Kazakhstan journal for oil & gas industryKazakhstan journal for oil & gas industry2707-42262957-806XKMG Engineering10819610.54859/kjogi108196Research ArticleApplication of geomechanics in the construction of horizontal wells at the fields of Embamunaigas JSCRomanenkoPavel S.p.romanenko@niikmg.kzAlekhinIlya G.I.Alekhin@niikmg.kzAshimovKanat B.K.Ashimov@niikmg.kzGubashevSarsenbay A.Gubashev.S@kmge.kzKMG Engineering LLPDeGolyer and MacNaughton CorpAtyrau branch of “KMG Engineering LLP”200720224235462505202231052022Copyright © 2022, Romanenko P.S., Alekhin I.G., Ashimov K.B., Gubashev S.A.2022<p><em>Horizontal drilling is currently being actively developed in the near and far abroad to increase oil production, and Embamunaigas JSC is a prime example of this type of drilling in Kazakhstan. At the same time, horizontal drilling is a fairly complex and costly process, just like the construction of deep exploration wells, which requires a comprehensive approach to planning and execution of work.</em></p> <p><em>Geomechanical modelling plays a crucial role in selecting process parameters for drilling, determining optimum well design and other characteristics required to ensure wellbore integrity and overall well construction success.</em></p> <p><em>The mechanical properties model takes into account rock strength characteristics, horizontal stress directions of the geological environment and many other aspects that help make drilling safer, reduce the risk of complications and maintain borehole integrity.</em></p> <p><em>This study describes the process of creating geomechanical models for the construction of complex horizontal wells in the fields of Embamunaigas JSC based on the geomechanical core studies carried out at the S. Nurzhanov field and an analysis of the hydraulic fracturing database for the fields of Embamunaigas JSC. As a result, a safe drilling mud density range (“safe drilling window”) was determined and recommendations were given for the optimisation of drilling parameters and well design.</em></p>horizontal drillinggeomechanical modellingrock strength characteristicssafe drilling corridorborehole stabilitycaving formation gradientкөлденең бұрғылаугеомеханикалық модельдеутау жыныстарының беріктік сипаттамаларықауіпсіз бұрғылау дәлізіұңғыма оқпанының тұрақтылығыүңгір градиентігоризонтальное бурениегеомеханическое моделированиепрочностные характеристики породыкоридор безопасного бурениястабильность ствола скважиныградиент обвалообразования1.Месторождения нефти и газа Казахстана. Справочник. – Алматы, Минеральные ресурсы Казахстана, 1999, 325 с. // Mestorozhdenija nefti i gaza Kazakhstana [Oil and gas fields in Kazakhstan]. 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