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Cherenkova, M. A. (RN-Shelf-Arctic LLC) | Myatchin, O. M. (RN-Shelf-Arctic LLC) | Kleshchina, L. N. (RN-Shelf-Arctic LLC) | Solomatina, E. A. (RN-Shelf-Arctic LLC) | Obmetko, V. V. (Rosneft Oil Company) | Reidik, Yu. V. (Rosneft Oil Company)
The article has been prepared by specialists from Rosneft Oil Company and the Reservoir and Petroleum Engineering Department of RN-Shelf-Arctic LLC, a subsidiary of Rosneft which carries out geological research and hydrocarbon exploration within the Rosneft’s license blocks upon the Arctic and Far Eastern shelves of the Russian Federation. The article provides an overview of structure and depositional environments of the Permian clastic deposits within the marine extension of the Kolvinsky megaswell. There are large oil fields (Vozeiskoye, Kharyaginskoye, Yuzhno-Khylchuyuskoye) within onshore part of this vast area of oil and gas accumulation. These fields have wide stratigraphic range of oil-bearing capacity from the Lower Devonian to the Triassic. The importanсе of this research is associated with the proven petroleum potential of the Permian deposits within Timan-Pechora petroleum basin. Generalization of the previous results and comprehension with new detailed 3D seismic interpretation allowed the authors to: 1) detail the geological structure and depositional environments of the Permian clastic deposits; 2) identify and map the most perspective deposits that can be considered as a potential hydrocarbon reservoir; 3) reduce geological uncertainties associated with the presence and quality of the Permian clastic reservoir. The article is based on the results of interpretation of 3D and 2D seismic data, geological and geophysical data of adjacent areas, as well as regional geology of the Pechora Sea.
Offshore exploration on the shelf is a complex and expensive task, where the success depends on a comprehensive study of technical, technological, administrative, environmental, industrial safety issues and other aspects of the work. This paper presents an example of the successful implementation of 3D seismic survey by Rosneft in the extreme shallow water of the Pechora Sea, based on the use and application of an integrated project planning and control system, taking into account risk analysis, aimed at minimizing negative factors and increasing work efficiency, and also ensuring compliance with and fulfillment of industrial safety, labor and environmental protection requirements in the implementation of offshore projects. The main elements of an integrated system from the planning stage to the full completion of the work are considered. Stages of planning and execution of 3D seismic surveys in the extreme shallow water of the Pechora Sea shelf are discussed. With the help of seismic modeling, the substantiation of the method of field work was carried out from the point of view of solving specific geological problems. Based on the analysis of the market, the features of the choice of vessels and equipment for performing seismic operations are presented, taking into account the limited market of contractors and vessels in the Russian Federation, as well as their capabilities to perform work at minimum depths. Early elaboration of the issue of the scheme and the shooting priority, taking into account the existing obstacles, difficulties and limitations, allowed to increase the optimization of productivity and minimize the downtime of the vessel. An effective approach to obtaining high-quality field materials and results of fast-track processing in a short time is shown. The implemented HSE management system, including a complex of epidemiological measures, made it possible to ensure the implementation of seismic exploration without incidents.
Zakharova, O. A. (Gazpromneft NTC LLC) | Zagranovaskaya, D. E. (Gazpromneft NTC LLC) | Vilesov, A. P. (Gazpromneft NTC LLC) | Rasskazova, S. N. (Gazpromneft NTC LLC) | Stepanova, V. S. (Gazpromneft NTC LLC)
The article is devoted to the results of hydrocarbon prospects estimating on the Pechora sea shelf within the Gazprom Neft license areas. The area was clustered according to its geological and geophysical features. More than a hundred prospective objects are defined in six oil and gas complexes. Overall estimated hydrocarbon potential is more than 2,525 billion tons. The assessment is based on integration of regional 2D seismic data, new 3D seismic data from the three license areas, as well as core and outcrops data from adjacent areas. Based on sequence stratigraphic analysis, the reservoir properties and other parameters of the prospective objects were clarified. The promising objects are rated on the basis of key geological and geophysical indicators. Moreover the location for appraisal drilling for subsequent exploration is proposed. In addition to determining oil and gas content of Triassic, Permian and Carboniferous reservoirs, it is spoken in details about prospects of deep complexes. These complexes are reef traps of the Upper Franian, terrigenous reservoirs of the Middle Devonian and Prague stage, hypergene carbonate reservoirs of the Ovinparmian horizon (Lower Devonian) and Ordovician-Silurian carbonate rocks. Aiming to discovering giant fields on the Arctic shelf one of the technological challenges has been identified - drilling in difficult climatic conditions to prospective horizons at depths of more than 4.5-5.5 km. The proposed exploration and R&D program allows to determine the optimal well location and to solve non-standard technological challenges to achieve this ambitious goal.
Malysheva, E. O. (RN-Shelf-Arctic LLC) | Volfovich, E. M. (Rosneft Oil Company) | Gorbunova, S. A. (RN-Shelf-Arctic LLC) | Nikiforova, O. G. (RN-Shelf-Arctic LLC) | Nikishin, V. A. (RN-Shelf-Arctic LLC)
The publication deals with the results of facies analisys and depositional environments reconstructions for the Permian - Jurassic sequences within the area of the eastern Barents Sea, including it's southern part, the Pechora Sea and adjacent onshore areas of Rosneft Oil Company license areas. The research was based on revision, cutting or slabbing and sedimentological study of the core and logs interpretation from 21 wells. Compilation of biostratigraphic information and examination of ichnofossils, structures and textures of the rocks provided facies identification and environmental interpretation. Non-marine alluvial to coastal plain, marine near shore to relatively deep water facies has been identified. Cruziana и Skolithos ichnofacies, association of Macaronichnus and association typical for brackish-water have been recognized. Permian siliciclastic interval is strongly dominated by regressive deep water to shoreface and deltaic successions. In the Triassic tidal, brackish water and non-marine with alluvial facies were widely spread on the most part of the eastern Barents Sea while northward marine influence increased. Jurassic interval, best represented by the core, is characterized by the tidal to estuary deposits in the Lower Jurassic, shoreface to open marine - in the Middle Jurassic and relatively deep water marine - in the Upper Jurassic. Identified in core and logs facies are regarded as the basis for seismic facies interpretation and space prediction of hydrocarbon bearing plays of Rosneft Oil Company.
The PDF file of this paper is in Russian. Regional geological researches of the Rosneft Oil Company were focused on the study of various petroleum plays in the offshore of the Pechora oil and gas basin, including one of the most perspective of them: Middle Carboniferous - Lower Permian carbonate play. This play is of especial interest because of several confined discoveries of oil and gas fields. Middle Carboniferous - Lower Permian carbonate play can provide increasing the hydrocarbon resources of Rosneft Company at the areas of current exploration. Basing on seismic identification and sedimentological studies of well data distribution pattern of build-ups in the Pechora sea area has been profoundly analyzed. Paleoenvironmental reconstruction of Carboniferous-Lower Permian carbonate interval in the offshore Pechora oil and gas basin was based on well and seismic data. Well data included stratigraphic and lithological information from core, cuts and logs. Additional macro- and microscopic study focused on sedimentological aspect has been carried out. Characteristic lithological features of different facies including carbonate build-ups have been recognized and facies analysis was performed. As a result of a comprehensive interpretation of all available well and seismic data, including previous works and publications, facies zones of Middle Carboniferous - Lower Permian carbonate rocks were defined. They comprise zones of deep shelf, open shallow shelf, depressions on the shallow shelf, tidal plain and shoals on the shallow shelf was identified. Basing on seismic data "reef"-type anomalies were recognized and their origin was interpreted. As a whole carbonate build-ups were subdivided into 4 morphological types, and their areal distribution provides prediction of most perspective zones. This article was prepared for publication as part of the exploration and research work process in Rosneft Oil Company within Pechora sea area.
Abstract The cruise industry is seeking new markets and products to trigger a growing customer base around the world. As the more traditional cruise ships have become bigger and more geared towards mass tourism in typical locations like the Mediterranean and the Caribbean, there has also emerged a need for smaller niche type of cruises, typically higher end and more exclusive. Exploration of the Arctic and Antarctic is exotic and is seen as the next step after the popular cruises to places like Alaska has become mainstream. To enable the cruise industry to conquer Polar region a new generation of cruise ships is entering the market. A common feature for all of these is that they are smaller ships with more luxurious accommodation. Strong focus on safety, customer comfort along with sustainability and low environmental footprint are also all key drivers in this market. To achieve these objectives some of latest technology in terms of propulsion, power generation and distribution, navigation and digital solutions is critical. As per today more than 25 such expedition cruise ships are on order, most of which have been contracted in 2017. Ensuring the safety, comfort and satisfaction of 100s if not 1000s of passengers and crew in such inhospitable regions is no mean feat. Through the experience and innovation in hip power management and propulsion systems some companies have become the leader in providing these type of solutions to the cruise industry. The past 25 years the leading companies have worked closely with ship owners, operators, designers and shipyards to develop the technical that is now setting the standard in the cruise industry. Historically, naval architects have tackled these issues independently, working within rules developed by individual classification societies. However, the exhaustive harmonization work done in developing the IMO's new Polar Code has delivered a type of equivalence in structural and machinery specifications, as set out in the International Association of Class Societies Unified Requirements for Polar Class (PC) ships, which come into force on 1 January 2017. Podded propulsion systems offer major safety benefits for ice-going vessels and has built a strong track-record across the sector, as demonstrated by the fact that it already satisfies IMO's Polar Code requirements and is available with PC notations suitable for a range of ice conditions. This level of confidence stems from past performance, with more than 60 vessels now in operation or ordered working in icy waters, including Pechora Sea, Kara Sea, Ob Bay, and Yenisei River. In addition to ice-going ships, today, around 100 cruise ships are fitted with podded propulsion, including the world's largest such vessels - Royal Caribbean's Oasis class. In fact, due to better vessel maneuverability, improved passenger and crew safety, greater fuel efficiency and lower total cost of ownership, podded propulsion have largely superseded conventional shaftline propulsion in combination with rudder steering across the cruise market. Given the strength demonstrated by podded propulsion in these distinct markets, it came as little surprise that PC6 classed Podded propulsion was selected for polar discovery yacht Scenic Eclipse-the world's first passenger vessel to be constructed explicitly to Polar Code standards-and for three Endeavor class ships which will be the world's largest expedition yachts with ice class. Before the end of 2017 Lindblad Expeditions Holdings, Inc. signed an agreement with Norwegian shipbuilder and ship designer Ulstein to build a new ice class expedition ship relying on podded propulsion system. According to recent news VARD Holdings Ltd. will build unique state-of-the-art LNG dual fuel electric hybrid icebreaker expedition vessel with the second highest icebreaking class Polar Class 2. When delivered, this ship equipped with pod propulsion will be revolutionary in its class. Taking all this into account, it is fair to consider the modern propulsion technology as the natural starting point for new generation cruise ships crossing polar and sub polar waters.
The PDF file of this paper is in Russian. This article provides answers to a number of issues related to the prospect of a new type of vehicle, which is used a screw auger (screw-propelled vehicle). As the main purpose of the function is seen movement on the ice of the Arctic territories. The article assesses the potential market size of the vehicles. As potential target segments at the same time considered the company serves ice-resistant platform in the Arctic shelf. The functional purpose of the vehicles considered in three ways: rescue vehicles for drilling platforms in the Arctic shelf, the Okhotsk Sea and the Caspian Sea (the northern territories have similar to the Arctic ice conditions in winter); vehicles used to remove oil spills in ice conditions; research - research facilities in the Arctic. To estimate the potential market capacity of vehicles used an approach based on the method of chain indicator. Sources of information include: the investment projects of companies engaged in the development and exploitation of the Arctic offshore, infrastructure projects of laying oil and gas pipelines in remote areas with wetlands; the development strategy of the Arctic territories of the subjects of the Russian Federation, given the authorities' statistics, data consulting agencies, reports the Arctic marine geological expedition. Investment projects analyzed in this study are distributed by geographic area: Russian part of the Arctic shelf of the Barents Sea (excluding the Pechora Sea); Pechora Sea (coastal sea in the south-eastern part of the Barents Sea between the islands of Vaigach and Kolguev); Karf Sea; Laptev Sea and East Siberian Sea; Okhotsk Sea; the northern part of the Caspian Sea (this area during the winter characterized by the formation of ice and the broken ice).
Abstract This article studies the problems of ensuring the ecological safety during the development of oil and gas deposits of Russia's Arctic shelf in modern conditions. The determination of precise land geographical boundaries of the Arctic zone of the Russian Federation (AZRF) (About, 2014) is very important. It can permit to implement special regulations of safe economic activity in Arctic. That will promote wide using of special technologies and equipment protecting environment. The creation of network of scientific stations and response centers which support monitoring and researches of environment conditions is of great importance. Today the leading oil and gas companies invest a lot of money in ensuring the ecological safety of their projects. The authors present the costs of environmental protection investments of main natural resources users during the realization of the projects on the shelf of the Russian Federation. Ecological safety becomes one of the most significant criteria during the Arctic projects development. Introduction The first oil of Russia's Arctic shelf from the platform "Prirazlomnaya" in the Pechora Sea was shipped 18 April 2014. President Putin's approval of this project is the start of large-scale work of Russia in Arctic to extract natural resources. Accomplishment of this and similar projects has important impact on the Russian engineering industry and shipbuilding development (Infotek, 2014). In several years oil and gas companies with an arsenal of 100 licenses to research and develop offshore areas plan to pass on to large scale geological prospecting works and to start exploitation of new fields on Arctic shelf (Pavlenko, Kutsenko and Glukhareva, 2014). It is supposed that up to 290 boring wells will be drilled by 2021 according to the program of the Ministry of Natural Resources and Environment (Valentinov, 2014). It will demand the creation of new technologies of development of deep-water shelf which can minimize risk of possible ecological catastrophes. Moreover until the present time there are no sufficient researches on ecological effects of possible oil spills and other technogenic disasters on fragile and vulnerable Arctic environment (Konoplyanik, 2014). The leading oil and gas companies invest more facilities in environment protection than the whole country. Faced with the impending "hydrocarbon fever" ecological safety should be the main criteria for evaluating the Arctic projects.
Abstract Development of remote Arctic regions requires elaboration of perspective plans and assessment of their investment attractiveness. Therefore, rough estimations of oil and gas field development plan are performed in advance of detail design. The term "conceptual design" is used in practice and means principal scheme of field development and appropriate facilities. Conceptual design is applied as an instrument of investment attractiveness assessment and justification of field investigation. Targets and objectives of conceptual design are considered in the paper. The appropriate tools are discussed for analyses in consensus with initial data uncertainty. The article considers different examples of conceptual design application for offshore fields on various stages of exploration and investments assessment. With the aid of case study of Russian Arctic offshore field the main steps of conceptual design are presented including analyses of initial data, application of simplified instruments of forecast and predictions, coordination of geological information with drilling schedules, development planning, facilities and structures selection, cost estimates and sensitivity analyses.
Tanygin, I. A. ("Gazpromneft – Sakhalin") | Sherstobitov, A. V. ("Gazpromneft – Sakhalin") | Barylnik, S. A. ("Gazpromneft – Sakhalin") | Abramochkin, S. A. (Schlumberger) | Davidovskiy, A. O. (Schlumberger) | Belov, M. V. (Schlumberger) | Zhandin, A. O. (Schlumberger)
Abstract This paper presents the first experience of using a system for transmitting downhole data to surface (a telemetry system) based on wireless acoustic signal transmission during drill-stem testing (DST) in four carbonate reservoirs penetrated by an exploration well on Dolginskoye field in the Pechora Sea. Because no fluid would be recovered at surface during well testing, the job sequence program was optimized so that a full set of geological data could be obtained for each carbonate reservoirs in one trip. The purpose of a wireless acoustic telemetry system is to provide a communication link between downhole and surface equipment by means of acoustic signals passing through the well testing bottom-hole assembly (BHA) and enabling a two-way communication channel to be established so that bottomhole data can be received on surface in real time, and downhole equipment can be monitored and controlled. The system allows operators to adjust the well testing program based on bottomhole pressure data and to check whether sufficient amount of data has been collected for the well testing objectives to be achieved. Using a wireless acoustic telemetry system during dynamic well testing has many advantages compared to conventional testing with no downhole telemetry: bottomhole data can be received during job execution, operators have opportunity to monitor and analyze testing data and rely on a full set of representative data received in real time to make decisions for optimizing the job sequence program. The paper emphasizes the significance of receiving average formation pressure data during DST operations as it clarifies geological framework of the intervals under investigation and makes it possible to compare them with pressure data obtained by wireline tools when testing reservoirs with low porosity and permeability. The paper demonstrates a testing procedure optimization process which resulted in saving time on one well up to 36 hours and on other two wells – up to 24 and 48 hours, respectively, where acid treatments were considered unnecessary. For the first time, dynamic well testing were completed on the Russian Arctic shelf in four carbonate reservoirs without any fluid recovery on surface, under an optimized testing program. Considering a short navigation season, this technology is ideal for real-time bottomhole data transmission applications.