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/ July
July 2011




The oil and gas companies



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Geology and prospecting works


R.S. Khisamov (Tatneft OAO), M.A. Shavaliev, I.I. Valeev, A.Ya. Suleimanov (TatNIPIneft)
Prospects of incrementing oil reserves of the Romashkinskoye field due to geological exploration

The Romashkinskoe field still remains, and will be the main oil generating field both for Tatneft OAO, and for Tatarstan. Results geologo-geophisical and scientific studies carried out on the territory of this unique field suggest that the field still has huge capabilities. Prospects of incrementing mineral-resource base are associated with extensive use of existing wells and using the present-day methods of geological exploration.
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V.G. Bazarevskaya, T.I. Tarasova, R.R. Timergaleeva, G.S. Galimova, O.V. Presnyakova (TatNIPIneft)
Analysis of connectivity in development of anticlinal stratigraphic deposits

Conventionally direct and indirect indications of interzonal communication between the Tournaisian carbonates and the Bobric sandstones in ravinement zone wells are discussed. The paper presents characteristic of three types of connectivity by the example of Berezovskoye, Shegurchinskoye, and Onbiyskoye oil fields.
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L.N. Salakhova (TatNIPIneft)
Optimization of geologic modeling of complex Carboniferous oil reservoirs

The paper presents the procedure of geologic modeling of complex Lower Carboniferous oil reservoirs that enables to improve the accuracy of differentiated calculation of oil reserves, to enhance reservoir simulation, and to improve the accuracy of calculations. Geologic modeling has become an efficient tool helping reservoir engineers to decide on the most efficient stimulation and reservoir management programs.
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Working out and operation of oil deposits


R.S. Khisamov (Tatneft OAO), A.T. Zaripov, S.I. Ibatullina, Sh.G. Rakhimova, R.Sh. Absalyamov (TatNIPIneft)
Improvement of thermal production technology by co-injecting hydrocarbon solvents with steam

The paper presents the results of a study aimed at determining the effect of hydrocarbon solvent addition to steam on efficiency of oil recovery during steam-assisted heavy oil production. Reservoir simulation model has demonstrated this to be a promising approach to improving steam-assisted oil production performance.
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R.R. Ibatullin, E.D. Podymov (TatNIPIneft)
TatNIPIneft-designed EOR technologies, geological and operational conditions of their application

Development of new EOR technologies, upgrading and adaptation of reputable methods to compensate for negative consequences of water flooding development have always been one of the TatNIPIheft priorities. Efficiency of technologies’ application implies that each technology considers specific downhole geological and operational conditions stemming from extent of reservoir maturity. The paper discusses the scope of commercialization of TatNIPIneft-designed technologies, defines the priority research targets, as well as efforts that subsoil users have to make to add to the efficient oil recovery.
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I.M. Bakirov, R.G. Ramazanov, S.V. Nasybullina, R.T. Shakirova (TatNIPIneft), R.R. Kharitonov (Tatnefteprom-Zyuzeevneft OAO)
Improvement of development of small-sized fields with high-viscosity oil through application of novel technologies (by example of the Zyuzeevskoye oil field)

Solutions for efficient production of high-viscosity oil with the project oil recovery factor have been offered. Efficient water flooding system and optimization of well pattern are the main ways to improve development of hard-to-recover oil reserves. The obtained results and conclusions may be applied for development of fields with similar characteristics.

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R.Z. Sattarov, M.N. Khanipov, A.V. Nasybullin (TatNIPIneft), A.S. Sultanov (Tatneft OAO)
Study and justification of formation treatment technologies based on reservor simulation studies

The authors analyzed reservoir response to formation treatment technologies selected based on reservoir simulation studies. The efficiency of technologies was assessed by example of the two field’s blocks. Predicted reservoir performance by several scenarios is presented.
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Z.M. Ganeeva, T.Yu. Elizarova, R.Z. Rizvanov, A.V. Mikhailov, M.R. Khisametdinov (TatNIPIneft)
Application of sodium silicate-based dispersant systems to increase sweep efficiency

The paper presents the technology to increase sweep efficiency through the use of sodium silicate-based dispersant systems. The mechanism is based on bridging of high-permeability zones of the formation and redistribution of the flows with the resultant improved displacement of the by-passed residual oil contained in low-permeability intervals.
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R.S. Khisamov, I.N. Faizullin (Tatneft OAO), P.N. Kubarev (TatNIPIneft), G.P. Antonov (Nauka OOO), I.F. Galimov (Leninogorskneft Oil and Production Department)
Tracer tests to study properties of fractured reservoirs developed by water drive with forced fluid withdrawal

The paper presents results of tracer tests to determine porosity and permeability of fractured reservoirs. The tests were carried out in Area No. 303 developed by water drive with forced fluid withdrawal. Communication between layers in the cross-section has been established.
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V.A. Iktisanov, N.Kh. Musabirova (TatNIPIneft)
Calculation method for non-stable liquid flow with account for various non-Darcy laws

Diffusion equation commonly used for interpretation of pressure transient tests is based on the Darcy law. Results of investigations undertaken by different researches testify to violation of the Darcy law regularities. The author has attempted to take into account basic parameters of non-linear flow: permeability vs. pressure, initial pressure gradient, viscoelastic effects, and interaction between formation fluid and reservoir rock, both chemical and physical. The resultant procedure is based on the works of the Russian researches dated to 1960-80-ies and present-day approaches to the calculation of non-stable liquid flow.
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R.R. Ibatullin, A.B. Vladimirov, A.V. Nasybullin (TatNIPIneft)
Research in Tidal Effect on Oil Field Development Targets: сhallenges and prospects

The paper presents results of research into lunisolar tidal forces effect on reservoir behavior of the Romashkinskoye oil field development targets. Issues associated with accounting for tidal effect on exploration and production practices, as well as future research policy are discussed.
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N.G. Ibragimov (Tatneft OAO), I.G. Fattakhov, L.S. Kuleshova (Ufa State Petroleum Technical University), R.R. Kadyrov, A.K. Sakhapova, E.R. Khamidullina (TatNIPIneft)
New dedicated software determines water production behavior

New Russian software is designed to plot water-cut curves based on the developed algorithm, which are used to determine the type and behavior of water production and the feasibility of water shut-off jobs. Proposed technique is a supplement to well survey data, and in some cases it can fully replace them.
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K.M. Musin, A.V. Fomichev, O.S. Sotnikov (TatNIPIneft)
Laboratory determination of geomechanical properties of the Ashalchi oilfield’s caprocks

The results of laboratory measurements of the geomechanical properties of Ashalchi oilfield are presented. Overall trends of caprock properties change with depth are determined. The correlations between compression strength, tensile strength and rock density and carbonate content are presented. The results of determination of the breakthrough pressure on caprock core samples are shown.
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Technics and technology of oil recovery


Sh.F. Takhautdinov, N.G. Ibragimov (Tatneft OAO), R.R. Ibatullin, R.R. Kadyrov, I.G. Yusupov (TatNIPIneft)
Methods of water shutoff isolation used in well construction and production

The paper presents water shutoff technologies and methods designed by TatNIPIneft engineers.
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R.Z. Sakhabutdinov, L.V. Kudryashova, F.R. Gubajdullin, O.Yu. Antonov, A.I. Nigmatullina, E.S. Buslaev (TatNIPIneft)
Effect of chemical agents used in downstream and midstream operations on oilfield water treatment quality

The paper presents results of research into effect of chemical agents used in downstream and midstream operations on the process of oilfield waste water treatment by settling. It has been found that application of water-soluble and water-dispersible corrosion inhibitors to prevent treated water quality deterioration calls for preliminary research involving modeling of specific environment of actual facilities.
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The oil-field equipment


K.V. Valovsky, G.Yu. Basos, V.M. Valovsky (TatNIPIneft), A.R. Rakhmanov, R.N. Akhmadiev (Almetjevneft Oil and Production Department)
Design and testing of ESP-based dual-action pumping system

Theoretical and practical aspects related to improved performance of oil wells producing heavily water-cut oil are considered. The solution has been found in ESP-based dual-action pumping system providing for downhole oil and formation water segregation due to pressure differential, lift of water-free oil to surface and simultaneous pumping of water to water-absorbing formation.
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V.A. Klimov, K.V. Valovsky, V.M. Valovsky (TatNIPIneft), P.V. Trusov, I.Yu. Zubko (State National Research Politechnical University of Perm)
On the physics of failures, methods of reliability calculations, and efficient performance of rod string in a well

Theoretical and practical aspects of application of the system of downhole pumping equipment condition-based operation are presented by the example of sucker rods. The “physics of failure” offered by TatNIPIneft can efficiently be used as a methodological basis for working out of requirements of artificial lift equipment specifications.

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Ecological and industrial safety


R.M. Gareev (Tatneft OAO), M.N. Mingazov, O.E. Mishanina, E.V. Khisamutdinova (TatNIPIneft)
Evaluation of Ecological State of Lower Kama National Park under Commercial Oil Production Conditions

Evaluation of the state of ecosystems of the «Lower Kama» National Park has been performed. The level of oil-production complex impact has been shown. It has been shown that detrimental impact of oil-production complex on the environment has been reduced thanks to the principles of management provided by the environmental policies of the Company, while recreational impact has increased lately.
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Geology and prospecting works


V.A. Pozdnyakov, V.V. Shilikov, A.S. Merzlikina (RN-KrasnoyarskNIPIneft LLC)
Allocation of high fractured zones in carbonate reservoir of Eastern Siberia

High fractured zones in carbonate reservoir of Eastern Siberia offer particular interest as possible catch pot and oil travel path. Application of traditional seismic processing often does not allow to solve a problem of identification of such geological objects. High fractured zones form complicated weak-power interferential pictures which is possible to allocate and to analyze as disseminated component of a wave field. One of approaches to allocation and the analysis fields of scattered waves connected with high fractured zone is presented in this article.
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Drilling of chinks


A.A. Seleznev, A.V. Korenyako, O.L. Zdobnova, R.M. Abdullin (Bursintez-M NPF ZAO), R.R. Lukmanov (KogalymNIPIneft OAO)
Lubricant additives to mud fluids - a reserve of trouble-free well drilling

The data of laboratory studies on the determination of the friction coefficient in the water-based clay mud fluid with the addition of lubricants and antistuck additives DSB-MGK, DSB-KTM and DSB-M are presented. The maximum reduction in the moment of resistance at introduction of the additives DSB-MGK and DSB-M at bulk concentration of 1-2% is stated. By field testing at Vat-Yeganskoye, Tavlino-Russkinskoye and Druzhnoye fields it is shown that at application of lubricant additives DSB-MGK and DSB-KTM the lubricity of mud fluids makes better, drags  while the drilling tool lifting are reduced. It is noted that the developed lubricant additive DSB-M can be used in the treatment of mud fluids without defoamers.
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Working out and operation of oil deposits


V.A. Afanasjev, V.A. Zakharov, I.V. Zakharov (Tyumen Branch of SurgutNIPIneft), S.N. Matveev, Yu.K. Tsiku (Komsomolskneft Oil and Gas Production Department)
Problems of dual completion technology implementation at multilayer fields of Russia

The reasons, restraining the use of the technology and technique of dual completion of multilayer fields at Russia oilfields, are identified. The equipment, which is currently in commercial production and can be used in wells, is given. The lines, on which it is necessary to speed up research and development work on the creation of well equipment for simultaneously-separate oil recovery with the help of electrical centrifugal pump units, are indicated.
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V.S. Gorshenev, V.N. Khoshtariya, A.A. Martyn (Zarubezhneft JSC), Yu.S. Melekhov, A.V. Borisov (Arcticmorneftegasrazvedka OJSC)
The prospects for increasing oil production at the Peschanoozernoye field

Under the realization of the program on Paleozoic deposits prospecting and exploration at the Peschanoozernoye field three first-priority reefogenic objects to drill are identified. Works on drafting the design documentation, procurement of materials and equipment for the construction of wells have begun.
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A.M. Petrakov, D.V. Reyngart (VNIIneft OAO)
Results of application of the complex emulsion-gel technology of seepages redistribution in the reservoir

Результаты применения комплексной эмульсионно-гелевой технологии перераспределения фильтрационных потоков в пластеIt is noted that developed reservoirs heterogeneity significantly affect the process of flooding of the pool. Injected water inrushes to the production wells, leaving oil to be non-displaced in low permeability interlayers. The complex technology of alignment of intake capacity profile of injection wells is developed and proved. Conducted laboratory experiments and pilot tests have shown high efficiency of the technology.
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K.G. Russkikh, E.V. Lozin, (BashNIPIneft LLC)
Relative one-phase permeabilities versus flooding rates for terrigenous and carbonate reservoirs of Arlanskoye oil field

The results of oil displacement by water from cored terrigenous and carbonate reservoirs of Arlanskoye oil field are analyzed. The relations of oil displacement efficiency and relative one-phase permeabilities for oil and water versus fluid velocity in pore space are obtained. Conclusions are drawn as to relative one-phase permeability dependence on filtration rate.
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K.M. Fedorov (Tyumen State University), A.A. Chusovitin, V.A. Dreyman (TNNC LLC)
Productivity estimation of horizontal wells with different trajectories in low permeable, anisotropic reservoirs

The problem horizontal well application for production stimulation from low permeable reservoir with high anisotropy is considered. The influence of well bore trajectory on the production increase on the reservoir AB1(1-2) of the Samotlorskoe field was the objective of the investigation. Calculations were performed with the simple analytical formula and full scale simulation on sector reservoir model.
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I.N. Ponomareva, M.B. Savchik, V.A. Mordvinov (State National Research Politechnical University of Perm)
Assessment of the duration of the pressure recovery curve formation period at research producing wells of Chashkinskoe oil field

Based on statistical analysis of recovery curves were obtained depending on the pressure to measure the duration of the hydrodynamic studies of production wells in oil field Chashkinskoe transient regimes.
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I.N. Ponomareva, M.B. Savchik, A.A. Erofeev (State National Research Politechnical University of Perm)
Conditions of skin factor use when estimating the state of the critical area of formation

The questions assess the state of critical area of formation based on the definition of the skin factor in the processing of the pressure-build-up curve. It is shown that reliable detection of skin factor is possible with the allocation of the linear portion and an almost complete restoration of the bottomhole pressure to the value of the reservoir, or the approximation of the final plot of a linear dependence with a coefficient of determination is not lower than 0.96.
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The oil-field equipment



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Power saving up technologies


G.A. Pavlov (HMS Neftemash OAO), V.A. Gorbatikov (Giprotyumenneftegaz OAO)
On the problems of energy saving and energy efficiency in reservoir pressure maintenance systems

The typical scheme of reservoir pressure maintenance system, for which HMS Neftemash OAO produced the modular cluster pumping stations, water-distribution points and blocks of combs for over 30 years, is considered. Despite the fact that the above typical scheme lives up to its purpose, it has drawbacks, primarily related to the lack of operational well after well injection control. A new solution to the problem of management in reservoir pressure maintenance systems based on technology of discrete injections, developed by Giprotyumenneftegaz OAO, is suggested.
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Designing of arrangement of deposits


G.Т. Kucha (DKC ZAO)
Application of the light cabling modular racks of domestic production in oil and gas industry branch

The article describes innovative product: light cable modular racks of domestic production. The first Russian design that can be able to expand the scope of using these goods and also being decrease costs for installation and operation. The author of the material was Sergey Prischepov who is specialist of DKC company, one of the leading manufacturers of cable management systems and enclosures in Russia and Europe.
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Transport and oil preparation


M.V. Lurie (Gubkin Russian State University of Oil and Gas)
Gas-liquid slug flow in horizontal pipeline

This paper describes a study of mechanism of simultaneous movement of gas-liquid slug flow in horizontal pipeline. Based on the laws of mechanics the expressions for velocities of gas and liquid flow are obtained. Found the relationship between rate and true gas concentrations, allowing computation of hydraulic losses in the flow condition being analyzed.
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The unknown facts from magazine "Oil-industry" history



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Petroleum industry abroad


N.M. Baykov (Institute of World Economy and International Relations of RAS)
Experience of implementing new technologies in drilling

 The application of e-driller, allowing to realize drilling more accurately and stably with less physical effort, is considered. It is noted that some progress has been made in automating processes of screwing and unscrewing of pipes of various diameters, as well as in monitoring the drilling processes. The methods of drilling with use of coiled tubing and development of a new drilling software system are described.
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