Multilateral well, TAML multilateral well’s completion levels, multilateral well construction technology, re-installation of the whipstock.
The article highlights the experience of the first multilateral well construction in Zarubezhneft JSC. Introduction indicates the pressing problem of completeness of oil extraction from producing reservoirs, while the technology of multilateral wells construction is shown as one of the ways to solve the problem. Then the main advantages of multilateral wells are described in comparison with the directional ones as well as the preferred areas of their application. In addition, the main differences are highlighted between the levels of complexities of multilateral wells completion in accordance with the international classification of multilateral wells TAML.
In the article the authors describe the main technological solutions used during the construction of the first multilateral well in Zarubezhneft JSC, including the technology of repeated access to the sidetrack of a multilateral well after the extraction of the whip stock. The problems encountered during the construction of the well and the ways to solve them are indicated. The description of the Russian development in the field of multilateral wells completion is given, as well as its advantages and disadvantages are noted in comparison with similar foreign completion systems.
In conclusion, the final assessment of the results of the Russian technology for multilateral well completion application and of the possibility of its further replication is made.
References
1. Fraija J. et al., New aspects of multilateral well construction, Oilfield Review, 2002, Autumn.
2. TAML Multilaterals Guidebook, July, 1999, pp. 76–80.
3. URL: http://perfobur.com/
