Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154028
D. Orlov
{"title":"Monitoring of horizontal wells operation, using tracer profiling of the inflow, at the Russian field","authors":"D. Orlov","doi":"10.3997/2214-4609.202154028","DOIUrl":"https://doi.org/10.3997/2214-4609.202154028","url":null,"abstract":"","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133504462","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154025
E. Anokhina, G. Erokhin
Summary The use of new methods for processing seismic data makes it possible to refine the tectonic model of the field, to forecast zones of increased and decreased productivity in the production horizons. This is necessary for a reasonable choice of directions and lengths of horizontal and directional wellbores in the most fractured zones in order to maximize production rates. The fracture zone map serves as the basis for the design of the field development scheme. Initially, it is recommended to lay wells in zones of increased fracturing of the productive horizon, while avoiding or taking into account the zones of possible complications during drilling, which are present in the overlying horizons. If the location of the well pad has already been determined, the resulting map will help to adjust the azimuth and length of the horizontal sections of the wellbores to undercut the zones of increased productivity.
{"title":"Forecast of productivity in the design of the field development scheme with horizontal wells based on the use of new methods of seismic data processing","authors":"E. Anokhina, G. Erokhin","doi":"10.3997/2214-4609.202154025","DOIUrl":"https://doi.org/10.3997/2214-4609.202154025","url":null,"abstract":"Summary The use of new methods for processing seismic data makes it possible to refine the tectonic model of the field, to forecast zones of increased and decreased productivity in the production horizons. This is necessary for a reasonable choice of directions and lengths of horizontal and directional wellbores in the most fractured zones in order to maximize production rates. The fracture zone map serves as the basis for the design of the field development scheme. Initially, it is recommended to lay wells in zones of increased fracturing of the productive horizon, while avoiding or taking into account the zones of possible complications during drilling, which are present in the overlying horizons. If the location of the well pad has already been determined, the resulting map will help to adjust the azimuth and length of the horizontal sections of the wellbores to undercut the zones of increased productivity.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115534478","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154024
M. Shipaeva, D. Nurgaliev, V. Sudakov, S. Usmanov, R. Safina, R. Salimova
Summary Hydraulic fracturing in horizontal wells is one of the effective stimulation techniques. Despite the widespread use of this technology, determining the vertical distribution of fractures and adjusting its parameters in the geological and reservoir simulation models remains challenging. That is due to the lack of borehole and areal geophysical surveys data on fractures distribution. Vertical distribution of hydraulic fractures has a strong influence on fluid flow in carbonate reservoir. The correct simulation of their geometry in the hydrodynamic models greatly affects the nature of reserve recovery, the well performance, water breakthrough and the efficiency of reservoir development as a whole. The paper shows an approach based on geochemical survey of oil produced allowing identification of formation produced by a well with fracture and calibration fracture vertical distribution in reservoir simulation model on the data of oil inflow from each formation.
{"title":"Geochemical Approach for Identification of Hydraulic Fracture Vertical Distribution in Reservoir Simulation Model Basing on Microcomponent Study of Oil Produced","authors":"M. Shipaeva, D. Nurgaliev, V. Sudakov, S. Usmanov, R. Safina, R. Salimova","doi":"10.3997/2214-4609.202154024","DOIUrl":"https://doi.org/10.3997/2214-4609.202154024","url":null,"abstract":"Summary Hydraulic fracturing in horizontal wells is one of the effective stimulation techniques. Despite the widespread use of this technology, determining the vertical distribution of fractures and adjusting its parameters in the geological and reservoir simulation models remains challenging. That is due to the lack of borehole and areal geophysical surveys data on fractures distribution. Vertical distribution of hydraulic fractures has a strong influence on fluid flow in carbonate reservoir. The correct simulation of their geometry in the hydrodynamic models greatly affects the nature of reserve recovery, the well performance, water breakthrough and the efficiency of reservoir development as a whole. The paper shows an approach based on geochemical survey of oil produced allowing identification of formation produced by a well with fracture and calibration fracture vertical distribution in reservoir simulation model on the data of oil inflow from each formation.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114861515","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154058
A. Gayfullin, A. Ivshin, A.G. Kudiiarov, A. V. Churakov, I. Fayzullin
Summary There are no optimal solutions for re-fracturing in horizontal wells in JSC «Gazpromneft-Noyabrsneftegaz» this time because exist certain factors that complicate process repeated hydraulic fracturing. The authors proposed the idea of creating multistage hydraulic fracturing's tailpipe with additional elements on new horizontal wells. This configuration has next additional element: movable elements with a saddle, soluble balls, hydraulic fracturing sleeves, packer. The idea is to close existing sleeves and open new ones without additional impact on the formation and attracting expensive equipment. Advantages of such simple type of tailpipe: 1. There is no need to prepare the well for repeated multi-stage hydraulic fracturing. 2. Minimization of manipulations for drilling ports in a horizontal wellbore prior to hydraulic fracturing. 3. It eliminates the need to run additional two-packer systems to separate each interval during re-fracturing. 4. It solves the issue of targeted repeated hydraulic fracturing in the selected zones. 5. It can be used not only for re-fracturing purposes, but also for isolating water-cut intervals according to the research results. 6. Reducing the cost of the re-fracturing process due to the elimination of the lease of attracting a contractor with two-packer assemblies, lengthy workover well preparation to achieve equal bore diameter in the horizontal part of the well.
{"title":"Multistage hydraulic fracturing's tailpipe with additional elements for the possibility of re-fracturing operations in horizontal wells","authors":"A. Gayfullin, A. Ivshin, A.G. Kudiiarov, A. V. Churakov, I. Fayzullin","doi":"10.3997/2214-4609.202154058","DOIUrl":"https://doi.org/10.3997/2214-4609.202154058","url":null,"abstract":"Summary There are no optimal solutions for re-fracturing in horizontal wells in JSC «Gazpromneft-Noyabrsneftegaz» this time because exist certain factors that complicate process repeated hydraulic fracturing. The authors proposed the idea of creating multistage hydraulic fracturing's tailpipe with additional elements on new horizontal wells. This configuration has next additional element: movable elements with a saddle, soluble balls, hydraulic fracturing sleeves, packer. The idea is to close existing sleeves and open new ones without additional impact on the formation and attracting expensive equipment. Advantages of such simple type of tailpipe: 1. There is no need to prepare the well for repeated multi-stage hydraulic fracturing. 2. Minimization of manipulations for drilling ports in a horizontal wellbore prior to hydraulic fracturing. 3. It eliminates the need to run additional two-packer systems to separate each interval during re-fracturing. 4. It solves the issue of targeted repeated hydraulic fracturing in the selected zones. 5. It can be used not only for re-fracturing purposes, but also for isolating water-cut intervals according to the research results. 6. Reducing the cost of the re-fracturing process due to the elimination of the lease of attracting a contractor with two-packer assemblies, lengthy workover well preparation to achieve equal bore diameter in the horizontal part of the well.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115852715","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154023
E. Sazonov, A. A. Suleimanov, A. I. Ganeev, A. Nugaeva
Summary The report considers the problem of fluid flow to a well with multistage hydraulic fracturing (MSHF) in an infinite and bounded homogeneous isotropic formation. An approximating dependence of the skin factor in a horizontal well with multistage fracturing on its parameters has been obtained. Calculation formulas for expressing the skin factor was derived. Based on the solution of the diffusivity equation for a bounded formation with a boundary condition of the first kind, rates and cumulative production for the well were obtained with good accuracy. An economic estimation of the optimal number of hydraulic fracturing stages was presented. To evaluate this values specialized script is written by means of Python programming language.
{"title":"Estimation of the number of stages of hydraulic fracturing in horizontal wells in various geological conditions","authors":"E. Sazonov, A. A. Suleimanov, A. I. Ganeev, A. Nugaeva","doi":"10.3997/2214-4609.202154023","DOIUrl":"https://doi.org/10.3997/2214-4609.202154023","url":null,"abstract":"Summary The report considers the problem of fluid flow to a well with multistage hydraulic fracturing (MSHF) in an infinite and bounded homogeneous isotropic formation. An approximating dependence of the skin factor in a horizontal well with multistage fracturing on its parameters has been obtained. Calculation formulas for expressing the skin factor was derived. Based on the solution of the diffusivity equation for a bounded formation with a boundary condition of the first kind, rates and cumulative production for the well were obtained with good accuracy. An economic estimation of the optimal number of hydraulic fracturing stages was presented. To evaluate this values specialized script is written by means of Python programming language.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122151119","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154054
V. Vladislav, Dubnitsky Ivan, M. Ilkam, I. Shmarin, Y. Mishin, Kramar Vladimir, Valiakhmetov Artur, M. Medvedev
Summary The developed methodology is based on the reducing of geological uncertainty, the optimal positioning of the horizontal uprising wells in the target interval, an increase of Net to Gross ratio and, therefore, an increase in well productivity. The proposed integrated engineering solutions was successfully implemented in 50 horizontal wells.
{"title":"Drilling and well placement of uprising horizontal wells in multizone reservoirs of Turonian formation in Western Siberia","authors":"V. Vladislav, Dubnitsky Ivan, M. Ilkam, I. Shmarin, Y. Mishin, Kramar Vladimir, Valiakhmetov Artur, M. Medvedev","doi":"10.3997/2214-4609.202154054","DOIUrl":"https://doi.org/10.3997/2214-4609.202154054","url":null,"abstract":"Summary The developed methodology is based on the reducing of geological uncertainty, the optimal positioning of the horizontal uprising wells in the target interval, an increase of Net to Gross ratio and, therefore, an increase in well productivity. The proposed integrated engineering solutions was successfully implemented in 50 horizontal wells.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123764560","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154029
T.A. Murtazin, A.D. Yarullin, V. Sudakov, V. Gataullin
Summary This paper discusses an approach to automate the process of optimal pad arrangement for horizontal wells in bitumen deposits, to reduce the total costs of surface infrastructure. The authors proposed methods for determining the positions of horizontal wellheads, combining them into well pads and design the well profiles. When combining wells into groups, surface and technological limitations are taken into account.
{"title":"An automate approach of optimal pad arrangement for horizontal wells in bitumen deposits","authors":"T.A. Murtazin, A.D. Yarullin, V. Sudakov, V. Gataullin","doi":"10.3997/2214-4609.202154029","DOIUrl":"https://doi.org/10.3997/2214-4609.202154029","url":null,"abstract":"Summary This paper discusses an approach to automate the process of optimal pad arrangement for horizontal wells in bitumen deposits, to reduce the total costs of surface infrastructure. The authors proposed methods for determining the positions of horizontal wellheads, combining them into well pads and design the well profiles. When combining wells into groups, surface and technological limitations are taken into account.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130674052","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154075
D. I. Torba, A. Lisitsyn, A. Gula, A. Bochkarev, A. Glazyrina, Yuriy S. Berezovskiy, D. Metelkin
Summary Achimov deposits development is always a challenging process that frequently requires application of innovative approaches. Horizontal drilling in non-uniform lithology is frequently accompanied by circulation, wellbore stability losses and other complications. Hydraulic fracturing stimulation does not always result in productivity increase, which reduces profitability of development. Due to the incomplete understanding of geological and geomechanical specifics of Achimov deposits, - formations with complex heterogenous structure, low permeability, presence of low-amplitude structural dislocations, - the controlled use of features of formation is hindered and, in turn, makes it necessary to develop an innovative strategy of their surveillance and stimulation. In purpose to optimize an existing development strategy of Achimov deposits in Vingayakhinskoe oilfield, we have developed and applied an approach involving complex cross-segment modelling. 1D and 3D geomechanical models have been built in view of the applied approach. Development of hydraulic fracturing designs, efficiency of which has been evaluated with respect to such reservoir modeling results as predicted production rate and cumulative production, have been the next step, performed for different geological and geomechanical conditions. Thus, the principal feature of applied approach is coupling between geomechanical modeling, complex multivariant hydraulic fracturing modeling and reservoir modeling with the target to maximize production.
{"title":"Complex cross-segment modelling approach applying for productive increase of horizontal wells with multi-stage hydraulic fracturing in Achimov formation conditions","authors":"D. I. Torba, A. Lisitsyn, A. Gula, A. Bochkarev, A. Glazyrina, Yuriy S. Berezovskiy, D. Metelkin","doi":"10.3997/2214-4609.202154075","DOIUrl":"https://doi.org/10.3997/2214-4609.202154075","url":null,"abstract":"Summary Achimov deposits development is always a challenging process that frequently requires application of innovative approaches. Horizontal drilling in non-uniform lithology is frequently accompanied by circulation, wellbore stability losses and other complications. Hydraulic fracturing stimulation does not always result in productivity increase, which reduces profitability of development. Due to the incomplete understanding of geological and geomechanical specifics of Achimov deposits, - formations with complex heterogenous structure, low permeability, presence of low-amplitude structural dislocations, - the controlled use of features of formation is hindered and, in turn, makes it necessary to develop an innovative strategy of their surveillance and stimulation. In purpose to optimize an existing development strategy of Achimov deposits in Vingayakhinskoe oilfield, we have developed and applied an approach involving complex cross-segment modelling. 1D and 3D geomechanical models have been built in view of the applied approach. Development of hydraulic fracturing designs, efficiency of which has been evaluated with respect to such reservoir modeling results as predicted production rate and cumulative production, have been the next step, performed for different geological and geomechanical conditions. Thus, the principal feature of applied approach is coupling between geomechanical modeling, complex multivariant hydraulic fracturing modeling and reservoir modeling with the target to maximize production.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129087046","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154002
A. Seryakov, M. Podberezhny
Summary The results of 3D poroelastic finite element modeling of the fishbone well junction located in the north of the Yamal-Nenets Autonomous District oilfield are presented. The reservoir being studied is characterized by a thin productive pay bounded by a larger gas cap and a water-bearing layer. The oil-bearing rocks are brittle sandstones saturated with viscous oil. The 3D poroelastic modeling of the fishbone located at 1 km depth was carried out for the situations when main wellbore is oriented along maximum and along minimum horizontal stress. The safe wellbore pressure ranges were determined both for drilling and for production regimes of the junction passed through the sandstone with normal and reduced strength.
{"title":"3D modeling of multilateral well (fishbone) junction stability in development conditions of the Yamal-Nenets Autonomous District oil field","authors":"A. Seryakov, M. Podberezhny","doi":"10.3997/2214-4609.202154002","DOIUrl":"https://doi.org/10.3997/2214-4609.202154002","url":null,"abstract":"Summary The results of 3D poroelastic finite element modeling of the fishbone well junction located in the north of the Yamal-Nenets Autonomous District oilfield are presented. The reservoir being studied is characterized by a thin productive pay bounded by a larger gas cap and a water-bearing layer. The oil-bearing rocks are brittle sandstones saturated with viscous oil. The 3D poroelastic modeling of the fishbone located at 1 km depth was carried out for the situations when main wellbore is oriented along maximum and along minimum horizontal stress. The safe wellbore pressure ranges were determined both for drilling and for production regimes of the junction passed through the sandstone with normal and reduced strength.","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126352331","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}
Pub Date : 2021-05-24DOI: 10.3997/2214-4609.202154065
A. A. Kuteev, R. N. Baraev, D. Borisov, E. Voevoda, V. Gribanov, R. Islamgaliev, D. A. Reshetnikov
Summary In general, the experience of the development of continental deposits shows that the approach to drilling should be iterative, i.e. accompanied by continuous analysis of the data obtained and improvement of further drilling technology and strategy as training and experience gain, development and operation of horizontal wells of considerable length and wells of more complex design (MZS, FB).
{"title":"Horizontal wells of considerable length as the only possible solution for the cost-effective involvement of high-viscosity oil reserves in the development of the thin oil rim of the Tazovskoye field PK formation","authors":"A. A. Kuteev, R. N. Baraev, D. Borisov, E. Voevoda, V. Gribanov, R. Islamgaliev, D. A. Reshetnikov","doi":"10.3997/2214-4609.202154065","DOIUrl":"https://doi.org/10.3997/2214-4609.202154065","url":null,"abstract":"Summary In general, the experience of the development of continental deposits shows that the approach to drilling should be iterative, i.e. accompanied by continuous analysis of the data obtained and improvement of further drilling technology and strategy as training and experience gain, development and operation of horizontal wells of considerable length and wells of more complex design (MZS, FB).","PeriodicalId":105144,"journal":{"name":"Horizontal Wells 2021","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124781480","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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