Kazakhstan journal for oil & gas industryKazakhstan journal for oil & gas industry2707-42262957-806XKMG Engineering9969810.54859/kjogi99698Research ArticleAnalysis of the steam-thermal treatment at the Karazhanbas fieldҚozhashA. S.a_kozhash@kbm.kzKarazhanbasmunai JSC151220213452622801202228012022Copyright © 2021, Kozhash A.S.2021<p>The article describes the main features of the geological structure of the Jurassic-Cretaceous productive strata of the Karazhanbas field, located on the Buzachi Peninsula (Western Kazakhstan), and the effectiveness of thermal methods and their modifications to enhance oil recovery, which have been used in the field since the 80s of the last century. The use of thermal steam stimulation in the form of thermal slugs allows not only to cover most of the formation with thermal steam stimulation by switching to unheated water injection in a number of wells and transferring steam injection to other wells, but also to intensify the movement of the thermal slug in the formation during the cold water injection process. As a result, the steam-oil ratio when using thermal rims and increasing the steam injection rate can be several times less than with continuous slow steam injection. The use of thermal steam treatment allows increasing oil recovery by 35–45% of the initial balance oil reserves. Testing and implementation of new equipment and technology, as well as the study of world experience in the development of high-viscosity oil are currently relevant for the development of the Karazhanbas field.</p>welloil productionhigh-viscosity oilthermal methodsin-situ combustionthermal steam treatmentthermogravitational drainageoil incrementұңғымамұнай өндірутұтқырлығы жоғары мұнайтермикалық әдістерқабат-іші жанубу-термикалық өңдеутермогравитациялық дренаждаумұнай өсімділігіскважинадобыча нефтивысоковязкая нефтьтепловые методывнутрипластовое горениепаротепловая обработкатермогравитационное дренированиеприрост нефти1.Найбаков Н.К., Гарушев А.Р. Тепловые методы разработки нефтяных месторождений. – М., Недра, 1988, 79 с. // Najbakov N.K., Garushev A.R. Teplovye metody razrabotki neftyanyh mestorozhdenii [Thermal methods for the development of oil fields]. – Moscow, Nedra, 1988, 79 p.2.Бурже Ж., Сурио П., Камбарну М. Термические методы повышения нефтеотдачи пластов. – М., Недра, 1988, 116 с. // Burzhe ZH., Surio P., Kambarnu M. Termicheskie metody povysheniya nefteotdachi plastov [Thermal methods for the enhanced reservoir recovery]. – Moscow, Nedra, 1988, 116 p.3.Салимгереев М.Ж., Червяков Н.Н., Симонов В.Л., Тулешов К.Т. Внедрение технологии влажного внутрипластового горения на месторождении Каражанбас. – Экспрессинформ, ВНИИОЭНГ. Сер. «Разработка нефтяных месторождений и методы повышения нефтеотдачи», М., 1991, № 10, с. 23–30. // Salimgereev M.ZH., CHervyakov N.N., Simonov V.L., Tuleshov K.T. Vnedrenie tekhnologii vlazhnogo vnutriplastovogo goreniya na mestorozhdenii Karazhanbas [Implementation of wet in-situ combustion technology at the Karazhanbas field]. – Ekspressinform, VNIIOENG. Ser. «Razrabotka neftyanyh mestorozhdenii i metody povysheniya nefteotdachi» ["Development of oil fields and methods of enhanced oil recovery"], Moscow, 1991, № 10, pp. 23–30.4.Иванов В.А., Киинов Л.К., Козловский А.Г., Червяков Н.Н. Динамика дебитов скважин на месторождении Каражанбас при разработке на естественном режиме. – ВНИИОЭНГ, Сер. «Вопросы совершенствования технологии и технических средств при термических методах добычи нефти», М., 1987, с. 4–6. // Ivanov V.A., Kiinov L.K., Kozlovskii A.G., Chervyakov N.N. Dinamika debitov skvazhin na mestorozhdenii Karazhanbas pri razrabotke na estestvennom rezhime [Dynamics of well flow rates at the Karazhanbas field during natural recovery drive]. – VNIIOENG, Ser. «Voprosy sovershenstvovaniya tekhnologii i tekhnicheskih sredstv pri termicheskih metodah dobychi nefti» [“Issues of improving technology and technical means for thermal methods of oil production”], Moscow, 1987, pp. 4–6.5.Исследование физико-химии внутрипластопого горения. Отчет о научно-исследовательской работе по теме ХД–I–88. Руководитель А.А. Сагындыков. – Алма-Ата, КМНТЦ, 1990. //Issledovanie fiziko-himii vnutriplastopogo goreniya. Otchet o nauchno-issledovatel'skoi rabote po teme HD–I–88 [Study of the physico-chemistry of in-situ combustion. Report on research work on the XD-I-88 topic]. Rukovoditel' A.A. Sagyndykov. – Alma-Ata, KMNTC, 1990.