Kazakhstan journal for oil & gas industryKazakhstan journal for oil & gas industry2707-42262957-806XKMG Engineering10872210.54859/kjogi108722Research ArticleEnhancing the efficiency of hydraulic fracturing in mature fieldsChurakovArtyom V.ar.churackov@yandex.ruhttps://orcid.org/0000-0001-6070-9255PichuginMaxim N.pichugin.mn@gazprom-neft.ruhttps://orcid.org/0009-0007-4913-2820GorbachevYaroslav I.gorbachevyai@tomskneft.ruMusinOleg T.musin.ot@tomsk.gazprom-neft.ruKayukovKonstantin A.kayukovka70@gmail.comGroup of Companies Gazprom Neft120720246250600702202418042024Copyright © 2024, Churakov A.V., Pichugin M.N., Gorbachev Y.I., Musin O.T., Kayukov K.A.2024<p><strong>Background:</strong> In developing mature fields, the issue of technology efficacy is often raised in the context of constrained reservoirs, such as reservoirs with small interstices (barriers) bordering water- or gas-saturated reservoirs. The ability to effectively developing such reservoirs increases the production of current reserves and prolongs the "life" of the fields under development. This study presents the experience of Gazprom Neft Group in the development of terrigenous reservoirs, where there is a high risk of a fracture penetration into water- and gas-saturated intervals, by hydraulic fracturing. This experience can be taken as a basis for increasing the production of current reserves for some mature fields under similar geological conditions, where this problem is particularly acute and requires solutions that minimize risks.</p> <p><strong>Aim:</strong> Selecting the optimal technological approach to ensure the technical and economic viability of projects involving late-stage fields or assetswith with under- or overlying watered reservoirs.</p> <p><strong>Materials and methods:</strong> The materials address several technological trends, consisting of the completion specifics and the technological approach to hydraulic fracturing. As the main solution, a combination of low-viscosity fluids with a polymer concentration ranging from 2.8 to 3.2 kg/m³ in various executitions, 20/40 and 16/20 proppant fractions, as well as completion with a cemented equal-hole diameter tailpipe with burst port collar. The presented vision allows not only to significantly reduce the risks to fracture penetration in lower (upper) layers, but also allows, in cases of Screen Out, to perform clean out jobs without involving expensive Coil Tubing operations.</p> <p><strong>Findings:</strong> The implemented integrated solutions have proven their effectiveness at facilities with restrictions on fracture propagation in height. The use of low-viscosity liquids made it possible to reduce the increase in water saturation of products after stimulation, and design solutions reduced the costs associated with such as Screen Out.</p> <p><strong>Conclusion:</strong> The experience gained in applying new technological solutions to wells with a high risk of a fracture penetration into water- and gas-saturated intervals is quite successful, which confirmed by actual work and well analysis. Hydraulic fracturing on linear gel has a highly potential in the fields of Gazprom Neft Group and can be using on the similar formations.</p>hydraulic fracturinghorizontal wellslinear gelrupture couplingstwo-packer layoutrisk of breakthroughфрекингкөлденең ұңғымаларсызықтық гельжарылғыш муфталарекі пакеттік орналасубұзылу қаупігидроразрыв пласта, горизонтальные скважины, линейный гель, разрывные муфты, двухпакерная компоновка, риск прорыва1.Economides MJ, Martin AN. How to Decide Between Horizontal Transverse, Horizontal Longitudinal and Vertical Fractured Completion. SPE Annual Technical Conference and Exhibition; 19–22 Sept 2010; Florentia, Italy. Available from: https://onepetro.org/SPEATCE/proceedings-abstract/10ATCE/All-10ATCE/SPE-134424-MS/101937?redirectedFrom=PDF.2.Karpov VB, Parshin NV, Ryazanov AA, et al. Improved Hydraulic Fracturing Results Utilizing Microfrac Testing in a West Siberia Field. SPE Russian Petroleum Technology Conference; 16–18 Oct 2017; Moscow, Russia. Available from: https://onepetro.org/SPERPTC/proceedings-abstract/17RPTC/1-17RPTC/D013S040R005/244923?redirectedFrom=PDF.3.Nolte KG, Smith MB. Interpretation of Fracturing Pressures. SPE Annual Technical Conference and Exhibition; Sept 1979; Las Vegas, Nevada. Available from: https://onepetro.org/SPEATCE/proceedings-abstract/79SPE/All-79SPE/SPE-8297-MS/134903?redirectedFrom=PDF. Дата обращения: 08.12.2023.4.Ba Geri M, Imqam A, Bogdan A, et al. Investigate the Rheological Behavior of High Viscosity Friction Reducer Fracture Fluid and Its Impact on Proppant Static Settling Velocity. SPE Oklahoma City Oil and Gas Symposium; 9–10 Apr 2019; Oklahoma City, USA. Available from: https://onepetro.org/SPEOKOG/proceedings-abstract/19OKOG/2-19OKOG/D021S004R003/218743?redirectedFrom=PDF.5.Loginov A, Pavlova S, Olennikova O, et al. 2019. Introduction of Novel Alternative to GuarBased Fracturing Fluid for Russian Conventional Reservoirs. SPE Russian Petroleum Technology Conference; 22–24 Oct 2019; Moscow, Russia. Available from: https://onepetro.org/SPERPTC/proceedings-abstract/19RPTC/2-19RPTC/D023S011R003/219309?redirectedFrom=PDF.6.Churakov AV, Pichugin MN, Fayzullin IG, et al. Non-Guar Synthetic Hydraulic Fracturing Gels – Successful Concept of Choice. SPE Russian Petroleum Technology Conference; 26–29 Oct 2020. Available from: https://onepetro.org/SPERPTC/proceedings-abstract/20RPTC/3-20RPTC/D033S010R005/450136?redirectedFrom=PDF.7.Pelevin DM. Tekhnologii zakanchivaniya i issledovaniya skvazhin. Inzhenernaya praktika. 2013;6–7. (In Russ).8.Ovchinnikov VP, Shamsutdinov NM, Leontyev DS, et al. Horizontal well completion systems with multi-stage hydraulic fracturing for low-permeability, poorly drained, heterogeneous and dismembered reservoirs. Petroleum Engineering. 2023;21(6):138–154. doi:10.17122/ngdelo-2023-6-138-154.