Қазақстанның мұнай-газ саласының хабаршысыҚазақстанның мұнай-газ саласының хабаршысы2707-42262957-806XKMG Engineering10899410.54859/kjogi108994Research ArticleImproving the quality of well cementing through the use of nanocomposites: field data analysis and evaluation of their effect on cement slurry propertiesKhassenovAskhat G.a.khassenov@kmg.kzhttps://orcid.org/0009-0009-7933-4321MardanovAltynbek S.a.mardanov@kmge.kzhttps://orcid.org/0000-0002-8342-3046AbdrakhmanovDinmukhammed R.d.abdrakhmanov@kmge.kzhttps://orcid.org/0009-0004-6449-6241SabirovBolatkhan F.<p>PhD</p>b.sabirov@kmge.kzhttps://orcid.org/0009-0006-2206-8542ShagilbayevAdil Zh.a.shagilbayev@kmge.kzhttps://orcid.org/0009-0009-3653-7882UmraliyevBaurzhan T.<p>D. Sc. (Engineering)</p>b.umraliyev@kmge.kzhttps://orcid.org/0009-0000-9083-5308KMGAtyrau Branch of KMG EngineeringKMG Engineering300920268320301405202629062026Copyright © 2026, Khassenov A.G., Mardanov A.S., Abdrakhmanov D.R., Sabirov B.F., Shagilbayev A.Z., Umraliyev B.T.2026<p><strong>Background:</strong> The challenging geological and thermobaric conditions of the Western Kazakhstan oil fields impose stringent requirements on cement slurry systems, while standard Portland cement formulations frequently fail to provide adequate zonal isolation over the well’s production lifecycle.</p> <p><strong>Aim:</strong> This study aims to identify the key limitations of conventional cement compositions and substantiate the feasibility of introducing SiO₂, Al₂O₃ nanoparticles and carbon nanotubes to improve the rheological and mechanical properties of cement slurries.</p> <p><strong>Materials and Methods:</strong> A comparative analysis was conducted using actual cementing program data from a well at the North Uaz field and a well at the Western Prorva field, evaluating slurry density, viscosity, thickening time, fluid loss, and compressive strength.</p> <p><strong>Results: </strong>Standard formulations exhibited fluid loss exceeding acceptable thresholds and compressive strength below the required minimums; nanomodified compositions demonstrated a fluid loss reduction of up to 40% with SiO₂ addition and a 15–25% increase in early compressive strength with Al₂O₃.</p> <p><strong>Conclusion: </strong>The introduction of nanocomposite additives is technically justified for overcoming the limitations of conventional cement systems under Western Kazakhstan field conditions.</p>cement slurrywell cementingnanomaterialsnanocompositescement sheath strengthfluid losstwo-stage cementingzonal isolationтампонаждық ерітіндіұңғыманы цементтеунаноматериалдарнанокомпозиттерцемент тасының беріктігісұйықтық сіңіруіекі сатылы цементтеузоналық оқшаулауцементный растворцементирование скважиннаноматериалынанокомпозитыпрочность цементного камняводоотдачадвухступенчатое цементированиезональная изоляция1.MCF Services LLP, Munai Service LTD LLP. 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