Geology, geography and global energy
Scientific and Technical Journal
Forecasting of behavior of drilling platform support on the shelf of the North Caspian Sea
2018. №3, pp. 218-224
Sheremetov I.M. - C.Sc. in Engineering, Associate Professor, Astrakhan State Technical University, 16 Tatishchev st., Astrakhan, 414056, Russian Federation, shrmtv@mail.ru
Serebryakov O.I. - D.Sc. in Geology and Mineralogy, Professor, Astrakhan State University, 1 Shaumyan st., Astrakhan, 414000, Russian Federation, geologi2007@yandex.ru
Grigoryan R.T. - post-graduate student, Astrakhan State Technical University, 16 Tatishchev st., Astrakhan, 414056, Russian Federation
Serebryakov And. O. - Senior Lecturer, Master, Astrakhan State University, 1 Shaumyan st., Astrakhan, 414000, Russian Federation, geologi2007@yandex.ru
Forecasting the process of interaction of the platform- offshore system includes the implementation of calculations of the stability of the base. The process of immersing the supports of Jack-up drilling rig into the bottom soil is accompanied by the development of areas of plastic deformations, ground flow, formation of compaction zones and decomposition. This causes significant changes in soil parameters. Relevant is the refinement of the characteristics of the base after the platform is placed at the drilling point. For this purpose, it is proposed to carry out geotechnical monitoring of the base of Jack-up using geophysical methods. In the context of this task, it is necessary to ensure the reliability of determining the strength characteristics of the underlying sediments of bottom sediments at any given time. The application of the geophysical method makes it possible to quickly perform predictive calculations based on actual information. In the process of geomonitoring, the actual state of the soils underlying the platform is reflected. The interpretation of the results obtained is influenced by the multifactority of the changes in the reflected signal. The considered medium in this case can be considered as a deterministic system, which makes it possible to apply asymptotic methods for further research.
Key words: Самоподъёмная плавучая буровая установка, шельф, устойчивость, геотехнический мониторинг, асимптотический метод, Jack-up drilling rig, offshore, stability, geotechnical monitoring, asymptotic method
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