Key words: geology, genesis, facial analysis.

It is shown that the main factor influencing the filtration-capacitive properties of YuS₂ layer of West-Surgut fields is confinement of developing sediments to different groups of continental facies. The sediments of channels and channel migration belts are the most promising in terms of effectiveness of the development.

1. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikh lovushek nefti i gaza (Electrometric geology of sand bodies - lithologic traps of oil and gas), Leningrad: Nedra Publ., 1984, 260 p.

Key words:oil deposits, seismic prospecting, paleo- and geomorphological analysis, zone of destruction, oil and gas, petroleum migration, fracture, Western Siberia.

The problems of oil producing formations mapping are considered on the example of one of the areas placed in the west part of the Surgut arch. The forecast is based on the results of detailed 3D seismic survey in conjunction with the geodynamic, paleo- and geomorphological analysis. The principles of selection of prospective areas in the Lower Cretaceous and Middle Jurassic sediments are suggested.

References

1. Bembel' S.R., Modelirovanie slozhnopostroennykh zalezhey nefti i gaza v svyazi s razvedkoy i razrabotkoy mestorozhdeniy Zapadnoy Sibiri (Modeling of complicated oil and gas deposits due to the exploration and development of fields in Western Siberia), Tyumen' – Shadrinsk: Shadrinskiy Dom Pechati Publ., 2010, 181 p.

2. Gilyazova S.M., Kurilenkova G.A., Sidnev A.V., Mezhdunarodnyy zhurnal prikladnykh i fundamental'nykh issledovaniy, 2009, no. 3, pp. 123-125.

3. Geologiya i neftegazonosnost' Khanty-Mansiyskogo okruga: atlas (Atlas: Geology and petroleum potential of the Khanty-Mansiysk), GP KhMAO «Nauchno-analiticheskiy tsentr ratsional'nogo nedropol'zovaniya im. V.I. Shpil'mana», Ekaterinburg: IzdatNaukaServis Publ., 2004, 146 p.

4. Dmitrievskiy A.N., Balanyuk I.E., Karakin A.V., Gazovaya promyshlennost' - Gas Industry of Russia, 2005, no. 1, pp. 24-27.

5. Kostenevich K.A., Fedortsov I.V., Litologicheskie i geokhimicheskie osnovy prognoza neftegazonosnosti (Collected works “ Lithological and geochemical basis of forecast of oil and gas potential”), International scientific and practical conference, St. Petersburg: Publ. of VNIGRI, 2008, pp. 375-383.

6. Lisitsyn A.P., Lavinnaya sedimentatsiya i pereryvy osadkonakopleniya v moryakh i okeanakh (Avalanche sedimentation and interruption of sedimentation in seas and oceans), Moscow: Nauka Publ., 1988, 310 p.

7. Fedorov M.Yu., Osobennosti kartirovaniya kollektorov plasta YuS2 po rezul'tatam dinamicheskogo analiza (Features of mapping of collector layer YuS2 on the results of dynamic analysis), Conference “Geologiya, geofizika i ekologiya Ekaterinburg”, 2005, pp. 61-62.

Key words: field, the equilibrium model of the geological, water contact, well

As a result, a detailed analysis of materials of geophysical research cuts holes in objects AS_9-11 one of the largest oil and gas fields in Western Siberia, established that the existence of a common gas cap in a single reservoir, as well as in adjacent layers may exist with different units and gas-oil-water contacts. The levels of contact blocks, as well as the thickness of the oil rims are functionally related to each other, which follows from the requirement of equilibrium of the system. This can explain the diversity of levels of contact layers AS_{9-11 in the deposit area. An equilibrium model of the geology, which is the base for building a digital three-dimensional geological and technological model of the object AS9-11}.

Key words: volcanic rocks. hydrothermal processes, postprimary changes, reservoir features.

The staging process of changing for volcanic rocks by hydrothermal fluids and their influence to pertophysical properties of volcanites as porosity, permeability, wettability was investigated. The results point to hardening rocks and some reduction of porosity and permeability during high-temperature stage. The influence of middle-temperature fluid depends on texture-structure rock features. Low-temperature processes make worse any filtration characteristics.

References

1. Chirkov V.L., Gorbunov I.N., Shadrina S.V., et al., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 4, pp. 41-45.

2. Korovina T.A., Kropotova E.P., Braduchan Yu.V., Voprosy geologii, bureniya i razrabotka neftyanykh i gazoneftyanykh mestorozhdeniy Surgutskogo regiona (Collected works “ Issues of geology, drilling and development of oil and gas deposits in the region of Surgut”), Moscow: Neftyanoe khozyaystvo, 2010, V. 10, pp. 100-108.

3. Shadrina S.V., Smirnova E.V., Vulkanogennyy kompleks Rogozhnikovskogo litsenzionnogo uchastka (Volcanic assemblage of Rogozhnikovskiy license area), Scientific conference with the participation of foreign scientists “Fundament, struktury obramleniya Zapadno-Sibirskogo mezozoysko-kaynozoyskogo osadochnogo basseyna, ikh geodinamicheskaya evolyutsiya i problemy neftegazonosnosti” (Structural framing structure of the West Siberian Mesozoic-Cenozoic sedimentary basin, and their geodynamic evolution and petroleum potential of the problem), Tyumen, September 29 - October 2, 2008, Novosibirsk: Parallel' Publ., 2008, pp. 231 – 234.

4. Shadrina S.V., Vulkanity Rogozhnikovskogo litsenzionnogo uchastka (zapadnoe obramlenie Zapadno-Sibirskoy geosineklizy) (Volcanics of Rogozhnikovskiy license area (the western border of the West Siberian geosyneclise)), All-Russia petrographic conference “Petrologiya magmaticheskikh i metamorficheskikh kompleksov” (Petrology of igneous and metamorphic complexes), Publ. of Tomskiy TsNTI, 2009, V. 7, pp. 325-327.

5. Kiryukhin A.V., Kiryukhin V.A., Manukhin Yu.F., Gidrogeologiya vulkanogenov (Hydrogeology of volcanic), St. Petersburg: Nauka Publ., 2010, 395 p.

Keywords: microlayering, shaliness, heterogeneity of saturation, petrophysical model, algorithm of interpretation.

The petrophysical model and the ability to create algorithms of wells geophysical research data interpretation for thinly bedded rocks is considered. It is shown that thin bedding account on the basis of application of advanced complex of geophysical research at interpreting increases the reliability of determining the reservoirs porosity coefficient.

References

1. Astashkin D.A., Razrabotka petrofizicheskoy modeli neodnorodnykh peschano-alevritovykh porod-kollektorov s tsel'yu povysheniya dostovernosti kolichestvennoy interpretatsii dannykh GIS (na primere nekotorykh mestorozhdeniy Zapadnoy i Vostochnoy Sibiri) (The development of petrophysical models of heterogeneous sandstone-siltstone reservoir rocks to improve the reliability of the quantitative interpretation of geophysical data (for example, some fields in Western and Eastern Siberia)): Thesis of candidate of geological-mineralogical sciences, Moscow, 2005.

2. Darling T., Well logging and formation evaluation, Elsevier Science, 336 p.

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

4. Efimov V.A., Petrofizicheskie modeli slozhno postroennykh glinistykh kollektorov dlya otsenki ikh neftegazonasyshcheniya po dannym elektrometrii skvazhin (Petrophysical model of complicated clay collectors for their estimates of oil and gas saturation according to wells electrometry): Thesis of candidate of geological-mineralogical sciences, Tyumen': Publ. of TyumII im. Leninskogo komsomola, 1984.

5. Lopatin A.Yu., Medvedev A.L., Masalkin Yu.V., Valensiya R., Metodika interpretatsii dannykh GIS v poligeneticheskikh otlozheniyakh vikulovskoy svity mestorozhdeniya Kamennoe (tonkosloistye shtormovye otlozheniya i kompleks zapolneniya vrezannoy doliny) (Methods of interpreting the geophysical data in the polygenetic sediments of Vikulov formation of Kamennoe field (thin-bedded storm deposits and a complex incised valley fill)), SPE 115490, 2008.

Key words: cementation, chemicals, sidetracks.

Features of liners mounting in sideholes and additional troubles appearing at that are given. The sequence of solutions injection at well cementing is considered. An order of a buffer parting fluid preparing is described. The effectiveness of chemical agents application for cementing sideholes at Surgutneftegas OJSC fields is noted.

Key words: cone-rock bits, bits operating time, sideholes.

A new method for determining the maximum operating time of cone-rock bits is presented. It is shown that the method is applicable when using drill bits both of serial production and experimental construction.

Key words: flow deviation technologies, KENWORTH units, oil recovery enhancement, technical and economic efficiency.

Ratings of application of all flow deviation technologies with use of TsA-320 and Kenworth units were compared. Kenworth units have a number of significant advantages over traditional TsA-320 units at the injection of large volumes of chemical reagents solutions: the period of one well operation, the cost of preliminary and final work are reduced, the unit efficiency of well operations is increased, more qualitative preparation of working solutions is ensured. A set of technologies, the most effective for Kenworth use in Surgutneftegaz OAO conditions, is defined.

Key words: flow deviation technologies, reservoir, oil recovery, limiting water production, chemical effect, technical and economic efficiency.

Given are the factors not allowing to cover maximum the reservoir area by stimulation at using flow deviation methods of oil recovery enhancement or requiring a multiple increase in the specific volumes of working solutions injection, that reduces the economic efficiency of flow deviation technologies. The alternative enhanced oil recovery technology consisting in limiting water production in producing wells is considered. Different types of this technology have been tested in the wells of Surgutneftegas OAO. The possibility of their use in a wide range of geological and physical parameters of the reservoirs of the company fields.

Key words: hydrofracturing, foam fracturing, EOR methods, Surgutneftegaz OJSC.

Foam fracturing technology was successfully tested and implemented in Surgutneftegaz OJSC. Treated wells showed substantially reduced completion times and increased oil production compared to the adjacent wells, indicating potential efficiency of the technology. In the pilot jobs the guidelines for foam fracturing design and execution were developed. The method of controlling foam properties during the operation was developed and successfully tested.

References

1. Cooke Jr. C.E., Effect of fracturing fluids on fracture conductivity, Journal of Petroleum Technology, 1975, V. 27, no. 10, pp.1273-1282.

2. Economides M.J., Nolte K.G., Reservoir stimulation, Third edition, New York: John Wiley and Sons, 2000.

3. Ryabokon' S.Ya., Tekhnologicheskie zhidkosti dlya zakanchivaniya i remonta skvazhin (Process liquid for well completion and workover), Krasnodar: Publ. of OAO NPO “Burenie”, 2006.

4. Usol'tsev D., Fomin I., Butula K.K., Pennye GRP: novyy uroven' tekhnologiy stimulyatsii plastov v Zapadnoy Sibiri (Foam fracturing: a new level of technology of reservoirs stimulation in West Siberia), SPE 115558. – 2008.

5. Karpukhin A.S., Analiz provedeniya pennogo GRP na Talinskoy ploshchadi Krasnoleninskogo svoda mestorozhdeniy OAO “TNK-Nyagan'” (Analysis of foam fracturing at Talinskaya area Krasnoleninskoye vault deposits of OJSC "TNK-Nyagan"), X konferentsiya molodykh spetsialistov organizatsiy, osushchestvlyayushchikh vidy deyatel'nosti, svyazannoy s pol'zovaniem uchastkov nedr na territorii Khanty-Mansiyskogo avtonomnogo okruga – Yugry (X conference of young professionals of organizations engaged in activities related to the use of subsoil on the territory of the Khanty-Mansiysk Autonomous Okrug - Ugra), Novosibirsk: Parallel' Publ., 2010.

6. Makienko V., Salimov F., Neftegazovaya vertikal' - Oil and Gas Vertical, 2010, no. 20, pp. 62-64.

7. Reidendach V.G., et al., Rheological study of foam fracturing fluids using nitrogen and carbon dioxide, SPE, 1986, January, pp. 31-41.

8. Rabinovich N.R., Inzhenernye zadachi mekhaniki sploshnoy sredy v burenii (Engineering problems of continuum mechanics in the drilling), Moscow: Nedra Publ., 1989.

Key words: oil, gas factor, residual gas-oil ratio, dissolved gas, fluid phase equilibria.

The general principles of mass transfer in the oil-gas-water system are presented under temperature and pressure conditions of formation and rise to the surface. The influence of dissolved gas on the gaseous component in the value of production wells are shown for deposits being developed with the waterflooding. A model predicting the phase behavior of water-oil mixtures, based on the equations of material balance of component-wise is proposed.

References

1. RF 153-39-007-96, Reglament sostavleniya proektnykh tekhnologicheskikh dokumentov na razrabotku neftyanykh i gazoneftyanykh mestorozhdeniy (Regulations of drawing up the design process documents for the development of oil and gas deposits), Moscow, 1996.

2. Pravila razrabotki neftyanykh i gazoneftyanykh mestorozhdeniy (Rules of development of oil & gas deposits), Moscow, 1987.

3. Vremennye metodicheskie rekomendatsii po zapolneniyu formy federal'nogo gosudarstvennogo statisticheskogo nablyudeniya no. 6-gr (neft', gaz, komponenty), vedeniyu federal'nogo i svodnykh territorial'nykh balansovykh zapasov (Interim guidelines for completing the forms of federal statistical observation (oil, gas components), management of federal and territorial consolidated balance reserves), Moscow, Publ. of Rosgeolfond, 1996.

4. Instruktsiya po primeneniyu klassifikatsii zapasov mestorozhdeniy, perspektivnykh i prognoznykh resursov nefti i goryuchikh gazov. Instruktsiya o soderzhanii, oformlenii i poryadke predstavleniya v Gosudarstvennuyu komissiyu po zapasam poleznykh iskopaemykh pri Sovete ministrov SSSR (GKZ SSSR) materialov po podschetu zapasov nefti i goryuchikh gazov (Instructions for application of the classification of field reserves which are promising and expected resources of oil and combustible gases. Instructions on the content, design and order of presentation to the State Reserves Committee under the Council of Ministers of the USSR (Soviet Union SRC) materials for the calculation of oil and combustible gases), Moscow: Publ. of GKZ SSSR, 1984.

5. Gul'tyaeva N.A., Krikunov V.V., Shilov V.I., Sbornik dokladov “Puti realizatsii neftegazovogo i rudnogo potentsiala Khanty-Mansiyskogo avtonomnogo okruga – Yugry” (Collected works “Ways of implementation of oil and gas and ore potential of the Khanty-Mansiysk Autonomous Okrug - Ugra”), Khanty-Mansiysk, 2011.

Key words: oilfield automation, remote control system, controller, control of process parameters, information technology

It is shown that unified approach to the construction of modern information-management processing systems both in general, and in the auxiliary process is formed and successfully implemented in the Surugtneftegaz OJSC. The functional, realized in systems of all levels in the area of oilfield facilities automation, allows to optimally carry out the process from well up to oil delivery into the oil-trunk pipeline control system of AK Transneft OAO.

Key words: optimization, well operation, monitoring, remote control.

Wells operation with an electric centrifugal pump is currently the main line of an oil lift in water intake and reservoir pressure maintenance systems. The importance of ensuring continuous mode and maximum life of the equipment is marked. It is shown that the implementation of continuous monitoring of modes of operation allows to reduce non-productive costs, associated with the departure of staff, and the number of premature equipment failure caused by operating conditions.

Key words: maps, fields development.

The technology of the automatic centralized construction of geological production maps is developed by SurgutASUneft production management specialists. It is shown that the software developed within the bounds of the technology allows to work with 15 types of maps (reservoir and bottomhole pressures, accumulated withdrawals, the current state of development, etc.). There is the possibility to overlay the ground infrastructure information from the geophysical information system on the geological maps, as well as to overlay maps of the same type, constructed at different dates. The advantages of the given technology are shown.

Key words: multilayer deposit, dual completion, allocation metering, shut-off valves.

The technologies of simultaneously-separate water injection and simultaneously-separate operation of multilayer fields of Surgutneftegaz OJSC are considered. The schemes of two-pipe and one-pipe configurations of equipment of injection well for simultaneously-separate water injection into two layers are given. The schemes of the equipment configuration for the joint operation of two layers with hydraulic and electromagnetic shut-off valves are presented.

References

1. STO 236-2008, Tekhnologiya odnovremenno-razdel'noy zakachki vody v dva plasta cherez odnu skvazhinu (The technology of dual injection of water into two layers through a single hole), Surgut: Publ. of OAO “Surgutneftegaz”, 2008, 38 p.

2. Maksutov R.A., Dobroskok B.E., Zaytsev Yu.V., Odnovremenno-razdel'naya ekspluatatsiya mnogoplastovykh neftyanykh mestorozhdeniy (Dual completion of multi-layer oil fields), Moscow: Nedra Publ., 1974, 232 p.

3. Khisamov R.S., Evdokimov A.M., Sultanov A.S., Neftepromyslovoe delo, 2009, no. 5, pp. 33-39.

Key words: technical requirements, unification, submersible rig.

The history of origin of the technical requirements of Surgutneftegas OJSC to supplied oil recovery facilities is presented. The main technical solutions for the modernization of the downhole equipment, allowing to significantly increase the reliability of electric centrifugal pumps installations, are given. Perspective plans for the unification of the equipment are considered.

Key words: dual completion, a multilayered fields, conservation of resources.

The company made the introduction of new domestic equipment for operation of two layers of one well. The article reveals the experience of using the equipment, its advantages and disadvantages and requirements applicable to the designated wells for the dual completion wells.

Key words: compatibility, thermal manometric system, submersible unit, ground-based unit, communications protocols.

The basic requirements to manufacturers to achieve compatibility of submersible land ground-based units are given. Laboratory verification of the compatibility of submersible and ground-based units of thermal manometric systems of different manufacturers is executed in Surgutneftegas OJSC. A positive result is obtained.

Key words: well, tubing, complex of equipment for tubing pipes cleaning.

Tubing inner cleaning system main components layout is given. Its specification is presented. The technology of mechanical cleaning of the inner surface of the tubing from the salt deposits, corrosion products, asphalt-bitumen and paraffin plugs is considered. The reliability of the system operation in automatic mode is noted.

Key words: associated gas utilization, the gas ejector, separation stages.

To solve the problem of utilization of oil gas at the oil treating facility of Saygatinskoye field the transport system of the first separation stage was redesigned. The gas ejector was used for these purposes. Gas operating parameters were calculated. The principle process flowsheet of the oil treating facility of Saygatinskoye field is given.

Key words: energy efficiency, power-consuming, oil recovery, reservoir pressure maintenance, automation, energy audit, oil lifting.

The structure of energy consumption by lines of activity of Surgutneftegas OAO is given. The process of monitoring the operating parameters of the equipment of reservoir pressure maintenance system is considered. The scheme of organization of a permanent process inspection of the objects of reservoir pressure maintenance system with use of information systems is presented. The monitoring power consumption of the equipment for fluid lifting is described.

Key words: gas turbine engines, small-scale power generation, gas-transport system, the electricity production.

Various activities aimed at improving the working efficiency of gas turbine engines, which are operated at facilities of small-scale power generation and gas-transport system, are carried out. The reconstruction of three gas-transport compressor stations and modernization of two ones is executed. Gas turbine plants maintenance interval is increased, that allowed to reduce energetic block downtime and increase the electricity production.

Key words: systems approach, quality management system, process approach, monitoring.

It is noted that the activity of the central production depot on rent and repair of electrical submersible units is a system of interrelated processes. Categories of these processes are identified. A model of the enterprise activity according to ISO 9001 is given. Blocks of constructing the quality management system based on the specified international standard are considered.

Key words: Belogorye,oil and gas fields, environment state, surface waters, snow cover, atmospheric air, soil, bottom sediments, environmental monitoring.

The development of oil and gas industry has a human impact on all components of the natural environment. This effect appears in change both the external appearance of the surrounding landscape, and the original geochemical setting. It is possible to identify these changes by conducting monitoring studies before beginning of hydrocarbons production operations.

References

1. Fiziko-geograficheskoe rayonirovanie Tyumenskoy oblasti (Physico-geographical regionalization of the Tyumen Region): edited by Gvozdetskiy N.A., Moscow: Publ. of Moscow State University, 1973, 246 p.

2. Murzaev E.M., Slovar' narodnykh geograficheskikh terminov (Dictionary of national geographical terms), Moscow: Mysl' Publ., 1984, 653 p.

3. Kamyshev A.P., Metody i tekhnologii monitoringa prirodno-tekhnicheskikh sistem Severa Zapadnoy Sibiri (Methods and technologies for monitoring natural and technical systems of the North of Western Siberia), Moscow: Publ. of VNIPIgazdobycha, 2000, 230 p.

4. Doklad ob ekologicheskoy situatsii v Khanty-Mansiyskom avtonomnom okruge – Yugre v 2011 g. (Report on the environmental situation in the Khanty-Mansiysk Autonomous Okrug - Ugra in 2011), Khanty-Mansiysk: Publ. of Departament ekologii Khanty-Mansiyskogo avtonomnogo okruga – Yugry, 2012, 176 p.

5. Nedropol'zovanie v Khanty-Mansiyskom avtonomnom okruge v 2004 g. (Subsoil in the Khanty-Mansiysk Autonomous Okrug in 2004), Tyumen - Khanty-Mansiysk, 2005, 118 p.

Key words: field facilities engineering, gas pipeline construction, civil engineering.

The history and background of survey and design work, as well as engineering of surface facilities and development of oil fields in Bashkortostan are reviewed, the main stages in industrial and civil construction design are considered, major projects implemented by Bashneftproject-BashNIPIneft for the 80-year period are described.

Key words: wettability, electric resistance, diffusion-adsorption activity, reserves calculation, oil and gas saturation.

We propose to evaluate the wettability of rocks in the well section using by the methods of electric logs. It will increase the relability of the estimation of the parameters at the calculation of oil reserves by the interpretation of well-logging data.

References

1. Tiab D.; Donaldson E. C., Petrophysics: theory and practice of measuring reservoir rock and fluid transport properties, 3rd ed., Oxford: Gulf Professional Pub.

2. Patent no. 2237162 RF, Otsenka stepeni gidrofobnosti porovogo prostranstva gornykh porod s ispol'zovaniem diffuzionno-adsorbtsionnoy aktivnosti (Method for estimating hydrophoby of porous space of rock solids with use of diffusion-absorption activity), authors: Shishlova L.M., Sidorovich S.N., Adiev A.R.

Key words: H₂S concentration, H2S fluid analyzer, gas detector tube, preliminary water discharge unit, multi-zone field, associated petroleum gas, annulus, dynamic head.

The exploitation efficiency of oil fields with H2S concentrations depends on the monitoring quality all the way from the bottom-hole to the stock-tank oil delivery and associated petroleum gas sales points. Numerous studies show that without certain physical and (or) chemical treatment, the concentration of H2S in the produced water, oil and associated gas remains constant for a long time. This permanence makes it possible to solve a number of field development tasks such as mapping reservoir flooding patterns, separating oil production from multi-zone field with numerous targets, indirect assessment of corrosion on field equipment.

References

1. ST-04-03-01/OOO, Primenenie neytralizatorov serovodoroda na ob"ektakh ANK “Bashneft'” (The use of hydrogen sulfide converters on the fields of "Bashneft"), Ufa: Publ. of “Bashneft'-Dobycha”, 2010, 21 p.

2. Patent no. 2286453 S2 RF, Sposob otsenki gidrodinamicheskoy svyazi mezhdu skvazhinami serovodorodsoderzhashchego mestorozhdeniya (Method to estimate hydrodynamic connection between wells drilled in hydrogen sulfide containing deposit), authors: Denislamov I.Z., Shaydullin F.D., Sitdikov I.F., Aminov A.F.

Key words: sandstone reservoirs, displacement factor, optimum flooding rate, permeability, oil viscosity.

The experimental research results are analyzed for determining optimum fluid flow velocities in the pore volume of the Upper Devonian Pashiyskiy sandstones on the oil fields of Bashkortostan. Conclusions are drawn as to how the permeability of the porous media and the viscosity of the displaced oil affect the optimum rate of flooding.

References

1. Russkikh K.G., Lozin E.V., Neftyanoe khozyaystvo - Oil Industry, 2011, no. 7, pp. 104-107.

2. Lozin E.V., Panteleev V.G., Asmolovskiy V.S., Neftyanoe khozyaystvo – Oil Industry, 1993, no. 11, pp. 16-18.

3. Lozin E.V., Panteleev V.G., Davlyatov F.D., Fazovye pronitsaemosti dlya nefti i vody peschanykh i karbonatnykh kollektorov nekotorykh mestorozhdeniy Bashkirii (Permeabilities for oil and water of sandy and carbonate reservoirs of some deposits of Bashkortostan), Collected papers of BashNIPIneft', V. 81, 1990, pp. 62-71.

Key words: geologic exploration, drilling, South-Tatar Arch, structure, seismic density, reservoir, velocity anomaly, Kamsko-Kinelsky trough system.

One of the ways to reduce geological risks during exploration and prospecting

is to analyze earlier exploration data covering a large number of oil-bearing

structures, as well as those structures which didn’t prove to be oil-bearing.

This paper reports key reasons for unsuccessful wildcat drilling in South-Tatar

Dome area, presents the results of comparison against successfully drilled

structures and proposes solutions to improve exploration success rate.

Key words: classification systems, reserves, petroleum resources, the North Sea basin.

This article is devoted to the comparison of Reserves and Recourses’ classifications of North Sea basin countries. It brings to the attention of the wide range of experts the reserves classification systems of Norway, Denmark and UK, showing their differences and similarities. The survey of reserves estimation standards used in the Arctic neighboring countries is of current importance due to new oilfield discoveries in the Russian sector of the Barents sea.

References

1. UK energy in brief 2011, URL: http://www.decc.gov.uk/assets/decc/11/stats/publications/energy-in-brief/2286-uk-energy-in-brief-2011.pdf

2. UK The Brown Book 1998, URL: http://www.dbd-data.co.uk/bb1998/book.htm

3. URL: http://og.decc.gov.uk/en/olgs/cms/data_maps/field_data/uk_oil_gas_res/uk_oil_gas_res.aspx

4. URL: http://www.dbd-data.co.uk/bb1998/book.htm

5. URL: http://www.spe.org/industry/docs/OGR_Mapping.pdf

6. URL: http://www.oilandgasuk.co.uk/

7. URL: http://www.npd.no/en/

8. URL: http://www.cdu.ru/catalog/inform_analytic/TEK_countries/pdf/Dania.pdf

9. URL: http://www.ens.dk/en-us

Key words: technology of casing, producing well, cement slurries, spacers, durability of casing, improve the quality of oil wells casing.

To improve the quality of oil wells casing requires the fulfillment of a complex of measures, aimed at the preparation of the well bore to the cementing jobs, at the preparation of cement slurries with the required technological properties, at the realization of the mode of spacer and cement squeezing grout injection, at the ensuring the safety of a cement stone and etc. A comprehensive approach taking into account the geological features of the oilfields allows effectively solve the task of improving the quality of the oil wells casing.

References

1. Salikhov R.G., Krapivina T.N., Krysin N.I., Primenenie shchelevoy gidropeskostruynoy perforatsii pri vtorichnom vskrytii produktivnykh plastov (Use slotted abrasive jet perforation during secondary completion of productive layers), St. Petersburg: Nedra Publ., 2005, 180 p.

2. Likhushin A.M., Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more, 2012, no. 3, pp. 43-49.

3. Vartumyan G.T., Zakharchenko E.I., Datsenko E.N., et al., Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more, 2012, no. 4, pp. 43-46.

4. Novokhatskiy D.F., Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more, 2011, no. 10, pp. 37-42.

Key words: producing well, grouting mortar, gas-liquid mixture, well completion, oil recovery troubles.

The article discusses the necessity of a comprehensive approach to the problem of preservation of reservoir properties of productive beds, providing prevention of bottom zone pollution at all stages of well completion. The article gives the results of studies of the basic technological properties of liquid mixtures for the opening of productive horizons with abnormally low reservoir pressures. The choice of builders and stabilizers for the preparation of gas-liquid mixtures is substantiated.

References

1. Chernyshov S.E., Turbakov M.S., Krysin N.I., Neftyanoe khozyaystvo. – Oil Industry, 2011, no. 8, pp. 98-100.

2. Melekhin A.A., Chernyshov S.E., Turbakov M.S., Neftyanoe khozyaystvo – Oil Industry, 2012, no. 3, pp. 50-52.

3. Chernyshov S.E., Turbakov M.S., Krysin N.I., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 1, pp. 78-80.

4. Muraev Yu.D., Gazozhidkostnye sistemy v burovykh rabotakh (Gas-liquid systems in drilling operations), St. Petersburg: Publ. of St. Petersburg Mining, 2004, 123 p.

5. Ryazanov Ya.A., Entsiklopediya po burovym rastvoram (Encyclopedia of drilling muds), Orenburg: Letopis' Publ., 2005, 664 p.

6. Slyusarev N.I., Kozlovskiy A.E., Loskutov Yu.N., Tekhnologiya i tekhnika bureniya geologorazvedochnykh skvazhin s promyvkoy penoy (Technology and technique of drilling exploration wells with foam washing), St. Petersburg: Nedra Publ., 1996, 179 p.

7. Tikhomirov V.K., Peny. Teoriya i praktika ikh polucheniya i razrusheniya (Foam. Theory and practice of their production and destruction), Moscow: Khimiya Publ., 1983, 264 p.

8. Turitsyna M.V., Nauchnye issledovaniya i innovatsii (Collected papers “Research and innovation”), Perm'.: Publ. of Perm National Research Polytechnic University, 2011, V. 5, no. 2, pp. 61-63.

Key words: producing well; grouting mortar; polymer additive; oil recovery troubles

The necessity of integrated approach for the safety support of filtration and capacitive characteristic of payout beds providing pollution prevention of bottomhole zone on each injection stage is justified. The investigations` results of main technological characteristics of gas-liquid mixtures for opening-up new pay horizons with abnormally low formation pressure are presented. The choice of structure-forming agents and stabilizers for gas-liquid mixtures composition is proved.

References

1. Gorgots V.D., Zakharenkov A.V., Yakshibekov F.R., et al., Neftyanoe khozyaystvo – Oil Industry, 2009, no. 5, pp. 86-90.

2. Lukmanov R.R., Bakirov D.A., Burdyga V.A., Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more, 2003, no. 11, pp. 25-30.

3. Melekhin A.A., Chernyshov S.E., Turbakov M.S., Neftyanoe khozyaystvo – Oil Industry, 2012, no. 3, pp. 50-52.

4. Melekhin A.A., Storchak A.V., Neftyanoe khozyaystvo – Oil Industry, 2012, no. 2, pp. 50-52.

5. Chernyshov S.E., Turbakov M.S., Krysin N.I., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 1, pp. 78-80.

Key words: production planning, geological uncertainty, stochastic methods.

In this paper the approach to planning of oil production levels based on geological uncertainty is proposed. Method proposed takes into account production risks through the multivariate calculations application by numerical and semi-analytical reservoir models as the main stages of the planning workflow. By using this approach one can quickly calculate the possible technological and economic characteristics of the development project.

References

1. Kolmogorov A.N., Zhurbenko I.G., Prokhorov A.V., Vvedenie v teoriyu veroyatnostey (Introduction to the Theory of probabilities), Moscow: Nauka Publ., 1982, 160 p.

2. Instruktsii po otsenke perspektivnykh ploshchadey pri pomoshchi paketa GeoX (Instructions for assessment of prospects using the package GeoX), Oslo, June 2010.

3. Kuznetsov M.A., Sevast'yanova K.K., Nekhaev S.A., Neftyanoe khozyaystvo – Oil Industry, 2011, no. 6, pp. 2-6.

4. Krasnov V.A., Sudeev I.V., Yudin E.V., Lubnin A.A., Nauchno-tekhnicheskiy Vestnik OAO Rosneft', 2010, no. 1, pp. 2-6.

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

6. Metropolis N., Ulam S., The Monte Carlo method, J. Amer. Statistical assoc. 1949 44, no. 247 335, pp. 341.

Key words: powder generator of pressure, gun-gas-generator complex, combustion-oxidizing compositions, das-dynamic fracturing.

The equipment and technologies for the oil and gas wells stimulation with explosive and pulse methods are presented. A description of the powder pressure generators, integrated devices such as gun-gas-generator complex and the technologies of works, including in the active media, intensifying the effect of the force action of combustion-oxidizing compositions, is given. Examples of successful application of projects in different regions of the oil and gas production are given.

References

1. Gajvoronskij I.N., Merkulov A.A., Bizhanov A.N., Bajmuhanbetov S.G., Karotazhnik, 2005, no. 12-13.

Key words: geocellular reservoir model, zonally inhomogeneous layer, water displacement, oil, water.

On the basis of analytical solution a theoretical analysis of the displacement of oil by water from the zonally inhomogeneous layer, operated by the gallery of wells, is made. The problem was solved at a given pressure drop for the two schemes of oil displacement by water: Liebenson - Masket and Buckley - Leverett in one-and two-dimensional formulations. The obtained theoretical results were checked on the field data at one of Kazakhstan fields. The fulfilled analysis confirmed the applicability of the criterion of efficiency of mutual arrangement of production and injection wells, taking into account the permeability, layer thickness and porosity in conditions of real fields. Using the proposed criterion will allow purposefully change the system of wells location subject to filtration-capacitive properties of a layer.

References

1. Ponomarev A.G. Issledovanie effektivnosti sistem razrabotki pri zavodnenii zonal'no-neodnorodnykh plastov (Investigation of the effectiveness of development in flooding zone-inhomogeneous layers): Thesis of candidate of technical sciences, Moscow, 1978, 162 p.

2. Pichugin O.N., Mandrik I.E., Guzeev V.V., Nikiforov S.V., et al., Optimizatsiya sistemy rasstanovki skvazhin s uchetom neodnorodnosti ob"ekta na pozdney stadii ego razrabotki (Optimization of well placement, taking into account the inhomogeneity of the object at a late stage of its development), Russian-European seminar “Razrabotka neftyanykh mestorozhdeniy na pozdney stadii ekspluatatsii”, Tyumen', 2004.

3. Nikiforov S.V., Optimizatsiya sistem razrabotki neftyanykh mestorozhdeniy na pozdney stadii ekspluatatsii (Optimizing systems for the development of oil fields in the late stage of operation): Thesis of candidate of technical sciences, Tyumen', 2006, 158 p.

Key words: gel compounds, carbonate rocks, filtration, chemical methods of enhanced oil recovery.

The main purpose of this paper is a determination of an interaction mechanism between minerals of a carbonate rock and a certain acid gel compound. Additionally, the results of experiments could demonstrate an increased efficiency of this compound in conditions of the Jugomashevskoe oil field.

As a result of filtration and petrography experiments, we determined that the gel compound on the basis of «sienit» and hydrochloric acid actively interacts with minerals of a reservoir of the Jugomashevskoye oil field in conditions of high temperature and high pressure. The dynamic of gradient pressure on a core sample shows that the gel compound forms a strong gel which reduces core permeability by 5 times. A petrography analysis of slices of a carbonate rock after hydraulic acid filtration through a core sample shows that acid compound dissolves mainly gypsum which is cement for grains of a dolomite in a core. As a result of filtration, grains of dolomite lose their coherence and a long hole appears. The «sienit» reagent reduces the interaction velocity of dolomite dissolving due to appearance of residues CaSiO₃. This residue forms a protection layer on the rock.

References

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

Key words: porosity change, estimation of reserves, development of oil fields.

It is concluded that at the establishment of a geological model of the field it is necessary to determine whether the technogeneous impact have effected on the structure and volume of pore space. If it has changed as a result of the deposit development, then at construction of a cube of porosity should take into account changes of the last in the result of technogeneous impact. In accordance with the stages of development of oil fields the classification of the causes of reservoir open porosity change is made. The mechanisms of reservoirs open porosity change are described in the classification.

References

1. Bokserman A., Mishchenko I., Tekhnologii TEK, 2006, no. 12, URL: http://www.oilcapital.ru/edition/technik/archives/technik/technik_06_2006/103366/public/103388.shtml

2. Eremin N.A., Zolotukhin A.B., Nazarova L.N., Chernikov O.A., Vybor metoda vozdeystviya na neftyanuyu zalezh' (Choice of method of oil reservoir stimulation), Moscow: Publ. of GANG, 1995, 190 p.

3. Zinovkina T.S., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2011, no. 6, pp. 67-70.

4. Ibragimov G.Z., Fazlutdinov K.S., Khisamutdinov N.I., Primenenie khimicheskikh reagentov dlya intensifikatsii dobychi nefti. Spravochnik (The use of chemicals for enhanced oil recovery. Reference book), Moscow: Nedra Publ., 1991, 384 p.

5. Ivannikov V.I., Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2011, no. 4, pp. 56-60.

6. Ivanova M.M., Cholovskiy I.P., Bragin Yu.I., Neftegazopromyslovaya geologiya (Oil and gas geology), Moscow: Nedra Publ., 2000, 414 p.

7. Mikhaylov N.N., Fizika neftyanogo i gazovogo plasta (Physics of the oil and gas reservoir), Part I, Moscow: MAKS Press Publ., 2008, 448 p.

8. Papukhin S.P., Issledovanie vliyaniya tekhnogennogo vozdeystviya na strukturu porovogo prostranstva, fil'tratsionno-emkostnye svoystva neftenasyshchennykh kollektorov i KIN (Investigation of the influence of anthropogenic impact on the structure of the pore space, reservoir properties of oilsaturated reservoir and the oil recovery factor): Thesis candidate of technical sciences, Ufa, 2008, 112 p.

9. Samvelov R.G., Geologiya nefti i gaza - The journal Oil and Gas Geology, 1995, no. 9, pp. 5-15.

10. Surguchev M.L., Vtorichnye i tretichnye metody uvelicheniya nefteotdachi plastov (Secondary and tertiary methods of enhanced oil recovery), Moscow: Nedra Publ., 1985, 308 p.