Drilling in the Statfjord Field has become increasingly challenging as remaining oil pockets require designer wells, horizontal wells, or Extended Reach Drilling (ERD) wells with great demand for reservoir navigation in three dimensions. Until recently this has been performed with steerable motor assemblies, with frequent steering difficulties in the reservoir sands. Low rate of penetration (ROP) while sliding has given an overall low drilling efficiency, and in some cases inadequate steering ability has resulted in a less than optimum wellbore placement. Long sliding intervals have also resulted in poor hole cleaning, which has contributed to stuck drill string and lost circulation problems. This paper presents the introduction of a rotary steerable system in the multilateral horizontal well C-23 in the Statfjord Field, and how this improved drilling performance over comparable wells in the reservoir. The following topics are discussed in the paper: Field description and brief overview of directional drilling challenges in the Statfjord Field. Statoil's active role in the development of rotary steerable systems. Functional description of the rotary steerable system, highlighting the technology's benefits compared to traditional directional drilling methods. Why well C-23 was chosen as a suitable candidate for the rotary steerable system, becoming the first successful utilization of this promising technology in the Norwegian Sector. Case history, emphasizing directional control, drilling efficiency improvement, and other valuable experiences from utilizing the rotary steerable system.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Rotary steerable system improves reservoir drilling efficiency and wellbore placement in the Statfjord Field


    Contributors:
    Andreassen, E. (author) / Blikra, H. (author) / Hjelle, A. (author) / Kvamme, S.A. (author) / Haugen, J. (author)


    Publication date :

    1998


    Size :

    6 Seiten, 14 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Drilling with rotary steerable system reduces wellbore tortuosity

    Weijermans, P. / Ruszka, J. / Jamshidian, H. et al. | Tema Archive | 2001


    Rotary-steerable technology lowers drilling time, well costs

    Grini, M. / Rice, B. / Stromberg, S. | Tema Archive | 2002


    The educational experience of welding on Statfjord 'B'

    Tandberg, S. / Hayling, L. | Tema Archive | 1982


    WELLBORE DRILLING SYSTEM

    ROODENBURG JOOP / WIJNING DIEDERICK BERNARDUS / HESSELS HENDRIK | European Patent Office | 2016

    Free access

    WELLBORE DRILLING SYSTEM

    ROODENBURG JOOP / WIJNING DIEDERICK BERNARDUS / HESSELS HENDRIK | European Patent Office | 2017

    Free access