| Autor: |
Tommy M. Warren, Robert Strickler, Bill Lesso, Todd Mushovic |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
All Days. |
| DOI: |
10.2118/92195-ms |
| Popis: |
The hardware used in casing while drilling operations over the past 5 years has proved to be robust and reliable. Several directional wells have been drilled successfully with casing using positive displacement motors (PDMs), but the drilling efficiency was significantly degraded in most of them. This paper documents the drilling of the first two wells to utilize a rotary steerable system (RSS) to improve drilling efficiency when drilling with casing.Combining an RSS with casing while drilling operations seemed to be a natural way to eliminate the major weaknesses in motor bottomhole assembly (BHA) designs. Rotary steerable systems had not previously been used with casing while drilling because both are new technologies focused on different environments. Casing while drilling developed on land operations while rotary steerables have been popular for offshore projects.ConocoPhillips has drilled more than 94 wells in the Lobo trend of South Texas since 2001 using the new technique. As part of a technology demonstration project to accelerate the technology to offshore applications, two wells were drilled with an RSS.The first was an operational test conducted by drilling vertically with the RSS. The second was a full directional test o with a build to 29° directional turn. and then a drop to vertical, including a 100° |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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