Pub Date : 2023-03-13DOI: 10.31660/0445-0108-2023-1-29-44
Yu. E. Katanov, A. K. Yagafarov, A. Aristov
A quantitative measure of well productivity is the productivity factor. Its value is determined by many factors, but especially by filtration-volume parameters of the zone immediately adjacent to the bottomhole.Filtration-capacitive properties of these zones are formed mainly at the stage of penetration and development of productive object. The practice shows that the present set of technological measures, which characterize the completion cycle, largely determines the reduction of filtration characteristics of the reservoir in the near-wellbore area.Often the consequences are so severe that even from highly permeable intervals it is not possible to obtain commercially viable flows of formation fluid.Under conditions of annually growing volumes of drilling and oil and gas production, old technological methods and schemes are no longer satisfying production. Today there is an urgent need to find and develop new, highly effective methods of drilling, production, field development, allowing meeting the needs of the domestic economy in hydrocarbons.The process of well completion plays an important role in this process. Promising in this area should be considered such a set of measures, which allows preventing or eliminating the negative impact of the cycle of well construction on the productive capacity of the reservoir to the greatest extent.In this regard, the right choice of technical or technological solutions is largely conditioned by the availability of information about the degree of their influence on the change in reservoir properties.
{"title":"Peculiarities of the study of pre-gas-hydrate deposits","authors":"Yu. E. Katanov, A. K. Yagafarov, A. Aristov","doi":"10.31660/0445-0108-2023-1-29-44","DOIUrl":"https://doi.org/10.31660/0445-0108-2023-1-29-44","url":null,"abstract":"A quantitative measure of well productivity is the productivity factor. Its value is determined by many factors, but especially by filtration-volume parameters of the zone immediately adjacent to the bottomhole.Filtration-capacitive properties of these zones are formed mainly at the stage of penetration and development of productive object. The practice shows that the present set of technological measures, which characterize the completion cycle, largely determines the reduction of filtration characteristics of the reservoir in the near-wellbore area.Often the consequences are so severe that even from highly permeable intervals it is not possible to obtain commercially viable flows of formation fluid.Under conditions of annually growing volumes of drilling and oil and gas production, old technological methods and schemes are no longer satisfying production. Today there is an urgent need to find and develop new, highly effective methods of drilling, production, field development, allowing meeting the needs of the domestic economy in hydrocarbons.The process of well completion plays an important role in this process. Promising in this area should be considered such a set of measures, which allows preventing or eliminating the negative impact of the cycle of well construction on the productive capacity of the reservoir to the greatest extent.In this regard, the right choice of technical or technological solutions is largely conditioned by the availability of information about the degree of their influence on the change in reservoir properties.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116847712","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 : 2023-03-13DOI: 10.31660/0445-0108-2023-1-108-110
A. Editorial
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{"title":"In memory of V. V. Panikarovskii, the famous Russian scientist (16.12.1947 — 30.12.2022)","authors":"A. Editorial","doi":"10.31660/0445-0108-2023-1-108-110","DOIUrl":"https://doi.org/10.31660/0445-0108-2023-1-108-110","url":null,"abstract":"<jats:p><jats:italic>.</jats:italic></jats:p>","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126910195","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-126-127
A. Editorial
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{"title":"In memory of I. Yu. Bykov, the famous Russian scientist (15.10.1939 — 01.12.2022)","authors":"A. Editorial","doi":"10.31660/0445-0108-2022-6-126-127","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-126-127","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128864667","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-94-109
V. Korolev, A. Ramazanova, O. V. Balmasova, V. I. Yashkova, A. I. Valeev
In this work, magnetite crude oil-based magnetic fluids have been synthesized and studied. Their physicochemical parameters (density, viscosity, magnetic phase particle size) have been determined. IR spectroscopy and thermogravimetric analysis have been performed. The magnetocaloric properties (magnetocaloric effect and heat capacity) of magnetic fluids have been determined by the microcalorimetric method in the temperature range of 278-350 K in the magnetic field changing its value from 0 to 1.0 T. The maximum value of the magnetocaloric effect of a magnetic fluid with a magnetic phase volume concentration of 0.08 is 0.0035 K at 310 K and at the magnetic induction to 1.0 T. The obtained samples of magnetic fluids have low production costs because crude oil is used as the carrier fluid and can be recommended for various applications of the petroleum and gas industry, for example, for well killing.
本文对磁铁矿原油基磁流体进行了合成和研究。测定了它们的理化参数(密度、粘度、磁相粒度)。进行了红外光谱和热重分析。磁致热的属性(磁性液体的磁热效应和热容)由微量热方法在278 - 350 K温度范围内的磁场改变其值从0到1.0 t磁热效应的最大值的磁性流体磁相体积浓度为0.08是0.0035在310 K和K磁感应获得的1.0 t .磁性液体样品因为原油生产成本较低油用作载液，可推荐用于石油和天然气工业的各种应用，例如压井。
{"title":"Oil-based magnetic fluids. Synthesis, properties, and application prospects","authors":"V. Korolev, A. Ramazanova, O. V. Balmasova, V. I. Yashkova, A. I. Valeev","doi":"10.31660/0445-0108-2022-6-94-109","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-94-109","url":null,"abstract":"In this work, magnetite crude oil-based magnetic fluids have been synthesized and studied. Their physicochemical parameters (density, viscosity, magnetic phase particle size) have been determined. IR spectroscopy and thermogravimetric analysis have been performed. The magnetocaloric properties (magnetocaloric effect and heat capacity) of magnetic fluids have been determined by the microcalorimetric method in the temperature range of 278-350 K in the magnetic field changing its value from 0 to 1.0 T. The maximum value of the magnetocaloric effect of a magnetic fluid with a magnetic phase volume concentration of 0.08 is 0.0035 K at 310 K and at the magnetic induction to 1.0 T. The obtained samples of magnetic fluids have low production costs because crude oil is used as the carrier fluid and can be recommended for various applications of the petroleum and gas industry, for example, for well killing.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129921988","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-110-125
M. G. Sheveleva, L. V. Taranova, S. G. Agaev
The article deals with issues related to the mechanism of solidification of oils. The authors present the results of a dielectric investigation of structural-phase transitions in oils from the fields of Tyumen region in the temperature range -110 ÷ +20 °С. The dielectric relaxation of oils has been established, the values of the activation energy and dielectric relaxation time have been calculated. The phase transition determined by dielectric relaxation is interpreted as a transition from the glassy state to the associated state. The glass transition of oils, accompanied by the cessation of internal rotation in hydrocarbon molecules, is a sign of their true (or viscous) solidification. The glass transition temperature and the temperature region of the structural solidification of oils were determined. The glass transition temperature is considered to be the true pour point. The relationships between the physicochemical characteristics of oils and the parameters characterizing their dielectric properties were established, which were studied by the methods of correlation and regression analysis. The obtained regression equations can be used to predict the physico-chemical characteristics of oils in the technological processes of their extraction, field preparation and transportation.
{"title":"A dielectric investigation of structural-phase transitions in oils","authors":"M. G. Sheveleva, L. V. Taranova, S. G. Agaev","doi":"10.31660/0445-0108-2022-6-110-125","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-110-125","url":null,"abstract":"The article deals with issues related to the mechanism of solidification of oils. The authors present the results of a dielectric investigation of structural-phase transitions in oils from the fields of Tyumen region in the temperature range -110 ÷ +20 °С. The dielectric relaxation of oils has been established, the values of the activation energy and dielectric relaxation time have been calculated. The phase transition determined by dielectric relaxation is interpreted as a transition from the glassy state to the associated state. The glass transition of oils, accompanied by the cessation of internal rotation in hydrocarbon molecules, is a sign of their true (or viscous) solidification. The glass transition temperature and the temperature region of the structural solidification of oils were determined. The glass transition temperature is considered to be the true pour point. The relationships between the physicochemical characteristics of oils and the parameters characterizing their dielectric properties were established, which were studied by the methods of correlation and regression analysis. The obtained regression equations can be used to predict the physico-chemical characteristics of oils in the technological processes of their extraction, field preparation and transportation.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132800594","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-130-131
A. Editorial
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{"title":"In memory of S. Yu. Toropov, a friend, colleague, scientist (14.07.1952 —13.12.2022)","authors":"A. Editorial","doi":"10.31660/0445-0108-2022-6-130-131","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-130-131","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133114702","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-128-129
A. Editorial
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{"title":"In memory of G. A. Kulyabin, a researcher, teacher, scientist (12.06.1936 — 13.12.2022)","authors":"A. Editorial","doi":"10.31660/0445-0108-2022-6-128-129","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-128-129","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127904599","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-73-82
A. Lishchuk, S. A. Leontiev, D. O. Stepanov, A. Nagiev
The article presents the results of field trials of an experimental plunger submersible pumping unit on a directional well at the Romashkino oil field. The authors compare the performance parameters (electricity consumption and torque developed by the drive during steady-state operation) of the rodless oil production technology to the use of rod pump units and traditional pumping units.It is dealt with the inclinometric parameters of the wellbore, certain characteristics of energy consumption, as well as data on the torque developed during operation on the drive shaft of an experimental plunger submersible pumping unit obtained during field trials.The authors of the article considered the experimental results obtained and came to the conclusion that the new rodless technology of oil production fundamentally proves its performance under operating conditions in a directional well, and the energy indicators confirm the efficiency and significantly exceed installations based on rod pumps.
{"title":"Investigating the rodless technology of oil and gas fluid production in deviated wells","authors":"A. Lishchuk, S. A. Leontiev, D. O. Stepanov, A. Nagiev","doi":"10.31660/0445-0108-2022-6-73-82","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-73-82","url":null,"abstract":"The article presents the results of field trials of an experimental plunger submersible pumping unit on a directional well at the Romashkino oil field. The authors compare the performance parameters (electricity consumption and torque developed by the drive during steady-state operation) of the rodless oil production technology to the use of rod pump units and traditional pumping units.It is dealt with the inclinometric parameters of the wellbore, certain characteristics of energy consumption, as well as data on the torque developed during operation on the drive shaft of an experimental plunger submersible pumping unit obtained during field trials.The authors of the article considered the experimental results obtained and came to the conclusion that the new rodless technology of oil production fundamentally proves its performance under operating conditions in a directional well, and the energy indicators confirm the efficiency and significantly exceed installations based on rod pumps.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122445519","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-56-72
A. Kislitsyn, S. V. Kuznetsov
The algorithm of estimating the reserves of gas deposits by the material balance method is described. The advantages of this method are the use of rather precise field technological information for calculations and the possibility of regular checks for compliance with the actual nature of field development. However, there are problems of practical application of this method. One of them is the determination of average weighted pressure for the whole gas-saturated volume, especially for low permeable reservoirs with deep depression craters around wells. The process of correct determination of weighted average pressure by means of isobar map and map of effective gassaturated thicknesses of gas reservoirs is proposed and described. Another problem is the long time interval between measurements of reservoir pressure during the field development. We offer the method that allows increasing frequency of isobar mapping by interpolation of reservoir pressure values by calculating this value through the productivity of wells in order to perform operational analysis of the field development. The input data for the calculation are the dynamics of gas flow rate and wellhead pressure dynamics. This approach allows us to estimate formation pressure around each well outside the de-resistivity funnel at any time. The article presents the results of testing the proposed method under field conditions at one of the Yamal fields. The results of the analysis show the difference in the volume of drained reserves with the geological model for a low permeable layer. The difference in the reserves volume estimation by the material balance method using the isobar map was 18 % of the initial geological reserves. The analysis of the reasons of divergence of the drilled reserves was carried out and the fact of differently sorted excavation along the section and the presence of uninvolved reserves was revealed.
{"title":"Estimating drainable gas reserves by the method of material balance","authors":"A. Kislitsyn, S. V. Kuznetsov","doi":"10.31660/0445-0108-2022-6-56-72","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-56-72","url":null,"abstract":"The algorithm of estimating the reserves of gas deposits by the material balance method is described. The advantages of this method are the use of rather precise field technological information for calculations and the possibility of regular checks for compliance with the actual nature of field development. However, there are problems of practical application of this method. One of them is the determination of average weighted pressure for the whole gas-saturated volume, especially for low permeable reservoirs with deep depression craters around wells. The process of correct determination of weighted average pressure by means of isobar map and map of effective gassaturated thicknesses of gas reservoirs is proposed and described. Another problem is the long time interval between measurements of reservoir pressure during the field development. We offer the method that allows increasing frequency of isobar mapping by interpolation of reservoir pressure values by calculating this value through the productivity of wells in order to perform operational analysis of the field development. The input data for the calculation are the dynamics of gas flow rate and wellhead pressure dynamics. This approach allows us to estimate formation pressure around each well outside the de-resistivity funnel at any time. The article presents the results of testing the proposed method under field conditions at one of the Yamal fields. The results of the analysis show the difference in the volume of drained reserves with the geological model for a low permeable layer. The difference in the reserves volume estimation by the material balance method using the isobar map was 18 % of the initial geological reserves. The analysis of the reasons of divergence of the drilled reserves was carried out and the fact of differently sorted excavation along the section and the presence of uninvolved reserves was revealed.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115055814","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 : 2023-01-11DOI: 10.31660/0445-0108-2022-6-83-93
Y. Buryan, V. Sorokin, I. N. Kvasov
The article describes a system for setting and stabilizing the radiation frequency of submersible downhole vibrators. It is assumed that submersible downhole vibrators are used for vibration wave impact on the bottomhole formation zone in wells with a depth of 50 to 300 meters, in which the bottomhole part is structurally designed to be able to convert a comprehensive (pulsating) impact into an oscillating one. In this case downhole vibrators must be subject to additional requirements for the frequency range of the radiation and the accuracy of maintaining the frequency. The speed of rotation and the frequency of the rotary hydraulic vibrator, which is installed in the bottomhole, depends on the fluid flow through the vibrator. In the operation of a submersible vibrator as a hydraulic machine, it must be taken into account that the working fluid from the pump to the vibrator is supplied through a system of oil well tubing, which is a long hydraulic line. The authors of the article compiled a block diagram of the control system, taking into account the transfer functions of the flow controller, a long hydraulic line and the vibrator. The text gives valuable information on the possibility of using flow controllers to ensure setting and stabilization of the radiation frequency of the vibrator.
{"title":"Setting the radiation frequency of a submersible hydraulic borehole vibrator","authors":"Y. Buryan, V. Sorokin, I. N. Kvasov","doi":"10.31660/0445-0108-2022-6-83-93","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-83-93","url":null,"abstract":"The article describes a system for setting and stabilizing the radiation frequency of submersible downhole vibrators. It is assumed that submersible downhole vibrators are used for vibration wave impact on the bottomhole formation zone in wells with a depth of 50 to 300 meters, in which the bottomhole part is structurally designed to be able to convert a comprehensive (pulsating) impact into an oscillating one. In this case downhole vibrators must be subject to additional requirements for the frequency range of the radiation and the accuracy of maintaining the frequency. The speed of rotation and the frequency of the rotary hydraulic vibrator, which is installed in the bottomhole, depends on the fluid flow through the vibrator. In the operation of a submersible vibrator as a hydraulic machine, it must be taken into account that the working fluid from the pump to the vibrator is supplied through a system of oil well tubing, which is a long hydraulic line. The authors of the article compiled a block diagram of the control system, taking into account the transfer functions of the flow controller, a long hydraulic line and the vibrator. The text gives valuable information on the possibility of using flow controllers to ensure setting and stabilization of the radiation frequency of the vibrator.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128114890","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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