All Days · 2004 · 11 citations · 4 references
Abstract During the past 7 years, rotary steerable drilling technology has emerged from prototype status to a standard application world wide. This paper focuses on the latest generation integrated Rotary Closed-Loop System which now enables the industry to benefit from this technology in hole sizes from 5 7/8"-18 ¼". The paper discusses the integrated BHA concept and the sequential implementation of additional BHA components. Modular positive displacement motors placed immediately above the steering device simultaneously gives another step change in drilling performance while reducing casing wear and extends the drilling envelope. The paper provides an insight into applications where the integration into the rotary closed-loop BHA, of real-time Logging While Drilling (LWD) formation pressure measurements and real time acoustic property services has complimented, or indeed eliminated the need for, wireline logging runs. Using such an integrated Rotary Closed-Loop System in the Norwegian Troll Field created incremental production revenue of 6 Billion USD.
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