FIELD EXPERIENCE WITH MULTILATERALS IN THE IDD-EL-SHARGI NORTH DOME FIELD, QATAR

This paper describes how one operator used the latest multilateral dri lling technology to improve the profitability of the Idd EI Shargi Nor th Dome (ISND) field, offshore Qatar (Fig. 1), Dual openhole laterals have been employed to simultaneously exploit the Shuaiba A and B oil r eservoirs. In each well drilled to date, the secondary wellbore has be en cased off at the lateral junction following drilling of the fullbor e lateral section. A mechanical junction has been used to ensure long- term mechanical integrity and re-entry capability following completion . To date, this technology has been used on five wells in the ISND fie ld (IS-74, IS-75, IS-76, IS-77, and IS-80) Approximately 10 additional complex-drainage-architecture wells are planned in 1997 to further de velop this field.