A. Sevostyanov, A. Timirgalin, R. Oshmarin, G. Volkov, I. Mukminov, A. Kondratev
Currently, due to the depletion of terrigenous oilfields there is an increasing tendency in non-conventional hydrocarbon resources like Achimov formations, which characterized by high heterogeneity and low permeability and porosity. Furthermore, AF was transit interval on the most of oil fields, resulting in poor knowledge at core data and well logs. This fact makes it difficult to estimate AF geological properties and predict potential for drilling zones. While researching such a complex object engineers often try to fill in the data from analogous fields that sometimes increases error caused by incorrect analog choice. AF have huge potential in terms of regeneration of the oil and gas resources base, however for its effective development and analysis there is a need in correct systematization and intelligence analysis of available information about this object. This challenge can be solved by creating an expert system, which will allow to process huge amount of scattered information, analyze it with respect to its scale and suggest some kind of information such as perspective in terms of development and analogous zones and fields, technological solutions and their results, based on previous experience
{"title":"Artificial Intelligence Approaches in Achimov Formation Hierarchical Clustering Research Project","authors":"A. Sevostyanov, A. Timirgalin, R. Oshmarin, G. Volkov, I. Mukminov, A. Kondratev","doi":"10.2118/198410-ms","DOIUrl":"https://doi.org/10.2118/198410-ms","url":null,"abstract":"\u0000 Currently, due to the depletion of terrigenous oilfields there is an increasing tendency in non-conventional hydrocarbon resources like Achimov formations, which characterized by high heterogeneity and low permeability and porosity. Furthermore, AF was transit interval on the most of oil fields, resulting in poor knowledge at core data and well logs. This fact makes it difficult to estimate AF geological properties and predict potential for drilling zones. While researching such a complex object engineers often try to fill in the data from analogous fields that sometimes increases error caused by incorrect analog choice.\u0000 AF have huge potential in terms of regeneration of the oil and gas resources base, however for its effective development and analysis there is a need in correct systematization and intelligence analysis of available information about this object.\u0000 This challenge can be solved by creating an expert system, which will allow to process huge amount of scattered information, analyze it with respect to its scale and suggest some kind of information such as perspective in terms of development and analogous zones and fields, technological solutions and their results, based on previous experience","PeriodicalId":406524,"journal":{"name":"Day 3 Fri, October 18, 2019","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134574741","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}
A. A. Isaev, R. Takhautdinov, V. I. Malykhin, A. A. Sharifullin
A significant number of small oilfields on the territory of the Republic of Tatarstan are operated by small oil companies. These fields are mostly characterized by high oil viscosity and low formation pressures. Sheshmaoil Management Company LLC is a leading one among small oil companies of Tatarstan in many respects. The structure of Sheshmaoil Management Company LLC includes 7 small oil-producing companies, three of them (Sheshmaoil JSC, Ideloil JSC, Geotekh JSC) are actively engaged in R&D activities in the field of improving the oil production efficiency from wells through their evacuation. On the oilfields of Sheshmaoil JSC (Severnoye, Letneye, Novo-Sheshminskoye and Krasnooktyabrskoye fields), 19 local structures are under commercial development, the objects of which are oil deposits of carbonate sediments of the Bashkirian and Tournaisian stages, Vereiskian horizon, terrigenous sediments of the Aleksinsky and Tula-Bobrikovskiy horizons of the Early Carboniferous, Kynovskiy and Pashiyskiy horizons of the Late Devonian. 55 oil deposits confined to twelve local uplifts (Svetlogorskoye, Zagonnoye, Dachnoye, Novo-Kadeevskoye, Krasno-Klyuchevskoye, Kuteminskoye, Vostochno-Kuteminskoye, Yasakskoye, Sukhoye, Grivinskoye, Yuzhno-Ulyanovskoye, Serebryanno-Klyuchevskoye) have been identified within the area of the Dachnoye field of Ideloil JSC. Eight of them are confined to the carbonate deposits of the Vereiskian horizon, 8 — to the deposits of the Bashkirian stage, 1 deposit - to the Aleksinsky horizon, 13 deposits are confined to the deposits of the Tournaisian stage of Early Carboniferous. To terrigenous deposits of the following horizons: Tula - 4 deposits, Bobrikovskiy - 16 deposits, Kynovskiy - 5 deposits. 42 deposits of oil are under commercial development.
{"title":"Oil Production Stimulation by Creating a Vacuum in the Annular Space of the Well","authors":"A. A. Isaev, R. Takhautdinov, V. I. Malykhin, A. A. Sharifullin","doi":"10.2118/198401-ms","DOIUrl":"https://doi.org/10.2118/198401-ms","url":null,"abstract":"\u0000 A significant number of small oilfields on the territory of the Republic of Tatarstan are operated by small oil companies. These fields are mostly characterized by high oil viscosity and low formation pressures. Sheshmaoil Management Company LLC is a leading one among small oil companies of Tatarstan in many respects. The structure of Sheshmaoil Management Company LLC includes 7 small oil-producing companies, three of them (Sheshmaoil JSC, Ideloil JSC, Geotekh JSC) are actively engaged in R&D activities in the field of improving the oil production efficiency from wells through their evacuation.\u0000 On the oilfields of Sheshmaoil JSC (Severnoye, Letneye, Novo-Sheshminskoye and Krasnooktyabrskoye fields), 19 local structures are under commercial development, the objects of which are oil deposits of carbonate sediments of the Bashkirian and Tournaisian stages, Vereiskian horizon, terrigenous sediments of the Aleksinsky and Tula-Bobrikovskiy horizons of the Early Carboniferous, Kynovskiy and Pashiyskiy horizons of the Late Devonian.\u0000 55 oil deposits confined to twelve local uplifts (Svetlogorskoye, Zagonnoye, Dachnoye, Novo-Kadeevskoye, Krasno-Klyuchevskoye, Kuteminskoye, Vostochno-Kuteminskoye, Yasakskoye, Sukhoye, Grivinskoye, Yuzhno-Ulyanovskoye, Serebryanno-Klyuchevskoye) have been identified within the area of the Dachnoye field of Ideloil JSC. Eight of them are confined to the carbonate deposits of the Vereiskian horizon, 8 — to the deposits of the Bashkirian stage, 1 deposit - to the Aleksinsky horizon, 13 deposits are confined to the deposits of the Tournaisian stage of Early Carboniferous. To terrigenous deposits of the following horizons: Tula - 4 deposits, Bobrikovskiy - 16 deposits, Kynovskiy - 5 deposits. 42 deposits of oil are under commercial development.","PeriodicalId":406524,"journal":{"name":"Day 3 Fri, October 18, 2019","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121342729","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}
N. Nurlybayev, K. Asanov, A. Bashev, Rauan Rakhymberdi, I. Khlestov, S. Zagranichniy
Hydraulic fracturing has proven to be one of the most efficient and common completion methods to increase well productivity in mature oil fields with tight sandstone formations. However, the efficiency of the overall completion process is influenced not only by the applied fracturing technology but also by the well completion methods and production approach – especially in wells with long perforation intervals. Nowadays, multistage fracturing systems have become widely used for more effective fracture placement and optimization of inflow profiles. This technology is mostly applied in an openhole section of horizontal wells where such completion requirements are most critical. However, the development of existing vertical wells can also benefit from the technology allowing selective stimulation of production zones, which could not be efficiently fractured otherwise. The approach described in the paper covers the candidate selection, recompletion technique, stimulation and production process applied for the oilfield in West Kazakhstan. The sample well had been in production for several preceding years completed with perforations (up to 182 meters) at four main oil-bearing zones. Previously, there was done acidizing treatment which gave two-fold increase in production, but full potential of the well was not achieved. It was identified that the most of the inflow had been coming from only 43% of perforations while the rest intervals did not contribute to production. To achieve the coverage of all productive layers with fractures and involve all layers into production, it was decided to recomplete the well with four-stage completion system with ball activated multishiftable frac sleeves. Four stage completion system was installed in the cased old well and multiple fracturing stimulation was performed successfully. The job is a subject for further testing process of each treated zone, but the effectiveness of applied technology had already been proved as the overall production surplus more than four times. The operator considers replication of similar approach to the other wells in the oilfield.
{"title":"First Successful Application of Multistage Fracturing Completion in Cased Old Vertical Well","authors":"N. Nurlybayev, K. Asanov, A. Bashev, Rauan Rakhymberdi, I. Khlestov, S. Zagranichniy","doi":"10.2118/198405-ms","DOIUrl":"https://doi.org/10.2118/198405-ms","url":null,"abstract":"\u0000 Hydraulic fracturing has proven to be one of the most efficient and common completion methods to increase well productivity in mature oil fields with tight sandstone formations. However, the efficiency of the overall completion process is influenced not only by the applied fracturing technology but also by the well completion methods and production approach – especially in wells with long perforation intervals.\u0000 Nowadays, multistage fracturing systems have become widely used for more effective fracture placement and optimization of inflow profiles. This technology is mostly applied in an openhole section of horizontal wells where such completion requirements are most critical. However, the development of existing vertical wells can also benefit from the technology allowing selective stimulation of production zones, which could not be efficiently fractured otherwise. The approach described in the paper covers the candidate selection, recompletion technique, stimulation and production process applied for the oilfield in West Kazakhstan.\u0000 The sample well had been in production for several preceding years completed with perforations (up to 182 meters) at four main oil-bearing zones. Previously, there was done acidizing treatment which gave two-fold increase in production, but full potential of the well was not achieved. It was identified that the most of the inflow had been coming from only 43% of perforations while the rest intervals did not contribute to production. To achieve the coverage of all productive layers with fractures and involve all layers into production, it was decided to recomplete the well with four-stage completion system with ball activated multishiftable frac sleeves.\u0000 Four stage completion system was installed in the cased old well and multiple fracturing stimulation was performed successfully. The job is a subject for further testing process of each treated zone, but the effectiveness of applied technology had already been proved as the overall production surplus more than four times. The operator considers replication of similar approach to the other wells in the oilfield.","PeriodicalId":406524,"journal":{"name":"Day 3 Fri, October 18, 2019","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124359335","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}
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