work highlights the general geochemical aspects and considers the theoretical basis of the method of geochemical monitoring of oil fields using the indicator of the quantitative ratio of organic compounds and their isomers - isobutane/butane. The object of the study are the microorganisms that can affect gas composition. The purpose of the work is to study the effect of microorganisms on the biodegradation of oil. The peculiarity of the oil composition will be used to search, delineate bypassed oil areas, and to monitor development of the field. Biodegradation of oils negatively affects its properties, thereby increasing the cost of its extraction and processing. In this regard, the study of biodegradation processes, namely, the establishment of the conditions for its course and the assessment of the microorganism activity effect on the composition of oil is an urgent task at the present time. In the course of the work, it was found that during the development of the field by the waterflooding method, the water cut of the reservoirs gradually increases and the area of the oil-water contact zone, where most of the microorganisms develop. As the intensity of field development increases, the isobutane / butane ratio increases. During the monitoring of the composition, it was noted that most of the deviations are accompanied by a noticeable change in the entire component composition of the gas. During the analysis, two large groups of anomalies were identified: anomalies associated with an increase in the gas compositional analysis and anomalies accompanied by a sharp increase in the percentage of methane in the total proportion of C1-C6.As a result of the analysis and comparison of the hydrodynamic and geochemical models of the site, maps of the density of residual mobile reserves were drawn, the most promising wells for additional development were identified.
Publication Impact Profile
- Citations
- CrossRef - Citation Indexes: 1
- Scopus - Citation Indexes: 2
Publication details
References10
Bennett B, Adams J.J. et al., The controls on the composition of biodegraded oils in the deep subsurface – Part 3. The impact of microorganism distribution on petroleum geochemical gradients in biodegraded petroleum reservoirs, Organic Geochemistry 56 (2013), pp. 94–105
Tan, Teck Choon, Schell, Christiane et al, Identification of Bypassed Oil For Development In Mature Water-Drive Reservoirs. Paper presented at the Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, October 2007
Kryganov, P. V., Afanaskin, et al, Identification of the reservoir parts with the bypassed oil on the basis of mathematical simulation and well tests analysis (Russian). OIJ 2019 (2019) pp, 54–57
Chemodanov, A. Ziniukov, R. A, Nourgaliev, D. K. (2021). Influence of Biodegradation Processes on the Relative Distribution of Normal and Isoalkanes in Oil. IOP Conference Series: Earth and Environmental Science. 666. 022093. DOI: 10.1088/1755-1315/666/2/022093.
Salahidinova G.T., Geohimicheskie osobennosti sostava neftej na uchastkah pereformirovaniya neftyanyh zalezhej, nahodyashchihsya na zavershayushchej stadii razrabotki (na primere Minnibaevskoj ploshchadi Romashkinskogo mestorozhdeniya), Nauki o Zemle, Issue № 8(62) 2017
Kaixi J, Wenxiang H, Nian X, Li P, Changchun H, Qingzheng G, The controls on the composition of biodegraded oils in the Liuhua11-1 Oilfield, Pearl River Mouth Basin, South China Sea, Chin. J. Geochem. (2015) 34(3), pp. 320–329
Peters К.E., Walters C.C., Moldowan J.М. The biomarker guide. – Cambridge U.K.: Cambridge University Press, 2005. – 1155 p.
Chemodanov A.E., Sudakov V. A., Khayrtdinov R.K., Safina R.E. Biomarker gradients of super-viscous oil as an estimation method of oil-water distribution // Geosystem Engineering. 2019. pp. 1–8.
Weiwei Y., Guangdi L, Yaojin G., Yuan F., Microbial alteration of natural gas in Xinglongtai field of the Bohai Bay Basin, China, Chin.J. Geochem.(2012)31, pp 055–063
Mark Pannekens, Lisa Kroll et al, Oil reservoirs, an exceptional habitat for microorganisms, New Biotechnology, Vol. 49, 2019, pp. 1-9, ISSN 1871-6784
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.