Day 3 Thu, October 24, 2019最新文献

{"title":"Involvement in the Development of Undeveloped Areas in Mature Fields","authors":"R. Asmandiyarov, M. Staritsyn, R. Zulkarniev, Roman Studinsky, D. Vorobyov","doi":"10.2118/196854-ms","DOIUrl":"https://doi.org/10.2118/196854-ms","url":null,"abstract":"\u0000 Most of the Russian fields have entered their final stage of development; however, they contain a large amount of remaining recoverable reserves accumulated in unworked areas.\u0000 To involve the unworked areas, a selection method has been developed to select wells for in-fill drilling.\u0000 The method includes the following main stages: Identify the areas with remaining recoverable reserves; select the least depleted areas; place in-fill wells; assess geological and development risks; calculate potential production rates; develop rating and carry out expert assessment.\u0000 The method has been tested on other Brownfields, i.e., - Vyngapurovskoe, Sutorminskoe, Vyngayakhinskoe, Sugmutskoe, Kholmogorskoe, Yety-Purovskoe, Vostochno-Pyakutinskoe and Romanovskoe. Based on the estimated production rates of the wells and geology and development risks, as well as the reserves being involved, a through rating of the wells has been prepared for infill drilling. Expert assessment has identified 265 wells for top priority drilling based on their potential production rates.\u0000 A well with smaller-diameter pay string has been designed to reduce construction costs and make the involvement of unworked areas more efficient.\u0000 Pilot project starts in June 2019 on Vyngapurovskoe BV8/1 target to drill the first three small-diameter in-fill wells from well cluster No. A. Should the pilot be successful, the technology roll-out on first-train wells only will enable us involve over 8.1 million tons of recoverable oil reserves into development.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116679325","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":"Creation of New Multistage Frac Technologies for Implementation in Horizontal Wells in Oil Fields of the Republic of Tatarstan","authors":"B. Ganiev, A. Lutfullin, Ilnur Muhliev, R. Husainov, A. Garifullin, Timur Postnov, A. Postnov","doi":"10.2118/196968-ms","DOIUrl":"https://doi.org/10.2118/196968-ms","url":null,"abstract":"\u0000 Today, significant reserves of PJSC TATNEFT are concentrated in the filled-up terrigenous deposits. A feature of these objects is a high zonal heterogeneity, dissection, degraded filtration-capacitive properties, small thickness (no more than 3-4 meters). Effective development of reserves from these facilities is not possible without the use of high-tech methods of stimulation, primarily drilling of horizontal wells with multi-stage hydraulic fracturing (MSHF).\u0000 The aim of the work was the search and adaptation of new solutions, among which was the MSHF using \"Plug & Perf\" technology. The advantages of this technology is that the whole process is performed exclusively using a logging lot and a hydraulic fracturing fleet, which significantly speeds up the process and allows you to work without additional tripping.\u0000 This technology allowed the maximum acceleration of multiple fracturing and minimum damaging of the bottomhole zone during the formation davelopment. During the development, the planned values of the flow rate of the fluid were achieved, which made it possible to introduce a small-sized installation into the well. For the further development of the direction of multiple hydraulic fracturing in horizontal wells, development objects and technological solutions have been identified. The experience of using this technology will allow the low-permeability and clayey thin reservoirs to be actively involved in active development, at the same time increasing the efficiency and speed of work on the multi-stage hydraulic fracturing.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123307351","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":"Multidisciplinary Engineering Approach and Proper Planning Enables Successful Drilling of One of the Deepest Exploration HPHT Well in the Samgori-Patardzeuli Area, Georgia","authors":"E. Korelskiy, T. T. Yildiz, Jenis Urazaliev, Andrey Goloborodko, Artem Orlov, Suman Tirumanapali, Roman Savinov, M. Akhmetov, R. Ivanov","doi":"10.2118/196806-ms","DOIUrl":"https://doi.org/10.2118/196806-ms","url":null,"abstract":"\u0000 Exploration drilling in the Samgori-Patardzeuli area started in 1974 for the Lower Eocene – Paleocene formations, during the exploration campaign oil discoveries were made in Middle Eocene sediments. The Samgori-Patardzeuli Middle Eocene delivered the bulk of the production in Georgia and is now a depeleted reservoir. Although more than 200 well have been drilled up to date, only 13 wells from them were drilled to the Lower Eocene, therefore Lower Eocene have not been studied sufficiently and gas reserves have not been estimated. Despite this, 29.97 million m3 of gas has been prodused so far from the Lower Eocene sediments.\u0000 This paper describes the successful experience of drilling one of the deepest exploration well PAT-E1 on the Patardzeuli field to evaluate Lower Eocene gas reservoirs.\u0000 Exploration drilling for oil and gas involves numerous risks related with limited information about geological structure and drilling conditions.\u0000 Successful drilling of planned deep exploration well requires good understanding of hole stability to find the optimal mud properties, proper casing seat selection and out-of-the-box engineering solutions to reach well objectives.\u0000 Multidisciplinary team, including drilling engineers, reservoir engineer, geologist, geomechanicist, petrophysicist, drilling engineer, mud engineer worked in collaboration to design and drill one of the deepest exploration well in the area.\u0000 Interval from surface till Upper Eocene was characterized by offset wells, but most of decisions were made based on trial and error. Main problems in the upper sections were related with extreme borehole breakouts and severe losses, while the lower sections was known for losses and gas kick.\u0000 The PAT-E1 well was successfully drilled to the main target in the Lower Eocene and penetrated down to the top of Upper Cretaceous formation with well TD at 5020 m. Elimination one of intermediate sections allows to decrease well construction time and costs with controlled risks of borehole breakouts and losses. Geological support allowed to place casing shoes in a very narrow safe interval to separate the interval of high breakout risk and total loss interval of fractured reservoir with abnormally low pore pressure. Real time pore pressure and fracture pressure prediction service in the lower sections allowed to monitor hole condition in real time and provided timely recommendations for well control.\u0000 The PAT-E1 well is first deep exploration well that was sucsesfully drilled Upper Cretaceous formation on Patardzeuli field which allow to complete advanced formation evaluation and testing. Best practices developed while drilling this well will be applied for future safe drilling in the region.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125365816","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":"Integrated Asset Modelling: Tips, Tricks and Pitfalls","authors":"A. Myasnikov, A. Mikhin, M. Kamartdinov","doi":"10.2118/196875-ms","DOIUrl":"https://doi.org/10.2118/196875-ms","url":null,"abstract":"\u0000 The article demonstrates features of using an Integrated Asset Model (IAM). The description is given for assessing of model reliability with main criteria emphasis. Also acceptable deviations for those criteria are analyzed. The solutions are proposed for problems arising when IAM is used for forecast calculation. A methodical approach is presented that allows to verify production data and to calibrate network elements in fast and effective way. The paper shows IAM updating algorithm which allows to perform calculations with the necessary accuracy.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114896294","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":"Modern Seismic Technologies for Localization of Zones with Improved Reservoir Properties of Palaeozoic Deposits in Western Siberia","authors":"A. Volkova, V. Merkulov","doi":"10.2118/196939-ms","DOIUrl":"https://doi.org/10.2118/196939-ms","url":null,"abstract":"\u0000 The aim of the work was to develop a methodological approach to the localization of promising areas of improved reservoir properties at one of the fields confined to the pre-Jurassic Palaeozoic deposits.\u0000 The paper discusses the integration of seismic attribute analysis and other geological and geophysical materials, the most significant for this object of research of which are reservoir electric microimagers and photo-scanning core, oriented by paleomagnetic methods. In addition to the localization of prospective zones, the fracture density was estimated, and the preferred fracture directions were also identified.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122299000","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":"Perspectives of Unconventional Water Sources Implementation in Hydraulic Fracturing","authors":"D. Vernigora, A. Laptev, A. Borisenko, M. Demkovich, O. Olennikova","doi":"10.2118/196985-ms","DOIUrl":"https://doi.org/10.2118/196985-ms","url":null,"abstract":"\u0000 Currently, Russia experienced a rapid growth in horizontal wells drilling. The most popular method of completion is hydraulic fracturing. About 99% of hydraulic fracturing fluids are prepared using water. This fact undoubtedly increases the importance of technology and practices of collecting and utilizing water from underground and surface sources. The current direction of development of multi-stage hydraulic fracturing is increasing the number of stages and the volume of the proppant. So the main task of fracturing companies in Russia is to optimize the process of collecting and preparing water without increasing the cost of hydraulic fracturing.\u0000 The use of organometallic fluids fracturing is the most common solution for use of unconventional water sources. However, due to the high cost of organometallic liquids, borate fluids will be considered in this work. Existing quality control requirements applied to hydraulic fracturing fluids cannot be directly used to study the rheological properties of fluids based on alternative sources of water — produced water from artesian wells and low temperature water. In connection with the foregoing, in the framework of this work, a new approach to testing and quality control of hydraulic fracturing fluids is presented. In case of using water with low temperature (15 degC in summer, 25 degC in winter), it is crucial to maintain the required recovery rate of fluid viscosity after application of high shear rates when passing through perforations in the near wellbore zone. In the case of the use of artesian water, it will be crucial to maintain the necessary stability of the liquid in a highly mineralized medium.\u0000 During the hydraulic fracturing campaign in 2017-2019, pilot works were carried out using low temperature water and water from artesian wells.\u0000 Implementation of water with a lower temperature leads to a reduction in the time of preparation for hydraulic fracturing by 33-50% reduction in heating time for the fluid. As a result, this practice leads to an increase in the monthly amount of work and the production of hydraulic fracturing fleets. Extended laboratory studies revealed that, developed for low temperature conditions, the hydraulic fracturing fluid not only satisfies the parameters for transferring and holding the proppant in the NWB zone, but even surpasses the liquid prepared by the traditional method (25 degC in summer, 35 degC in winter).\u0000 The main goal of optimization of hydraulic fracturing fluid prepared using artesian water was to reduce the negative impact of some ions, primarily iron ions and hydrocarbonate ions. The presence of these ions in the hydraulic fracturing fluid leads to deterioration of the thermal stability of the hydraulic fracturing fluid. However, following the recommendations developed for the preparation of a fracturing fluid based on artesian water, it is possible to significantly reduce the influence of both one and other ions. The use of artesian water in the a","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122649504","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":"Uncertainty Analysis and Integrated Modeling Application During Field Development","authors":"V. Dmitruk, E. P. Mironov, A. Mulkamanov, A. Kharkovskiy, R. Bayguzov, Maxim Komin, O. Timakova, V. Chernyak, Dmitry Shakhov, M. Krivokorytova","doi":"10.2118/196888-ms","DOIUrl":"https://doi.org/10.2118/196888-ms","url":null,"abstract":"Severneftegazprom OJSC is the operator of the Yuzhno-Russkoye field. In accordance with the field development strategy, in 2018 the commercial development of the Turonian formation began, envisaging the drilling of more than 100 wells to a formation with abnormally high pressure and low permeability and their tie-in to the existing gas gathering network. The task that faces the company is to assess the attainability of the planned targets on the basis of the existing field development concept and surface facilities configuration. A separate focus is on the geological uncertainties analysis of the Turonian formation and their impact on the gas production profile.\u0000 For the uncertainty analysis, a sector hydrodynamic model was built and history matched, which included the first launch clusters with the U-shaped wells and the multistage hydraulically fractured wells (MSHF). The assessment was made for the impact of geological uncertainties, the alternative well locations, as well as the number of hydraulic fracture stages and fracture parameters on the cumulative gas production.\u0000 To study the interference of new wells with the existing network, an integrated model was created, which combined the full-scale Black Oil hydrodynamic models of the Cenoman and Turonian reservoirs with the unified compositional gathering network with more than 250 wells.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114421320","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":"Thick-Walled Cylinder Core Tests with Flushing by Various Fluids: Results and Practical Applications","authors":"R. Nepop, Nikolay Smirnov, R. Molodtsov, Ivan Khomenok, Artur Abalian, Andrea Martin Atanes, A. Maltsev, Gennady Nemirovich","doi":"10.2118/196929-ms","DOIUrl":"https://doi.org/10.2118/196929-ms","url":null,"abstract":"\u0000 This paper presents the results of studying petrophysical and geomechanical properties of rocks by conducting thick-walled cylinder core tests (TWCT) - triaxial compression with flushing by various fluids. Experiments were carried out for a limited number of core samples from the Ourinskoe Field, which is a part of the Western Siberia oil and gas-bearing basin.\u0000 In the framework of the study, various core testing schemes were applied, the results of experiments using different fluids for flushing were analyzed, and the optimal testing parameters (including loading rate, washing time, sample relaxation time, etc.) were selected. The result of the research is a detailed analysis of rock fragments removed by different fluids as a result of triaxial compression and subsequent destruction of a thick-walled cylinder. The paper presents the qualitative relations of the particle size distribution on the prevailing deformation patterns (elastic or plastic), analyzes some petrophysical properties of the strata that control the behavior of the system \"rocks – fluid\", and consider typical scenarios for TWCT experiments.\u0000 The obtained experimental data served as an important source of additional information for assessing the draw-down pressure that controlled sand inflow into the wellbore, to determine its particle size distribution, as well as to calculate the size of the wire-wrapped filter liner completion for sand preventing.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129856534","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":"Geological and Hydrodynamic Data 3D-Visualization Library","authors":"E. Perepelitsa, A. Sayko, E. Babichev","doi":"10.2118/196997-ms","DOIUrl":"https://doi.org/10.2118/196997-ms","url":null,"abstract":"\u0000 As part of this work, a three-dimensional interactive visualization library for rendering geological and hydrodynamic models' objects was implemented. The main functional capabilities of the library are described, and a comparison with commercial and free alternatives is made.\u0000 The library has been successfully integrated into software products for hydraulic fracturing modeling, geological and geomechanical modeling, and is being used by specialists in daily work.\u0000 The performance of our library is comparable to commercial counterparts. This is confirmed by measurements of the screen refresh rate and the amount of RAM usage when displaying models of real reservoirs using our visualizer in comparison with the visualizers of software products of competitors.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114219722","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":"Analysis of Flow Characteristics in Porous Media with Heterogeneity at Microscale and Macroscale","authors":"K. Gerke, A. Isaeva, M. Karsanina, E. Shaporenko, D. Korost","doi":"10.2118/196882-ms","DOIUrl":"https://doi.org/10.2118/196882-ms","url":null,"abstract":"\u0000 Hydrodynamic or oilfield scale models are needed to predict long-term the production process, to design and optimise well placement and evaluate the outcomes of different enhanced recovery practises. These models operate using continuum medium approximations and upscaled effective porous media properties such as permeability, relative permeability and capillary curves and are conventionally based on (multiphase generalization of) Darcy and continuity equations. In this work we explored the difference between flow patterns on the Darcy scale depending on how we parameterized the model – using scalar permeability values, or based on pore-scale simulations on 3D pore geometries of real rock samples. In the latter case two permeabilities were utilized – conventional directional permeability (in three directions) and full permeability tensor. Our results strongly support the idea that full tensors are needed to accurately represent fluxes at Darcy scale then upscaling from core-scale measurements or simulations, or even if using geologic/geostatistical model (with spatial heterogeneous distribution of flow properties). More specifically, our upscaled Darcy scale model parameterized using hypothetical scalar or pore-scale simulated permeabilities revealed: even a simple scalar permeability field, if heterogeneous, produces significant off-diagonal terms in tensorial permeability results; using tensoral permeabilities when upscaling from the core-scale results in significant difference in upscaled (tensorial) permeabilities compared to conventional directional simulation framework.","PeriodicalId":220399,"journal":{"name":"Day 3 Thu, October 24, 2019","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114751049","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}