This paper describes some of the major issues around drilling world class ERD well in the Baltic Sea by a team of industry professionals from Lukoil, Schlumberger and Eurasia Drilling Company (BKE). The ultimate goal of the well construction organization was to deliver quality well under budget and within schedule with zero environmental impact.

A challenging well was successfully drilled to explore Cambrian production zone in D-41 structure. Key contributing factors to this success were:

  • solid preliminary analysis,

  • understanding of well bore stability by real time geomechanical modeling,

  • comprehensive directional analysis,

  • revised casing design,

  • application of latest drilling technologies,

  • creation of multi-discipline team with common goals.

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