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Equipment related drilling problems

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Most drilling problems result from unseen forces in the subsurface. But the equipment involved can also be a source of problems, as can personnel.

Equipment

The integrity of drilling equipment and its maintenance are major factors in minimizing drilling problems. The following are all necessary for reducing drilling problems:

  • Proper rig hydraulics (pump power) for efficient bottom and annular hole cleaning
  • Proper hoisting power for efficient tripping out
  • Proper derrick design loads and drilling line tension load to allow safe overpull in case of a sticking problem
  • Well-control systems that allow kick control under any kick situation
  • Ram preventers
  • Annular preventers
  • Internal preventers

Also necessary are:

  • Proper monitoring and recording systems that monitor trend changes in all drilling parameters and can retrieve drilling data at a later date
  • Proper tubular hardware specifically suited to accommodate all anticipated drilling conditions
  • Effective mud-handling and maintenance equipment that will ensure that the mud properties are designed for their intended functions

Personnel

Given equal conditions during drilling/completion operations, personnel are the key to the success or failure of those operations. Overall well costs as a result of any drilling/completion problem can be extremely high; continuing education and training for personnel directly or indirectly involved is essential to successful drilling/completion practices.

References

See also

Noteworthy papers in OnePetro

External links

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