The article shows results of experimental studies on the applying thermal marks methodfor solving practical problems in horizontal wells. The studies were carried out at the hydrodynamic test complex of Bashkir state University. The results of research showed the potential of using the method. The error rate of the experimental results did not exceed 5 %. According to the results, the further direction of research has been determined.

Oil rims refer to hard-to-recover oil reserves, but at the same time these objects are perspective for development. There are a lot of factors which make traditional methods of development difficult to use. In this regard, there is a need to consider new solutions which will allow to involve hard-to-recover reserves oil rims reserves in development. This article contains the experience of oil rims field development planning in the Gazpromneft Scientific and Technical Center. Key features of field geology and field development plans are considered in the article. Main issues and solution are also revealed. All studied fields (Zapolyarnoye, Vostochno-Messoyakhskoye, Chayandinskoye, Novoportovskoye, Han-Yakhinskoye, Pestsovoye, Urengoskoye fields) are characterized by a complex geology, secondary transformations of reservoir and arrangement in regions with poorly developed infrastructure. Approaches of searching high-quality reservoir zones is applied within fields study. Methods of field development parameters optimization are considered in the article as well as experience of drilling of branched-hole horizontal wells. Recommendations for similar oil rims reservoir development are provided by authors.

This paper is devoted to the research of inhibitors of gas hydrate formation by the isothermal method in the laboratory in order to evaluate their effectiveness and select the most effective ones for conducting field tests under the conditions of the Eastern section of the Orenburg oil and gas condensate field (ESOOGCF). Within the research, 12 reagents from different manufacturers were tested. Evaluation of the effectiveness of inhibitors was carried out by the isothermal method under conditions that simulating production. As a result of testing, the most effective inhibitors and their dosages that minimize the temperature of the onset of hydrate formation were determined. Recommendations were given to field tests of inhibitors at the ESOOGCF. According to the results of field testing of reagent №3, it was found that the use of the test reagent as an inhibitor of gas hydrate formation is economically advantageous in the case of equal technical indicators of the base (methanol) and test inhibitors.

The paper illustrates the influence of the quality of downhole samples on the results of studies of the phase behavior of paraffins and asphaltenes in reservoir oil. The results of studies of a conditionally representative sample of reservoir oil and deep samples taken under multiphase flow conditions (with different volumes of free gas, formation water and solid phase of asphaltenes, resins and paraffins in the sampler) were compared. For each sample, a set of PVT studies was carried out according to all required standards – PVT test, flash separation, determination of viscosity and density. Phase behavior of paraffins and asphaltenes was studied by methods of acoustic resonance (registration of the moment of phase transition), high pressure microscopy (determination of the number and geometric dimensions of solid phase particles), gravimetric and filtration methods (determination of the group composition of the solid phase). To prepare samples of oil with free gas in the chambers, a procedure was carried out to release free gas to the current bubble-point pressure. The results of the analysis revealed that the procedure of free gas release has little effect on the PVT-characteristics of reservoir fluid samples. However, it is not possible to study the phase behavior of paraffins and asphaltenes, since the deviation of different parameters reaches 70% (the content of asphaltenes, resins and paraffins; paraffin saturation temperature; asphaltene saturation pressure, etc.). As a result, the sample of fluids with multiphase flow conditions, if it is impossible to use other methods, may be acceptable for a standard PVT-analysis. But, it is not possible to study the phase behavior of paraffins and asphaltenes for such samples, since these studies are highly dependent on the quality of sampling.

The article concerns the technique of selection of optimal drilling pattern on the example of Eastern block of Orenburg oil, gas and condensate field. The main reservoir engineering aspects for a field with a gas cap and reservoir with pores, vugs and fractures are reviewed. The drilling performance of Eastern block of Orenburg oil, gas and condensate field is thoroughly analy zed, the experience of drilling pattern optimization is described on the example of a south-western block with poor reservoir quality. The results of drilling of optimized 800-1000 m horizontal wells are reviewed.

The paper compares various methodological approaches for factor analysis of the success of well interventions. Particular attention is paid to the factor analysis of the drilling results of multi-stage fractured horizontal wells. Improved analysis tools based on the integral method and the use of a regression model are proposed. Correct consideration of all technological factors at the planning stage of well interventions makes it possible to avoid overestimating or underestimating the potential of new drilling. The use of the considered tools for a number of new pads allowed us to systematically correct geological and simulation models, correctly estimate the potential of new wells and make timely decisions regarding the need for engineering operations and future drilling.

Analysis of the efficiency of the implemented development technologies based on the mass application of hydraulic fracturing is of great interest to oil and gas industry specialists. The aim of the article is to summarize the experience of using the large-volume hydraulic fractures on the low-permeability reservoir, the establishment of general patterns of change in technology-indicators, modern trends in development of the implemented development system. The active using of horizontal wells with multistage hydraulic fracturing is the modern trend in the field development technology. Further improvement of the applied technologies will help to increase the efficiency of Priobskoye field development and increase the oil recovery factor.

In the article describes the complications encountered during kill of wells at the fields of the company Gazprom Neft. Presented of the results of the field test trials of shut-off valves of various designs and various principles of action. Presented their disadvantages and advantages identified during the tests conducted in various regions of the Company's presence are presented.

Seeking to optimize the development of integrated well interventions programs for NIS a.d. Novi Sad facilities, trial deployment of Well Interventions Selection digital information system was initiated in 2018. The project is considered innovative due to the development of well interventions selection algorithms and criteria integrated into the Well Interventions Selection digital information system (DIS). The Well Interventions Selection DIS is a web-interface based system where users can work in online mode; this approach enables a higher-quality planning of well intervention activities, since all computations, data exchange and retention of well intervention decisions history are handled within a single system. The trials involved computations to select well intervention activities at 8 first-stage fields of NIS a.d. Novi Sad (Velebit, Jermenovci, Elemir, Kikinda Zapad X, Kasidol, Karadordevo, Turija-Sever and Idjos). NIS a.d. Novi Sad prepared a long list with 53 candidates for infill drilling and 40 candidates for fracking jobs. These computations resulted in preparation of a potential well interventions program, assessment of well interventions efficiency and identification of related risks. Out of the proposed candidates, two infill wells have been drilled and one fracking job completed to this date. The selection algorithm results are found to be acceptable, and the technique has been cleared for further elaboration. Employment of information technologies in the development of well interventions programs helped upgrade the culture of engineering approach, computerize the processes of initial selection of wells subject to intervention, promptly acquire computation results for large-stock fields, improve the quality of selection of wells subject to intervention, and make the process informative thanks to real-time operation.

This article discusses the optimization of processes in the well servicing and workover by covering them with the information system ERA:Repairs to automate the entire cycle during the downhole operations and efficiency analysis of the performed activities. The concept of the information system is based on the principle of cyclic organizational management PDCA (PlanDo-Check-Act), which is implemented through a continuous cycle of analysis of the effectiveness of previous activities in General and taking into account these data in subsequent planning cycles. The quality of planning activities, therefore, and their effectiveness increase with the accumulation of analytical data. In order to work with high-quality data that can be analy zed in the future, the system prohibits the input of key data in any form, i.e. all data are entered into the system through the dictionaries and classifiers loaded into it, this is the main advantage over existing analogues. Work with such systems assume the involvement of performers to perform downhole work, in most cases it is an external contractor. Work in the system does not require a stable Internet and special permissions to access the corporate network, the application for contractors can work offline, the data is automatically uploaded to the server when the connection appear.

The article presents an effective way of using solar energy is an additional measure to improve the efficiency of power supply of oil fields "Gazpromneft Company", formulated the conclusion about the current expediency of large-scale application of solar energy in Russia taking into account its dynamic development in the world.

Innovation in products, markets, and business models fuels business growth, and disruptive strategies radically change the business ecosystem. When managing innovation, firms must decide whether to invest in new products for markets that do not yet exist, with business models that have not yet been tried. Leaders consistently miss significant opportunities when faced with disruption because traditional analysis methods are inadequate when faced with innovation. Working with disruptive strategies is different than predicting the future based on our view of the past. It is important not to just predict the future, but to think about how to create the future with our decisions. In this paper, we will cover different approaches for conducting digital transformation strategy in a scientific organization, and explain why transactions are the best method to address these kinds of challenges.

Typical characteristic of brown-field type asset is resource base depletion driven by longtime production. In order to keep production rate, new assets and non-explored areas should be involved. However, new assets typically are marked by low economic potential, high geological risks, and require comprehensive study and preparation. This paper focuses on systematic approach of creating optimal resource base development strategy, based on probabilistic reserves estimation. This approach allows company to maintain present level of production or even to raise it, while at the same time, obtain the maximum economic effect from involving new assets.

In connection with the high risks of emergencies in the operation of Arctic shelf deposits, an important task is to provide such facilities with effective and environmentally safe technologies for liquidating oil spills on the water surface. In this study, the effectiveness of the reagent - the oil encapsulator, which is a biopolymer and used as an aqueous solution - was evaluated. The physicochemical properties are investigated and the maximum oil capacity of the encapsulator is determined. As a test environment, sea water and oil from the Prirazlomnoye field were used. The effectiveness of cleaning the water surface from an oil film with an encapsulator in laboratory conditions at low temperatures is shown.