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2018/4
Effect of bed thickness on size of specific fragment of reservoir and horizontal wellbore structure
Geosciences

Authors: Zagid S. ALIEV graduated from Azibekov Azerbaijani industrial Institute in 1957. He is Professor of the Department of Gas and Condensate Field Development and Ope- ration of Gubkin Russian State University of Oil and Gas (National Research University). He has been head and the executive director of projects of development of oil and gas fields of Russia, Iran, Iraq, Vietnam, Kazakhstan, Algeria, Germany, etc., and also author of normative documents of OAO Gazprom such as instructions, manuals and standards of enterprises. He is author of 365 publications, including 35 monographs and 30 thematic brochures.
E-mail: rgkm@gubkin.ru
Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and Gas in 1988. She is Candidate of Technical Sciences, associate professor of the Dept. of Gas and Condensate Field Development and Operation of Gubkin Russian State University of Oil and Gas (National Research University). She is expert in the field of development and operation of gas and gas-condensate fields and UGS. She is author of 50 publications. E-mail: kotlyarova_gubkin@mail.ru

Abstract: We studied the effect of bed thickness, as one of the main parameters that determine the size of a specific fragment per one horizontal well. The length of the horizontal borehole affects the coefficients of filtration resistance to a greater extent than the bed thickness, but an unjustified increase in the length of the horizontal section is not economically feasible. The inflow rate of gas decreases at each linear meter of the reservoir with increasing bottomhole pressure along the length of the horizontal wellbore. For real fields, examples are given on the rational choice of the size of a reservoir fragment penetrated by a horizontal well, with respect for the reservoir parameters and the degree of reservoir penetration, leading to an increase in well productivity

Index UDK: 622.276

Keywords: horizontal borehole design; specific drainage area; specific gas reserves, horizontal wells productivity, bed thickness; filtration resistance coefficients; degree of penetration

Bibliography:
1. Aliev Z.S., Sheremet V.V. Opredelenie proizvoditel’nosti gorizontal’nyh skvazhin, vskryvshih gazovye i gazoneftyanye plasty. M.: Nedra, 1995.
2. Aliev Z.S., Rebrikov A.A. Priblizhennyj metod poiska optimal’nyh razmerov fragmenta pryamougol’noj formy i ego vskrytiya dlya obespecheniya maksimal’nogo debita gorizontal’noj skvazhiny. Burenie i neft’, 2007, no. 2.
3. Aliev Z.S., Kotlyarova E.M. Opredelenie proizvoditel’nosti gorizontal’noj skvazhiny, vskryvshej plast s peremennoj tolshchinoj. Trudy VI Mezhdunarodnogo tekhnologicheskogo simpo-ziuma. Institut neftegazovogo biznesa, 2007.
4. Aliev Z.S. i dr. Teoreticheskie i tekhnologicheskie osnovy primeneniya gorizontal’nyh skvazhin dlya osvoeniya gazovyh i gazokondensatnyh mestorozhdenij. M.: Nedra, 2014.
5. Aliev Z.S. i dr. Osobennosti razrabotki nizkoprodyktivnyh gazokondensatnyh mestorozhdenij s bol’shim soderzhaniem kondensata s ispol’zovaniem gorizontal’nyh skvazhin. M.: Nedra, 2016.
6. Aliev Z.S. Vliyanie razlichnyh faktorov na debit gorizontal’nyh skvazhin. NTZH “Tekhnologiya TEHK”, iyun’, 2007.
7. Aliev Z.S. Poisk naychno-obosnovannoi konstrukii gorizontal’noi skvazhiny dlya osvoeniya gazovyh i gazokondensatnyh mestorozhdenij. NTZH “Tekhnologiya TEHK”, aprel’, 2007.

2018/3
Accounting for influence of asymmetry of horizontal wells placement along reservoir to plan number of wellsto be drilled
Geosciences

Authors: Zagid S. ALIEV graduated from Azibekov Azerbaijani industrial Institute in 1957. He is Professor of the Department of Gas and Condensate Field Development and Operation of Gubkin Russian State University of Oil and Gas (National Research University). He has been head and the executive director of projects of development of oil and gas fields of Russia, Iran, Iraq, Vietnam, Kazakhstan, Algeria, Germany, etc., and also author of normative documents of OAO Gazprom such as instructions, manuals and standards of enterprises. He is author of 365 publications, including 35 monographs and 30 thematic brochures.
E-mail: rgkm@gubkin.ru
Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and Gas in 1988. She is Candidate of Technical Sciences, associate professor of the Dept. of Gas and Condensate Field Development and Operation of Gubkin Russian State University of Oil and Gas (National Research University). She is expert in the field of development and operation of gas and gas-condensate fields and UGS. She is author of 50 publications. E-mail: kotlyarova_gubkin@mail.ru

Abstract: We have analyzed the effect of asymmetry of the horizontal wellbore placement along the reservoir. Studies of the location of horizontal wells have shown that the performance of such wells will vary significantly with the thickness of the reservoir, as this is predetermined by increased distance from the horizontal wellbore. The authors carried out the necessary gas-hydrodynamic calculations to use these to design the development of gas and gas condensate fields with different capacitive filtration properties. The results of these calculations are given in the article in tabular and graphical forms, which can be used in practical calculations to determine the number of horizontal wells to be drilled, taking into account the asymmetric placement of such wells in the reservoir thickness

Index UDK: 622.276

Keywords: asymmetry of placement, horizontal well, productivity of horizontal wells, thickness of reservoir, coefficients of filtration resistance, underbalance, symmetric arrangement

Bibliography:
1. Aliev Z.S., Sheremet V.V. Opredelenie proizvoditel’nosti gorizontal’nyh skvazhin, vskryvshih gazovye i gazoneftyanye plasty. M.: Nedra, 1995, 131 p.
2. Aliev Z.S. i dr. Teoreticheskie i tekhnologicheskie osnovy primeneniya gorizontal’nyh skvazhin dlya osvoeniya gazovyh i gazokondensatnyh mestorozhdenij. M.: Nedra, 2014, 231 p.
3. Aliev Z.S. Vliyanie razlichnyh faktorov na debit gorizontal’nyh skvazhin. NTZH Tekhnologiya TEHK, 2007, iyun’.
4. Aliev Z.S., Kotlyarova E.M. Vliyanie razmeshcheniya po ploshchadi, profilya i polnoty vskrytiya gazonosnyh plastov na proizvoditel’nost’ gorizontal’nyh skvazhin. Metodicheskoe posobie. Orenburg, Tipografiya IP SHCHerbakov, 2010, 92 p.
5. Aliev Z.S., Kotlyarova E.M. Opredelenie proizvoditel’nosti gorizontal’noj skvazhiny, vskryvshej plast s peremennoj tolshchinoj. Trudy VI Mezhdunarodnogo tekhnologicheskogo simpo-ziuma. M.: Institut neftegazovogo biznesa, 2007.
6. Aliev Z.S., Rebrikov A.A. Priblizhennyj metod poiska optimal’nyh razmerov fragmenta pryamougol’noj formy i ego vskrytiya dlya obespecheniya maksimal’nogo debita gorizontal’noj skvazhiny. Burenie i neft’, 2007, no. 2.

2017/2
Gasdynamic research on Kushevskoe UGS. E.M. Kotlyarov
Geosciences

Authors: Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and Gas in 1988. She is Candidate of Technical Sciences, associate professor of the Dept. of Gas and Condensate Field Development and Operation of Gubkin Russian State University of Oil and Gas (National Research University). She is expert in the field of development and operation of gas and gas-condensate fields and UGS. She is author of 30 publications, including 1 monograph.
E-mail: kotlyarova_gubkin@mail.ru
Zagid S. ALIEV (born 1935) graduated from Azibekov Azerbaijani industrial Institute in 1957. He is Professor of the Dept. of Gas and Condensate Field Development and Operation of Gubkin Russian State University of Oil and Gas (National Research University). He has been head and the executive director of projects of development of oil and gas fields of Russia, Iran, Iraq, Vietnam, Kazakhstan, Algeria, Germany, etc., and also author of normative do-cuments of OAO Gazprom such as instructions, manuals and standards of enterprises. He is author of 365 publications, including 35 monographs and 30 thematic brochures.
E-mail: rgkm@gubkin.ru

Abstract: The technology of gas dynamic studies of horizontal wells of the Kushchevsky UGS and determining the coefficients of the filtration resistance ag and bg is analyzed. Horizontal wells of the Kuschevsky UGS were studied according to the method of conducting research on vertical wells without taking into account the features for horizontal wells. It is determined that the actual operating time of the well in the test modes is not comparable to the required stabilization time, therefore pressures and flow rates are not stabilized. The use of classical technology for research on stationary filtration modes developed for vertical wells is impractical for horizontal wells. The article presents the existing methods for determining the coefficients of filtration resistance

Index UDK: 551.1/.4

Keywords: gas-hydrodynamic studies, horizontal well, stabilization of bottomhole pressure and flow rate, specific gas reserves, underground gas storage, horizontal well production, cluster location, filtration resistance coefficients

Bibliography:
1. Instruction on a complex research of gas and gas-condensate layers and wells. Under the editorship of G.A. Zotov, Z.S. Aliyev. M.: Nedra, 1980.
2. Gritsenko A.I., Aliyev Z.S., etc. A management on well survey. M.: Nedra, 1995.
3. Aliyev Z.S., etc. Theoretical and technological bases of application of horizontal wells for development of gas and gas-condensate fields. M.: LLC Publishing House Nedra, 2014, 450 p.
4. Aliyev Z.S., etc. Practical inexpediency and impossibility of a research of horizontal gas wells on the stationary modes of a filtration. Gas industry, 2014, no. 1.

2017/1
New technology of increasing efficiency of gas fields development using horizontal wells
Geosciences

Authors: Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and Gas in 1988. She is Candidate of Technical Sciences, associate professor of the Dept. of Gas and Condensate Field Development and Operation of Gubkin Russian State University (National Research University) of Oil and Gas. She is expert in the field of development and operation of gas and gas-condensate fields and UGS. She is author of 30 publications, including 1 monograph.
E-mail: kotlyarova_gubkin@mail.ru
Zagid S. ALIEV (born 1935) graduated from Azibekov Azerbaijani industrial Institute in 1957. He is Professor of the Dept. of Gas and Condensate Field Development and Operation of Gubkin Russian State University (National Research University) of Oil and Gas. He has been head and the executive director of projects of development of oil and gas fields of Russia, Iran, Iraq, Vietnam, Kazakhstan, Algeria, Germany, etc., and also author of normative documents of OAO Gazprom such as instructions, manuals and standards of enterprises. He is author of 365 publications, including 35 monographs and 30 thematic brochures.
E-mail: rgkm@gubkin.ru

Abstract: Performance of horizontal gas wells is reduced in the process of development as the reservoir pressure reduces. The classical method of designing gas and gas-condensate fields using vertical wells only allowed to maintain the initial production rate by increasing the depression on the reservoir, while maintaining continuous annual production rate was only possible by drilling a significant number of new wells. Maintaining the initial production rate is possible by drilling necessary length and diameter of the horizontal section at an early stage, and be periodically lengthening the horizontal section in the process of the development depen- ding on the intensity of the falling reservoir pressure. The proposed technology will allow improvement of the efficiency of the development of deposits of natural gas.

Index UDK: 551

Keywords: production rate, horizontal well, lengthening of horizontal well, maintaining constant production rate, gas influx equation, flow coefficients

Bibliography:
1. Gritsenko A.I., Aliyev Z.S. A management on well survey. M.: Nedra, 1995.
2. Aliyev Z.S., Sheremet V.V. Determination of productivity of the horizontal wells which have opened gas and gas-oil layers. M.: Nedra, 1995.
3. Aliyev Z.S., Arutyunova K.A. Determination of necessary length of a horizontal trunk of a gas well in the course of development. NTZh Gas industry, 2055, no. 12.
4. Aliyev Z.S., Kotlyarova E.M. Tekhnologiya of application of horizontal gas wells. М: Gubkin Russian State University of Oil and Gas, 2015, 156 p.
5. Aliev Z.S., Kotljarova E.M. Vozmozhnost’ priblizhennogo prognozirovanija osnovnyh pokazatelej razrabotki gazovyh i gazokondensatnyh mestorozhdenij s primeneniem gorizontal’nyh skvazhin. Trudy RGU nefti i gaza imeni I.M. Gubkina. M.: Izd. centr RGU nefti i gaza (NIU) imeni I.M. Gubkina, 2015, no. 4, p. 42–51.

2015/4
Using horizontal wells to predict approximate basic indicators of gas and gas condensate fields development
Geosciences

Authors: Zagid S. ALIEV (born 1935) graduated from Azibekov Azerbaijani Industrial Institute in 1957. He is Professor of the Department of Gas and Gas Condensate Field Development and Operation. He has worked as the head and executive of projects of development of oil and gas fields of Russia, Iran, Iraq, Vietnam, Kazakhstan, Algeria, Germany, etc., and also author of normative documents of JSC Gazprom such as instructions, manuals, standards for enterprises. He is author of 365 publications, including 35 monographs and 30 specialzed brochures. E-mail: rgkm@gubkin.ru

Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and Gas in 1988. She is Candidate of Technical Sciences, associate professor of the Department of Gas and Gas Condensate Field Development and Operation. She is expert in the field of development and operation of gas and gas-condensate fields and UGS. She is author of more than 30 publications, including 1 monograph. E-mail: kotlyarova_gubkin@mail.ru

Abstract: The use of horizontal wells for approximate prediction of major indicators of gas and gas condensate fields development is proposed. This is necessary for the design of planned horizontal wells which depend on the nature of flow characteristics changes and can ensure maximum oil recovery and long-term trouble-free operation

Index UDK: УДК 551

Keywords: planned horizontal well, average flow coefficients, approximate prediction of development indicators, profile of pay zone tapping, multilateral horizontal well, construction of horizontal wells

Bibliography:
1. Aliev Z.S., etc. Impractical and impossible to study the horizontal gas wells in the stationary mode filtering. Gas industry, 2014, no. 1.
2. Aliev Z.S., etc. Theoretical and technological basis for the use of horizontal wells for the development of gas and gas condensate fields. M.: Nedra, 2014, 450 p.
3. Aliev Z.S., etc. Features of control of development of fields at their development by horizontal wells with sunflower pattern. M.: Nedra, 2014, 277 p.
4. Aliev Z.S., etc. The available theoretical bases of a method of research of horizontal gas wells on the stationary modes of a filtration. M.: Works RGU of oil and gas, 2013, no. 3.

2014/4
Technique of definition of change of coefficients of filtrational resistance of horizontal wells at increase in length of a horizontal site of a trunk in the course of development
Geosciences

Authors: Zagid S. ALIEV (born 1935) graduated from Azibekov Azerbaijani industrial Institute in 1957. Dr. Professor of Gas and condensate field development and operation department. Is the head and the executive of projects of development of oil and gas fields of Russia, Iran, Iraq, Vietnam, Kazakhstan, Algeria, Germany, etc., and also the author of normative documents of JSC Gazprom — instructions, the managements, standards of the enterprises. Author of 365 publications, including 35 monographs and 30 thematic brochures. E-mail: rgkm@gubkin.ru
Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and Gas in 1988. Candidate of Technical Sciences, associate professor of Gas and condensate field development and operation department. The expert in the field of development and operation of gas and gas-condensate fields and UGS. The author more than 30 publications, including 1 monograph.E-mail: kotlyarova_gubkin@mail.ru
Denis A. MARAKOV Candidate of Technical Sciences, associate professor of deve-lopment and operation of gas and gas-condensate fields. The expert in the field of development and operation of oil and gas fields. The author more than 30 publications, including 7 monographs and 5 thematic brochures in the field of the theory of development, research and operation of vertical and horizontal wells.E-mail: marakovdenis@rambler.ru

Abstract: For increase in the period of continuous annual gas production from fields the number of vertical wells increases. At application of horizontal wells continuous annual selection in the course of development can be provided by increase only in length of a horizontal site that significantly increases profitability of develop-ment of a deposit. Results of influence of increase in length of a horizontal site by coefficients of filtrational resistance which are necessary for forecasting of an output are presented. The importance of work consists in the offer of a method of calculation of sizes of these coefficients in process of increase in length of a horizontal hole

Index UDK: 551

Keywords: horizontal well, relative output of a well, current length of a horizontal site, completeness of opening of a fragment, coefficients of filtrational resistance, output of horizontal wells, strip fragment of a deposit, drainage zone

Bibliography:
1. Aliev Z.S., etc. Determination of necessary length of a horizontal trunk of a gas well in the course of development. Gas industry, 2005, no. 12, pp. 45-47.
2. Aliev Z.S., Bondarenko V.V. Tekhnologiya of application of horizontal wells: Manual. M.: Oil and gas, 2006, 712 p.
3. Aliev Z.S., etc. An approximate method of search of the optimum sizes of a squared fragment and its opening for providing the maximum output of a horizontal well. Drilling and oil, 2007, no. 2, pp. 17-19.
4. Aliev Z.S., Sheremet V.V. Determination of productivity of the horizontal wells which opened gas and gas-oil layers. M.: Nedra, 1995, 131 p.
5. Aliev Z.S., etc. Determination of key parameters of horizontal gas wells. M.: Prod. RGU center of oil and gas of name I.M. Gubkina, 2012.
6. Gritsenko A.I., Aliev Z.S. Rukovodstvo on research of wells. M.: Nauka, 1995, 523 p.
7. Aliev Z.S., Bondarenko of V.V. Rukovodstvo on design of development of gas and gas-oil fields. Pechora: Pechora time, 2002, 894 p.

2011/2
Approximate method for determining performance of horizontal gas well with partial penetration into deposit fragment in the form of sector
Drilling and development of hydrocarbon fields

Authors: Zagid S. ALIYEV was born in 1935, graduated form the Industrial Institute in Baku. He got the degree of Candidate of Technical Sciences in 1964, became Doctor of Technical Sciences in 1984. Нe is professor of the Department of the Development and Operation of Gas and Gas Condensate Fields at Gubkin Russian State University of Oil and Gas, member of the Russian Academy of Natural Sciences. He published 341 works including 52 monographs. E-mail: rgkm@gubkin.ru
Elena M. KOTLYAROVA graduated from Gubkin Russian State University of Oil and in 1988, and in 2006 defended thesis on “Development of methods of research and technology of operation of horizontal gas wells, which penetrated into heterogeneous low-productivity reservoirs (for ONGKM case study)”. She is Associate professor of the Department of Development and Exploitation of Gas and Gas Condensate Fields at Gubkin Russian State University of Oil and Gas, author of more than 20 scientific papers on the development of natural gas fields using horizontal wells. E-mail: kotlyarova_gubkin@mail.ru
Vladimir N. KOTLYAROV was born in 1962, graduated from Gubkin Russian State University of Oil and Gas in 1988 He is Head of the Laboratory of Geological and Hydrodynamic Modeling and Integrated Analysis of Wells of ITC Gazprom UGS. He is Postgraduate student of the Department of Development and Exploitation of Gas and Gas Condensate Fields at Gubkin Russian State University of Oil and Gas. E-mail: V.Kotlyarov@phg.gazprom.ru

Abstract: An approximate method for determining with an acceptable accuracy the performance of a horizontal gas well with partial penetration into the deposit in the form of a sector is proposed. To be able to determine the flow rate of a horizontal well, which penetrated into a fragment of a homogenous reservoir in the form of a sector a sector, we propose a method of replacing the sector with strip elements. The flow rate of these can be calculated using the formula for fully opened fragments.

Index UDK: 622.279

Keywords: horizontal well; fan drilling, sector penetration; penetration degree; flow rate of horizontal wells; sector element; strip fragment, average radius; variable radius; drainage area; coefficients of filtration resistance

Bibliography: