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Saint-Petersburg, Russia

Zatsepin V.V.,Gazpromneft
Neftyanoe Khozyaistvo - Oil Industry | Year: 2011

The question of reducing of the gas intake capacity of injection wells in the process of gas injection into the reservoir is considered. Data presented in this paper shows that this phenomenon can be explained only by the process of water clathrates generation in a porous medium of the well bottom zone of the formation. The features of an oil gas injection into the formation and its impact on the processes occurring In the well bottom zone are analyzed. Source

Mordvinova V.V.,Russian Academy of Sciences | Artemyev A.A.,Gazpromneft
Russian Geology and Geophysics | Year: 2010

The three-dimensional shear velocity lithospheric structure at depths from 0 to 70 km beneath the southern Baikal rift system and its surroundings has been imaged by inversion of P-to-SV receiver functions from 46 digital stations operated in two teleseismic international projects in southern Siberia and Mongolia. The receiver functions were determined from teleseismic P waveforms and inverted to obtain depth dependences of S velocities at each station which were related to tectonic structures. The computed vertical and horizontal sections of the 3D shear velocity model imaged a transition from relatively thin crust of the southern Siberian craton to thicker crust in the folded area south and southeast of Lake Baikal, with a local zone of thin crust right underneath the South Baikal basin. The velocity structure beneath the Baikal rift, the mountains of Transbaikalia, Mongolia, and the southern craton margin includes several low-velocity zones at different depths in the crust. Some of these zones may record seismic anisotropy associated with mylonite alignment along large thrusts. © 2010. Source

Karsakov V.A.,Gazpromneft
Society of Petroleum Engineers - SPE Russian Oil and Gas Exploration and Production Technical Conference and Exhibition 2014, RO and G 2014 - Sustaining and Optimising Production: Challenging the Limits with Technology | Year: 2014

In this paper presented method of optimum well numbers determination based on technical and economics calculations by using advanced software tools. The obtained results allow with arguments to justify quantity and location of well pads for field. Also author point out relations between all aspects during design filed development and indicate valuable and importance of well padding stage for reservoir engineering. Copyright 2014. Society of Petroleum Engineers. Source

Krasnov D.,Gazpromneft
7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences | Year: 2016

Goal of current work is to estimate different proppant types and placements impact on well productivity in gas condensate reservoir which is developed by vertical wells with hydraulic fracturing. Theoretical review of processes in gas condensate reservoirs was conducted. Condensate distribution inside and around hydraulically fractured well was investigated. Equation for additional pressure drop due to presence of condensate bank was derived. Relative pemeabilities were obtained using modified Brooks and Corey model. Alternative description of non-Darcy flow in gas condensate reservoirs was considered. In order to provide sensitivity analysis for well and fracture parameters using different proppant types, mech sizes and various techniques of proppant placement original program was built based on MS Excel VBA. Approach for gas reservoir performance estimation was extended to gas condensate case. Main results of conducted sensitivity analysis for various proppants and placements are: 1. Condensate dropping leads to similarity in different proppant types and mech sizes use. Proppants become more similar in the production context with gas enrichment. 2. Consideration of alternative proppant pack placement such as creation of high permeable channels in current study may not give significant increasing of production in case of gas well. Source

Ekimenko A.V.,Gazpromneft
7th EAGE Saint Petersburg International Conference and Exhibition: Understanding the Harmony of the Earth's Resources Through Integration of Geosciences | Year: 2016

Structural mapping is important part of seismic interpretation. In this study was analyzed the seismic data in several fields. Given the accuracy levels of mapping for different oil fields and differen geological intervals. Shows the change of mapping accuracy over time (drilling new wells). Source

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