Salt: Frisia HVM-02 drilling

Salt well HVM-02 drilling

Start Engineering: January 2018
End execution: November 2020

Objective: Design and drill an ERD salt well, from the FRISIA Havenmond location to the Havenmond concession.

Depth (MD): 4950m
Depth (TVD): 3021m

Project Summary

Client: FRISIA
Location: Havenmond
Wells: HVM-02
Start Engineering: January 2018
End Execution: November 2020
Objective: Design and drill an ERD salt well, from the FRISIA Havenmond location to the Havenmond concession.
Depths (MD): 4950m
Depths (TVD): 3021m
Role of WEP: Design of well, procurement support and operational support during drilling of well.
Challenges: S-shape well with large step-out and large hole sizes. During drilling experienced challenges with the under reamers, the instability of formations and a pandemic situation.
New technology: n/a

Project Description

The HVM-02 well is the first well to be drilled to the Havenmond concession. The project started with the design of the well. The requirements of the well are S-shape (vertical in the Salt), large step out to reduce subsidence on the land, large wellbore (LCC 13 3/8”) to accommodate simultaneous injection, production and cavern control (blanket).

The design resulted in a casing configuration; 30”- 24” – 18 5/8” – 16” – 13 3/8” – 11 ¾” – 7”. The step out and S-shape resulted in a tangent of 68deg, with an early build-up in the lower North sea group to 68deg.

The drilling rig was a key parameter in drilling the well, >450ton >50 ft.lbs (120rpm) and >3450HP pump power. The KCADEUTAG T-46 was available. The rig was upgrade with a BENTEC750 topdrive to be able to supply the required torque.

Drilling operations started in November 2019 and lasted till August 2020. Due to set backs on the under-reaming of the 16”x20”section and hole stability challenges on the 16”x20” and 14 ¾”x16” the drilling took a lot longer than planned. Additional challenge during the project was the COVID-19 pandemic. For the drilling several service suppliers were contracted with basis’s in several countries (Italy, Germany, Scotland), requiring vigilant personnel planning to prevent an outbreak on the drilling location. Thanks to the efforts of the total team the well was finished as per design and producing salt.