Day 1 Tue, November 23, 2021最新文献

{"title":"Effective Technology to Fix Horizontal Wells with a Liner for Subsequent Development by the P&P Method","authors":"Dzmitry Paroshyn, Leliauski Siarhei, Pilipchuk Dzianis, Palaheyenka Uladzimir","doi":"10.2118/208540-ms","DOIUrl":"https://doi.org/10.2118/208540-ms","url":null,"abstract":"\u0000 \u0000 \u0000 One of the priority directions of technological development of RUE \"Production Association\" Belorusneft \"is the involvement in the development of unconventional oil reserves and enhanced oil recovery.\u0000 Achievement of this goal was hampered by such a technological challenge in the field of well construction, as providing reliable support for a well with an extended horizontal completion during development by the P&P method.\u0000 The essence of the challenge was that when performing a cluster or multi-stage hydraulic fracturing, increased loads are created on the well support, which can violate its isolation.\u0000 The complexity of the geological and technical conditions in the Pripyat trough lies in the large length of horizontal ends in salinized carbonate reservoirs and high hydraulic fracturing pressures during well development.\u0000 The article discusses solutions for the design and creation of a reliable cement sheath for the given geological and technical conditions.\u0000 To overcome the technological challenge, a cementing technology was developed, including a plugging slurry formulation with elastic properties of a cement stone and a casing rotation technology during the cementing process.\u0000 The plugging slurry formulation was developed with the elastic properties of a cement stone with cement mixing in salt water, adapted to the conditions of the salinized rocks of the Pripyat trough. To develop the formulation, the simulation of the pressure effect during the development by the P&P method on the cement stone behind the casing was used, as well as the simulation of the process of displacement of the drilling mud by the plugging slurry.\u0000 The technology was successfully tested at five sites when horizontal wellbores were fastened with 114 mm tie-back casings, while high cementing quality indicators were achieved. The lengths of the tie-back casings ranged from 509 to 1000 m.\u0000 The article presents the results of assessing the quality of cementing using acoustic cementometry and assessing the density of the medium behind the casing by gamma-gamma cementometry, as well as comparing the quality of cementing with casing rotation and without rotation, before and after the impact of P&P development.\u0000 In RUE \"Production Association\" Belorusneft \"it was decided to use the developed technology in default for attaching 114 mm liners with subsequent development using the P&P method.\u0000","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126942339","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 Geological 3D-Model of Komyshnianske Field Based on the Sequence Stratigraphy Principles","authors":"O. Noskov, Serhii Mykhailovych Levoniuk, M. Myrontsov","doi":"10.2118/208507-ms","DOIUrl":"https://doi.org/10.2118/208507-ms","url":null,"abstract":"\u0000 Currently, the sequence-stratigraphic section dismemberment is only being implemented in Ukraine, so this article is highly relevant.\u0000 The authors created geological 3D model of Komyshnianske gas condensate field based on sequence-stratigraphic section dismemberment for the first time at this area.\u0000 This approach is effective for the following conditions:-insufficient field geological study;-thickness of productive horizons does not reach the seismic resolution boundaries;-no significant difference in impedance values on reflection horizons.\u0000 The selected technique includes the following stages:-field geological study, facies analysis (integration of well geophysical complexes, cores);-deduction and correlation of sequence boundaries;-construction of discrete log, which corresponds to specific sequences distribution;-conducting seismic interpretation of the 3D seismic survey study of research area;-construction of a structural framework with the involvement of correlated sequences boundaries;-comparison of volume seismic attributes with selected sequences distribution.\u0000 A geological 3D model of Komyshnianske gas condensate field was created based on sequence-stratigraphic principles.\u0000 During the research, a geological structure of field was analyzed, the separated conditions of sedimentation (sequences) were deducted and interpreted.\u0000 During the seismic interpretation of 3D seismic survey of study area, local features of wave field were identified, their reflection in the core material was found and linked to the concept of changing sedimentation conditions.\u0000 With a general understanding of the material transportation and accommodation direction, used method allows to qualitatively outline the distribution boundaries of sedimentation certain conditions and predict their development outside the study area.\u0000 Construction of facies discrete log and their distribution in the seismic field allows grouping thin bed layers of collectors to reach the seismic resolution and use them to predict the distribution of facies associated with changes in the rocks reservoir properties (tracking beach facies of deltas/avandeltas, sloping sediments, etc.).\u0000 The constructed model could be used as a trend for reservoir distribution at the stage of construction of static geological model.\u0000 Involvement of sequence-stratigraphy technique is new approach to sedimentation conditions study within Dnipro-Donetsk depression (DDD) areas.\u0000 The paper shows that provided methodology gives:-improved geological understanding of field through sedimentation analysis and facies logging;-trends for reservoir properties distribution with the involvement of construction facies volumes;-proposals for further field E&D.\u0000 The general provisions under conditions of geological materials sufficient base can be applied to other DDD areas, especially in pre-border zones.\u0000 Involvement of sequence-stratigraphy technique is new approach for sedimentation conditions study within Dnipro-Donetsk de","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133758856","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":"NOC Subsurface Organization Transformation to Boost Its Resource Base and Secure Country's Energy Needs","authors":"Sanzhar Zharkeshov, O. Tleukhabyluly, Valentin Loktiev, Askar Atanayev, Agostino Maccagni","doi":"10.2118/208533-ms","DOIUrl":"https://doi.org/10.2118/208533-ms","url":null,"abstract":"\u0000 UkrGasVydobuvannya (UGV) is an E&P organization of the National Oil Company (NOC) of Ukraine – Naftogaz Group. UGV's existing gas fields represent one of the largest reservoir portfolios in the Eastern Europe; however, the current depletion level of the company's fields is also among the highest; the bulk of the fields have depletion levels between 70 and 90%. The E&P Company (UGV) has created a resource base development strategy to plan and deliver exploration activities and reservoir management based on industry best practices to maintain and grow the company's production and bookable reserves for years to come.\u0000 The subsurface transformation program (including both exploration and reservoir management domains) addresses the actions taken to ensure success for the Strategy. Actions consider not only increase in exploration acreage or acquiring new fields and prospects, but also the organizational, cultural, technological and process level changes across the subsurface domain in the company. The program is still in the early implementation phase; however, the first material results are confirming the validity of the program:\u0000 Organization re-design per industry standards: asset development teams were established and aligned with the portfolio priorities; Digital database of subsurface data is being created and systemic reservoir surveillance is being executed; Growth source secured: Black Sea, new onshore unconventional and conventional licenses; Modern exploration practices, including risk-based probabilistic exploration drilling decisions and launching of Petroleum Systems Analysis and Basin modeling; Reshaping the obsolete rigid structure of the research institute into a modern R&D center; and, Professional development program tailored to build-up the modern skills and competencies of company's subsurface teams.\u0000 These and other important steps of the transformation will ultimately help the company to ensure a healthy reserves replacement ratio and increase the production share of greenfields in its portfolio.\u0000 This case study can serve as a blueprint for any medium-sized subsurface organization (especially in NOCs) that faces similar resource base challenges and wishes to improve its production performance.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127522087","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":"Some Aspects of Seismic Data Reverse Time Migration for Salt Tectonics Geology of the Dnieper-Donets Basin","authors":"P. Kuzmenko, Viktor Buhrii, Carlo D'Aguanno, Viktor Maliar, Hrigorii Kashuba, V. Loktiev, Nataliia Rusachenko, Annalisa Epifani, M. Mantovani, L. De Luca","doi":"10.2118/208531-ms","DOIUrl":"https://doi.org/10.2118/208531-ms","url":null,"abstract":"\u0000 Processing of the seismic data acquired in areas of complex geology of the Dnieper-Donets basin, characterized by the salt tectonics, requires special attention to the salt dome interpretation. For this purpose, Kirchhoff Depth Imaging and Reverse Time Migration (RTM) were applied and compared. This is the first such experience in the Dnieper-Donets basin. According to international experience, RTM is the most accurate seismic imaging method for steep and vertical geological (acoustic contrast) boundaries. Application of the RTM on 3D WAZ land data is a great challenge in Dnieper-Donets Basin because of the poor quality of the data with a low signal-to-noise ratio and irregular spatial sampling due to seismic acquisition gaps and missing traces. The RTM algorithm requires data, organized to native positions of seismic shots. For KPSDM we used regularized data after 5D interpolation. This affects the result for near salt reflection. The analysis of KPSDM and RTM results for the two areas revealed the same features. RTM seismic data looked more smoothed, but for steeply dipping reflections, lateral continuity of reflections was much improved. The upper part (1000 m) of the RTM has shadow zones caused by low fold. Other differences between Kirchhoff data and RTM are in the spectral content, as the former is characterized by the full range of seismic frequency spectrum. Conversely, beneath the salt, the RTM has reflections with steep dips which are not observed on the KPSDM. It is possible to identify new prospects using the RTM seismic image. Reverse Time Migration of 3D seismic data has shown geologically consistent results and has the potential to identify undiscovered hydrocarbon traps and to improve salt flank delineation in the complex geology of the Dnieper-Donets Basin's salt domes.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131287953","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 Importance of Seismic Attributes in Complex Area, Case Study from Vodianivske Field, Dnieper-Donets Basin, Ukraine","authors":"I. Khabanets, B. Medvedev, Carlo D'Aguanno, D. Scapin, Marco Mantova","doi":"10.2118/208506-ms","DOIUrl":"https://doi.org/10.2118/208506-ms","url":null,"abstract":"\u0000 The Dnieper-Donets Basin (DDB) is the principal producer of hydrocarbons in Ukraine and reserves are found in lower Permian and in Visean-Serpukhovian from Lower Carboniferous.\u0000 The Vodianivske field is located halfway between Poltava and Kharkiv in east Ukraine with proven reserves at depth of 5-6km. Previous studies based on legacy seismic data show thickness changes of the upper Visean towards the main structure and dim small-scale structures on the block boundary.\u0000 A recent 3D data reprocessing using 5D interpolation and advanced prestack time migration provides a broad frequency content image and imparts detailed high-resolution geological events. While traditional exploration is focused on gas traps in the Visean and below, current study aims to scan for potential traps in the Serpukhovian and above.\u0000 In order to reveal thin section features, multiple seismic attributes were tested, and spectral decomposition was found to be a powerful tool that delineated thin sand bodies in river valleys and allowed interpretation of high-resolution small-scale faults and pinch-outs not seen before.\u0000 Frequency tuning analysis on mapped horizons associated with upper Serpukhovian supported the presence of a large deltaic structure revealing SE-NW thin ∼1km wide sand body and developed set of crossing meanders. Similar approach was applied on legacy data expanding to the east and while seismic quality was limited, it was possible to identify a narrow ∼25km length meander and highlight a fault set.\u0000 Upon seismic attribute study we were able to identify and map thin units associated with sands that can be considered as future targets in hydrocarbon exploration in the area.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133942663","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":"Optimizing Bottom Hole Assembly Design Criteria to Improve Mechanical Performance in Slim Hole Drilling Environment","authors":"Stephen Fleming, Roberto Ucero, Yu.A. Poltavchenko","doi":"10.2118/208541-ms","DOIUrl":"https://doi.org/10.2118/208541-ms","url":null,"abstract":"\u0000 After analyzing the historical data of neighboring wells adjacent to the drilling site, 11 bit trips were required due to the low mechanical performance of the bottom hole assembly elements. This observation is based on maximum circulation hours and low helical bucking values that make it uneconomic to drill the sections with a positive displacement motor drive system. A redesign the bottom hole assembly was proposed to achieve an improved mechanical performance which allowed the section to be drilled with a single assembly.\u0000 With a focus on increasing the mechanical limitations of the downhole elements, the use of 4 ¾\" equipment is considered instead of the 3 ½\" standard equipment used in this hole size. One of the biggest challenges was modifying the 4 ¾\" positive displacement motor (PDM) to fit into the 5 ½\" hole given that the mud motor has a maximum unmodified diameter of 5 ½\".\u0000 Using the force analysis module of a State-of-the-art BHA modelling software suite, multiple iterations were performed to simulate and validate an alternative PDM design and accompanying directional assembly. This new design featured modifications to an existing 4 ¾\" PDM deploying a long gauge bit in combination with a fit for purpose measurement while drilling system.\u0000 After numerous runs using this assembly design, it was found that there was no additional or unexpected wear of the modified Mud Motor components or associated elements of the downhole equipment. These observations act to validate the pre-job engineering force analysis.\u0000 With the improved mechanical specifications of the 4 ¾\" Bottom Hole Assembly (BHA) components, circulating hours were increased from 100 hours to 250+ hours in a stepwise process. This enabled drilling of the entire 5 ½\" section with a single BHA, comparing favorably to the legacy approach with an average of eleven bit runs.\u0000 The modified 4 ¾\" PDM coupled with long gauge bit technology enabled a reduction in the oriented to rotate drilling ratio and an associated increase in the overall rate of penetration (ROP).\u0000 It can be concluded that the substitution of 4 ¾\" drilling equipment for 3 ½\" in the 5 ½\" hole section, increased the drilling efficiency between 30-50% according to field data obtained in Ukraine.\u0000 The modified 4 ¾\" PDM combined with long gauge bit technology has the potential to improve 5 ½\" hole drilling performance in other locations. Following a structured planning process using State-of-the-art BHA modelling software suite enabling the evaluation of the significant forces that act in the drilling assembly and so significantly reducing the risks associated with exceeding the original design limits of the assembly. By improving the mechanical performance of the drilling assembly in a 5 ½\" hole, new territory for drilling engineers and design engineers is now available to increase the drilling performance in slim wellbores.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115914061","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 Implementation of the Largest Geological and Production Corporate Database in Ukraine to Accelerate Digital Transformation","authors":"Vadym Reshetniak, Arsene Akono, R. Sherif, Amine Boumehdi, Sid Ahmed Morsli, Y. Popko, D. Yusupov, Sanzhar Zharkeshov, Valetnyn Valetnyn Loktiev","doi":"10.2118/208530-ms","DOIUrl":"https://doi.org/10.2118/208530-ms","url":null,"abstract":"\u0000 Two years ago, geoscientists of the leading East European gas producers were still using paper logs, unknown data quality sources, and many data versions, stored on individual local disks for their interpretation jobs. To overcome this challenge, the deployment of a geological and production database was initiated in the framework of the digital transformation programme. The key objectives were to build a single data repository for all company assets and integrate it with the production and drilling business systems.\u0000 The development of the corporate data repository started with an extensive data assessment. A report of available data types, business processes, recommended data management, and business rules were produced. Loading and quality control procedures were designed to load over 40 different data types, including geology, geophysics, production, and drilling. Standardisation of data available in non-industry formats was necessary, e.g. for Lithology data. To enable reporting of drilling and production data stored in the business systems, complex integration and synchronisation between different Database Management Systems were developed. Data delivery to petrotechnical applications was a key to productivity.\u0000 By implementing this centralised and unique Corporate Data Storage, digitalization and loading of the well, log, seismic, drilling, and production data with proper quality were enabled. Petrotechnical experts can now use one data access point to retrieve data into their applications quickly and efficiently using just an integrated web browser. Searching information within SEGY or DLIS files was previously a difficult process that has been facilitated through an application user interface displayed in the local language. Thousands of well logs, documents, and reports have been digitised and made available in the system. The interpretation results and knowledge are now captured and reused in future field development planning. All the company data including drilling and production data synched from business systems are now available in a single place and accurate reporting can be facilitated. The system allowed the reduction of the time spent by the users searching and data quality checks.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128501530","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 Negative Impact of Well Cementing on Productive Horizons by Utilization of Swellable Packers","authors":"Mykhaylo Paduchak, V. Dudzych, A. Boiko","doi":"10.2118/208510-ms","DOIUrl":"https://doi.org/10.2118/208510-ms","url":null,"abstract":"\u0000 Avoiding of negative impact of slurry contact with productive sections by utilization of swellable pakers well completion systems as a key solution for depleted reservoirs. Results are compared to previously used classic well completion method with production casing cementing\u0000 The new method of the well completion is based on a long period and many wells operations within Svyrydivske field in Dnipro-Donets Basin (here and after DDB). Precise selection of hybrid, oil and water based elastomers and correct placement in the appropriate hole zones for water and sectional isolation together with oil based mud utilization during drilling have provided stable production in depleted reservoirs and have minimized negative consequences from water filtration. The results achieved and the well completion method are described in detail to allow readers to replicate all results in a comparable geological conditions in DDB.\u0000 Current well completion method has a couple of outstanding results achieved: –well integrity barrier is based on sufficient differential pressure provided by swellable packers;–reliable long term water isolation of all detected water contained intervals;–the production sections are not polluted by slurry filtrated water;–increased production rate comparing to cemented wells;–no risks of slurry loss during well cementing.\u0000 This technology has been successfully implemented in both vertical and deviated wells on 4.5″ (114.3 mm) casing OD, in the interval 5100-5450 meters, bottom hole temperature 120-135°C. The differential pressure provided by swellable packer is up to 10,000 PSI (68.9 MPa). Fluid reactive packers are ready to expand and isolate highly cavernous hole sections and keep differential pressure sustainably. To achieve the best results with this well completion method, it is also important to use reliable gas tight casing connections and know precise reservoir characteristics. That is why the technology is recommended to be customized for well known brownfield reservoirs with high rate of depletion.\u0000 The main benefit of the well completion method is a proved and safe technical solution for mainly depleted deep gas and condensate deposits in DDB (Ukraine) with sensitive economics","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126416759","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":"A Comprehensive Machine Learning Approach for Quantitatively Analyzing Development Performance and Optimization for a Heterogeneous Carbonate Reservoir in Middle East","authors":"Ruijie Huang, Chenji Wei, Baohua Wang, Baozhu Li, Jian Yang, Suwei Wu, L. Xiong, Zhengzhong Li, Yuankeli Lou, Yan Gao, Shuangshuang Liu, V. Sudakov","doi":"10.2118/208529-ms","DOIUrl":"https://doi.org/10.2118/208529-ms","url":null,"abstract":"\u0000 Compared with conventional reservoir, the development efficiency of the carbonate reservoir is lower, because of the strong heterogeneity and complicated reservoir structure. How to accurately and quantitatively analyze development performance is critical to understand challenges faced, and to propose optimization plans to improve recovery. In the study, we develop a workflow to evaluate similarities and difference of well performance based on Machine Learning methods. A comprehensive Machine Learning evaluation approach for well performance is established by utilizing Principal Component Analysis (PCA) in combination with K-Means clustering. The multidimensional dataset used for analysis consists of over 15 years dynamic surveillance data of producers and static geology parameters of formation, such as oil/water/gas production, GOR, water cut (WC), porosity, permeability, thickness, and depth. This approach divides multidimensional data into several clusters by PCA and K-Means, and quantitatively evaluate the well performance based on clustering results. The approach is successfully developed to visualize (dis)similarities among dynamic and static data of heterogeneous carbonate reservoir, the optimal number of clusters of 27-dimension data is 4. This method provides a systematic framework for visually and quantitatively analyzing and evaluating the development performance of production wells. Reservoir engineers can efficiently propose targeted optimization measures based on the analysis results.\u0000 This paper offers a reference case for well performance clustering and quantitative analysis and proposing optimization plans that will help engineers make better decision in similar situation.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126461341","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":"Specifics of Implemented Development System of Shtormove Field Black Sea Offshore","authors":"Mykhailo Mykytovych Bahniuk, Vitaliy Mykolaiovych Vladyka, O. Hotsynets, Oleksandra Olehivna Dmyshko, M. Dorokhov, Vasyl Petrovych Bodlak, Lesia Mykhailivna Kozak","doi":"10.2118/208534-ms","DOIUrl":"https://doi.org/10.2118/208534-ms","url":null,"abstract":"\u0000 The development system of the main hydrocarbon deposit of the Shtormove field was designed taking into account the change in reservoir rock properties in horizontal and vertical sections of the gas-saturated interval. Based on the results of core analyses and interpretation of logging data from exploration and appraisal wells, maximum porosity values were assigned to the top part of the deposit, with lower porosity values assigned closer to the gas-water contact area. The analyzed thin sections demonstrated vertical and subvertical fractures, as well as multiple pores and dissolution vugs. Most of the fractures occur in the top part of the gas-condensate deposit. Natural fractures in the rocks of the productive interval were confirmed by well testing using a steady flow analysis.\u0000 Taking into account the determined reservoir properties’ distribution pattern in the gas-condensate deposit II, the wells were drilled in the top part of the deposit from a fixed offshore platform during the pilot development period. During this period, the estimated recoverable gas reserves’ values matched the values obtained using the volumetric estimation method. In the following years, in order to increase the gas recovery rate, the infilling production wells were drilled in the top part of the deposit. Based on the analysis of the development, it was determined that the addition of new wells had little effect on the performance of existing ones. As a result, attributable to infill drilling in the top part of the deposit, the annual gas production increased. Given the similarity of the geological model and distribution of reservoir properties, the implemented development system of the Shtormove field should be recommended for new development targets.","PeriodicalId":259631,"journal":{"name":"Day 1 Tue, November 23, 2021","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128862463","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}