Summary
Worldwide, the costs associated with the exploration and production of oil
have increased almost exponentially in the past 5 years. This sharp rise in
daily costs has also led to a new urgency from operators to find more-reliable
and -efficient ways of doing business.
Shock and vibration (S&V) are the leading causes of failure for
measurement-while-drilling (MWD) and rotary-steerable systems today. These
failures have a major impact on operators and service companies, costing
millions of dollars in repairs and hours of rig time.
To better understand downhole dynamics, a wide variety of service companies
now offer lateral, axial, and transverse-shock measurements, along with
downhole rev/min (RPM) readings. In the best case, these measurements offer a
reactive method of drilling, and in the worst case, they provide no help in
solving the problem or in preventing damage to the bottomhole assembly
(BHA).
For S&V measurements to be effective, operators and service companies
must work together to create a comprehensive process that includes each phase
of drilling--planning, execution, and evaluation. An S&V standard combined
with increased client awareness and education has allowed a new level of
success to be achieved at the rigsite. Now, S&V issues at the rig can be
identified in real time and monitored remotely from an operations-support
center. This communication structure, coupled with prejob planning and modeling
and the capture of post-run lessons learned, can be used to offer solutions
when problems arise, thereby preventing damage to the BHA, reducing rig
non-productive time (NPT), and improving the rate of penetration (ROP).
© 2009. Society of Petroleum Engineers
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History
- Original manuscript received:
17 May 2007
- Meeting paper published:
11 March 2007
- Revised manuscript received:
29 April 2008
- Manuscript approved:
6 May 2008
- Published online:
1 June 2009
- Version of record:
1 June 2009
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