Neftyanaya Provintsiya
electronic peer-reviewed scholarly publication
Neftyanaya provintsiya No. 2(34), 2023

Impact of saturating fluid on Cretaceous rock strength and elastic properties as exemplified in Sibneftegas production fields 

М.D. Subbotin, V.А. Pavlov, D.О. Кorolev, А.Yu. Кudymov, А.N. Мantorov, М.А. Skorobogach
DOI: https://doi.org/10.25689/NP.2023.2.85-96

Abstract


Numerous recent studies demonstrate a substantial impact of saturating fluid type on rock strength and elastic properties [1-8]. Lack of experimental research and limited applications of results obtained pose the major challenges for further studies.
This paper reviews research efforts aimed to study the changes in rock strength and elastic properties caused by saturating fluid variations in different types of Cretaceous sediments and possibilities for application of resultant data to address specific production issues. Based on the experience in development of Cenomanian gas-saturated deposits, forecasting of safe underbalance conditions for different sediments and premature flooding are of primary concern while bringing into production Lower Cretaceous sediments.
Core studies have revealed that the effects of saturating fluid type on rock strength and elastic properties are less pronounced in Lower Cretaceous sediments compared to Cenomanian sediments [1-3].
A steady trend of changing rock strength and elastic properties, including rocks with low clay content, suggests that this problem is the subject of continuing research.  

Key words:

laboratory core analysis, geomechanics, strength and elastic properties, Young’s modulus, uniaxial compression strength, angle of internal friction, thick walled cylinder strength 

References

1. Pavlov V.A., Lapin K.G., Gavris A.S., Ivantsov N.N., Volgin E.R., Toropov K.V. Estimation of influence of geomechanical effects on change of formation reservoir properties in conditions of slightly cemented reservoir. Territoriya Neftegaz [Oil and Gas Territory]. 2019, No. 10, pp.46-52 (in Russian)

2. Pavlov V.A, Kuleshov V.S. et al. Influence of the nature of the saturating agent on the elastic-strength properties of gas field rocks. Ekspozitsiya Neft Gaz [Exposition Oil Gas]. 2021, No.1, pp. 11-16. (in Russian)

3. Pavlov V.A., Pavlykov N.A., Subbotin M.D. et al. Justification of the wells production conditions of the Cenomanian gas reservoir of the Kharampurskoye field based on the results of geomechanical modeling. Ekspozitsiya Neft Gaz [Exposition Oil Gas]. 2021, No. 2, pp. 28-33. (in Russian)

4. Pavlov V.A., Pavlyukov N.A., Krasnikov A.A. et al. Otsenka vliyaniya nasyshchayushchego flyuida na uprugo-prochnostnye svoystva kompozitnykh materialov [Evaluation of the effects of saturating fluid on stress-strain properties of composite materials]. Moscow, 2019. SPE Russian Petroleum Technology Conference

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6. Roman Nepop, Nikolay Smirnov, Roman Molodtsov, Ivan Khomenok, Artur Abalian, Andrea Martin Atanes, Andrey Maltsev, Gennady Nemirovich Thick-Walled Cylinder Core Tests with Flushing by Various Fluids: Results and Practical Applications. SPE – 196929. (in English)

7. Martin Sigifredo Torres, Livan Blanco Valente. Geomechanics Based Completion Strategy Optimization for the Chemical Interaction Effect with Mechanical Properties. SPE-182030. (in English)

8. Rabat A., Tomas R., Cano M., Perez-Rey I., Siles J.S., Alejano L.R. Influence of water content on the basic friction angle of porous limestones – experimental study using an automated tilting table. Bulletin of Engineering Geology and the Environment. 2022, No.81. Article number: 223. (in English)

9. Subbotin M.D., Pavlov V.A. Integral planning of laboratory core analyses for geomechanical modeling on the example of AO Sibneftegaz sites. Karotazhnik [Well Logging]. 2022, No. 6 (320), pp. 44-56. (in Russian)

Authors

M.D. Subbotin, Chief Specialist, Geomechanics Projects Development Department, Tyumen Petroleum Research Center
79/1, Osipenko st., Tyumen, 625002, Russian Federation
E-mail: mdsubbotin@tnnc.rosneft.ru

V.A. Pavlov, PhD, Head of Department, Geomechanics Projects Development Department, Tyumen Petroleum Research Center
79/1, Osipenko st., Tyumen, 625002, Russian Federation
E-mail: vapavlov4@tnnc.rosneft.ru

D.O. Korolev, Head of Group, Geomechanics Projects Development Department, Tyumen Petroleum Research Center
79/1, Osipenko st., Tyumen, 625002, Russian Federation
E-mail: dokorolev@tnnc.rosneft.ru

А.Yu. Kudymov, Head of Department, Rock Geomechanics Department, Tyumen Petroleum Research Center
42, M. Gorky st., Tyumen, 625002, Russian Federation
E-mail: aykudymov@tnnc.rosneft.ru

A.N. Mantorov, Chief Manager, Department for Reservoir Productivity Increase and Production Enhancement Operations, АО Sibneftegaz
78a, Tayezhnaya st., Novy Urengoy, 629300, Russian Federation
E-mail: anmantorov@sibng.rosneft.ru

M.A. Skorobogach, PhD, Deputy Chief Geologist, Head of Department, Department for Planning of Production, Geological and Reservoir Simulation Modeling and Integrated Simulation, АО Sibneftegaz
78a, Tayezhnaya st., Novy Urengoy, 629300, Russian Federation
E-mail: maskorobogach@sibng.rosneft.ru

For citation:

М.D. Subbotin, V.А. Pavlov, D.О. Кorolev, А.Yu. Кudymov, А.N. Мantorov, М.А. Skorobogach Vliyaniye flyuida nasyshcheniya na uprugo-prochnostnyye svoystva gornykh porod melovykh otlozheniy na primere ob"yektov AO «Sibneftegaz» [Impact of saturating fluid on Cretaceous rock strength and elastic properties as exemplified in Sibneftegas production fields]. Neftyanaya Provintsiya, No. 2(34), 2023. pp. 85-96. 

DOI https://doi.org/10.25689/NP.2023.2.85-96. EDN IVBULM (in Russian)

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