This seminar will teach participants how to identify, evaluate, and quantify risk and uncertainty in everyday oil and gas economic situations. It reviews the development of pragmatic tools, methods, and understandings for professionals that are applicable to companies of all sizes. The seminar also briefly reviews statistics, the relationship between risk and return, and hedging and future markets. Strategic thinking and planning are key elements in an organisation’s journey to maximise value to shareholders, customers, and employees. Through this workshop, attendees will go through the different processes involved in strategic planning including the elements of organisational SWOT, business scenario and options development, elaboration of strategic options and communication to stakeholders.
Decisions in E&P ventures are affected by Bias, Blindness, and Illusions (BBI) which permeate our analyses, interpretations and decisions. This one-day course examines the influence of these cognitive pitfalls and presents techniques that can be used to mitigate their impact. Bias refers to errors in thinking whereby interpretations and judgments are drawn in an illogical fashion. Blindness is the condition where we fail to see an unexpected event in plain sight. Illusions refer to misleading beliefs based on a false impression of reality.
Buchinskiy, Stanislav (LLC Tyumen petroleum research center) | Kovalenko, Alexander (LLC Tyumen petroleum research center) | Permyakov, Alexander (LLC Tyumen petroleum research center) | Khakimov, Artur (LLC Tyumen petroleum research center) | Savchuk, Danil (LLC Kynsko-Chaselskoe Neftegaz)
The article is devoted to creation problems of the strategy for involving of fields group in development, taking account of geological, logistic, organization factors, and aspects of forming the unite field facilities construction. In the present work the importance of conceptual approaches while planning of involvement in development of quite small fields group that are relatively near to each other is described.
Melikov, Ruslan (LLC Tyumen Petroleum Research Center) | Pavlov, Valeriy (LLC Tyumen Petroleum Research Center) | Subbotin, Mikhail (LLC Tyumen Petroleum Research Center) | Ptashnyi, Aleksandr (LLC Tyumen Petroleum Research Center) | Pavlyukov, Nikolay (LLC Tyumen Petroleum Research Center) | Krasnikov, Artem (LLC Tyumen Petroleum Research Center) | Korolev, Alexandr (LLC Kynsko-Chaselskoe Neftegaz) | Loznyuk, Oleg (PJSC, NK Rosneft)
Work objective and subject: The main work objective is optimization of field development and well operations by providing recommendations on selection of optimal intervals for horizontal well placement and safe drawdown pressure limits in PK1 gas reservoir for minimizing risks of sand production. Up to 25% of the gas from the total recoverable reserves of gas assess of PJSC "NK "Ronseft" in the territory of Russian Federation is concentrated in PK1 formation, which makes it attractive for commercial field development. The uniqueness of the object is determined by the type of reservoir: highly porous and highly permeable weakly consolidated sandstone, which imposes a number of limitations on completion design and operating parameters. Used methods, technologies, process description: A significant volume of special studies has been carried out to enhance quality and credibility of geomechanical modeling results: broadband acoustic cross-dipole logging, formation micro-imagers, extended leak off tests, pressure tests and fluid sampling, coring for complex petrophysical and geomechanical lab experiments. Based on the obtained information 1D geomechanical models were calculated for several offset and reference wells and calibrated on drilling results of first horizontal wells in PK1 reservoir of the Kharampur field. According to the results of 1D geomechanical modeling, calculations of safe and critical drawdown pressure are made for sand potential prediction during production. Specialized core samples tests are planned and conducted (thick-wall core cylinder tests) to calibrate modeling results. Results and conclusions: Based on geomechanical model and the results of thick-wall core cylinder test, the values of safe and critical drawdown pressure along the wellbore were determined for initial reservoir conditions. It's defined that the planned interval of horizontal well placement in some parts of the study area is characterized by lower value of safe drawdown pressure (DD 2.5 atm.) than was planned in the preliminary field develompent strategy.
Kiselyov, Anton (LLC, Tyumen Petroleum Research Center) | Oshnyakov, Igor (LLC, Tyumen Petroleum Research Center) | Melikov, Ruslan (LLC, Tyumen Petroleum Research Center) | Samoilov, Mikhail (LLC, RN - Peer Review and Technical Development Center) | Korolev, Alexander (LLC, Kynsko-Chaselskoe neftegaz) | Loznyuk, Oleg (Rosneft Oil Company)
The article is devoted to the consideration of the prospects evaluation for commercial production of Turonian gas sediments. There are features of geological reserves estimate, field development issues, status of the pilot project the prospects of involving the reserves of the Turonian deposits in fullscale development at the Kharampur field reviewed. Keywords: Turonian sediments, Kharampur field, low-permeability reservoir, hydraulic fracturing, results of pilot operations, problems and prospects of development The productive Turonian deposits as part of the Kuznetsovskaya suite have regional development and cover the Eastern part of Western Siberia (Figure 1), but until recently, they did not represent a wide industrial interest. Today, most of the gas produced in Western Siberia is in Cenomanian deposits that are in the stage of declining production. The productivity of the deposits above Cenomanian reservoir is observed in many fields where Cenomanian formations are productive.
Digital technologies have a huge impact on our everyday life, including manufacturing industry, becoming a foundation for operations of large enterprises and corporations. Digital age offers unlimited opportunities while specifying rigorous requirements. Being essential for national economy oil and gas industry is not an exception: easy-to-reach oil is running low, hydrocarbon production is getting more accurate and science-based at all stages. It is necessary to search for different creative ways by using latest technologies to take the lead. Industry leaders create entire structures which provide analytical and scientific support of oil production and oil processing at all levels of manufacturing.
Savchuk, D. V. (TNNC LLC, RF, Tyumen) | Davletshin, A. I. (TNNC LLC, RF, Tyumen) | Loznyuk, O. A. (Rosneft Oil Company PJSC, RF, Moscow) | Shaybakov, R. A. (Rosneft Oil Company PJSC, RF, Moscow) | Blekher, A. G. (Kynsko-Chaselskoye Neftegaz LLC, RF, Gubkinsky) | Korolev, A. Yu. (Kynsko-Chaselskoye Neftegaz LLC, RF, Gubkinsky)
The pdf file of this paper is in Russian.
For today, most of major producing fields of Western Siberia are in the production decline phase. Reclamation of Turonian hard-to-recover gas reserves is becoming more relevant, currently it is not in commercial production. The article is dedicated to justification of Turonian reservoir properties on Kharampurskoye field based on the well preproduction results (production, geophysics and well test data). Turonian productive deposits are usually characterized by macro and micro heterogeneity, discontinuity of the net pay thickness and shale interlayers due to complicated lithology composition. Turonian reservoir is mainly represented by the clay fraction and fine-grained siltstone. The conditions of bedding and litho-facies characteristics explain the flow issues when bringing the reservoir into development, which makes it difficult to determine true reservoir properties. The ultimate physical and optimal values of reservoir properties were proved based on the studying results. The performed work results allowed to estimate production potential and risks of projecting the reservoir development, and also to specify the accepted petrophysical relations, correct the action plan for well testing, it demonstrated the feasibility of an extensive set of geophysics methods and the need for alternative methods for their interpretation.
В настоящее время большинство крупных разрабатываемых газовых месторождений Западной Сибири вошло в стадию падающей добычи. В таких условиях все большую актуальность приобретает задача освоения газового потенциала трудноизвлекаемых запасов туронских отложений, промышленная эксплуатация которых в настоящее время не ведется. Рассмотрены вопросы обоснования параметров пласта Т Харампурского месторождения по данным длительной отработки скважин, гидродинамических и геофизических исследований, гидродинамического моделирования с целью уточнения продуктивных характеристик залежи. Для туронских продуктивных отложений характерны наличие высокой макро- и микро-неоднородности, невыдержанность эффективных толщин по вертикали и латерали вследствие невыдержанности глинистых прослоев по толщине и литологическому составу. Коллектор туронской залежи в основном представлен глинистой фракцией и мелкозернистым алевролитом. Условия залегания пласта и литолого-фациальная характеристика залежи объясняют фильтрационные осложнения при вовлечении пласта в разработку и затрудняют определение его фильтрационно-емкостных свойств. Обоснованы предельные физичные и оптимальные, с точки зрения наилучшей сходимости результатов комплекса методов, фильтрационно-емкостные параметры пласта. Оценены потенциал добычи и риски при проектировании разработки залежи, уточнены принятые петрофизические зависимости. Скорректирован план мероприятий при проведении гидродинамических исследований скважин. Показаны целесообразность выполнение расширенного комплекса геофизических исследований скважин и необходимость применения альтернативных методик интерпретации данных. Результаты анализа целесообразно использовать при настройке петрофизических алгоритмов, лежащих в основе обоснования емкостных и фильтрационных параметров модели.
Malanya, G. (Schlumberger) | Butula, K. (Schlumberger) | Burdin, K. (Schlumberger) | Khaziev, M. (Schlumberger) | Kuzmin, S. (Schlumberger) | Kaeshkov, I. (Gazpromneft-NTC) | Kremenetskiy, M. (Gazpromneft-NTC)
This paper describes an alternative method and successful experience of performed Distributed Temperature Sensing (DTS) survey in non-cemented horizontal wells completed with multistage hydraulic fractures (HW-MSF). An optical fiber located inside coiled tubing (CT) has been used as a temperature sensor that continuously recorded temperature changes along the wellbore to identify fracture positions in the horizontal injection part of the well. More than ten DTS surveys in three HW-MSF were run before, during and after refracturing (re-frac) treatments in which special chemicals were used to divert new hydraulic fractures from the existing propped fractures. The DTS survey included the acquisition of temperature at three different stages: during a shut-in period recording a baseline, during an injection test to record the injection profile and during warm-back period to allocate zones (fractures) of flow behind the installed liner.
This paper describes the specifics of oil production and the recommendations developed for the operation of horizontal wells (hereinafter Hz wells) in unconsolidated reservoirs with highly viscous oil with the purpose to increase the efficiency of reserves recovery, based on the interpretation of pilot project results.
Permafrost in Arctic is one of the most important factors when exploration and production of gas and gas condensate fields due to its sensitivity to any technogenic (humane-made) impact or climatic change. Exploration and production procedures in the areas with instable permafrost cause such processes like thermokarst, thermoerosion, flooding, frost heave, surface subsidence, shallow gas blowouts et al. These processes require their forecast and prevention when gas field development designing. However permafrost sometimes is very different in its properties even within area of one production well cluster, so careful study of permafrost behavior is needed before and during gas production. Russian experience of gas field development at complicated permafrost (geocryologic) conditions of Yamal peninsula (Kara Sea shore) is presented.