Day 2 Tue, October 16, 2018最新文献

{"title":"Integrated Approach to Real-Time Drilling Optimization Based on Methods of Geosteering, Petrophysics and Geomechanics","authors":"D. Mylnikov, O. Tatur, A. Sabirov, Anton Brazlauskas, Uriy Petrakov, Alexey Sobolev, S. Sigarev, D. Kustarev, K. Yakovlev","doi":"10.2118/191526-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191526-18RPTC-MS","url":null,"abstract":"\u0000 The objective of this work was to drill a horizontal well in the Bazhen formation (Western Siberia, Severo-Demyanskoye field) in order to achieve the maximum possible efficiency both from technological and economical points of view. To solve the task, it was decided to apply a integrated approach to drilling support: synchronously use the methods of geosteering, the results of geomechanical modeling and evaluation of the reservoir properties during the drilling process. The experience of drilling support accumulated by the company at the beginning of the work demonstrated that the coordinated use of the three disciplines leads to an increase in the efficiency of the well construction process.\u0000 Pre-drill geomechanical models of the geological interval of interest were constructed for the target well, and also reservoir properties were evaluated. The wellbore stability analysis is carried out and intervals with high risks of destruction of a breed on walls of a chink are revealed. To minimize risks, recommendations were given on the technological parameters of the well construction: mud weight, casing shoe depth, etc.\u0000 Based on the actually measured rock properties, the petrophysical characteristics of the formation were evaluated. Geosteering methods were used to correct the trajectory in real time for the most efficient well placement in the target interval with the best reservoir properties. Every time the trajectory was changed, the geomechanical model was rebuilt, demonstrating an updated risk map. As a result, the well trajectory was adjusted taking into account minimization of unstable borehole risks.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128930085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Strategic and Tactical Value of Geomechanics for Drilling Operational Excellence of ERD Well in Uzen Field","authors":"K. Chettykbayeva, Y. Petrakov, Alexey Sobolev, O. Tatur, A. Zozulya, V. Kalinin, M. Miletsky","doi":"10.2118/191632-18rptc-ms","DOIUrl":"https://doi.org/10.2118/191632-18rptc-ms","url":null,"abstract":"\u0000 The traditional considerations and guidelines regarding well planning were not applicable to the challenges that extended reach well #101 of the Uzen field have presented. On the one hand, the reservoir itself was shallow, highly heterogeneous and structurally complex. On the other hand, the well trajectory involved the long interval placed nearly parallel to the bedding of catastrophically unstable shales.\u0000 The importance of geomechanical study and mud weight optimization have become very clear after reaching TD of 295.3mm section. There were no signs of instability while drilling, however the pulling out of hole was impossible without rotation, the overpulls, torque and pressure spikes resulted in fracturing the well and circulation loss, the well conditions imposed the high risk of BHA LIH.\u0000 The mud was gradually weighted up from 1.15 sg to 1.40 sg according to geomechanical calculations performed in a short time. After having conditioned the mud and performed several circulation cycles the drilling string was safely extracted out of hole. Due to the highly unstable hole conditions, the decision was to sidetrack the new borehole.\u0000 The main adjustment of the new trajectory of well #101 was dropping as much as possible the inclination angle when drilling through shales, at the same time allowing the maximum distance to water-oil contact. The PDM was planned to be used in the interval with high dogleg while where extended intervals of well trajectory went subparallel to bedding, the RSS was preferred, as there was a high need for lower vibrations and better cleaning quality.\u0000 The morning meetings included the reports and discussion of all the involved parties: Volga Gas management, mud and drilling engineers, geomechanicists, mud loggers and geologists. The thorough inter-disciplinary analysis was performed before making any decision: routine (time and number of reaming after drilling the stand, tripping speeds, circulation timing and duration) and strategic (trajectory change, geostopping, place to perform sidetrack, completion optimization, etc) too. The holistic approach of risks’ assessment and the proactive management resulted in drilling success of the first horizontal well in the field (2480m MD, 717m TVDSS). It was drilled safely and efficiently, allowing to access the reserves, delay the onset of water production, accelerate time to reach planned production level, and increase cumulative production of oil. The success of the drilling performance was publicly acknowledged by Volga Gas.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116882503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Well Intervention Program Creation at the Novoportovskoye Field","authors":"Oleg Olender, A. Malyugin, V. Fedotov, A. Korepanov, R. Asmandiyarov, R. Zulkarniev, Roman Studinsky, E. Sayfutdinov, A. A. Ivanov","doi":"10.2118/191715-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191715-18RPTC-MS","url":null,"abstract":"\u0000 Novoportovskoye Field is classified as large and is characterized by complex geological structure, reservoir development is complicated by bottom water and gas caps.\u0000 The field is developed by horizontal wells with a horizontal section length of up to 2,000 m and various completion methods: Assemblies with extended screen sections isolated by packersAssemblies with sliding ball-activated hydraulic fracturing collarsInternal-flush assemblies with hydraulic fracturing collars (30pcs) activated by a special CT-conveyed device.\u0000 To estimate the efficiency of multi-stage hydraulic fracturing in horizontal wells, a module has been developed that allows estimating the effect of the primary and repeated fracturing. The module takes into account the increase in the number of frac stages, fracture half-length and width, it allows to estimate the risks of clay barriers breakthrough, evaluate reservoir properties, and select the stimulation option.\u0000 To select wells for Hz sidetracking and infill drilling, an algorithm for identifying undeveloped reservoir sections was applied to evaluate the efficiency of well interventions and assess the risks in each zone.\u0000 In the conditions of oil rims, to increase the efficiency of reservoir development using horizontal wells with screen completions, it is recommended to use casing packers in a liner assembly that divide the horizontal borehole into isolated sections. This solution will allow to perform targeted isolation / stimulation of a certain horizontal interval in the process of well operation in case of a decrease in productivity and water/gas breakthrough. As a result, the cost-effective life of a well will be extended and the oil recovery factor of the field will be increased.\u0000 A twin-packer technology for a targeted stimulation of a certain interval in a horizontal wellbore was tested and successfully implemented by Gazpromneft-Yamal.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125795667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Miscible Displacement as an Approach to Increase the Development Efficiency of the Remote Oil Fields","authors":"I. Mukhametzyanov, Maiia Vershinina, N. Glavnov, R. Gareev, A. Popov, A. Penigin, A. Betekhtin","doi":"10.2118/191576-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191576-18RPTC-MS","url":null,"abstract":"\u0000 The development of oil fields is accompanied by the production of associated petroleum gas (APG), that requires it rational use. For the remote deposits, in the conditions of unprofitable transportation of APG, new solutions are needed that make it possible to use the infrastructure of fields for the production, preparation and transportation of both oil and gas. This paper describes an approach to the integrated optimization of the technical and economic efficiency of the development a group of remote oil fields by organizing the miscible injection of APG on one of the fields.\u0000 At the first stage, an object for the potential organization of the reverse gas injection was selected from a group of remote field based on a number of parameters. On the basis of numerical compositional modeling, the mixing ability of gases and oil (slim-tube experiment) was estimated taking into account the variability of the composition of APG from each field and the change in the volumes of gas produced from each of them. Further, for the potential volumes of gas supplies based on the developed algorithm, the optimization of the gas injection strategy and the cycling process was performed.\u0000 Based on the uncertainty analysis, a preliminary assessment of the efficiency of technology implementation has been carried out. The developed program of laboratory studies of miscible processes, aimed at removing the main uncertainties, was implemented, and the analysis of the results allowed us to refine the forecast indicators.\u0000 The main result of the work is to evaluate the alternative (alternative to transporting gas for the purpose of monetization) of using associated gas produced in order to organize a miscible displacement at one of the group of the remote fields. The net present value of the proposed option is estimated at 50% above the base scenario. In the course of the work, an algorithm has been developed for the optimal distribution of gas flows between injection wells in order to increase oil production, given the restrictions on the volume of the cycling process. The application of this algorithm allowed to increase the cummulative oil production by 11% for the field. A program of laboratory studies was developed to remove the main uncertainties in the processes of miscible oil displacement by gas, the implementation of which allowed us to clarify the miscibility pressure ranges and the optimal composition of the gas for injection. All final calculations are performed and confirmed on a tuned compositional simulation model taking into account the sensitivity to the input data. The accuracy of the numerical realization of the experiments is analyzed. The recommendations for improving the evaluation of the miscible processes of both numerical and physical are formulated. In this paper, it is shown that the integrated use of associated gas production can lead to an increase in the attractiveness of the project as a whole, especially for small oil fields remote from ","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121940426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Minimization of Risks in Reservoir Prediction Based on Seismic Data","authors":"M. Vasilyev, A. Butorin","doi":"10.2118/191683-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191683-18RPTC-MS","url":null,"abstract":"\u0000 The article reviews a fast-track high-quality evaluation approach to the net pay reservoir thickness in a well-to-well space. The review is based on rocks the upper-Jurassic (J1-1) Vasyugan suite exemplified by two areas in Western Siberia.\u0000 The presence of certain geological prerequisites for reservoir formation supported by the use of historical data analysis made it possible to cluster the area in question interest according to the level of confidence in the availability of net pay thicknesses.\u0000 The approach described in the article has been instrumental in optimizing the drilling program by mitigating cost risks. New wells delivered corroborating evidence of data reviewed.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115091711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of the Inversion Stress Model for Estimating the Parameters of Fault Tectonics","authors":"A. Sidelnik, S. Lukin","doi":"10.2118/191634-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191634-18RPTC-MS","url":null,"abstract":"\u0000 The purpose of this work is to determine the parameters of fault tectonics by constructing an inversion stresses model with a weak quality of the seismic survey, as well as identification of compression and extension sectors by the structural-geomorphological method (SGM) in subsalt productive sediments.\u0000 The tasks for achieving the goal of the paper: analysis of the quality of available information about fractures within the studied oil deposit, calculation of the inversion stress model, identification of the compression and extension sectors according to the SGM.\u0000 Reconstruction of stress fields in conjunction with geomechanical analysis is a tool for studying the patterns of fracture development in rocks and tectonic evolution of the region.\u0000 Determination of fault parameters and allocation of zones of intensive fracturing allows optimizing trajectories when drilling horizontal and inclined wells, assuming intervals of potential drilling complications, predicting risks during fracturing operations, and qualitatively evaluating the reservoir properties by deformation sectors.\u0000 As inputs to the calculation of the inversion stress model, disjunctive dislocations that are confidently identified by seismic data and records of an electrical microimager appear. Based on information about the spatial location of the actual cracks and faults, the orientation of the tectonic force contributing to the formation of this fault system is calculated.\u0000 The result of the construction of the inversion stress model are maps of displacement and deformation fields. Analysis of these maps in zones with different values of displacements and deformations allows to single out low-amplitude disjunctive dislocations, which are ambiguously determined when interpreting seismic survey. The calculation results are calibrated for microimager data, special core studies, drilling data.\u0000 The initial data for the structural-geomorphological method are topographic maps, space images and digital surface models.\u0000 As a result of applying the structural-geomorphological method, it is possible to reconstruct the orientation of the axes of compression and stretching of neotectonic stresses in the horizontal plane, determine the direction of the shear displacement along the fault (right or left shear), reveal additional stressed conditions in the formation of the fault, and identify the compression and extension sectors.\u0000 Approbation of these methods was carried out at the oil field of the Leno-Tunguska oil and gas province of the Siberian platform.\u0000 Based on the results of the calculation, a small-scale map of fault tectonics was compiled within the studied oil deposit. Further use of this map is planned as a basis for calculating a 3D geomechanical model and selecting a development system. In the process of obtaining new information (data on core research, microimages, drilling data), a map of fault tectonics will be modified.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116744726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Approach to Understanding the Stimulated Reservoir Volume in Unconventional Oil Reservoirs","authors":"Ekaterina Dvoretskaya, M. Salishchev","doi":"10.2118/191492-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191492-18RPTC-MS","url":null,"abstract":"\u0000 At the early stage of unconventional oil field exploitation under circumstances by lack of geomechanical reservoir model the way to estimate drainage volume of fractured horizontal well is considered.\u0000 In order to create connected reservoir volume and to improve reservoir sweep efficiency though the initiating drainage channels in unconventional reservoirs multiple hydraulic fracturing is used. It improves the recovery of oil from previously impermeable vast pore volume. In this case the target of stimulation is not a planar fracture with definite length and height but the supreme rock failure directed to development induced fracturing network and therefore hydraulic techniques distinguishes from standard one. Generally this complex network is achieved by specific hydraulic fluids injection at elevated rates. As a result artificial fractured rock volume is created in the reservoir and provides the draining of a great previously unavailable hydrocarbon reserves which sustaining high production rates and acceptable cummulative oil production per well.\u0000 The concept of stimulated reservoir volume is used for the purpose of characterizing the rock volume subjected to stimulation. In the result of this treatment the complex hydraulically communicated fracture network is generated around the horizontal well. It defined by extensive improved filtration properties due to permeability of induced fractures. Initial stock tank oil in place is governed by rock capacities and saturation of mobile hydrocarbons.\u0000 Effects associated with fractures are the key ones for production intensification since they define the distribution of fluid's flow paths in the reservoir. The possibility of their accounting in the simulation modelling is an important challenge since it directly defines the history matching quality and therefore the forecast of long-term production.\u0000 During the application of the concept of stimulated reservoir (SRV) penetrating with multi-fractured horizontal well the necessity in stimulated reservoir volume characterization is arised. This characterization concerned with the base properties which exert the impact on well productivity index and on the oil recovery factor. Then as a result, the use of mathematical modeling to solve the inverse problem to clarify the structure and properties of unconventional formation by reproducing the history of development authors state three basic geological and technological parameters which define the well production performance of unconventional reservoir with SRV – the volume of stimulated zone, shape-factor and effective permeability of fractured zone.\u0000 At the early stage of exploitation the unconventional reservoir, which characterized by the availability of production history and the drawback of geomechanical data, the approach is presented which provides an opportunity to create the fluid-flow reservoir model ensures with higher degree of accuracy and more reliable long-term production forecast.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132036274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Employees Adaptation Mechanisms in Extractive Industries while Shift Work Organization at Far North and Arctic","authors":"A. Yurjeva, Y. Korneeva","doi":"10.2118/191728-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191728-18RPTC-MS","url":null,"abstract":"\u0000 The study was carried out with the financial support of the grant of the President of the Russian Federation for state support of young Russian scientists - candidates of science (MK-6409.2018.6). The article is devoted to the description of the mechanisms of psychological adaptation of employees of oil and gas producing companies of various professional groups during shift work organization in the Arctic.\u0000 Mining industries are located in remote areas of the Far North and the Arctic, which is why the shift work method is used there. The professional activity of shift work specialists in the conditions of the Far North presents high demands for the creation of conditions for physiological, psychological and socio-psychological adaptation.\u0000 Despite the large number of works in medicine and psychology devoted to these issues of human adaptation to severe climatic and geographic conditions and shift work, the systematization and classification of the mechanisms of psychological, social and psychological adaptation of workers in extractive industries is not enough.\u0000 The research was carried out in oil and gas production with a shift work organization on the territory of the Nenets Autonomous Okrug (the duration of the rotation arrival is 30 days). The study involved 70 workers aged 24 to 60 years (mean age 38.7 ± 1.3). Methods of research: studying documentation, monitoring the work process, questioning, psychophysiological and psychological testing, statistical methods of data analysis.\u0000 As a result of the research, differences in self-regulation, regulatory processes, psychological protections and mechanisms of socio-psychological adaptation among workers in the oil and gas production of various professional groups were revealed.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128556949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sweep Efficiency Increasing of Fractured Oil-Wet Reservoirs: Case Study of Central Khoreyver Uplift Fields","authors":"E. V. Yudin, A. Chorniy, N. Churanova, A. Soloviev, M. M. Khairullin, E. A. Sadreev, A. I. Yushmanov","doi":"10.2118/191579-18rptc-ms","DOIUrl":"https://doi.org/10.2118/191579-18rptc-ms","url":null,"abstract":"\u0000 Reserves decline of oil fields with fractured carbonate reservoir is crucially complicated due to formation vertical heterogeneity, occurrence of separate filtration pathways and as a consequence poor sweep efficiency of reservoir development both in vertical and lateral direction. As a result – there is a failure to achieve expected level of recovery factor.\u0000 To its simplest extent there is no clear understanding of mechanism of reserves recovery, quite how the process of oil displacement happens: either in vertical direction or in a layered way. More uncertainties in the research process are brought by active aquifer, reservoir pressure maintenance system directly below the OWC and nonuniform recovery at vertical scale.\u0000 The results of systematic survey of sweep efficiency increasing of oil-wet fractured carbonates are reviewed on the article using the case study of Central Khoreyver Uplift fields (CKU) of LLC «JC «RUSVIETPETRO» company.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116148801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bazhenovskaya Suite of Severo-Demyanskoe Field: Multi Fracturing Well Completion – Story of Success","authors":"S. Sigarev, Dmitry A. Kustaryov, A. Prokhorov, P. Nikitin, M. Samoylov, Oleg A. Koltypin","doi":"10.2118/191724-18RPTC-MS","DOIUrl":"https://doi.org/10.2118/191724-18RPTC-MS","url":null,"abstract":"\u0000 In recent years, the issue of the Bazhenov development as one of the main hard-to-recover oil reservoirs is getting more and more pressing for the Russian oil industry. Lack of knowledge about this reservoir underpins difficulties that arise both in hydrocarbons production and in well construction and completion. This paper presents a story of success in well construction with a multi-stage frac design in the Bazhenov Suite of the Severo-Demyanskoye Field (OOO RN-Uvatneftegaz). One of the distinctive features of this project is a wide use of the Russian domestic equipment and technologies.\u0000 It is not possible to obtain economic oil rates from the Bazhenov without additional flow stimulation. The selected stimulation method was multi-stage hydraulic fracturing with a considerable proppant mass (large-volume multi-stage fracturing). The average frac job was 80 tons of proppant each; the mixture pumping rate was 5.5 m3/min, thus making it possible to place the defined amount of proppant and create the expected fracture geometry.\u0000 To ensure accident-free drilling and well completion as well as to update the data needed for hydraulic fracturing, advanced preliminary geomechanical studies were carried out.\u0000 In order to maintain operability of the well equipment while waiting on frac jobs (over 8 months), Russian-made heavy potassium formate brine was used as a completion fluid for the first time in Russia.","PeriodicalId":242965,"journal":{"name":"Day 2 Tue, October 16, 2018","volume":"380 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122077657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}