Salt: ESCO – Frisia BAS-3O Workover 2019

Salt producing well BAS-3O workover

Start Engineering: December 4th, 2018
End execution: Septembre 30th, 2019

Result: The cavern was plugged, in preparation for full abandonment the well

Depth (MD): 4444m
Depth (TVD): 2558m

Project Summary

Client: ESCO - Frisia Zout B.V.
Location: Pietersbierum, BAS-123
Wells: BAS-3O
Start Engineering: December 4th, 2018
End Execution: September 30th, 2019
Target: Re-configure leaching strings
Result: The cavern was plugged, in preparation for full abandonment the well.
Depths (MD): 4444m
Depths (TVD): 2558m
Role of WEP: IPM, engineering, procurement and execution of works
Challenges: During project changing well conditions, resulting in large scope changes. Technical challenging snubbing operations, large size strings handled under >200bar WHP. Combined operations snubbing and coil tubing.
New technology: BHGE DECT cutter on 9 5/8” casing

Project Description

The project objective started with a reconfiguring of the leaching strings, regular workover operations. During the engineering (pre-operations) the downhole conditions changed and a repair of the last cemented casing seemed to be required. During execution additional information gathered showed that the repair was no longer a valid option. The cavern was plugged, in preparation for full abandonment the well.