Within the last two years, multilateral systems offering full hydraulic and mechanical integrity have become commercially available in the petroleum industry. Emphasis has now begun to shift toward increasing the flexibility of these systems while minimizing the overall risk associated with the implementation of the multilateral. This paper details the development of a new Level 6 (TAML) type of multilateral that offers mechanical and hydraulic integrity and allows full liner bore access into either lateral, as demanded by the industry. Descriptions of the system and its development are discussed along with an assessment of the risk minimization possible with this new type of multilateral as compared to current state-of-the-art multilateral systems.
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