At unique Yaregskoye field heavy oil is produced by underground mining and also by wells drilled from earth surface. While drilling process the use of the aerated cements for well casing is caused by intensive absorption and high temperature loads. Grouting mixture Carbon Bio is aerated cements with adjustable density depending on extent of aeration. The cement stone received from aerated cement slurry allows to reduce mud density to 800 kg/m3.
Despite the Carbon Bio system implementation helps to improve cementation there are several problems need to be solved. Solvation of these problems demands to see casing technology and problems origin in new light. Yaregskoye field is developing by the steam assisted gravity drainage (SAGD) method. Two horizontal wells are located in parallel one over another. The lower one is applied to hydrocarbon production, upper one – for steam injection. During wells operation there are temperature expansions of casing strings, tightness of cement ring is broken, and breaks of fiber optic cables which are located along casing strings are noted.
For the solution of these tasks it is offered to use different schemes of completion of wells which provide partial cementation of production strings, arrangement fiber optic from systems in coil tubing or with the strengthened protection.
References
1. Loparev D.S., Molokanov D.R., Buslaev G.V., Osobennosti bureniya i zakanchivaniya gorizontal'nykh skvazhin s naklonennym ust'em pri razrabotke mestorozhdeniy vysokovyazkoy nefti parogravitatsionnym metodom (Features of drilling and completion of horizontal wells with an inclined wellhead at the development of high-viscosity oil deposits by a gravity method), Collected papers “Problemy razrabotki i ekspluatatsii mestorozhdeniy vysokovyazkikh neftey i bitumov” (Problems of development and operation of high-viscosity oil and bitumen deposits), Proceedings of Interregional scientific and technical conference, 13-14 November 2014, Ukhta: Publ. of USTU, 2014.
2. Loparev D.S., Chertenkov M.V., Yusifov A.A. et al., Improvement of drilling technology for the Yarega heavy oil field development by SAGD method with counter producing and injecting wells, SPE 171275, 2013.
3. Vasilenko I.R., Chertenkov M.V., Shepel' K.Yu., Likutov A.R., Bench tests of models of well and reservoir fixing with cumulative perforation (In Russ.), Neft'. Gaz. Novatsii, 2015, no. 12, pp. 21-26.
4. Vasilenko I.R., Chertenkov M.V., Results of jet perforation physical modelling in test-bench and pay sandstone particle size distribution study during steam treatment, SPE 182125, 2016.
