WE Report

Lessons Learned

Lessons Learned865


Operator Rig Discipline / Origin Project Phase Well Section Date What Happened

DNO
301 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
N/A 07/01/2019 DNO subsurface department wanted to use new OBM for drilling the sidetrack reservoir section.


PDF


Edit


DNO
302 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
N/A 07/01/2019 Perform sidetrack casing design using PP and FG based on planned sidetrack trajectory.


PDF


Edit


DNO
303 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
N/A 07/01/2019 Geological target boxes developed late in planning phase. This resulted in less time for evaluating . . .


PDF


Edit


DNO
304 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Rig move 07/01/2019 DP trial was performed, spent 5 effective hours (+ 3 hours WOW).


PDF


Edit


DNO
307 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Pilot hole section 07/01/2019 Pilot hole encountered shallow gas. Observed shallow gas flowing out of well when RIH to open up . . .


PDF


Edit


DNO
308 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Pilot hole section 07/01/2019 Pilot hole drilled to TD before identifying shallow gas. Resulted in having to order out more . . .


PDF


Edit


DNO
309 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Surface section 07/01/2019 Not able to use the IRN to MU the motor assembly to the ARC-9 assembly due to short distance between . . .


PDF


Edit


DNO
310 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Surface section 07/01/2019 Not optimal cement recipe, needed 25 min to clean tanks between lead and tail slurry.


PDF


Edit


DNO
311 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Surface section 07/01/2019 Cement slurry was changed to a gas-tigh slurry due to encountering shallow gas in pilot hole. Due to . . .


PDF


Edit


DNO
312 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Intermediate section 07/01/2019 The 17 1/2″ section was drilled, but it proved difficult to get hold of Glycol for the KCl mud.


PDF


Edit


DNO
315 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
Intermediate section 07/01/2019 Had to increase MW from the planned 1.48 sg to 1.52 sg at TD due to cavings.


PDF


Edit


DNO
318 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
N/A 07/01/2019 Used the 1 x 2 m pup, had we crossed threads we had no back-up.


PDF


Edit


DNO
325 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
N/A 07/01/2019 Only one subsea engineer on rig.


PDF


Edit


DNO
326 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
N/A 07/01/2019 Fluid slopping into flowline from shaker pits due to Free Surface Effect during periods of high rig . . .


PDF


Edit


DNO
329 – DNO

Island Innovator Drilling Planning 6507/7-16 S
Canela
P&A 07/01/2019 During M/U of 20″x36″ cutting assembly (MOST tool), had to break off MOST tool above space out pup . . .


PDF


Edit


New Lesson Learned

You do not have permission to view this form.




\n\t\t

\n\t\t\t\n\t\t\t