At two recent DWOPs (here in Indonesia) the topic of offline M/U of equipment arose. The rigs are both doubles rigs, Loadcraft 1000 HP series (made in the US).
In addition to the use of BHA rollers (http://my-spread.com/discussions/294
), a suggestion was made that doubles of drill-pipe could be M/U on the lease and then picked up directly to the rotary and/or racked back.
In this day-and-age, every second counts ("marginal gains") towards the Perfect Well. So, our question is:
- Is anyone aware of this being done?
- If so, where and how?
- What size/weight/grade of pipe?
- What lessons learnt and precautions are required?
- Are you able to share with us: photos, procedures