bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of Viscous Oil Emulsions at Various Rations of Treating Oils with Extreme Temperatures of Solidification
Authors: GRISHAGIN A. V. , KALININA O. S. , MELOSHENKO N. P. , SHERSTNIKOVA Yu. E. 
Published: February 2011

Abstract
Of late there is a sharp increase in the area of oil field development that contains the reserves due to several reasons referred to as hard-to-recover ones.
In this connection there is expediency in conducting severe studies, both from the standpoint of geological conditions of their formation and from the standpoint of the reservoir and its fluids.
One of the major objectives while performing viscous and wax field development program that are characterized by abnormally high temperature of solidification is the performance of studies related to rheological properties of water/oil emulsions during the process of their dehydration and their further transportation in a mixture with other types of recovered products.
The recently published materials on rheology of water/oil emulsions are mainly based on system modeling that uses distilled water and what is more important, within the frames of negative oil solidification temperature range [1]. On the other hand, the requirements towards the quality of preliminary dehydration are usually governed inside a wide interval (up to 10-20 of %) of residual water contents and cannot serve as a benchmark to select the degree of well product dehydration in specific cases.
The Thermogas Treatment of the Bazhen's Series Deposits
Authors: Grayfer V. I. , Nikolaev N. M. , Kokorev V. I. , Bokserman A. A. , Chubanov O. V. , Uschakova A. C. 
Published: February 2011

Abstract
The work aim is to create an innovative complex of thermogas treatment which allows to involve in industrial development nonconventional hydrocarbonic resources of the Bazhen′s series.
Nonconventional oil resources of Russia are known to be ultraheavy oils and bituminous sands, combustible shales and source beds of the Bazhen′s series (BS). There are ultraheavy oils on the Yaregsky field. Effective exploitation has been created by thermal methods and is being developed successfully. These methods can be adapted for exploitation of the natural bitumen fields which is in the greatest concentration in Tatarstan. where about 450 oil deposits are discovered and oil reserves are estimated in 7 billion tons.
Another kind of nonconventional hydrocarbonic resources - combustible (petroliferous) shales - is presented in Russia by 80th oil fields which are basically in the European part of the country, in Republic Komi, in the Volga region. Ways of development and refining of combustible shales are well known. These are open ways at small depths of occurrence and interbedding combustion - at underground development.
Design of Equipment and Technologies using the Down-hole Steam and Gas Generator Based on Monofuel Solution
Authors: Graifer V. , Nikolayev N. , Kokorev V. , Orlov G. , Bugayev K. 
Published: February 2011

Abstract
The objective of the paper is designing of equipment and technologies to stimulate viscous and high viscosity oil deposits by steam and gas using monofuel. The activities were conducted as part of the governmental programme. The specific feature of the technology lies in the use of a steam and gas generator being installed in the bottomhole of the well.
Progressing development of viscous and highly viscous oil (VHO) deposits is becoming an issue of the day with the recovery of light oils.
One of the ways to enhance the efficiency of thermal VHO development methods is generation of a thermal agent directly in the bottomhole (1). To implement such technology the OJSC “RITEK” specialists as part of the governmental programme have performed works on designing a down-hole steam and gas generator as well as surface and down-hole equipment system to ensure its operation.
Optimization of Produced Water Dumping Using Conceptual Model of Field Infrastructure
Authors: Lomovskikh S. , Smyslov V. , Sukhov E. , Shashel V. , Kozhin V. , Nekipelov Y. 
Published: February 2011

Abstract
The systematic and structured approach towards field development that is actively developing now has resulted in occurrence of a series of conceptual tasks resolved within the framework of one field or the whole region [1]. The papers dedicated to conceptual and integrated designing are considering these tasks at a level of one field [2, 3] and do not cover the problems arising within the framework of joint development of group of oil fields. The given paper presents the approach towards the solution of optimization tasks of various complexities within the framework of oil-producing region. One of these tasks is presented by a problem how to dispose the increasing volume of produced water from the whole group of oil fields located at Samara region and connected to some extent by common corridors for surface lines [4]. The given task has a set of features characteristic just for this region, such as incompatibility of formation waters and restrictions for water injection at water disposal sites.
In order to resolve the above-stated tasks the authors of the given paper present the regional conceptual model of surface facilities for southern group of OAO ”Samaraneftegas” fields that include 57 fields and 27 field objects. Every field object of the model is described using a simplified pattern to work in various modes. The model allows analyzing and optimizing at the basis of dynamic programming the joint operation of field and linear objects to maintain the planned levels of fluid production and fluid injection remote horizon planning. The open object-guided programmed code describing conceptual model, easily allows complicating of its structure, increasing the detailing and accuracy of decision taken, as is required.
Using the regional conceptual model of surface facilities shows the solution of an urgent task to optimize the disposal of formation water produced at the southern group of OAO ”Samaraneftegas” fields.
Integration of Production, Geological and Geophysical Data While Building Geological Models of Oilfields
Authors: Kolesnikov . S. , Shipenkov . A. , Ignatov . S. , Kostuchenko . V. , Cherkas . O , Tsibizova . N. , Babuhina . A. , Mezhnova . Y. , Roschin . V. 
Published: February 2011

Abstract
The paper presents examples of integration of production, geological and geophysical data at different stages of geological modeling: input data systematization, well-logs normalization, interpretation of lithology, calibration to dynamic data. The goal of such integration is to reduce labor efforts on construction of geological models and subsequent history matching of hydrodynamic models comparing to traditional approach to modeling.
Integrated Approach of Field Development System
Authors: Shoshin A. A. , Valiev A. K. , Chuprakov I. V. 
Published: February 2011

Abstract
The paper describes the developed method called “modified reservoir quality map ”. The paper includes the theoretical base of the method, the methodology for quality map construction and mathematical operations over the map. Definitions for well and well network qualities are presented. The work includes a description of the working principle of our developed software for mapping the quality of the reservoir. Finally, the results of applying the method for three fields with examples of wells (that are in “good” and “bad” zones) are presented.
Evaluation of Remaining Recoverable Reserves in Water-Flooded Areas
Authors: Kats R. M. , Volgin E. R. 
Published: February 2011

Abstract
The localization of oil reserves in water-flooded areas is considered. Despite a high watercut of 90% or more well production, individual regions of the reservoir can retain recoverable oil. These reserves may have rather high (up to initial) oil saturations. Developing these reserves even partly will deliver a valuable incremental field production. Oil field development experience shows that recovery factor can be comparatively low, even at the late development stage. The issue of additional recovery is illustrated by the Bavly oil field experiment which ran for 30 years. This experiment included high watercut wells that were shut-in for a long time and subsequently brought back into production, and some of the wells yielded tens of thousands of tons of crude. Moreover it was established that remaining reserves can be located in certain areas.
So, the problem of finding the location of such areas needs to be solved without resort to large-scale experiments like this. If we could do this, the scope of late stage infill drilling could be reduced thus preventing wells being drilled in swept zones.
Currently the issue of finding high oil saturation zones is generally solved through reservoir modeling. The issue of the accuracy of modeling oil saturation distribution is of primary importance for a reservoir engineer.
There are a variety of numerical methods for modeling oil and gas field development processes widely in use, but are not sufficiently reasonable for this goal. In the general case, heterogeneous media cannot be described by averaged equations with scientifically based pseudorelative permeabilities.
The inconsistency of using pseudo relative permeabilities for simulation of the heterogeneous reservoir development is illustrated by numerical experiment.
The pseudo relative permeabilities technique enables forecasting the field production and injection rates and cumulatives only. The reliability of the prediction of the oil saturation distribution turned to be unsatisfactory. This means that currently used pseudo relative permeabilities techniques do not allow reliable detection of bypassed oil. At the moment, the only efficient method of locating unrecovered oil reserves is integration of advanced reservoir study methods combined with geological modeling and reservoir simulation.
Possibilities to Use Basidiomycetes to Rise the Efficiency of Oil-Contaminated Soil Remediation
Authors: Kokanina A. V. , Vinokurov V. A. , Gubkin I. M. , Leont'yeva M. I. , Barkov A. V. , Krasnopolskaya L. M. , Gauze G. F. 
Published: February 2011

Abstract
Features of basidiomycetes to improve remediation of oil-contaminated soil
Ability of definite strains of basidiomycetes to use oil components as the source of carbon in their lifesustaining activity is shown in the result of screening. Efficiency of these strains to remediate oil polluted soil was studied in laboratory conditions. It is shown that the fungi strains selected in the screening actively form colonies on oil-polluted substrates. Growth of air mycelium is possible not only on an oil- saturated substrate, but on a surface of an oil film as well. Besides, ability of the fungi to grow on a soil using petroleum hydrocarbons as the only source of carbon is shown. Mycelium is observed to grow both on the surface and in the bulk of the substrate. Ability to utilize hydrocarbons is shown in a model experiment for the following strains: basidiomycete belonging to the genus Trametes utilizes up to 39% with respect to control level of oil content in the soil and basidiomycete genus Fomitopsis utilizes up to 22%, respectively. Ability of basidiomycetes strains to maintain high oil oxidizing activity in the presence of natural soil microflora confirms their potential to be used in techniques of recultivation of oil-polluted soil both as a self-consistent method of bioremediation and in combination of other techniques of oil- polluted soil cleaning.
Geological Features of the Deep Horizons (Lower Part of the Jurassic Section and Pre-Jurassic Basement) of Tomsk Region: Examples of Mayskoye and Festivalnoye Fields
Authors: Pinous O. , Ivanov D. , Gostev M. , Naymushin D. , Popov A. 
Published: February 2011

Abstract
This paper describes a comprehensive analysis of the 3D seismic data, well logs, and cores from productive intervals of the Mayskoye and Festivalnoye fields. The analysis covered the sandstone layers of the lower part of Tyumen Formation and the fractured reservoirs of pre-Jurassic basement. The goal of this study was to build geological models that will serve as a basis for field development planning of the low-permeability, low-porosity reservoirs of the described intervals.
First, we completed a structural and tectonic analysis, i.e. identified the main mechanisms of structural and tectonic evolution. At the Festivalnoye field, the main anticline structure is a pop-up fold that was formed by displacements along a major regional-scale wrench fault. This conclusion guided the structural interpretation, and in particular, resulted in more reliable fault recognition and tracing. The fault tracing widely involved the Ant Tracking function. The revealed direction of a regional stress (interpreted from FMI and sonic scanner data) has enabled a planning of the optimal trajectories for horizontal wells that is of special importance when hydraulic fracturing is involved.
Second, we interpreted depositional environments and facies distribution of the Jurassic sandstone layers. In the Mayskoye productive interval we have identified two major parts of the section corresponding to different depositional systems: The lower section (zones J15—J16) was deposited in a braided river depositional system that fills the pre-Jursassic erosional relief. This environment was identified using the results of sedimentological core descriptions. The upper section (zones J12—J14) was deposited in a meandering river depositional system, with depositional cycles (sequences) topped with coals. This part of the section demonstrates higher heterogeneity compared to the lower unit deposited in braided rivers.
The results of facies analysis provided grounds for the selection of optimal algorithms for geological modeling and adequate honoring of the reservoir heterogeneity. The conclusion about facies and the evolution of fluvial sedimentation for the lower part of the Tyumen Formation is presented first time for the southeastern region of Western Siberia.
Recoveries of Heavy Oil and Bitumen Techniques With the Radio Frequency Electromagnetic Irradiation
Authors: Kovaleva Liana , Davletbaev Alfred , Minnigalimov Rais 
Published: February 2011

Abstract
Production improvement of heavy-oil/bitumen recovery by using Radio-Frequency (RF) Electromagnetic (EM) fields present great practical interest. Most of the material of the oil industry - oil-saturated reservoir, formation fluid, oil, bitumen and then- components (resins, asphaltenes, paraffin, oil-water emulsion, high-viscosity and extra-heavy crude oil) in their electromagnetic properties are non-magnetic dielectric materials with low electrical conductivity. If the electromagnetic field impacts these materials, electro- thermo- and hydrodynamic phenomena take place. The RF-EM fields in the form of waves can penetrate deeply enough - from fractions of a meter to several hundred meters - into oil and gas technological working media
The paper deals with the impact of EM fields on the heavy-oil/bitumen sand deposit and electro-, thermo- and hydrodynamic processes control for enhanced oil recovery. The present paper discusses the technique of RF-EM heating of an oil-bearing layer combined with solvent injection, aimed at increasing heavy and extra-heavy oil recovery rate. Such combined technology expands the displacement area and allows a deeper heating of the layer. This method increases the technical and economic efficiency of field development by treating a producing well in three stages. At the first stage, the well operates as in injector to inject a solvent with simultaneous RF-EM exposure. At the second stage, the well is suspended to ‘stay' without any treatment. Finally, the well is re-commissioned to produce from the layer.
The paper presents a mathematical model for this three-stage iterative process, which describes transfer of mass and heat within the ‘well/ reservoir/ rock environment' system. A numerical simulation was also employed to study the effect of heavy oil production and the relative energy balance. The model estimates the optimum solvent volume and stage duration; the paper also gives a comparative analysis of calculation results for two cases: the one using the suggested combined technique, the other using constant heating without solvent injection.
Experience and Features of Simultaneous-Separate Exploitation Systems Application on SLA Priobskoye Field
Authors: Baryshnikov A.V. , Kofanov O.A. , Sidorenko V.V. , Brezin A.M. , Kremenetskiy M.I. , Kokurina V.V. 
Published: February 2011

Abstract
This paper describes experience gained through the field pilot exploitation of completion systems designed for simultaneous- separate exploitation (SSE) of multihorizon wells in conditions of South License Area (SLA) of Priobskoye oil field. Possibility of particular formation parameters monitoring and control is the main benefit of such systems.
Overview of completion systems for SSE, ways and technologies used for control of multihorizon wells, experience of such systems application and opportunity for future application are also discussed in this work.
Two main points are considered: Simultaneous Separate Production (ОР Д- Russian abbreviation) for production monitoring and control of multihorizon wells and Simultaneous Separate Injection (OP3 - Russian abbreviation) completion system for water injection control in multihorizon injection wells.
A special attention was paid to the long term monitoring of each penetrated formation on different flow regimes. The monitoring was conducted with downhole gauges (flow rate, temperature and humidity). Opportunity of such monitoring is one of the most important SSE advantages.
Described technologies are part of the field intellectualization project. Purpose of this project is identification of the most effective system which enables control and surveillance of multihorizon wells. As a result, the unified system for the exploitation parameters control and monitoring, based on the observation wells network will be created.
Influence of the Linear Filtration Law Breach on the Gas-Liquid Mixtures Influx Into the Well
Authors: Karnauhov M. L. , Skrylev S. A. , Khlus A. A. 
Published: February 2011

Abstract
There are numerous technical papers on fluid flow analysis which address, both Darsi's non-Darsi's filtration law. As for gas wells, as a rule, the quadratic correspondence-«depression squared-flow rate»-is used for the influx calculation.
Practical examples of the well survey (at the Yamburg and other fields in Tyumen) show, that the production curves, by no means always take the shape of a line on the graphs «depression squared-flow rate».
The filtration law breach does not always take place, and if a breach of the law occurs, it happens only in the near region of the well (at the distance of 1,5 ÷ 15 m).
Our calculations also show, that the production curves distortion often occurs not due to the filtration law breach, but due to the fact that a considerable influence of a number of parameters changes is not taken into account: from the reservoir and borehole pressure: such as supercompressibility factor, viscosity, volume factor.
The pseudopressure and pseudotime functions introduction to the calculation while processing the pressure build-up curves improves the calculation results insignificantly, as the corresponding averaging procedures of the mentioned parameters are carried out at the same time.
The influences of all the pointed out factors on the production curves behavior, as well as during the pressure build-up curves measurements in the wells with the hydraulic fracture and in the horizontal wells is particularly special.
The practical examples are given, showing a considerable difference of the reservoir calculation parameters, when the changing of the supercompressibility factor, viscosity, volume factor, while the pressure is taken into consideration.
Shale Gas Development in Canada: The Regulatory Framework
Authors: Beaudoin Y. , Serry J. K. 
Published: February 2011

Abstract
In the fall of 2010, shale gas exploration and development in Canada is just getting started. Engineering advances are making unconventional gas plays more attractive. Provincial governments are looking to tap the economic benefits. Regulators are adjusting existing oil and gas regulations or drafting entirely new legislation. This paper covers a selection of topics for each of the seven Canadian provinces where shale gas development has started or is about to begin. So far, regulation of shale gas is not very different from the regulation of conventional gas exploration and development. Interest groups and regulators are following U.S. trends.
Fundamentals of Methane Hydrate Decomposition
Authors: Ripmeester J. A. , Alireza S. , Hosseini B. , Englezos P. , Alavi S. 
Published: February 2011

Abstract
Constant energy molecular dynamics simulations are used to study the role of mass and heat transfer in the decomposition of methane hydrate. The rate of methane hydrate decomposition in a constant energy simulation is affected by heat and mass transfer arising from the breakup of the hydrate framework and release of the methane gas into the liquid phase. As the hydrate undergoes endothermic dissociation, temperature gradients are established between the remaining solid hydrate and the solution phases. Hydrate dissociation occurs in a concerted fashion with rows of sI cages parallel to the interface decomposing simultaneously. This leads to the release of large amounts of methane gas near the solid-liquid interface which can form bubbles that affect the rate of mass transfer between the phases. These phenomena can affect the rate of methane hydrate decomposition in natural methane hydrate reservoirs.
A Novel Means of Proppant Consolidation
Authors: Wiggins C. B. , Zhang K 
Published: February 2011

Abstract
During fracturing operations, the most important objective is the successful placement of proppant into fracture channels within hydrocarbon bearing formation zones. This is done with the intent of creating a high conductivity channel, allowing hydrocarbons an open path from the far reaches of the reservoir into the well bore area.
However, once proppant has been successfully placed into the formation, it is critical that the proppant remain in place to maintain this high conductivity channel. Achieving this can be complicated by substantial pressure differences between the extremities of the fracture channel and the near wellbore area, with a tendency of flow towards the lower pressure area around the wellbore. The most common means of remedying this problem currently is treating proppants with a resin coating. This coating softens under pressure and temperature, and provides a strong amount of cohesive force to the proppant. However, there are several limiting factors to these types of resin-coated proppants. The most daunting factor in the use of resin-coated sands is likely the price, which can be in excess of four times the price of untreated proppant. This often leads to frugality in the use of resin coated sands, often being utilized only in tail end stages of fracturing events. Another detriment to resin-coated proppants is their temperature and pressure sensitivity. Shallow wells, which often exhibit low pressure and temperature, require substantial amounts of chemical activators to allow resin sand to "set up". These activators can often have a negative effect on fracturing fluids. Extremely cool wells may not even be feasible for resin-coated proppants, requiring excessive amounts of activator. This paper details the development and use of a novel chemical-based system as a means of proppant consolidation. The chemical can be pumped on-the-fly, during the fracturing event, and does not require special types of proppant. It is compatible with most water-based fracturing fluids, and has been used successfully in a number of applications, especially in extremely large, multizonal horizontal applications, with a great deal of success.