The world practice has shown that the development of shelf multi-reservoir fields is associated with challenges when forming a development system due to reservoir heterogeneity, lateral mismatch of productive reservoirs, as well as technological challenges related to well design and construction.
Wells on an offshore platform can be both multi-lateral vertical with dual-completions and targeted horizontal extended-reach wells (ERW). The operation of such wells imposes obligations on a subsoil user to perform regular PLT in order to organize well interventions (WI), to use innovative technologies for active inflow control, which, in turn, is a highly effective way to control water inflows from highly permeable intervals and gas inflows from gas caps.
The production well pattern is formed with the utmost precision and detail. When drilling from the shore or from a platform, there is a risk of wellbore crossing, therefore, spatial control over the well trajectories is carried out while drilling.
In order to maintain reservoir pressure (RPM), edge or peripheral water flooding is often used. In rare cases, barrier flooding is used, in particular, agent injection into the top of a structure, i.e. a gas cap.
The number of drilling slots when drilling from a platform is usually limited, therefore, in order to increase oil recovery, special attention is paid to identifying areas with low efficiency of reservoir pressure maintenance and to developing measures on conformance control and isolation of water-flooded intervals.
The paper describes the existing system for the development of a multi-reservoir field X and an analysis of the operation of development wells in order to identify problem areas. The effect of injection wells on offset production wells was analyzed and the possibility of auto-hydraulic fractures was assessed using the existing injection wells. Recommendations were given to increase oil recovery by optimizing the reservoir pressure maintenance system, to drill new wells, including multilaterals, in the conditions of the continental shelf from an offshore platform with a limited number of wellheads (slots) and infrastructure limitations related to compressor and separator capacity.
water flooding optimization, dual completions, inflow control system, flow simulation model, water flooding system performance, auto hydraulic fracturing, multilateral wells, multi-reservoir field, gas caps, drilling slots, offshore platform
A.E. Tasmukhanova, R.R. Shigapova Osobennosti razrabotki shel'fovyh mestorozhdenij nefti [Aspects of offshore oil field development]. Vestnik Evrazijskoj Nauki, 2018, No.2 (in Russian)
E.S Zakirov, S.N. Zakirov, I.M. Indrupsky, D.P. Anikeev Primenenie intellektual'nyh skvazhin v sistemah razrabotki neftyanyh i gazovyh mestorozhdenij [Use of smart wells in oil and gas field development systems]. Aktualnye problemy nefti i gaza, 2018, No.2 (in Russian)
Glandt C.A. Reservoir management employing smart wells: a review // paper SPE 81107. Trinidad, Latin American and Caribbean, 30 April, 2003, 8 p.
McInroy S.H., Delong T.W. Determination of injection interval and profile from temperature and pressure surveys on a gas injection well // Paper SPE 1447, Denver, Colorado, 23-24 May 1966. 11 p. (DTS)
Oberkircher J., Cavender T., Nielson V.J., Beleau M. Intelligent multilateral: the next step in the evolution of well construction // Paper OTC 14253, Houston Texas, USA, 6‑9 May 2002, 9p.
A.Yu. Topal, V.V. Firsov Osobennosti razrabotki karbonatnyh plastov mestorozhdenij OAO «Udmurtneft'» s neftyanymi otorochkami i gazovymi shapkami s primeneniem bar'ernogo zavodneniya [Aspects of carbonate reservoir production in Udmertneft’s fields containing oil rims and gas caps using barrier waterflooding]. Neftegazovoye delo, UDC 622.276.1/.4(470.5), 2019 (in Russain)
R.A. Gilmutdinov, V.L. Malyshev, A.R. Nurtdinov Analiz vliyaniya priemistosti nagnetatel'nyh skvazhin na razvitie treshchin avtoGRP [Analysis of well injectivity effect on hydraulic fracture propagation]. Neftegazovoye delo, UDC 622.276.43, 2019, No.4 (in Russian)
I.A. Zhdanov, A.R. Sharifov Rezul'taty aprobacii proksi-modeli plasta dlya optimizacii zavodneniya na primere plasta H Vyngapurovskogo mestorozhdeniya [Results of field proxy-model validation to improve water flooding by the example of X Vyngapurovskoye field]. PRONEFT, UDC 622.276.1/4.001.57, 2019, No.2 (in Russian)
V.A. Baikov, A.Ya. Davletbaev, T.S. Usmanov Special'nye gidrodinamicheskie issledovaniya dlya monitorniga za razvitiem treshchin GRP v nagnetatel'nyh skvazhinah [Special flow tests to monitor fracture propagation in injection wells]. Neftegazovoye delo, 2011, No.1 (in Russian)
O.V. Yevseev, A.V. Kolonskikh, I.D. Latypov, E.K. Umatov Metody issledovaniya treshchiny avtoGRP v nagnetatel'nyh skvazhinah [Methods for hydraulic fracture studying in injection wells]. OOO RN-UfaNIPIneft, UDC 622.276.66СG, 2013 (in Russian)
D.V. Yesipov, D.S. Kuranakov, V.N. Lapin, S.G. Chernyi Matematicheskie metody gidrorazryva plasta [Mathematical methods of hydraulic fracturing]. Institute of Computer Technologies, Novosibirsk, 2014, No.2 (in Russian)
A.A. Barenbaum, S.N. Zakirov, E.S. Zakirov Intensifikaciya pritoka glubinnyh uglevodorodov [Stimulation of abyssal hydrocarbons production]. Reports of Academy of Sciences, 2006, No.2 (in Russian)
Payne J. et al. Controlling water production using intelligent complesion technology in multilaterals, Saih Rawl Field, Oman // Paper prepared for presentation at the Oil and Gas J. High-Tech Well Conference. Galveston, Texas, USA, 11-13 February 2003.
Schlumberger and CNOOC install world`s first intelligent completion in a sophisticated multilaterals well in South Java Sea // Schlumberger, Houston, Texas, USA, 1 November 2002.
A.V. Tropin, Specialist, LLC «Tyumen Petroleum Research Center»
A.V. Tropin, A.T. Zhubanov, D.S. Malyushko, T.A. Pospelova, A.S. Sergeev Optimizacija realizuemoj sistemy razrabotki v uslovijah ogranichennogo fonda skvazhin na mnogoplastovom mestorozhdenii [Optimization of existing development system under conditions of limited wells in a multi-reservoir field]. Neftyanaya Provintsiya, No. 4(24), 2020. pp.129-148. DOI https://doi.org/10.25689/NP.2020.4.129-148 (in Russian)