Plug & Abandonment P18
Start Engineering: May 2021
End Execution: June 2022
Objective: Plug & Abandonment of multilateral well
Depth (MD): 4000m
Depth (TVD): 3500m
| Client: | TAQA (Porthos) |
| Location: | Dutch sector North Sea |
| Well: | P18 |
| Start Engineering: | May 2021 |
| End Execution: | June 2022 |
| Objective: | Abandonment of multilateral well to make the reservoir suitable for CO2 injection from other wells in the field |
| Depths (MD): | 4000m |
| Depths (TVD): | 3500m |
| Role of WEP: | Supply of senior well engineer to the TAQA project team during preparation and execution of the project. Supply of Sr. DSV during the rig operations. |
| Challenges: | Losses due to the well being connected to two depleted reservoir sections. Retrieval of the whipstock to regain access to the motherbore well section. |
Project Description
Involvement of WEP in the project started in May 2021 in preparation phase of the project; consisting of the preparation of the well intervention design, work program and various procurement.
The original offshore well was drilled in 1997 and a sidetrack to convert the well to a multilateral was added in 2003. The well was producing gas co-mingled prior the well operations. Operations were performed with the Valaris 123 jack-up rig.
The lower abandonment plugs were designed to be a CO2 resistant fullbore formation plug. To set this plug in the motherbore, the sidetrack liner and whipstock needed to be recovered. As a contingency, in case of inability to retrieve the whipstock, an intercept well design and program was prepared in cooperation with Wild Well Control.
Jackup Valaris 123 positioned next to P18 platform