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Progress’19
- Conference date: November 5-8, 2019
- Location: Sochi, Russia
- Published: 05 November 2019
1 - 20 of 86 results
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Cost and Feasibility Evaluation of Oil & Gas Greenfields: a Search For the Best Tool
Authors S. Chizhikov, E. Dubovitskaya and A. KirillovSummaryEach oil and gas company in Russia has its own requirements to estimate accuracy at pre-FEED stage. There are various approaches to references frame, including those suggested by AACE International. There are no independent bodies in Russia establishing cost engineering standards at early phases of projects, therefore companies rely on internal demands. Companies are forced to tighten demands to estimate accuracy and validity by current industry trends such as: reduction of large discoveries and move towards small deposits; involvement of undeveloped reservoirs and tight oil reserves; and increase in a number of mature fields demanding integrated reengineering solutions. Until recently aggregative per unit indicators were widely spread, but a demand for minimization of an error range is urging new solutions that could deliver comparability of data and a basis for a comprehensive analysis. The paper aims at determination of key criteria for setting up correct methodological and approaches to cost and feasibility evaluation of oil and gas assets on stages “Identify” (Class 5 as per AACE) and “Define” (Class 4 as per AACE). Results of such work helps to better understanding of necessary automatization that which can speed up the evaluation process and increase an accuracy level of the estimates.
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Strategic Innovation in Hydrocarbon Exploration
Authors E. Lavrenova, A. Gorbunov, V. Kerimov and V. KosyanovSummaryExploration supplies 70–80% of economic value (EV) in the petroleum industry by means of acquiring geological information (GI), which diminishes risks and gains value by improving benefits, different types of decision-making processes, direct savings in terms of avoided costs, etc. 2D and 3D seismic data being the main source of GI at the early exploration need to be processed and interpreted, that is to say, transformed and incorporated into a geological model - basis of the Project evaluation. Despite the GI, obtained at the early exploration reduces key risks, still, there is significant potential for EV increasing. Conventional technologies and workflows are unable to provide such an improvement due to their crucial limitations. This work aims to demonstrate the possibility of strategic innovations in seismic interpretation for solving the above problems and improving the GI economic value.
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Technological Development to Enhance the Value of a Exploration Business Case
Authors A. Minich, Y. Berezovski, D. Metelkin, A. Timirgalin, G. Volkov and I. MukminovSummaryFor the tasks of geological and economic assessment the benchmarking method is widely used, which implies the assessment of the development of a field using methods and technologies that are the most applicable and successful at equivalent fields at the time of the assessment. Taking into account the speed of technological development for hard-to-recover reserves, in fact, the deposits are more likely not to be developed by the technologies and approaches that are laid in the assessment. Thus, the potential of some options is underestimated. In this paper an alternative approach is proposed, which implies a geological and economic assessment of options, taking into account the effectiveness of new technologies that are being introduced, which will become basic by the time the development of the estimated option begins. The performed calculations showed that the use of new technologies can increase the investment attractiveness of the option and get a rating of J#x003E; 1. This means that if there is an interesting project from the point of view of the reserves, it is possible to act as the customer for the development and drilling technology, which will provide a profitable case.
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Technological Advantages of a Generalized Layered Model in Seismic Data Processing and Interpretation
Authors K. Ovchinnikov, R. Anisimov and O. SilaenkovSummarySince seismic exploration studies layered environment where parameters change dramatically from layer to layer, and the properties within each individual layer are relatively unchanged, seismic data processing in the layered model concept seems completely natural. This description of the environment is often considered to be insufficiently general. This means only that it is necessary to expand the model of a single layer, which leads to a generalized layered model of the environment. Building of an environment model in such parameterization of the input data with such a description of the wave field gives a number of advantages, the main of which is the ability to obtain a stable, meaningful (from a geological point of view) solution even in very difficult seismic & geological conditions.
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Generalized Geological Model and Estimation of Hydrocarbon Bearing Prospects in the Northern Barents Sea
Authors G. Kazanin, S. Pavlov, A. Stupakova and S.Shkarubo ShkaruboSummaryThis paper considers the results of summarized integrated geophysical investigations that were carried out from 2006 to 2012. The investigations included common depth point (CDP) seismic reflection survey, over water gravity survey, and differential hydromagnetic exploration with a total work scope of 30 000 linear kilometers. The deep structural tectonic plan, the structural and lithofacies features of the sedimentary cover section on the basic reflecting boundaries, and the features of the seismic sequences and seismic sections on a depth scale have been studied, and geological oil-and-gas zoning of the Northern Barents shelf has been made. Seventy-nine local anticlinal highs have been revealed, and the zones with potential nonstructural hydrocarbon traps have been determined. Due to the lack of huge anticlinal highs in the northern Barents Sea region, nonstructural traps are of interest in studying and replacing the mineral raw material base of Russia, as well as for arranging marine exploration.
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Innovative Approaches to the Interpretation of Gravimagnetic Anomalies in the Study of Complex Objects of the Pre-Jurassic Complex
Authors A. Volkova, V. Merkulov, G. Grigoryev, A. Olyunin, V. Demin and M. TarakanovskySummaryThe paper demonstrates an innovative approach to the interpretation of gravitational and magnetic anomalies for the study of pre-Jurassic deposits. The model example (a detailed synthetic geological model that takes into account the geological and geophysical features of the objects under study) shows the expediency of conducting detailed gravimetric and magnetometric surveys in conjunction with seismic exploration, which allows to clarify the location of perspective areas for exploration and further development of the field.
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Improving the Efficiency of Area Exploration Projects Through the Preliminary Modeling Stage
Authors V. Gulin, G. Grigoriev and M. SalishchevSummaryThe article shows innovative approach to optimizing the process preparation of exploration projects, which based on modeling. The stage of preliminary modeling of the interest objects provides maximum efficiency of the entire cycle of exploration.
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The Study of the Deposits of the Tyumen Formation. Experience of Trial, Error and Achievement
Authors T. Kiryanova, O. Kirzeleva, M. Fedorova, R. Kopenkin, D. Klyazhnikov and A. KaluginSummaryTyumen series within the West Siberian Petroleum Province contain considerable oil resources (about 3 billion tons of the current recoverable reserves). Degree of their depletion is only 7%. Until recently, the reason for low interest in reservoir development was the frequent disconfirmation of geological models and drilling of numerous dry and marginal wells. Despite the considerable amount of accumulated information, including regional studies, and conclusions that in the vast territory the Tyumen series were formed in continental settings of alluvial plains and meandering channels, conceptual and three-dimensional digital models are still created with large assumptions/simplifications and do not reflect the complexity of pay zone structure. That is one of the reasons why the subsequent drilling does not confirm geological models. By the example of J2 reservoir, the work presents an experience of transition from simple to more complicated geological model as a result of reprocessing and integrated interpretation of geological and geophysical information.
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Optimization of Subsoil Licensing Programs
Authors M. Bagaeva and P. MelnikovSummaryBased on the analysis of the subsoil licensing program and its results in the North-West Federal District in the period from 2009 to 2018, ways were proposed to optimize the subsoil licensing programs by taking into account economic criteria at the stage of the formation of subsoil licensing programs and planning the timing of trading, taking into account the investment attractiveness of license areas.
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Polyzonal Adaptive of Processing Vibrogram as a Promising Way to Improve the Quality and Informativeness of Modern Seismic
Authors Y. Dolgikh, E. Kaygorodov and A. GlebovSummaryTo improve the quality and information content of the results of the use of high-performance vibro-seismic technologies, it is necessary to solve a number of problems related to the specifics of the use of high-performance technologies and the vibro-seismic method (increased noise, amplitude and frequency distortion, the presence of harmonics). Traditionally, these problems are solved by changing the parameters of the method of vibroseismic works in the direction of increasing the statistical effect of the interference excitation (reception) systems. An alternative way to improve the quality and informational content is the use of specialized techniques of processing vibrogram. Currently, due to the General level of scientific and technical development, the Preservation and processing of the original vibrogram is not a problem. At the same time, there is no integrative, complex technology of specialized vibrogram processing in order to improve the quality of the correlogram. Currently conducts research related to the development and testing of elements of said integrated technologies. In these studies, including the present report describes the first steps in the development of technology for special treatment of vibrogram.
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Effect of Tectonic Processes on the Oil and Gas Potential of Various Regions
Authors N. Nassonova and A. FischenkoSummaryA controversial issue is described related to the formation of shear fault zones which identified the most promising regions in the Aptian, Albian, Cenomanian, and other Upper Cretaceous sediments in West Siberia (WS). A hypothesis of piston-like filling of Samotlor Field with hydrocarbons is proposed. The cause of tilted oil-water contact in the area of Krasnoleninskoye Field is described.
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From Integration of Geosciences, Engineering and Economics towards Efficient Exploration Decisions
Authors M.K. Qureshi and D. SurovtsevSummaryIn this presentation we are looking at various components of efficient exploration decisions through the prism of integrated modelling. The starting point for our analysis is the exploration process triangle listing data and products that oil and gas explorers gather, create and evaluate to make an informed drilling decision. We argue that the term ‘integrated modelling in exploration’ all too often is understood in a rather narrow sense as “stratigraphic, structural and petroleum systems modeling”. Naturally such combined approach is a significant improvement versus a silo study as one may be surprised to find out how many companies equate exploration with seismic interpretation only. However, it only addresses about a half of the exploration process triangle components. The best practices in today’s industry drive to improve exploration efficiency call for a holistic risk, resource and value assessment of undiscovered petroleum resources, an integrated workflow that provides the necessary link between the outcomes of geomodelling work and the exploration portfolio management needs of corporate decision makers. The workflow relies on a proven suite of tools and methods that became de facto exploration industry standard. It enables to carry out 360-degree prospect ranking using modern Multiple-Criteria Decision Methods (MCDM).
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Scientific and Technical Development of Vertically Integrated Companies in the Transition to the Digital Economy and the 6th Technological Order
Authors V. Kuznetsov, S. Sanin and Y. DolgikhSummaryThe obvious development trend associated with the transition to the 6th technological mode is the digitalization of all spheres of activity, including economic. The introduction of digital technologies is characterized by rapid dynamics and causes a sharp acceleration of scientific and technological development. In the oil and gas industry, despite its traditional conservatism – digital technologies are very popular. Western oil and gas companies – the leaders who were able to recognize and “lead” this new technological and digital trend – are already fully enjoying the fruits of their competitive advantages. Therefore, domestic oil and gas companies interested in the rapid reduction of the backlog in scientific, technological and digital development, it is necessary in a short time to develop road maps of digitalization and introduction of new technologies in order to take over the best practices and secure a place in the leaders of the world’s digital oil and gas industries in the long term. Achieving such ambitious goals requires strategic forecasting and planning, as well as a systematic approach to managing scientific, technological and digital development. The report presents the basic principles of forecasting, planning and management based on the analysis and synthesis of information from open sources - in the context of scientific and technological development, digital transformation and the introduction of new technologies.
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New Petroleum Exploration Opportunities in the Pre-Ural Foredeep (the Republic of Bashkortostan)
Authors R. Bakirov, N. Amelchenko, V. Minkaev and I. YagfarovSummaryComprehensive analysis of a wide range of G&G data revealed most promising petroleum exploration opportunities within the Pre-Ural Foredeep of the Republic of Bashkortostan, best practices are recommended for generation of new drill-ready exploration prospects.
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Analysis of Opportunities for the Development of Independent Exploration Companies in Russia
By D. SazonenkoSummaryIn many countries of the world, small oil and gas companies are serious players in the exploration market, occupying a considerable share. In Russia, the role of independent exploration companies is rather small. The analysis of the factors that affect the ability of their success is performed in the paper. The main factors discussed are the legal status of the small exploration companies, government support, and exploration rights market maturity, funding, information and service availability.
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Considerations for Choosing the Parameters of the Technique and Quality Criteria of Seismograms in the Transition to High-Density High-Performance Surveys
Authors Y. Dolgikh and V. KuznetsovSummaryCurrently, in the practice of seismic studies there are trends leading to a revision of the existing system of quality control of the original seismograms:- implementation of high-performance full-azimuth 3D - systems of high density and multiplicity; - a radical increase in the number of receiving channels, the rejection of the grouping of receivers with a multiple decrease in the step between the receiving channels; - reduction of the absolute energy of a single impact with a compensatory increase in the number of impacts themselves; - relative reduction of the share of explosive seismic surveys in favor of surveys with vibration and pulse sources. The logic of the traditional approach is to select a signal against the background of noise (random, regular) with acceptable nonlinear distortions of the reflected wave spectrum. The logic of the new approach is to register the undistorted wave field of the signal and noise with the initial ratio of amplitudes, energy, spatial discreteness and multiplicity, providing the necessary quality of the useful signal in a wide frequency range at the processing stage. The substantiation of methodological parameters and criteria for assessing the quality of modern research is a non-trivial task, since it requires the preliminary identification of the most significant factors and the generalization of accumulated statistical data on the quality of the results obtained for specific conditions and traditional methodological schemes. The report presents some theoretical and empirical assumptions that allow using the idea of energy equivalence in the design of modern seismic studies
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A Fresh Look at 3D Seismic in a Brownfield Exploration Play
Authors H. Lauferts, I. Nizhegorodova and I. NovikovSummarySeismic inversion is a geophysical workflow that is routinely used by geoscientists in many basins around the world in Exploration & Production companies. The higher quality well logs (especially p- and s-wave sonic data) can be obtained for the inversion, the better the results. Oil and gas companies compile large rock property databases to aid inversion in exploration, when only few or no wells are available to support a new hydrocarbon play in an undrilled geological setting. The paper describes how seismic inversion was applied in brownfield exploration in the West Siberian Basin. Here, the operator tried to stop or better reverse the oil production decline.
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Initiation of New Projects and Partnerships for the Development of Russian Oil and Gas Resources
By D. MilyaevSummaryThe expansion of the mineral resource base of the company can occur both through the acquisition of new licenses, and by entering into existing projects through the creation of partnerships or the purchase of rights to use subsoil. This article discusses the investment opportunities of the oil and gas sector and the obstacles to their implementation, analyzes the reasons for the non-optimal behavior of companies during business development in Russia, and outlines the requirements for a systematic approach to the initiation of new projects.
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Reducing Exploration and Development Risk by Diffraction Imaging
By E. LandaSummaryWhile production from old and conventional fields on the decline, oil, and gas companies are looking into increasingly challenging areas—deep water, subsalt, and in unconventional carbonate reservoirs. Seismic images in these environments are often of reduced quality, and new innovative seismic technologies are needed to reduce risk in these settings. Fault and fracture identification is, probably the biggest challenge for the seismic in carbonate and unconventional reservoirs. A major challenge in carbonate environments is to map heterogeneities which have a strong impact on oil and gas production. In many carbonate reservoirs, matrix porosity contains the oil in place but the permeability is mainly provided by fracture corridors. In other reservoirs, the oil in place is found primarily in karstic caves. Even using the most advanced imaging and inversion techniques, it is extremely difficult to identify small faults and characterize the distribution of fractures. Well information can successfully locate faults and provide directional trends of fractures only near the wells. Unfortunately, the reliability of detection small and medium scale (less than the seismic wavelength) heterogeneities and possibility characterize their properties in conventional processing and imaging is generally low. Conventional imaging methods which are biased towards smooth continuous reflectors are intrinsically limited when confronting challenges in detection and delineation of these subsurface elements. Seismic migration treats reflection and diffraction differently (Khaidukov et al., 2004). While diffracted waves are focused to a diffraction point at depth, the wavefront of the extrapolated reflected wave is not focused but is tangent to the reflector. Focusing of the reflection would occur at the imaginary source point. In the migrated section, we see reflectors as an envelope of the secondary fictitious diffraction. As a consequence, interpretation of seismic images is of limited use for the characterization of subsurface singularities and discontinuities. In regular migration and inversion, scattered wavefronts from small scattering objects are usually masked by the stronger reflection energy and noise. Small-scale subsurface elements usually are not included in the estimated velocity model, and they may, therefore, be considered as defects or damaged regions of the velocity model. Information about structural discontinuities and small-scale subsurface elements is coded in diffracted waves, and they can be detected by diffraction imaging (Landa, 2012). Diffraction imaging aims to focus the diffraction energy into its origins, namely, into subsurface discontinuities and local heterogeneities which created the registered diffraction wavefield. The separation between reflective and diffractive components of the total wavefield is at the core of the diffraction imaging.
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Uncertainty Analysis of Two-Dimensional and Three-Dimensional Modeling in Exploration Context Based on Multivariate Computational Experiment
By A. DegterevSummaryThe same geological object can be modeled both in two-dimensional space and in three-dimensional one. Currently, both three-dimensional and two-dimensional modeling is carried out using specialized programs (often the same ones) and includes the same stages of import and raw data preparation, performing cross-well correlation, so the construction of a 2D model is just as laborious as a 3D one. In this situation, the issues of reliability of the models, how the model is similar to the studied object come to the fore. Two-dimensional geological modeling has a number of known limitations, not allowing taking into account the vertical heterogeneity of the simulated object, the vertical separation of reservoir layers and their communication in space, as well as data for wells located outside the saturation circuit. Three-dimensional modeling by introducing an additional dimension increases the complexity of the model and the number of uncertainty factors. Since the reliability of the created models significantly affects the rationality of investment decisions, the ratio of the contribution of uncertainty factors of two-dimensional and three-dimensional modeling requires careful study. This work offers one of the ways to solve this problem, based on the formulation of a series of multivariate computational experiments.
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