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Collaborating Authors
Romanov, A. S.
Abstract The purpose of this paper is to assess the technological efficiency of methods for increasing condensate recovery from the Achimov deposits of the Urengoy Oil and Gas Condensate Field (ะch52-3 reservoir within the East Urengoy License Area). The distinctive features of the Achimov reservoirs are the low permeability (of the order of 1 mD) and abnormally high initial reservoir pressure (โ 600 atm.). The technological performance was simulated using the ECLIPSE 300 composite flow model. To simulate the condensate recovery improvement methods at one of the ะch52-3 sections, the authors selected a development element the average parameters of which corresponded to the parameters of a full-scale model. The performance of various methods was evaluated by comparing the selected methods to the baseline scenario, which represents a traditional gas development process, i.e. the depletion. The methods for maintaining reservoir pressure by injecting various agents into the reservoir were considered as alternative scenarios for reservoir engineering: dry gas (cycling), nitrogen, water, WAG. In addition, the optimal ratio of injection and production wells, the voidage replacement, and gas recovery rate were selected. The economic efficiency of various development scenarios was estimated using an economic model. The complex approach was used to rank the options, taking into account both the technological results (gas / condensate recovery ratios) and economic indicators (NPV, state discounted revenue). The results of the studies on condensate recovery improvement confirm the technological applicability of unconventional technologies for the development of gas condensate fields, in particular, injection of nitrogen into the reservoir. These technologies make it possible to achieve a relative increase in condensate recovery by 40-50% compared to the baseline scenario. On the other hand, under current macroeconomic conditions, the conventional depletion method for gas-condensate recovery remains more attractive.
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Block V > Urengoyskoye Field > Achimov Formation (0.99)
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Block IV > Urengoyskoye Field > Achimov Formation (0.99)
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Block 5A > Urengoyskoye Field > Achimov Formation (0.99)
- (4 more...)
Selecting a Development System for Offshore Coastal Gas-Condensate Fields
Romanov, A. S. (Tyumen Petroleum Research Center) | Buchinsky, S. V. (Tyumen Petroleum Research Center) | Yushkov, A. Yu. (Tyumen Petroleum Research Center) | Glumov, D. N. (Tyumen Petroleum Research Center) | Voikov, G. G. (Venineft)
Abstract A case study of a gas-condensate field located on the northeastern shelf of Sakhalin Island demonstrates the possibility of development of condensate-containing gas reserves by drilling very long ERD wells (drilling from the shore). The development system described in the paper includes drilling well with upward orientation. Such design provides complete cleaning of a wellbore from fluids and solids accumulated over a long period of maintenance-free operation. The choice of a development system using horizontal wells is also associated with the geological structure of the field (massive type accumulation with a single gas-bearing contour is broken by tectonic faults into separate blocks with different hypsometric elevations). Under the technical, economical (drilling from platform and from land, the use of subsea production systems, ice gouging with hummocks), and environmental (presence of valuable fish species in water areas and permanent residence of indigenous peoples) limitations, the development of individual wells with vertical completions turned out to be unprofitable. For the first time for this type of accumulation located in a coastal zone, a unique method of monitoring the recovery of reserves within the cross-section, as well as movement of the gas-water contact without the use of monitoring and pressure observation wells was suggested.
- North America > United States > Illinois > Marine Field (0.99)
- Asia > Russia > Far Eastern Federal District > Sakhalin Island > Sea of Okhotsk > East Sakhalin - Central Sea of Okhotsk Basin > North Sakhalin Basin > Kirinsky Block > Kirinskoye Field > Kirinskoye Formation (0.99)
- Asia > Russia > Far Eastern Federal District > Sakhalin Island > Sea of Okhotsk > East Sakhalin - Central Sea of Okhotsk Basin > North Sakhalin Basin > Chayvo License Block > Chayvo License Block > Chayvo Field > Zone XVII/XVIII Formation (0.99)
- Asia > Russia > Far Eastern Federal District > Sakhalin Island > Sea of Okhotsk > East Sakhalin - Central Sea of Okhotsk Basin > Lunskoye Field (0.99)
New Approaches to Improve Economical Efficiency of Development of Gas-Condensate Reservoirs with Thin Oil Rims
Yushkov, A. Y. (TH?-BP) | Romanov, A. S. (TH?-BP) | Mukminov, I. R. (TH?-BP) | Ignatiev, A. E. (TH?-BP) | Romashkin, S. V. (TH?-BP) | Buchinsky, S. V. (TH?-BP) | Glumov, D. N. (TH?-BP) | Magdieva, L. K. (TH?-BP)
Abstract Using BU16 formation of the Urengoy oil and condensate field deposit as an example the authors have demonstrated that today in the absence of developed transport infrastructure high CAPEX and OPEX investments are inevitable. It will result in negative economic results in developing oil banks in gas and condensate deposits located in the Northern and Polar regions of the Russian Federation. This factor decreases attraction of such assets for investors significantly and actually oil reserves in oil banks and gas reserves in gas caps are not developed and it is uncertain when these reserves might be developed. As a result the state will get less revenue from developing hydrocarbon reserves.
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Block V > Urengoyskoye Field > Achimov Formation (0.98)
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Block IV > Urengoyskoye Field > Achimov Formation (0.98)
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Block 5A > Urengoyskoye Field > Achimov Formation (0.98)
- (2 more...)