Schlumberger

Industry Article: Directional Casing while Drilling Eases Path through Nahr Umr Shale Off Qatar

Publication: Offshore
Publication Date: 09/01/2009

Casing drilling has evolved quickly since gaining acceptance as a safe and cost-effective technique for well construction. Since the industry, and particularly the drilling community, has come to grips with the concept of drilling with casing, a collaborative effort of experienced drillers and talented engineers has produced several enhancements that have improved drilling efficiency and safety as well as widening the casing drilling capability window to include directional drilling. Improvements have been made in every facet of the technique, including bits, bottomhole assemblies (BHA), reamers, tool joints, and the myriad surface handling equipment required.




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