Responsibilities (Planning, Supervision and Verification) during abandoment:
Drilling Engineer
The Drilling Engineer shall be responsible for preparing the Suspension or Abandonment Programme and for ensuring that:
the final well status meets the statutory requirements regarding zonal isolation
primary well control is in place and shall not deteriorate with time
economical use is made of rig time in placing and testing cement plugs.
Drilling Supervisor
The Drilling Supervisor shall ensure that the requirements for the suspension or abandonment detailed in the Abandonment Programme are carried out by the Drilling Contractor in accordance with the standards and procedures contained in this manual document.
Planning, Supervision and Verification
The general responsibilities for planning, supervision and verification of abandonment and suspension are listed in the following table:
|
Action |
Execution |
Quality Control |
|
Prepare Temporary Suspension / Abandonment Programme |
Drilling Supervisor |
Head of Onshore / Offshore Operations |
|
Set cement plugs |
Drilling Contractor |
Drilling Supervisor |
|
Set electric line plugs |
Logging Contractor |
Drilling Supervisor |
|
Set slickline plugs |
Well Servicing Contractor |
Drilling Engineer |
|
Cut casing and recover wellhead |
Drilling Contractor |
Drilling Supervisor |
|
Nipple up and down trees/BOP’s |
Drilling Contractor |
Drilling Supervisor |
|
Install suspension cap and pressure test |
Drilling Contractor |
Drilling Supervisor |
|
Ensure that HSE requirements are complied with on site |
Drilling Contractor |
Drilling Supervisor |