Key words: Eastern Siberia, Riphean deposits, conceptual modeling, fracturing, carbonate rocks.

The paper presents a conceptual model of the carbonate Riphean reservoir of the Yurubcheno-Tokhomskoye field. The model of Riphean reservoir is based on core lab analysis, pethrophysical, seismic and production data. The article describes an integrated approach to determining the reservoir’s conceptual model and creating geological and simulation models.

References

1. Bagrintseva K.I., Usloviya formirovaniya i svoystva karbonatnykh kollektorov nefti i gaza (Conditions of formation and properties of carbonate reservoirs of oil and gas), Moscow: Publ. of Russian State University for the Humanities, 1999, 285 p.

2. Van Golf-Racht T.D., Fundamentals of fractured reservoir engineering, Elsevier Scientific Publishing Company, Amsterdam, Oxford, New York, 1982.

3. Kontorovich A.E., Izosimova A.N., Kontorovich A.A. et al., Geologiya i geofizika - Russian Geology and Geophysics, 1996, V. 37, no. 8, pp. 166-195.

4. Kuznetsov V.G., Skobeleva N.M., Markova V.N., Naydenov O.V., Ryabchenko V.N., Geologiya nefti i gaza – The journal Oil and Gas Geology, 2006, no. 5, pp. 34-42.

5. Kutukova N.M., Nauchno-tekhnicheskiy vestnik OAO “NK “Rosneft'”, 2009, no. 3, pp. 6-10.

Key words: Western Siberia, the genetic types of oils, the conditions of formation of deposits, the mixed type of oil, gas isotopy, the molecular parameters of oils.

On the basis of molecular and isotopic parameters of oil and gas shows the participation of different source rocks in the formation of deposits of the south-east of Western Siberia. The three main genetic types are distinguished among the studied oils. They were generated source rocks of the Upper Jurassic (Bazhenov type), Jurassic and Triassic (Togur type) and Paleozoic (Paleozoic type). Shown that many hydrocarbon fluids do not belong to any of the selected type, and are mixed fluids.Scheme of deposits formation of oil and gas Kazanskoye field was proposed based on the investigation results of oils, condensates and gases.

References

1. Goncharov I.V., Nosova S.V., Samoylenko V.V., Proceedings of the V international conference “Khimiya nefti i gaza” (Chemistry of oil and gas). – Tomsk: Publ. of Institute Atmospheric Optics SB RAS, 2003, pp. 10-13.

2. Goncharov I.V., Oblasov N.V., Samoylenko V.V., Fadeeva S.V., Krinin V.A., Volkov V.A., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 8, pp. 12-16.

3. Galimov E.M. Kodina L.A., Issledovanie organicheskogo veshchestva i gazov v osadochnykh tolshchakh dna mirovogo okeana (The study of organic matter and gases into sediments of the ocean floor), Moscow: Nauka Publ., 1973, 228 p.

4. Goncharov I.V., Korobochkina V.G., Oblasov N.V., Samoylenko V.V., Geokhimiya – Geochemistry International, 2005, no. 8, pp. 892-898.

5. Goncharov I.V., Geokhimiya neftey Zapadnoy Sibiri (Geochemistry of oil in Western Siberia), Moscow: Nedra Publ., 1987, 181 p .

6. Kontorovich A.E., Bogorodskaya L.I., Golyshev S.I., Stasova O.F., Proceedings of the Siberian Research Institute of Geology, Geophysics and Mineral Resources, 1980, V. 283, pp. 86-122.

7. Fomin A.N., Proceedings of the V international conference “Khimiya nefti i gaza” (Chemistry of oil and gas). – Tomsk: Publ. of Institute Atmospheric Optics SB RAS, 2003, pp. 34-36.

8. Galimov E.M., Source and mechanisms of formation of gaseous hydrocarbons in sedimentary rock, Chemical Geology, 1988, V. 1, no. 3, pp. 77-95.

9. Zor'kin L.M., Starobinets I.S., Stadnik E.V., Geokhimiya prirodnykh gazov neftegazonosnykh basseynov (Geochemistry of natural gas of oil and gas basins), Moscow: Nedra Publ., 1984, 248 p.

10. Mangazeev V.P., Stepanova G.S., Fomin A.I., Goncharov I.V. et al., Neftyanoe khozyaystvo – Oil Industry, 2005, no. 10, pp. 12-17.

11. Goncharov I.V., Oblasov N.V., Samoylenko V.V., Nosova S.V., Neftyanoe khozyaystvo – Oil Industry, 2006, no. 8, pp. 19-23.

12. Peters K.E., Walters C.C., Moldowan J.M., The biomarker guide, Cambridge, U.K.: Cambridge University Press, 2005, 1155 p.

Key words: modeling, hydrocarbon systems, sedimentary basins, source rocks.

This paper describes the experience of Rosneft basin modeling, challenges arising in the process of sedimentary basin modeling. The examples are provided of practical application of hydrocarbon system simulation technologies.

References

1. Malyshev N.A., Obmetko V.V., Borodulin A.A., Nauchno-tekhnicheskiy vestnik OAO “NK “Rosneft'”, 2010, no. 1, pp. 20-28.

2. Malyshev N.A., Obmetko V.V., Borodulin A.A. et al., Materials of XLII Tectonic Meeting, Geologiya polyarnykh oblastey zemli (Geology of the polar areas of the Earth), V. 2, Moscow: Geos Publ., 2009, pp. 32-37.

3. Malyshev N.A., Obmetko V.V., Borodulin A.A. et al., Materials of XLII Tectonic Meeting, Tektonika i geodinamika skladchatykh poyasov i platform fanerozoya (Tectonics and geodynamics of the fold belts and Phanerozoic platforms), V. 2, Moscow: Geos Publ., 2009, pp. 23-29.

4. Andieva T.A., Neftegazovaya geologiya. Teoriya i praktika – Petroleum Geology - Theoretical and Applied Studies, 2008, V. 3, no. 1.

5. Vinogradov V.A., Gusev E.A., Lopatin B.G., Proceedings of the All-Russian Research Institute of Geology and Mineral Resources of the World Ocean - VNIIOkeangeologia “Geologo-geofizicheskie kharakteristiki litosfery Arkticheskogo regiona” (Geological and geophysical characteristics of the lithosphere in the Arctic region), St. Petersburg, VNIIOkeangeologia, 2004, V. 5, pp. 202-212.

6. Drachev S.S., Geotektonika – Geotectonics, 2000, no. 6, pp. 43-58.

7. Zavarzina G.A., Shkarubo S.I., Neftegazovaya geologiya. Teoriya i praktika – Petroleum Geology - Theoretical and Applied Studies, 2012, V. 7, no. 3.

8. Ivanova N.M., Sekretov S.B., Geologicheskoe stroenie akvatoriy Mirovogo okeana (Geological structure of the world's oceans), Leningrad: Publ. of NPO “Sevmorgeo”, 1989, pp.77-91

9. Petrovskaya N.A., Materials of XLII Tectonic Meeting, Geologiya polyarnykh oblastey zemli (Geology of the polar areas of the Earth), 2009, V. 2, Moscow: Geos Publ., pp.112-115.

Key words: Sorokin Swell, fault-bounded oil reservoirs, Lower Devonian, new exploration directions.

Based on review of the geological structure, basin history and evolution of hydrocarbon systems of the Varandey-Adzvinskaya zone, the authors made a conclusion of favorable conditions for the fault-bounded traps for oil accumulations at the eastern flank of the Sorokin Swell. The main reservoirs are related to the Lower Devonian formations. The region had several stages with different oil migration paths due to tectonic reconstruction. Structure of the nearby oil fields supports the proposed concept, making a good basis for new exploration directions.

References

1. Belonin M.D., Prishchepa O.M., Teplov E.L., Budanov G.F., Danilevskiy S.A., Timano-Pechorskaya provintsiya: geologicheskoe stroenie, neftegazonosnost' i perspektivy osvoeniya (Timan-Pechora province: geology, petroleum potential and prospects of development), St. Petersburg: Nedra Publ., 2004, 396 p.

2. Malyshev N.A., Razlomy evropeyskogo severo-vostoka SSSR v svyazi s neftegazonosnost'yu (Fractures of the European North-East of the USSR in connection with the petroleum potential), Leningrad: Nauka Publ., 1986, 112 p.

3. Malyshev N.A., Tektonika, evolyutsiya i neftegazonosnost' osadochnykh basseynov evropeyskogo severa Rossii (Tectonics, evolution, and petroleum potential of sedimentary basins of the European North of Russia), Ekaterinburg: Publ. of Ural Branch of RAS, 2002, 269 p.

4. Dedeev V.A., Getsen V.G., Zaporozhtseva I.V. et al., Struktura platformennogo chekhla Evropeyskogo severa SSSR (The structure of the platform cover of the USSR European North), Leningrad: Nauka Publ., 1982, 198 p.

5. Gayduk V.V., Prokop'ev A.V., Metody izucheniya skladchato-nadvigovykh poyasov (Methods of studying the fold-thrust belt), Novosibirsk: Nauka Publ., 1999, 160 p.

6. Nikishin A.M., Malyshev N.A., Polyakov A.A., Strukturnaya geologiya osadochnykh basseynov (Structural geology of the sedimentary basins), Moscow – Izhevsk: Publ. of Institute of Computer Science, 2008, pp. 141-168.

7. Danilevskiy S.A., Sklyarova Z.P., Trifachev Yu.M., Geoflyuidal'nye sistemy Timano-Pechorskoy provintsii (Geo-fluidal systems of the Timan-Pechora), Geo-fluidal systems of the Timan-Pechora, Ukhta: Publ. of GUP “Timano-Pechorskiy nauchno-issledovatel'skiy tsentr”, 2003, 298 p.

Key words: chemicals and technologies audit, united technical requirements for chemicals of Rosneft Oil Company, chemicals electronic raw, reagents input control, division of production processes chemicalization.

Significant role of technologies relates with chemicals using in oil production, preparation and transporting in Rosneft Oil Company is noted in the paper. Cumulative statistics of chemicals nomenclature and chemicals suppliers is described. New subdivision in Company structure is created - division of production processes chemicalization, aims and tasks of the creation. The short description of corporative chemicals bank data and “chemicals electronic raw” is presented. United technical requirements for chemicals – first step of public unification of requirements for chemicals and chemicals suppliers. Structure, aims, tasks and first results of pilot project “chemicals and technologies audit” are presented in the article.

Key words: hydrodynamic modeling, low-permeability and highly heterogeneous reservoir, high production rate decline for the new wells, regularization of the inverse problem solving.

In this paper a semi-analytical approach for well productivity calculation in low-permeability and highly heterogeneous reservoir is proposed. Model considered allows explaining a high production rate decline for the wells operating in such conditions. Method of different interlayers flow capacity determination is considered based on identification of connected and isolated parts of the reservoir during waterflooding. Integration of rate transient analysis and steady-state production rate evaluation is used. Technique described can be used for the prediction of new wells production rate.

References

1. Chekalyuk E.B., Neftyanoe khozyaystvo – Oil Industry, 1957, no. 4, pp. 33-36.

2. Yudin E.V., Lubnin A.A., Roshchektaev A.P., Territoriya neftegaz, 2011, no. 4, pp. 40-45

3. Metropolis N., Ulam S., The Monte Carlo Method, J. Amer. statistical assoc., 1949, V. 44, no. 247 335, p. 341.

4. Krasnov V.A., Toropov K.V., Roschektayev A.P., Yakasov A.V., Express method of oil recovery ratio estimation on the basis of oil reservoir statistical characteristics, SPE 136139.

5. Yudin Evgeniy, Lubnin Alexander, Simulation of multilayer wells operating, SPE 149924.

6. Shchelkachev V.N., Osnovy i prilozheniya teorii neustanovivsheysya fil'tratsii (Fundamentals and applications of the theory of unsteady filtration), Moscow: Neft' i gaz Publ., 1995, P. 2, 493 p.

7. Krasnov V.A., Yudin E.V., Lubnin A.A., Nauchno-tekhnicheskiy Vestnik OAO "NK "Rosneft'", 2010, no. 2, pp. 2-6.

8. Prats M., Effect of vertical fractures on reservoir behavior – incompressible fluid case, SPE 1575-G

Key words: hydraulic fracturing, self-induced hydraulic fracturing, fracture opening pressure, fracture closure pressure.

This work is devoted to the analysis of stimulated hydraulic fracturing dynamics on RN-Yuganskneftegaz LLC oilfields for the purpose of self-induced hydraulic fracturing condition assessment on the oilfield scale. This information allows to define the injection pressures range for the injection wells to control the self-induced hydraulic fracturing effect for the purpose of reservoir pressure maintenance optimization.

References

1. Afanas'eva A.V., Gorbunov A.T., Shustef I.N., Zavodnenie neftyanykh mestorozhdeniy pri vysokikh davleniyakh nagnetaniya (Waterflooding of oilfields at high pressure injection), Moscow: Nedra Publ., 1975, 215 p.

2. Davletbaev A., Baykov V., Ozkan E., Garipov T., Usmanov T., Asmandiyarov R., Slabetskiy A., Nazargalin E., Gidrodinamicheskie issledovaniya skvazhin v mnogoplastovykh nagnetatel'nykh skvazhin v usloviyakh prevysheniya davleniya zakachki nad davleniem raskrytiya treshchin (Multi-layer steady-state injection test with higher bottomhole pressure than the formation fracturing pressure), SPE 136199.

3. Baykov V.A., Davletbaev A.Ya., Usmanov T.S., Stepanova Z.Yu., Asmandiyarov R.N., Neftegazovoe delo. Elektronnyy nauchnyy zhurnal - The electronic scientific journal Oil and Gas Business, 2011, no. 1, URL: http://www.ogbus.ru/authors/Baikov/Baikov_1.pdf.

4. Mal'tsev V.V., Asmandiyarov R.N., Baykov V.A., Usmanov T.S., Davletbaev A.Ya., Neftyanoe khozyaystvo – Oil Industry, 2012, no. 5, pp. 70-73.

4. Economides M.J., Nolte K.G., Reservoir stimulation, 3rd edition, Wiley, NY and Chichester,  2000, 750 p.

5. Latypov I.D., Borisov G.A., Khaydar A.M., Gorin A.N., Nikitin A.N., Kardymon D.V., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 6, pp. 34-38.

6. Settari A., Warren G.M., Simulation and field analysis of waterflood induced fracturing, SPE 28081.

7. Longuemare P., Detienne J-L., Lemonnier P., Bouteca M., Onaisi A., Numerical modeling of fracture propagation induced by water injection/re-injection, SPE 68974.

8. Hustedt B., Zwarts D., Bjoerndal H.-P., Masfry R., van den Hoek P.J., Induced fracturing in reservoir simulations: application of a new coupled simulator to waterflooding field examples, SPE 102467.

9. Shchelkachev V.N., Osnovy i prilozheniya teorii neustanovivsheysya fil'tratsii (Fundamentals and applications of the theory of unsteady filtration), Moscow: Neft' i gaz Publ., 1995, P. 1, 586 p.

10. Keck R.G., Reiter D.F., Lynch K.W., Upchurch E.R., Analysis of measured bottomhole treating pressures during fracturing: do not believe those calculated bottomhole pressures, SPE 63033.

Key words: well test, wavelet analysis, time series.

This paper discusses perspectives of automatic well test data processing.  Well test data treated as a non-stationary time series can be studied by means of wavelet analysis. The approach suggested allows one to carry out well test data denoising and smoothing, recognize informative intervals in telemetry system curves and flow regimes in pressure response plots. In order to illustrate the method efficiency, field examples are presented.

References

1. Athichanagorn S., Horne R.N., Kikani J., Processing and interpretation of long-term data from permanent downhole pressure gauges, SPE 56419, 1999.

2. Daubechies I., Ten lectures on wavelets, Philadelphia (PA) SIAM, 1992.

3. Chui C.K., An introduction to wavelets, Academic Press, Boston, 1992.

4. Mallat S., A wavelet tour of signal processing: The sparse way, 3rd Ed., Academic Press - Elsevier, 2009.

5. Donoho D.L., Johnstone I.M., Adapting to unknown smoothness via wavelet shrinkage, Journal of American Statistical Association, 1994, V. 90, no. 432, pp. 1200-1224.

6. Ortiz C.E.P., Aguiar R.B., Pires A.P., Wavelet filtering of permanent downhole gauge data, SPE 123028, 2009.

7. Nomura M., Processing and interpretation of pressure transient data from permanent downhole gauges: dissertation for the degree of Doctor of Phylosophy, Stanford University, USA, 2006.

8. Bourdet D., Well test analysis: the use of advanced interpretation models, Paris, 2002.

Key words: reservoir heterogeneity, connectivity, waterflooding performance, recovery factor.

Influence of reservoir characterization parameters variation to the development efficiency for Priobskoye oil field is considered. Waterflooding performance is analyzed for different parts of the field and predicted values of recovery factor are estimated. Empirical correlations of recovery factor depending on well density and reservoir characteristics describing vertical and lateral reservoir heterogeneity are determined.

References

1. Kazakov A.A., Neftepromyslovoe delo, 1976, no. 8, pp. 5-7.

2. Mirzadzhanzade A.Kh., Khasanov M.M., Bakhtizin R.N., Etyudy o modelirovanii slozhnykh sistem neftegazodobychi. Nelineynost', neravnovesnost', neodnorodnost' (Studies on the modeling of oil and gas complex systems. Non-linearity, non-equilibrium, heterogeneity), Ufa: Gilem Publ., 1999,  462 p.

3. Dake L.P., The practice of reservoir engineering. – Elsevier, 1994

4. Zheltov Yu.P., Razrabotka neftyanykh mestorozhdeniy (Oilfields development), Moscow: Nedra Publ., 1986, 332 p.

4. Lyons W., Working guide to reservoir engineering, Gulf Professional Publishing, 2009, 448 p.

5. Afanas'ev I.S., Sitnikov A.N., Zagurenko A.G., Neftyanoe khozyaystvo - Oil Industry, 2009, no. 11, pp. 24-27.

Key words: hydraulic fracturing, proppant, fracture conductivity, proppant pack.

The article is devoted to an assessment of properties of applied fracturing materials, to the analysis of results and detection of regularities for control of quality of applied materials and to increase efficiency of fracturing in RN-Yuganskneftegaz LLC.

References

1. API RP 61: 1989, Rekomenduemaya metodika otsenki ispytaniy na kratkosrochnuyu provodimost' pachki rasklinivayushchego materiala. Obshchee vvedenie (Recommended practice for evaluating short term proppant pack conductivity), 01.10.1989, 21 p.

2. ISO 13503-5-2006, Promyshlennost' neftyanaya i gazovaya. Rastvory i materialy dlya zakachivaniya skvazhin. Chast' 5. Metodika izmereniya dolgosrochnoy provodimosti rasklinivayushchikh napolniteley. Obshchee vvedenie (Petroleum and natural gas industries. Completion fluids and materials, Part 5: Procedures for measuring the long-term conductivity of proppants), 01.10.2006, 31 p.

3. Cobb S.L., Farrell J.J., Evaluation of long-term proppant stability, SPE 14133.

Key words: filtration, core analysis, water shut-off, oil displacement.

The paper presents the results of water shut-off experiments with core samples of main oilfields of Tomsk region. Experimental investigation of residual resistance and oil displacement was conducted for terrigenious core samples at reservoir conditions. Comparative evaluation efficiency of water shut-off treatment presented.

References

1. Altunina L.K., Kuvshinov V.A., Uvelichenie nefteotdachi plastov kompozitsiyami PAV (The enhanced oil recovery by surfactant composition), Novosibirsk: Nauka Publ., 1995, 198 p.

3. Gazizov A.A., Uvelichenie nefteotdachi neodnorodnykh plastov na pozdney stadii razrabotki (Enhanced oil recovery of heterogeneous reservoirs at a late stage of development), Moscow: Nedra- Biznestsentr Publ., 2002, 639 p.

3. Patent RF no. 2398102, Method for increase of oil recovery of cracked and porous beds with artificially created cracks after hydraulic bed rupture – HBR, Inventors: Sakhipov D.M., Apasov T.K., Sakhipov E.M.

4. Magzyanov I.R., Ismagilov T.A., Zakharov V.P. et al.,  Neftyanoe khozyaystvo – Oil Industry, 2011, no. 6, pp. 25-29.

5. Patent RF no. 2166623, Method of control of producing formation flood front, Inventors: Takhautdinov Sh.F., Muslimov R.Kh., Shakirov A.N., Zheglov M.A., Vakhitov M.R., Dobroskok B.E., Kubareva N.N., Musabirov R.Kh., Ganeeva Z.M.

6. Al-Assi A.A., Willhite G.P., Green D.W., McCool C.S., Formation and propagation of gel aggregates using partially hydrolyzed polyacrylamide and aluminum citrate, SPE 100049, 2006.

Key words: dolomite reservoirs, reservoir stimulation, hydrochloric acid treatment, hydraulic fracturing, secondary opening-out of productive formations, geomechanical properties.

This paper considers the perspective technologies of reservoir development in Eastern Siberia. Brief world experience overview of the similar reservoir development is presented. Paper shows the results of such stimulation methods as hydrochloric acid treatment and proppant hydraulic fracturing of low permeability dolomite formations that are developed by RN-Exploration and penetrated by exploratory wells in Lisovsky and Savostyanov oilfields in Eastern Siberia. Practical recommendations for the further search of such reservoirs stimulation techniques are presented.

References

1. North Robertson field, Permian basin, Texas, U.S.A.: Reservoir evaluation report, C&C Reservoirs, U.S.A., 2005, 35 p.

2. Mayerhofer M., Demetrius S., Griffin L., Bezant R.B., Nevans J., Tiltmeter hydraulic fracture mapping in the North Robertson field, West Texas, SPE 59715.

3. Doublet L.E., An integrated geologic and engineering reservoir characterization of the North Robertson (Clear Fork) Unit, Gaines County, Texas: dissertation, 2001.

4. Bergeron J., Blasingame T., Doublet L., Kelkar M., Freeman G., Callard J., Moore D., Davies D., Vessell R., Pregger B., Dixon B., Bezant B., Application of integrated reservoir management and reservoir characterization: final report, Fossil Energy, Houston, Texas, 2000.

5. Application of integrated reservoir management and reservoir characterization to optimize infill drilling: Quarterly technical progress report, Fina oil and chemical company, 1998.

6. Vincent M.C., Examining our assumptions - Have oversimplifications jeopardized our ability to design optimal fracture treatments, SPE 119143.

7. Vincent M.C., Proving it - A review of 80 published field studies demonstrating the importance of increased fracture conductivity, SPE 77675.

8. Valko P., Norman L., Daneshy A., Petroleum well construction, Chapter 17. Well stimulation, Wiley, 1998, 506 p.

9. Abass H.H., Al-Mulhem A.A., Alqam M.S., Mirajuddin K.R., Acid fracturing or proppant fracturing in carbonate formation, A rock mechanic’s view, SPE 102590.

10. Rotondi M., Pace G., Malonga H., Pounga F., Batmaz T., Ndoassal E., Asibor E., Sobernheim D., Amare P., Application of different stimulation techniques, Multistage proppant and acid fracturing operations offshore Congo, SPE 134905.

11. Pujiastuti S., Wijayanti E., S.N. Hestu, Istono N., Wijaya R., Komalasari N., Proppant hydraulic fracturing in low permeability and low acid-soluble carbonate reservoir: A case history, SPE 130518.

12. Cramer D.D., Reservoir characteristics and stimulation techniques in the Bakken formation and Adjacent beds, Billings Nose area, Williston basin, SPE 15166.

12. Afanas'ev I.S., Nikitin A.N., Latypov I.D., Khaydar A.M., Borisov G.A., Neftyanoe khozyaystvo – Oil Industry, 2009, no. 11, pp. 62–66.

13. Borisov G.A., Latypov I.D, Khaydar A.M., Kuzin I.G., Stepanov M.A., Neftyanoe khozyaystvo – Oil Industry, 2009, no. 9, pp. 98–101.

14. Nikitin A., Yudin A., Latypov I., Haidar A., Borisov G., Hydraulic fracture geometry investigation for successful optimization of fracture modeling and overall development of Jurassic formation in Western Siberia, Proceeds of Asia Pacific Oil and Gas conference & exhibition, 4–6 August 2009, Jakarta, Indonesia, SPE 121888-MS.

15. Razvitie sistem perforatsii dlya vtorichnogo vskrytiya. – URL: http://www.bvt-s.ru/article/index.php?group=111&item=2163 (data obrashcheniya: 15.03.2012).

16. Zhang X., Estimate of permeability of fracture corridors, Networks from data acquisition to reservoir simulations, SPE 131218

Key words: near-wellbore stimulation treatment, buffer pad, mutual solvent, diverter, well completion, selective treatment, well intervention, abnormally low and high formation pressure

The current paper includes the results of the research project aimed to increase the effectiveness of near-wellbore stimulation treatment technologies at abnormally low and high formation pressures in the region of RN-Yuganskneftegaz activity. Potential applicability of different technological solutions is quantified using filtration experiments, the most promising ones are chosen for implementation. The results of pilot field testing conducted as a part of the project approves the efficiency of developed solutions and can help to adjust technologies to the field conditions in the region of RN-Yuganskneftegaz activity.

Key words: wettability, core, oil, water, lab test.

In the present work the results of comprehensive analysis on estimation of wettability using the samples of Jurassic deposition of terrigenous profile of oil deposit are presented. Changes in wettability were estimated by two well-known Tulbovich and Amott methods with extracted samples. The influence of wettability on relative permeability to phase was investigated. As a result of the investigations remarkable change in wettability coefficient has been shown to occur during the first 24 hours. The increase in curing time in stratal conditions does not effect on wettability coefficient and permeability to phase.

References

References

1. Amyx, J.W., Bass, D.M., Whiting, R.L., Petroleum reservoir engineering: Physical properties, New York: McGraw-Hill, 1960.

2. Pirson S. J., Oil reservoir engineering, McGraw-Hill, New York, 1958.

3. Craig F.F., The reservoir engineering aspects of waterflooding, Dallas: SPIofAIME, 1971, 244 p.

4. Anderson W.G., Wettability literature survey, Part 5: The effects of wettability on relative permeability, SPE JPT, 1987, V. 39, pp. 1453-1468.

Key words: oil recovery factor, water control technology, targeted placement of the gel, predictive efficiency, mathematical modeling, hierarchy of models.

This paper presents a methodology for multi-level assessment of the predictive efficiency of Water control technology including engineering calculations, one-dimensional and three-dimensional mathematical modeling. The main approaches based on existing software products and own software products of the implementation methodology are submitted.

References

1. Svidetel'stvo o gosudarstvennoy registratsii programm dlya EVM no. 2011611762 RF (Certificate of state registration of computer programs no. 2011611762 RF).

2. Seright R.S., Placement of gels to modify injection profiles, SPE-17332

3. Sorbie K.S., Seright R.S., Gel placement in geterogeneous systems with crossflows, SPE/DOE-24192.

4. Svidetel'stvo o gosudarstvennoy registratsii programm dlya EVM no. 2007613274 RF (Certificate of state registration of computer programs no. 2007613274 RF).

5. Magzyanov I.R., Ismagilov T.A., Mukhamedshin R.K., Proceedings of the scientific and practical conference ”Sovremennye tekhnologii kapital'nogo remonta skvazhin i povysheniya nefteotdachi plastov. Perspektivy razvitiya” (Modern technologies of well workover and enhanced oil recovery. Prospects of development), Gelendzhik, 25-28.04.06, pp. 84-85.

6. Metodicheskie rekomendatsii po kompleksnoy otsenke effektivnosti meropriyatiy, napravlennykh na uskorenie nauchno-tekhnicheskogo progressa (Guidelines on integrated assessment of the effectiveness of activities aimed at accelerating scientific and technological progress), Collection ”Normativno-metodicheskie materialy po stimulirovaniyu innovatsionnoy deyatel'nosti dlya rukovoditeley predpriyatiy i organizatsiy” (Regulatory and educational materials to promote innovation to business leaders and organizations): edited by Bromberg G.V., Moscow: Informatsionno-izdatel'skiy tsentr Rospatenta, 2002, pp. 173-177.

7. Sereda I. A., Magzyanov I. R., Zakharov V. P., Asmandiyarov R. N.,  Proceedings of the III scientific and practical conference ”Matematicheskoe modelirovanie i komp'yuternye tekhnologii v razrabotke mestorozhdeniy” (Mathematical modeling and computer technologies in field development), Ufa, 13-15.04.10, OOO "RN-UfaNIPIneft'", p. 66.

8. Khasanov M.M, Ismagilov T.A., Mangazeev V.P., Rastrogin A.E., Kol'chugin I.S., Tyan N.S., Neftyanoe khozyaystvo – Oil Industry, 2002, no. 7, pp. 110-112.

9. Zlobin A.A., Yushkov I.R., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2010, no. 12, pp. 46-51.

10. Baykov V.A., Gimazov A.A., Kolonskikh A.V., Makatrov A.K., Politov M.E., Sergeev E.I., Telin A.G., Proceedings of the XI scientific and practical conference ”Geologiya i razrabotka mestorozhdeniy s trudnoizvlekaemymi zapasami” (Geology and development of hard to recover reserves), Gelendzhik, 27-30.09.2011, OAO ”NK ”Rosneft'”, p. 11.

Key words: monitoring, stream lines, allocation factor, injection efficiency, injection to withdrawal ratio.

This article reveals experience of applying stream line analysis for monitoring the development of the Vankorskoye oil-gas-condensate field. Regular stream line model updating is an indispensable condition for efficient applying of stream line analysis. Stream line analysis provides important quantitative information about water injection distribution, which is used for injection efficiency and allocation factors calculation. Then this data is exploited in calculating wells operating practices and planning reservoir pressure maintaining program.

References

1. Sidel'nikov K.A., Vasil'ev V.V., Neftegazovoe delo. Elektronnyy nauchnyy zhurnal - The electronic scientific journal Oil and Gas Business, 2005, no. 2, URL:  http://www.ogbus.ru/authors/Sidelnikov/Sidelnikov_1.pdf.

2. Marco R. Thiele, Darryl H. Fenwick, Rod P. Batycky, Proceedings of 9th International forum on reservoir simulation, December 9th-13th, 2007, Abu Dhabi, United Arab Emirates, URL: http://streamsim.com/technology/publications.

3. Schlumberger FrontSim 2007.1 Technical description.

Key words: well workover, squeeze job.

This paper is related to the technology of insulation of extended 146 mm production casing defects by mounting of additional 120 mm casing in RN-Purneftegaz LLC. The results of field operations are presented.

References

1. Umetbaev V.G., Merzlyakov V.F., Volochkov N.S., Kapital'nyy remont skvazhin. Izolyatsionnye raboty (Workover. Insulation works), Ufa: Publ. of ANK ”Bashneft'”, 2000, 424 p.

2. Presnyakov A.Yu., Mikhaylov A.G., Alikin E.S., Miller A.V., Enikeev V.N., Tashbulatov V.D., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2009, no. 9, pp.29-33.

Key words: the Azov Sea; coastal zone; monitoring; satellite image; engineering researches.

Efficiency of application of satellite pictures is shown at carrying out of engineering prospecting works. Questions, analyzed in this work have high importance in scientific, ecological and economical aspects.

References

1. Artyukhin Yu.V., Fedorova S.I., Artyukhina O.I., Zashchita okruzhayushchey sredy v neftegazovom komplekse, 2006, no. 9, pp. 39–46.

2. Kurbatova I.E., Issledovanie Zemli iz kosmosa, 2000, no. 3, pp. 34–56.

Key words: demulsifier, surfactant, water-oil emulsions, qualitative status of emulsion, interface tension, intermediate layer, specific consumption.

The authors consider the experience in abandoning the lengthy shut-downs in oil treatment processes while processing the heavy asphalt/wax content oil at Yakushkinskaya Oil Treatment Plant.

They have discovered the objects with non-effective demulsifier usage as well as the objects where these demulsifiers have been used in excess (using the methods of microscopy, of measuring interface and surface tensions in water-oil systems, of thermal and chemical studies, etc.).

Recommendations on the most effective demulsifiers are made. Finally due to the use of CTX-5 effective demulsifier and the overall reduction in its demulsifier application they have stabilized the process oil treatment at this process facility.

References

1. Smirnov Yu.S., Kalinina O.S., Problemy snizheniya kapital'nykh i ekspluatatsionnykh zatrat na obustroystvo ob"ektov neftegazodobychi (Problems of reduce the capital and operating costs for oil and gas production facilities constructio), Proceedings of the Giprovostokneft Institute, Kuybyshev, 1988, pp. 55-63.

2. Tronov V.P., Promyslovaya podgotovka nefti (Field processing of oil), Kazan': FEN Publ., 2000, 230 p.

3. Borisov S.I., Kalinina O.S., Meloshenko N.P., Sorokin V.V., Isavkin V.A., Neftyanoe khozyaystvo – Oil Industry, 2003, no. 1, pp. 76-78.

Key words: litho-petrophysical rock types, fuzzy logic tree, automation of typing.

Different sedimentary rocks of West Siberia basin are used for analysis in this study. The comparison of results of automatic rock classification are traditional rock typing demonstrate the potential of proposed technique.

References

1. Avilov A.V., Borzykh V.E., Vestnik kibernetiki, 2012, no. 11, URL: http://www.ipdn.ru/rics/vk/_private/vk11/122-128.pdf.

2. Efimov V.A., Kostenevich K.A., Mal'shakov A.V., et al., Aktual'nye voprosy petrofiziki slozhnopostroennykh kollektorov (Topical issues of complicated reservoir petrophysics), Krasnodar: Prosveshchenie-Yug Publ., 2010, 306 p.

3. Korovina T.A., Kropotova E.P., Puti realizatsii neftegazovogo potentsiala KhMAO (Collected papers “Ways to implement oil and gas potential of the Khanty-Mansiysk Autonomous Okrug”), III nauchno-prakticheskaya konferentsiya (3rd Scientific Conference), Khanty-Mansiysk: Putived" Publ., 2000, pp. 346-351.

4. Fedortsov I.V., Sedimentatsionnye kriterii razmeshcheniya zalezhey nefti i gaza v yurskikh i nizhnemelovykh produktivnykh kompleksakh Surgutskogo svoda Zapadnoy Sibiri (Depositional location criteria of oil and gas in the Jurassic and Lower Cretaceous productive complexes of Surgut arch of Western Siberia), Thesis of the candidate of geology and mineralogy, Tyumen, 2007.

5. Derev'ya klassifikatsii. Elektronnyy uchebnik po statistike (Classification trees. Electronic textbook on statistics), StatSoft, Moskva, 2001, URL: http://www.statsoft.ru/home/textbook/modules/stclatre.html.

Key words: Riphean fractured reservoirs, IFP Pre-stack Constrained Stratigraphic Inversion, coherence volume, synergetics, diffractors imaging, fracture mapping.

The authors propose a technology for geological modeling of fractured carbonate reservoirs. The technology is based on integrated interpretation of 3D seismic reflected and scattered fields and the borehole information.

References

1. Kharakhinov V.V., Shlenkin S.I., Neftegazonosnost' dokembriyskikh tolshch Vostochnoy Sibiri na primere Kuyumbinsko-Yurubcheno-Tokhomskogo areala neftegazonakopleniya (Petroleum potential of the Precambrian strata of Eastern Siberia, on the example of Kuyumbinsko-Yurubcheno-Tokhomskoye the area of oil and gas accumulation), Moscow: Nauchnyy mir Publ., 2011, 420 p.

2. Bagrintseva K.I., Usloviya formirovaniya i svoystva karbonatnykh kollektorov nefti i gaza (Conditions of formation and properties of carbonate reservoirs of oil and gas), Moscow: Publishing RSHU, 1999, pp. 201-222.

3. Masyukov A.V., Masyukov V.V., Kozlova A.N., Akimov T.V., Proceedings of the 13th Scientific and Practical Conference “Geomodel' 2011” (Geomodel 2011), Gelendzhik.

4. Shlenkin S.I. , Masyukov A.V., Masyukov V.V., Kozlova A.N., Tekhnologii seysmorazvedki - Seismic Technologies, 2012, no. 2, pp. 5-11.

5. Shlionkin S.I., Masjukov A.V. and Masjukov V.V., Proceedings of the 10th International Conference on Geoinformatics, Kyev, Ukraine, 2011.

6. Shlionkin S.I., Masjukov A.V., Masjukov V.V., Yurchenko O.S., Seismic data discontinuity computation for fault, EAGE Conference St-Petersburg, 2008 (Expanded abstracts, A045).

7. Kuznetsov O.L., Chirkin I.A., Kur'yanov Yu.A., Seysmoakustika poristykh i treshchinovatykh geologicheskikh sred (Seismoacoustics of porous and fractured geological media), V. 3: Novye tekhnologii i reshenie prikladnykh zadach (New technologies and applications solution), Moscow: OOO “TsITvP” Publ., 2007.

Key words: electrical resistivity, the reservoir, the mineralization, porosity parameter, saturation parameter, water saturation.

The correlation of the electrical resistivity with a factor of porosity by tested strata intervals of one of the fields of the Middle Priobye is given. Petrodynamic method of determining the water electrical resistivity is considered. It is noted, that its use will significantly improve the accuracy of reserves estimation.

References

1. Dakhnov V.N., Interpretatsiya rezul'tatov geofizicheskikh issledovaniy skvazhin (Interpretation of geophysical well logging), Moscow: Nedra Publ., 1982, 448 p.

Key words: well completion, reservoir properties, wall packing screen, pay zone, shock-wave stimulation.

The paper considers the method for preventing skin damage and improving zonal isolation quality when completing wells in harsh geologic environment. The method is realized at the completion stage before production casing string is run and involves controlled wall packing with PAA clay suspension and shock-wave stimulation with the following restoration of reservoir properties in the near-wellbore formation. Results of the analysis of the improved completion technology are presented; conclusions and practical recommendations are given.

References

1. Patent no. 2362793 RF, MPK8 S 09 K 8/08, Burovoy rastvor (Drilling agent), Inventors: Khuzin R.R., Ibatullin R.R., Khisamov R.S., Timirov V.S., Mesyatsev V.I., Vakula A.Ya., Deryabin V.V., Rylov N.I.

Key words: drilling detergent, PDC bits, bit-balling treatment, hydrophobization, thinner.

Key words: oil recovery factor, hard to recover reserves, design project, new technologies.

The problems on enhanced oil recovery in fields of Russia are considered. The dynamics of the average producible oil recovery factor taking into account commercial development of fields and increasing the share of hard-to-recover reserves is given. It is shown that the carrying out of geological and technical measures, the use of enhanced oil recovery and stimulation oil production methods contribute to producible oil index growth, but require significant costs. The necessity of government regulation and promotion of activities, aimed at producible oil index increasing, is marked.

Key words: hard to recover oil reserves, EOR, WAG, production well, associated gas.

At the present time the subsoil users solve an important task of associated gas utilization. Utilization of associated gas and all of its components have to be designed according to high technologically development of oil deposits. In this paper WAG as the one of the methods of associated gas rational use is considered. Simulation of WAG for heavy oil deposit and assessment the economic efficiency are carried out.

References

1. Petrakov A.M., Nauchno-metodicheskie osnovy primeneniya tekhnologiy adresnogo vozdeystviya dlya povysheniya effektivnosti razrabotki trudnoizvlekaemykh zapasov nefti (na primere mestorozhdeniy Zapadnoy Sibiri) (Scientific and methodological basis for the use technology of address impacts to increasing the efficiency of stranded oil development (for example, fields in Western Siberia)): Thesis of doctor of technical sciences, Moscow, 2010.

2. Radaev A.V., Batrakov N.R., Kondrat'eva I.A. et al., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 8, pp. 110-111.

3. Lisovskiy N.N. Khalimov E.M., Vestnik TsKR Rosnedra, 2009, no. 6, pp. 33-35.

4. Rogachev M.K., Novye khimicheskie reagenty i sostavy tekhnologicheskikh zhidkostey dlya dobychi nefti: proizvodstvenno-prakticheskoe izdanie (New chemicals and compounds of process fluids for oil extraction: production and practical publication), Ufa: Gilem Publ., 1999, 75 p.

5. Raschet vodogazovogo vozdeystviya na opytnom uchastke Moskud'inskogo mestorozhdeniya (Calculation of WAG on the experimental plot of Moskudinskoe field), Report of OAO “Tsentral'naya geofizicheskaya ekspeditsiya”, Compiled by: Klepatskiy A.R., Moscow, 2006.

Key words: EOR, electrothermal complex, down-hole electrical steam generator, release of a pollutant, commertial effitiency.

The paper provides an analysis of the prospects for downhole electrothermal technics for the extraction of heavy oil. Performed the calculation of emissions for conventional technology, cost efficiency of the proposed method of enhanced oil recovery.

References

1. Kontseptsiya gosudarstvennogo upravleniya ratsional'nym ispol'zovaniem zapasov nefti (The concept of government management of rational use of oil reserves), Moscow: Publ. of OAO “VNIIneft'”, 2005, 121 p.

2. Zagrivnyy E.A. , Kozyaruk A.E. , Malarev V.I. , Mel'nikova E.E., Elektrotekhnika - Russian Electrical Engineering, 2010, no. 1, pp. 50-56.

3. Patent no. 2169830 RF, MPK E21B36/04, Elektronagrevatel'noe ustroystvo teplovoy obrabotki prizaboynoy zony skvazhiny (Electric heater for thermal treatment of face zone of wells), Inventors: Zagrivnyy E.A., Sirotskiy A.N.

4. Zagrivnyy E.A., Kozyaruk A.E., Bataev S.N., Elektrotekhnika - Russian Electrical Engineering, 2003, no. 5, pp. 61–69.

5. URL: http://agiks.ru/data/gosdoklad/gd2009/h2_4.htm

Key words: horizontal well, flexible oil-well tubing, geophysical combo connector.

The experience of down-hole tool layouts at wells-logging measurements using coiled tubing units is considered. Basic requirements for flexible oil-well tubing connectors are given.

Key words: energy saving, heat insulation, delivery of heat-transfer medium with minimum losses, SOVBI-T foam concrete advantages, surveillance.

This paper considers the issues of practical application and comparison of operational characteristics of heat insulation for pipelines with fluids temperature 200°C, including basalt fiber-based materials, SOVBI-T foam concrete and two-layer heat insulation. Advantages and deficiencies of the said materials are discussed in some detail.

References

1. Mironova T.F., Teploenergoeffektivnye tekhnologii, 2011, no. 1/2 (61/62).

2. Dement'ev A.G., Penopoliuretan, 2000, no. 2.

Key words: production well, the complications in the extraction of oil, technology of gas utilization, utilization of associated petroleum gas.

Due to rising energy prices and the gradual depletion of existing recourse there is the question of reducing the loss of energy and efficient way to use existing resources. Associated petroleum gas (APG) - is a by-product of oil production, which is a valuable raw material for the chemical and energy industries. There are a lot of interrelated reasons for associated gas is not fully utilized in the oil fields in Russia, such as technological, economic and environmental reasons. Positive economic effect can be achieved by the accomplishment of the target (95% set by the Government of Russia) as a result, a reduce of penalties for emissions, and by using of gas as an energy source and chemical feedstock.

References

1. Malofeev V.V., Neftepromyslovoe delo, 2012, no. 8, pp. 42-47.

2. Stan kaplan power plants: Characteristics and costs, CRS Report for congress, November 13, 2008.

3. Sokolov S.M., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 4, pp. 108-111.

4. Mel'nik G.V., Dvigatelestroenie, 2009, no. 2, pp. 35-40.

5. Lebedev A.S., Gazoturbinnye tekhnologii – Gas Turbo Technology, 2008, no. 8, pp. 6-8.

6. Mantasheva E.B., Neft', gaz i biznes, 2011, no. 9, pp. 3-6.

7. Suslov V.I., Burenie i neft', 2010, no. 5, pp. 40 – 42.

8. Borodin A.V., Neftepererabotka i neftekhimiya. Nauchno-tekhnicheskie dostizheniya i peredovoy opyt, 2007, no. 11, pp. 27-30.

9. Kostin A.A., Populyarnaya neftekhimiya (Popular petrochemistry), Moscow: Eksmo Publ., 2011, 96 p.

10. Drozdov A.N., Territoriya Neftegaz, 2006, no. 2, pp. 54-59.

11. Nazmiev I.M., Vestnik TsKR Rosnedra, 2010, no. 2, pp. 48-58.

12. Starinskaya G., Oil and Gas Eurasia, 2012, no. 6.

13. Kutsak M.Yu., URL: http://cryogastech.ru/upload/iblock/85a/paper1.pdf.

Key words: associated petroleum gas (APG) disposition, Gas Program, small fields, mature fields, modification and technical upgrading.

Key words: complex 3D projecting, oil and gas-field construction, software, 3D model, plans.

In this paper the results of use complex 3D projecting in the oil and gas-field construction projects have been presented. Complex 3D model of building site has been constructed. The main plans and specifications have been formed. Initial data for calculations and contiguous problems have been received.

Key words: oil, hydrogen sulfide, mercaptans, ammonia-catalytic oxidation.

Pilot-commercial tests of modified DMC-1MA plant were carried out for the aim of deep oil treating to hydrogen sulfide content below 10 ppm. Disadvantages of using chemical reagents and purging with a hydrocarbon gas as compared to ammonia-catalytic oxidational method are shown.

References

1. Garifullin R.G., Mazgarov A.M., Khrushcheva I.K., et al., Tekhnologii nefti i gaza – Science and Technology of Hydrocarbons, 2007, no. 1, pp. 11-18.

2. Aslyamov I.R., Kopylov A.Yu., Ayupova N.R., et al., Neftyanoe khozyaystvo – Oil Industry, 2008, no. 12, pp. 93-95.

3. Patent no. 2272065 RF, Sposob ochistki tyazheloy nefti ot serovodoroda (The purification method of heavy oil from the hydrogen sulfide), authors: Mazgarov A.Kh.,Garifullin R.G., Shakirov F.G., Khrushcheva I.K., Vil'danov A.F., Ayupova N.R.

4. Patent no. 2269566 RF, Sposob podgotovki serovodorodsoderzhashchey nefti (The method of preparing hydrogen sulfide oil),authors: Mazgarov A.Kh.,Garifullin R.G., Vil'danov A.F., Salin V.N., Shakirov F.G.

5. Patent no. 2213764 RF, Sposob dezodoriruyushchey ochistki nefti i gazokondensata ot serovodoroda i nizkomolekulyarnykh merkaptanov (Method of deodorizing treatment of oil and gas condensate from hydrogen sulfide and mercaptans of low molecular weight), authors: Shakirov F.G., Mazgarov A.Kh., Vil'danov A.F.

6. Patent no. 2114896 RF, Sposob dezodoriruyushchey ochistki nefti i gazokondensata ot serovodoroda i legkikh merkaptanov (Method of deodorizing treatment of oil and gas condensate from hydrogen sulphide and light mercaptans), authors: Mazgarov A.Kh., Vil'danov A.F., Shakirov F.G., Khrushcheva I.K.

7. Patent no. 2109033 RF, Sposob ochistki nefti i gazokondensata ot serovodoroda (The purification process of crude oil and condensate from hydrogen sulfide), authors: Shakirov F.G., Mazgarov A.Kh., Vil'danov A.F., Khrushcheva I.K.

8. Shatalov A.N., et al., Tekhnologii nefti i gaza – Science and Technology of Hydrocarbons, 2010, no. 4, pp. 19-23.

Key words: oil recovery factor (ORF), the methods of enhanced oil recovery (EOR), CO₂ injection, additional oil production.

Various methods of enhanced oil recovery in the U.S. fields are considered. It is shown that injection of CO₂ is the most common and effective method, since the largest amount of additional oil production is achieved owing to it. The data on the additional oil production in the U.S. due to a miscible and immiscible displacement at CO₂ injection are given. The further increase of oil production by this method is forecasted.

References

1. Vello Kuuskraa, QC updates carbon dioxide projects on OGL’s enhanced oil recovery survey, Oil and Gas Journal, 2012, July 2.

2. DOE sees vast energy resource in Permian basin residual oil zones, Oil and Gas Journal, 2012, August 6.

3. URL: http://www.trust.org/alertnet/news/column-us-bets-on-producing-oil-with-captured-co2-john-kemp/

4. URL: http://en.wikipedia.org/Enhanced_oil_recovery

5. URL: http://www.energyindustryphotos.com/what_is_enhanced_recovery_of_oil.htm

6. URL: http://www.fe.doe.gov/news/techlines/2012/2014-Technology_to_Boost_Oil_Recovery.html

7. URL: http://fossil.energy.gov/programs/oilgas/eor/

8. URL: http://www.wri.org/publication/content/8355