Case study 1
48 development wells data set analysed in 2002
NPT as reported 15-22%
Average development drilling phase time (spud to TD of wells) 51 days
Standard offshore non complex deepwater development wells no major well control, stuck pipe or instability events evident.
Note:,We the two DSVs (no night person or rig engineer in these days!) were personally selected to supervise phase 1 of project in 1996 to deliver 4 wells - several months ahead of operators planned schedule. These were easy wells to drill was our assessment. Operators consistently demonstrated a reluctance to want to learn/change anything. They wanted control in the office.
Because of this refusal we did not return to phase 2.
We remained in Norway then headed to Falklands for a 6 well campaign that was delivered 10 months ahead of operators planned schedule
Note: best wells from the xx data set, delivery circa 23-25 days. There were several real and evident drilling successes!
Loss Waste free target Drilling capability ( from evident wells data) was 17days. This is real!
34days on average thus evidently identified as lost/ wasted per well ( drilling phases only)
note; NPT captures little of this!
2009 we further reviewed and revisited new wells data ( with another operator who was a partner in field)
Key performance change deliverables? was that rotary steerable had been introduced. New generation MODU’s also now on hire.
Based on all loss/waste data previously presented evident improvement was expected?
Well results and trends concluded average well drilling time cost gaps evidently widening further.
Several factors were concluded and presented to partner why this was evidently so.
Operator demonstrated a reluctance to change current management strategy employed despite wells evidence that demonstrated little wells drilling delivery improvement.
Despite all Evidence based loss/waste wells data that existed.
It remains difficult to get certain Organisations persons to want to change from standard planning to fail measure manage control norms?