The history of the Bashkir oil is reviewed – from the first prospecting and exploration activities in the areas with oil seeps to drilling discovery wells near Ishimbay, which struck commercial oil accumulations, and later on to discovering oil in the Devonian sandstones on the giant Tuymazinskoe field and in the Lower Carboniferous sandstones of the giant Arlanskoe field. The consecutive discoveries contributed to the present-day hydrocarbon resource base of Bashkortostan, which secures a high level of economic maturity in the Republic.

Key words: History of the Bashkir oil, oil and gas fields; economics of the Republic of Bashkortostan.

References

1. Prokopov V.V., Informacionnyj Vestnik NGDU “Ishimbajneft” (Information bulletin of Oil and Gas Production Department "Ishimbayneft"), 1997, no. 6.

2. Rahmankulov D.L. U istokov sozdanija neftjanogo dela Uralo-Povolzh'ja (At the origins of the oil business of the Ural-Volga region), Moscow: Inter Publ., 2008, pp. 304-343.

The theory and practice of technical and commercial feasibility studies of exploration assets applied in Bashneft JSOC are described. It is given the determination of COS (‘chance of success’ – probability of a discovery) evaluated by assigning values to a set of geological factors and establishing their relationship in the case of multiple target formations or prospects. Monte Carlo distributions of the input parameters for volumetric calculations and recoverable reserves are shown. Cases for calculating the production profiles and other performance parameters, as well as the probabalistic determination of the number of development wells and flow rate range of values are considered.

Key words: technical and commercial study of exploration assets, probabilistic reserves evaluation, Monte-Carlo method, probability distribution, chance of success, probability of success, Ores software.

Fractures density and orientation forecast is a key issue for planning and analysis of fractured reservoirs development. A fracture model considers direct and indirect measurements. When a lack of data as evident to build such a model, only physical constrained approach could be helpful to make headway. This paper emphasizes the stress calculation of a geological body in large scale. Density and orientation of a fracture network are predicted on the basis of volume distribution of critical stress zones.

Ключевыеслова: fracturing, carbonates, stress zones, curvature.

References

1. Sedov L.I., Mekhanika sploshnoy sredy (Continuum mechanics), V. 2, Moscow: Nauka Publ., 1970, 568 p.

2. Knott J.F., Fundamentals of fracture mechanics, London, Butterworth, 1973.

3. Filin A.P., Prikladnaya mekhanika tverdogo deformiruemogo tela (Applied Mechanics of solid deformable body), V. 1, Moscow: Nauka Publ., 1975, 832 p.

The peculiarities of voids in productive Devonian and Carbonic carbonate deposits of oil fields in Bashkortostan are discussed as identified by petrographic studies of core material and large thin sections. The key role of primary and secondary pores and vugs is revealed, fracture microporosity contributes to fluid flowing through voids. Secondary processes significantly influence the porosity and permeability of the investigated reservoir rocks. Fractures play a major role in the geology of Famennian and Baskirian reservoirs.

Key words: carbonate reservoirs,petrography, porosity, permeability, voids.

References

1. Gmid L.P., Levi S.Sh., Trudy VNIGRI, 1972, V. 313, P. 176.

2. Metodika izucheniya treshchinovatosti gornykh porod i treshchinnykh kollektorov nefti i gaza (Method for studying the fracture of rocks and fractured oil and gas reservoirs): edited by E.M. Smekhov, Leningrad: Nedra publ., 1969, 129 p.

3. Vissarionova A.Ya., Tyurikhin A.M., Trudy UfNII, 1963, V. IX-X, pp. 35-49.

4. Tyurikhin A.M., Trudy VNIGRI, 1964, V. 228, pp. 138-154.

The paper presents a case study of facies and lithology heterogeneity and its correlation with the porosity of the Upper Silurian and Lower Devonian carbonate reservoirs on Roman Trebs oil field. The described carbonate ramp facies model shows a good correlation with the observed changes in the porosity values for the studied reservoirs. The results obtained prove the effectiveness and forecasting accuracy of the lithology and facies core analysis technique for evaluating the reservoir quality of carbonate sediments.

Key words: Roman Trebs oil field, carbonate deposits, ramp model of sedimentation, facies types of deposits, porosity.

References

1. Kaufman J., Jameson J., Sequence stratigraphy, facies, and reservoir quality of lower Devonian carbonates in Roman Trebs field, Timan-Pechora basin, C.I.S, SEPM Spetial publication, 2002, no. 74, pp. 43-68.

When petrophysical model is created the one of the main relevance criteria is the close proximity of the estimates via well-log interpretation with the results of laboratory core studies. In the standard situation, intervals of coring are correlated with those of well-logs only conditionally. The paper discusses problems of matching core-log dataversus well-log one in the process of creating petrophysical model, special attention being given to the situation with low core recovery.

Key words: multicomponent structure of rocks solid phase, correlation, laboratory core studies, well-log interpretation.

References

1. Enikeev B.N., Ellanskiy M.M., Byulleten' Moskovskogo obshchestva ispytateley prirody. Otdel geologicheskiy, 1974, V. XLIX (1), pp. 159-160.

2. Enikeev B.N., Nastroyka i reshenie obratnoy petrofizicheskoy zadachi na osnove ispol'zovaniya sochetaniya parametricheskikh i neparametricheskikh vzaimosvyazey (Setting up and solving the inverse petrophysical problem using a combination of parametric and nonparametric relationship), SEG-2003 Moscow, 2003.

3. Dzhevanshir R.D., Brzhestovskaya T.S., Geologiya nefti i gaza - The journal Oil and Gas Geology, 1992, no. 8.

4. Kozhevnikov D.A., Geofizika, 2001, no. 4, pp. 20-30.

5. Dobrynin V.M., Vendel'shteyn B.Yu., Rezvanov R.A., Afrikyan A.N., Geofizicheskie issledovaniya skvazhin (Well logging): edited by V.M. Dobrynin, N.E. Lazutkina, Moscow: Neft' i gaz Publ., 2004, 400 p.

The paper reviews the problem of lost circulation control and requirements for reliable operations for plugging thief zones in drilling. The results are given for laboratory and field testing of foam-cement based light-weight plugging material.

Key words: cement composition, plugging thief zones, foam-cement.

References

1. Samsykin A.V., Yarmukhametov I.I., Sharova O.Yu., et al., Kompleksnye meropriyatiya po profilaktike i izolyatsii zon oslozhneniy v protsesse bureniya skvazhin (Comprehensive activities for the prevention and isolation zones of complications in the process of drilling wells), Innovatsionnye resheniya v stroitel'stve skvazhin: Vseros. nauchno-tekhnicheskaya konf. s mezhdunarodnym uchastiem, posvyashchennaya 100-letiyu akad. Trofimuka A.A., Ufa, 2011, pp. 46-48.

2. Krylov V.I., Dzhangirov S.S., Sukhenko N.I., et al., Izolyatsiya zon pogloshcheniy s primeneniem napolniteley (Isolation lost-circulation zone with fillers), Moscow: VNIIOENG Publ., 1981, 47 p.

3. Bulatov A.I., Sukhenko N.I. Izolyatsionnye raboty pri provodke skvazhin v usloviyakh pogloshcheniya burovogo rastvora (Insulation works with the wiring wells in the work with the wiring wells in the drilling mud losses conditions), Moscow: VNIIOENG Publ., 1983, 72 p.

The article is devoted to development and realization of science-based algorithms for accurate and fast calculation of drilling parameters during designing of well construction. The algorithm-based software allows issuing of quantitatively adjusted recommendations for design of each individual well according to its geological and mining conditions, and provides for the use of a PC as well as a multiprocessor system. This allows working with this program for both engineers in research and design institutes, and drillers in the field conditions. Recommendations issued by this software allow to reduce time and material costs on trouble elimination, drilling fluid treatment and drilling equipment rent, and this in its turn can lead to increased technical and economic indices of well construction.

Key words: software, database, neural network, parallel computations, mathematical model.

References

1. Kazakova D.S., Nurislamova L.F., Yunusov A.A., Lind Yu.B., Komp'yuternoe modelirovanie pri stroitel'stve neftyanykh i gazovykh skvazhin (Computer simulation of the construction of oil and gas wells), XVIII Vserossiyskaya nauchno-prakticheskaya konferentsiya «Innovatsii. Intellekt. Kul'tura» (XVIII All-Russia scientific-practical conference "Innovations. Intellect. Culture"), Tyumen': BIK TyumGNGU Publ., 2010, pp. 83-86.

2. Lind Yu.B., Starkov S.V., Zayrullina E.I., Minikeeva L.R., Informatsionnye tekhnologii proektirovaniya stroitel'stva neftegazovykh skvazhin (Information technology of designing oil and gas wells), XI Vserossiyskaya konferentsiya "Vysokoproizvoditel'nye vychisleniya na klasternykh sistemakh" (XI All-Russian Conference "High-Performance Computing by Cluster Systems"), Nizhniy Novgorod: NNGU Publ., 2011, pp. 123-124.

3. Kabirova A.R., Lind Yu.B., Gubaydullin I.M., Mulyukov R.A., Sistemy upravleniya i informatsionnye tekhnologii, 2011, no. 1(43), pp. 77-81.

The paper describes the experience of wide implementation of fracturing on oil-fields of Bashkortostan. Realized systems approach of fracturing business-process allowed to identify and reduce the risks related with uncertainties in planning and carrying out frac-jobs. Main results of fracturing are represented.

Comparison of different possible further development variants for typical small field with several coincident reservoirs, the example of Kipchakskoye field, is presented. Economical effect of simultaneous-separate production with help of dual completion technologies is proved.

Key word: multilayer field, dual completion technology, economical effect of simultaneous-separate production, Kipchakskoye field.

References

1. Kazantsev I.Yu., Gordeev A.O., Vakhrusheva I.A., et al., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 2, pp. 44-47.

2. Evdokimov A.M., Taipova V.A., Karpova O.M., et al., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 3, pp. 89-91.

3. Valeev M.D., Bortnikov A.E., Popova L.V., et al., Neftyanoe khozyaystvo – Oil Industry, 2011, no.8, pp. 64-66.

4. Tavluy I.V., Gavrilyuk Yu.A., Agafonov A.A., et al., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 6, pp. 48-51.

Based on experience with field research methodology is proposed for determining the current values of the gas factors of oil fields by measuring flow rates of oil and gas of reference wells. Set out the criteria for selecting the reference wells, the criteria of reliability of the results of field measurements of gas-oil ratio. It is noted that measurements of gas content in oil well production must take into account the gas content of produced water, primarily in the fields of the late and final stages of development.

Key words: oil, produced water, gas-oil ratio, gas factor, residual gas-oil ratio, utility meter, mathematical statistics, reference wells network.

References

1. Sheykh-Ali D.M., Izmenenie svoystv plastovoy nefti i gazovogo faktora v protsesse ekspluatatsii neftyanykh mestorozhdeniy (Changing the properties of produced oil and gas factor in the exploitation of oil fields), Ufa: BashNIPIneft' Publ., 2001, 140 p.

Bashneft JSOC has successfully implemented multilateral horizontal drilling on Lemezinskoye oil field. The target formation is the Artinskian-Sakmarian carbonates of the Lower Permian. Based on the modeling results the open-hole multilateral horizontal completions were recommended as a development option, assuming the potential to achieve the approved recovery factor and secure the maximum well productivity. Two multilaterals drilled in 2011 supported the choice of the development concept and proved to be highly efficient and productive. The achieved productivity index was significantly higher than that for analogue wells.

Key words: carbonate reservoirs, drilling, horizontal wells, multilateral wells, open-hole, well productivity, modeling.

The article presents the experience of using compositional modeling in the conditions of lack of information and large uncertainty in the properties forecast. Several examples of the petroleum reservoirs with different history have been demonstrated.

Key words: reservoir fluid, sampling, downhole sample, compositional model, fluid simulator.

References

1. Whitson C.H., Brule M.R., Phase behavior, Richardson, SPE, 2000.

2. Brusilovskiy A.I., Fazovye prevrashcheniya pri razrabotke mestorozhdeniy nefti i gaza (Phase transformations in the development of oil and gas fields), Moscow: Graal' Publ., 2002.

3. Khaznaferov A.I., Issledovanie plastovykh neftey (Research of oil in place), Moscow: Nedra Publ., 1987.

4. Sorokin A.V., Sorokin V.D., Issledovanie protsessa izmenichivosti fiziko-khimicheskikh svoystv plastovoy nefti pri razrabotke mestorozhdeniy Zapadnoy Sibiri (Investigation of the variability physico-chemical properties process of situ oil during oil fields development in Western Siberia), Tyumen': Vektor Buk Publ., 2004.

5. Towler B.F. Reservoir engeneering aspects of bottomhole sampling of saturated oils for PVT analysis, SPE 19438, 1990.

6. Kool H. et al., Testing of gas condensate reservoir – Sampling, test design and analysis, The SPE Asia Pacific Oil and Gas Conference and Exhibition, SPE 68668.

The article presents the experience of using compositional modeling in the conditions of lack of information and large uncertainty in the properties forecast. Several examples of the petroleum reservoirs with different history have been demonstrated.

Key words: reservoir fluid, sampling, downhole sample, compositional model, fluid simulator.

References

1. Whitson C.H., Brule M.R., Phase behavior, Richardson, SPE, 2000.

2. Brusilovskiy A.I., Fazovye prevrashcheniya pri razrabotke mestorozhdeniy nefti i gaza (Phase transformations in the development of oil and gas fields), Moscow: Graal' Publ., 2002.

3. Khaznaferov A.I., Issledovanie plastovykh neftey (Research of oil in place), Moscow: Nedra Publ., 1987.

4. Sorokin A.V., Sorokin V.D., Issledovanie protsessa izmenichivosti fiziko-khimicheskikh svoystv plastovoy nefti pri razrabotke mestorozhdeniy Zapadnoy Sibiri (Investigation of the variability physico-chemical properties process of situ oil during oil fields development in Western Siberia), Tyumen': Vektor Buk Publ., 2004.

5. Towler B.F. Reservoir engeneering aspects of bottomhole sampling of saturated oils for PVT analysis, SPE 19438, 1990.

6. Kool H. et al., Testing of gas condensate reservoir – Sampling, test design and analysis, The SPE Asia Pacific Oil and Gas Conference and Exhibition, SPE 68668.

The artcle describes current experience building technological scheme of reservoir pressure maintenance system under WAG conditions. Special attention has been given to the possible operational risks and stability of the system.

Key words: associated gas, reservoir pressure maintenance system, simulation, multiphase flow, water-alternated-gas injection (WAG).

References

1. Redman R.S., Horizontal miscible water alternating gas development of the Alpine Field, Alaska, The SPE Western Regional, AAPG Pacific Section Joint Meeting, 2002, SPE 76819.

2. Shi W., Corwith J., Bouchard A., Bone R., Reinbold E., Kuparuk MWAG project after 20 years, The 2008 SPE/DOE Improved Oil Recovery Symposium, 2008, SPE113933.

3. Awan A.R., Teigland R., Kleppe J., EOR survey in the North Sea, The 2006 SPE/DOE Symposium on Improved Oil Recovery, 2006, SPE 99546.

4. Liu H., Pipeline engineering, Boca Raton: Lewis Publishers, 2003.

5. Parisher R.A., Rhea R.A., Pipe drafting and design, Boston: Gulf Professional Publishers, 2002.

6. OLGA 6 User Manual, URL: www.sptgroup.com.

7. Brill J.P., Mukherjee H., Multiphase flow in wells, SPE Monograph Series V. 17, 1999, 164 p.

8. Chukhareva N.V., Opredelenie usloviy gidratoobrazovaniya pri transporte gaza v zadannykh tekhnologicheskikh usloviyakh ekspluatatsii promyslovykh truboprovodov (Determination of the conditions of hydrate formation during transport of the gas in the given technological conditions of field pipelines), Tomsk: Tomsk State University Publ., 2010, 30 p.

The paper considers the experience of implementing shared-separated production from several reservoirs in a single well, as well as method of candidate selection at Bashneft oil fields.

Key words: shared-separated facilities for oil production, candidate selection, equipment selection, experience.

References

1. Diyashev R.N., Mekhanizmy negativnykh posledstviy sovmestnoy razrabotki neftyanykh plastov (Mechanisms of the negative effects of joint development of oil reservoirs), Kazan': Kazan University Publ., 2004, 192 p.

2. Sakhnov R.V., Grekhov I.V., Nikolaev O.S., Inzhenernaya praktika - Oilfield Engineering, 2011, no. 3, pp. 20-23.

3. Garifov K.M., Inzhenernaya praktika - Oilfield Engineering, 2011, no. 3, pp. 4-12.

4. Semenov V.N., Inzhenernaya praktika - Oilfield Engineering, 2011, no. 3, pp. 64-68.

New technologies and materials introduction in Bashneft JSOC has led to significant advances in the field of corrosion protection of oilfield equipment. The experience of field pipelines corrosion protection is considered. It is shown that the used technologies allow to improve the reliability of operation of oilfield facilities, reduce the loss of the output, improve the safety of technological processes execution.

Recently imposed demand on the petroleum solution gas utilization redefines our apprehension towards technological effectiveness of oil and gas treatment facilities. Particular situation arises when large volumes of solution gas recycles in the system as the result of gas injection program.

Ключевыеслова: associated gas, gas utilization, gas injection, oil and gas treatment facilities.

References

1. Brusilovskiy A.I., Fazovye prevrashcheniya pri razrabotke mestorozhdeniy nefti i gaza (Phase transformations in the development of oil and gas fields), Moscow: Graal' Publ., 2002.

2. Pedersen K. Sch., Christensen P.L. Phase behavior of petroleum reservoir fluid, Boca Raton: Taylor & Francis, 2007.

3. Peng D.Y., Robinson D.B., A new-constant equation of state, Ind.&Eng.Chem, 1976, V. 15, no. 1, pp. 59.

4. Michelsen M.L., State function based flash specifications, Fluid Phase Equilibria, 1999, V. 158-160, pp. 617-626.

5. Whitson C.H., Michelsen M.L., The negative flash, Fluid Phase Equilibria, 1989, V. 53, pp. 51-71.

6. Entsiklopediya gazovoy promyshlennosti (Encyclopedia of the gas industry): edited by Basniev K.S., Moscow: AO «Tvant» Publ., 1994, 884 p.

The paper describes the objectives, principles and elements of the aquatic environment monitoring system at the mature Arlanskoye oil field. The parameters for the main sources of contamination and changes in the properties and chemistry of fresh surface and subterranean waters are given according to the data from the actual observation system. Based on the analysis of the results the conclusions are drawn as to the efficiency of the implemented measures and procedures and continuous improvement in the quality of the water bodies on the territory of the oil field under discussion.

The paper describes oil sludge disposal solutions used at the specialized technical site within Mancharovo Oil-Gathering Station, Bashneft-Dobycha, LLC, located in Chekmagushevskiy region, the Republic of Bashkortostan. The laboratory and pilot field testing results are given for the new biological preparation Consortium for treating oil-contaminated wastes. The research data indicates that the developed formulation allows a higher degree of oil-contaminated wastes treatment in one vegetation period, with the biodegradation level exceeding 97 %.

Fractal pulsing model of geological and geophysical fields of hydrocarbon fields makes fundamental changes in the technology of their exploration, prospecting and development. The main reason for the fractal nature of the oil and gas facilities and the geological environment in general is a pulse-vortex nature of the processes of geodynamics, which is manifested in geophysical fields. Effective search and exploration of fractal reservoirs that are filled with hydrocarbons in pulsed mode is possible with high-resolution space-time geophysical methods.

Key words: fluid dynamics, hydrocarbons, fractal, seismic 3D, geological structure, model, the zone of destruction, geodynamic activity, oil and gas fields.

References

1. Zapivalov N.P., Smirnov G.I., Kharitonov V.I., Fraktaly i nanostruktury v neftegazovoy geologii i geofizike (Fractals and nanostructures in petroleum geology and geophysics), Novosibirsk: GEO Publ., 2009, 131 p.

2. Zapivalov N.P., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 12, pp. 89-91.

3. Bembel' S.R., Modelirovanie slozhnopostroennykh zalezhey nefti i gaza v svyazi s razvedkoy i razrabotkoy mestorozhdeniy Zapadnoy Sibiri (Modeling of oil and gas complex structure in connection with the exploration and development of fields in Western Siberia), Tyumen' – Shadrinsk: OGUP “Shadrinskiy Dom Pechati” Publ., 2010, 153 p.

4. Bembel' R.M., Megerya V.M., Bembel' S.R., Geosolitony: funktsional'naya sistema Zemli, kontseptsiya razvedki i razrabotki mestorozhdeniy uglevodorodov (Geo-solitons: a functional system of the Earth, the concept of exploration and development of hydrocarbon deposits), Tyumen': Vektor Buk Publ., 2004, 344 p.

5. Mandelbrot B.B., The fractal geometry of nature, San-Francisco: Freeman, 1982, 459 p.

6. Muslimov R.Kh., Neftyanoe khozyaystvo – Oil Industry, 2007, no. 3, pp. 24-29.

It is suggested for large and giant fields a method of hydrodynamical simulation - models decomposition into the system of sector models, a separate counting in them, and the iterative conjugation of sector models to preserve the integrity of the initial modeling object. The algorithm and ways of iterative convergence acceleration are described.

Key words: giant fields, hydrodynamic modeling, full-scale models, sector models, decomposition, overlapping, iterative conjugation, Schwarz alternating method.

References

1. Arzhilovskiy A.V., Bikbulatova T.G., Kostyuchenko S.V., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 11, pp. 52-55.

2. Kostyuchenko S.V., Bordzilovskiy A.S., Ignatov I.S., Shapieva E.I., Neftyanoe khozyaystvo – Oil Industry, 2009, no. 8, pp. 42-46.

3. Nepomnyashchikh S.V., Metody dekompozitsii oblasti i fiktivnogo podprostranstva (Domain decomposition and fictitious subspace methods): Doctor of physical and mathematical sciences dissertation, Novosibirsk: Novosibirsk State University Publ., 2008.

4. Kostyuchenko S.V., Yampol'skiy V.Z., Monitoring i modelirovanie neftyanykh mestorozhdeniy (Monitoring and modeling of oil fields), Tomsk: NTL Publ., 2006, 246 p.

Nowadays hydrocarbons field exploitation is characterized by deterioration of structure of residual oil reserves. One of the foreground tasks at the present stage for oil science is the problem of effective development of reservoirs liable to technogenic fracture formation. According to monitoring and analysis results of oil fields groups in West Siberia throughout last three years the author represents the assumption of determination of technogenic fracture extension direction in the dismembered reservoirs.

Key words: geological and hydrodynamic simulation, watercut, maintenance of reservoir pressure, reservoir properties, fracture porosity.

References

1. Vyazovaya M.A., Shevelev M.B., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 12, pp. 46-49.

The paper presents results of TatNIPIneft efforts to work out a technology involving computerization of reservoir engineering process stages, particularly, selection of project wells’ location or sidetracking from existing vertical wells. The technology is realized through the permanently updated model based on ROXAR products and in-house LAZURIT reservoir engineering and reservoir management software package. The purpose of the work was to justify and assess the efficiency of sidetracking.

Key words: permanently updated model, LAZURIT, prediction calculation, options for field development, automation equipment, EnABLE.

References

1. Abdulmazitov R.G., Latifullin F.M., Fazlyev R.T., Antonov O.G., Sb. dokladov nauchno-tekhnicheskoy konferentsii, posvyashchennoy 50-letiyu TatNIPIneft' OAO “Tatneft'” (Summary reports of the scientific and technical conference devoted to 50th anniversary of TatNIPIneft "Tatneft"), Moscow: Neftyanoe khozyaystvo, 2006, pp. 215-216.

Key words: drowning, methodology, geological and technological parameters, statistical method, oil viscosity.

This paper summarizes many years of experience in operating oil fields of the Perm region. The main geological and technical parameters of the development affecting the dynamics of water production of oil under development are considered. The result of research is the rapid methodology of water production wells assessment, based on statistical models that take into account the effect on the viscosity of oil in water content, such as sewer, process operating parameters of the deposit.

References

1. Galkin S.V., Koshkin K.A., Poplaukhina T.B., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2009, no. 10, pp. 37-39.

2. Galkin S.V., Ilyushin P.Yu., Neftyanoe khozyaystvo - Oil Industry, 2011, no. 10, pp. 22-24.

3. Galkin V.I., Galkin S.V., Permyakov V.G., Akimov I.A., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2008, no. 8, pp. 48-50.

The current state of development of large fields of the southern group of Samaraneftegaz OAO, types and number of geological and technical measures, performed in 2000-2010, are analyzed. The strategy of the additional development of fields under consideration, providing for a choice of geological and technical measures and dates of their carrying out in the future is proposed.

Geological and technological parameters influencing on the oil production rates after hydrofracturing are stated on the basis of probability and statistical analysis. Multidimensional models, allowing to forecast the oil production rates after hydrofracturing and the average annual increase in production rates, are constructed.

Key words: oil, field, hydraulic fracturing, oil production rate, multidimensional model.

References

1. Ivanov S.A., Galkin V.I., Rastegaev A.V., Izvestiya vuzov. Neft' i gaz, 2010, no. 3, pp. 17-22.

2. Ivanov S.A., Rasstegaev A.V., Galkin V.I., Neftepromyslovoe delo, 2010, no. 7, pp. 54-57.

3. Ivanov S.A., Skachek K.G., Galkin V.I. et. al., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2009, no. 10, pp. 42-45.

4. Galkin V.I., Rastegaev A.V., Kozlova I.A. et. al., Neftepromyslovoe delo, 2010, no. 7, pp. 4-7.

5. Rastegaev A.V., Galkin V.I., Kozlova I.A. et. al., Neftepromyslovoe delo, 2010, no. 7, pp. 8-11.

The influence of several characteristics of BS101 layer of Druzhnoye field on the oil production rates is justified quantitatively at the statistical level. Individual and multidimensional models of oil production rates forecast are constructed. It is concluded about the possibility of creating multi-dimensional mathematical models of the oil production rates forecast by a complex of indicators.

Key words: oil, field, oil production rate, probability, forecast.

References

1. Galkin V.I., Zhukov Yu.A., Shishkin M.A., Primenenie veroyatnostnykh modeley dlya lokal'nogo prognoza neftegazonosnosti (The application of probabilistic models for the local prediction of the oil and gas potential), Ekaterinburg: Ural'skiy rabochiy Publ., 1992. – 108 s.

2. Ivanov S.A., Skachek K.G., Galkin V.I. et al., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2009, no. 10, pp. 42-45.

3. Shaykhutdinov A.N., Galkin V.I., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2009, no. 6, pp. 11-14.

4. Galkin V.I., Shaykhutdinov A.N., Neftyanoe khozyaystvo – Oil Industry, 2010, no. 1, pp. 52-54.

5. Ivanov S.A., Rasstegaev A.V., Galkin V.I., Neftepromyslovoe delo, 2010, no. 7, pp. 54-57.

The paper sums up OAO TATNEFT ten years’ experience of commercial application of beamless drives based on reversing reducing converter mechanism (chain drives) that are used in the sucker-rod pumping units. The paper presents information about well operation conditions, production problems, as well as data on application. Results of performance analysis of statistically significant samples of difficult wells referred to different categories clearly demonstrate the actual operational advantages of chain drives. Prospective lines of development of chain drives and improvement of well performance operated by sucker-rod pumping units with chain drives are discussed.

Key words: sucker-rod pumping units, slow-speed long-stroke pumping mode, chain drives, different-parameter drives, OPEX reduction, reduction of well intervention jobs, saving of energy costs on well production lifting, prospective lines of chain drives improvement.

References

1. Valovskiy V.M., Valovskiy K.V., Tsepnye privody skvazhinnykh shtangovykh nasosov (Chain drives for downhole sucker rod pumps), Moscow: VNIIOENG Publ., 2004, 492 p.

2. RD 153–39.1–252–02, Rukovodstvo po ekspluatatsii skvazhin ustanovkami skvazhinnykh shtangovykh nasosov v OAO “Tatneft'” (Manual operation of wells by downhole sucker rod pumps units in OAO "Tatneft"), Al'met'evsk, 2002, 202 p.

3. Pat. 2200876 RF, MPK7 F 04 V 47/02, Privod skvazhinnogo shtangovogo nasosa (varianty) (The drive of downhole sucker rod pump (options)): by Takhautdinov Sh.F., Valovskiy V.M., Fedoseenko N.V., Shamsutdinov I.G., Ibragimov N.G., Avramenko A.N.

4. Pat. 2283969 RF, MPK7 F 04 B 47/02, Privod skvazhinnogo shtangovogo nasosa (The drive of downhole sucker rod pump): by Takhautdinov Sh.F., Ibragimov N.G., Fadeev V.G., Akhmetvaliev R.N., Isupov S.I., Slesarev A.D., Reutov V.B., Valovskiy V.M., Shamsutdinov I.G., Valovskiy V.M., Fedoseenko N.V.

5. Pat. 18931 The Republic of Kazakhstan, F 04 B 47/02, Privod skvazhinnogo shtangovogo nasosa (The drive of downhole sucker rod pump): Takhautdinov Sh.F., Ibragimov N.G., Fadeev V.G., Akhmetvaliev R.N., Isupov S.I., Slesarev A.D., Reutov V.B., Valovskiy V.M., Shamsutdinov I.G., Valovskiy K.V., Fedoseenko N.V.

The design is suggested and benchmark investigations of the system of submersible electric motors cooling with the heat pipes is carried out. It is shown that at feeding less than 15 m³/day an average temperature of the stator winding is reduced approximately by 15° compared to the compounded submersible electric motor.

Key words: submersible motor, heat pipe, test, temperature, heat transfer.

References

1. Ermolin N.P., Zhirikhin I.P., Nadezhnost' elektricheskikh mashin (The reliability of electrical machines), Leningrad: Energiya Publ., 1976, 248 p.

2. Loytsyanskiy L.G., Mekhanika zhidkosti i gaza (Fluid mechanics), Moscow: Drofa Publ., 2003, 840 p.

3. Poshvin E.V., Burenie i neft', 2011, no. 11, pp. 46 – 49.

4. Pat. RF no. 2295190, Pogruzhnoy maslozapolnennyy elektrodvigatel' (Submersible oil-filled electric motor).

The authors offer a performance criterion of the stripping process depending on the fuel gas composition and basic performance parameters of the strippers that is based on the results of theoretical research and tests of strippers. Minimum volume concentrations of the fuel gas light fractions have been determined, in that number, with account of different hydrogen sulfide concentration, to reduce mass fraction thereof in oil to meet desired values.

Key words: oil, hydrogen sulfide, the stripping process, gas.

References

1. Shipilov D.D., Sovershenstvovanie tekhnologiy ochistki nefti ot serovodoroda na promyslovykh ob’ektakh (Improved treatment technologies for hydrogen sulfide in oil field facilities): Doctor of Science dissertation, Bugul'ma, 2011, 25 p.

2. Shipilov D.D., Shatalov A.N., Neftepromyslovoe delo, 2011, no. 11, pp. 43-46.

African continent, china's energy strategy in Africa, potential of the African continent,

China's energy strategy in Africa, Africa's role in the energy strategy of

Russia's energy sector.

Africa has tremendous energy potential. It holds about 10 percent of global oil reserves.

The advantage of the African oil reserves, unlike the U.S., China, the North Sea

and Russia reserves, that they are largely unexplored. Due to unstable situation in the

Middle East and in order to diversify oil supplies the U.S. and China are actively cooperating

with the new producer of hydrocarbons - the African continent. In order to

strengthen the geoeconomic and geopolitical position of Russia and for the preservation

of native material and raw material base, it’s practically important for our

country to reveal its own strategy on the continent through comparative analysis.