The Champion West field was discovered in 1975 and named Champion West in 1990. The field is located in the North of the Brunei Offshore sector.

Phase 3 of this project, is the latest development with 20 wells (oil & gas). These Extended Reach Drilling (ERD) wells, are designed as "snake" wells penetrating the reservoir several times, in order to create multiple drainage points snake well develop oil rim reservoirs. All the wells are of different horizontal lengths, as can be seen in Figure 1 and 2. 

The objective of this paper, is to present the learning and best practices gained after drilling 5 of these snake oil wells, during Champion West phase 3a. Best practices refers to those developed during the project, that have resulted in:

  • reduction of costs, by reducing trouble time (Non Productive Time)

  • reduction bit off-bottom circulation times

  • increase of bit on-bottom time

  • improved ability to clean the hole, resulting in trouble-free trips

  • trouble free casing runs

  • the deepest SMART completion in the world

The 350 days campaign was delivered 49 days earlier than planned and below budget. Total cumulative drilling length was of 34 km. This performance allowed the Well Construction team, to achieve the Shell Global EP, Rig of the Fleet award, twice in 3 years.

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