Responsibilities for preparation, approval and content of the drilling programme.
Drilling Programmes are the approved instructions for carrying out activities and tasks which are required to achieve the objectives of the drilling process. Before commencing drilling operations, an approved signed copy of the Drilling Programme must be available on the rig site.
Responsibilities
The Drilling Supervisor and Operations Engineer shall ensure that:
- there are no anomalies in the programme
- all technical and safety issues are addressed
- all personnel at the rig site involved with the programme clearly understand their duties and responsibilities.
While activities and tasks related to the drilling progress are ongoing, it is the responsibility of the Drilling Supervisor to ensure that there is no divergence from the Drilling Programme unless a revision has been approved in accordance with the Drilling Programme revision procedure.
Preparation and Approval
The Drilling and Completion Programmes are prepared by the Operations Engineer and must be signed by the following personnel before they are considered approved for implementation:
Operations Engineer for the well
Senior Operations Engineer
Drilling Superintendent
Drilling Manager
Reservoir and Petroleum Engineering Manager
The Drilling Programme must be available for signature at least two weeks before the spud date, depending on the availability of the datasheet from petroleum engineering department.
Content of the drilling programme
The Drilling Manager shall ensure that the following subjects have been addressed in the Drilling Programme:
- Well objective(s) and target(s)
- Well datum level
- Expected TD
- Time versus depth graph (as applicable)
- Conductor co-ordinates (as applicable) and offset co-ordinates
- Water depth (for offshore wells)
- Non-standard operations
- Potentially hazardous operations (over pressures, shallow gas, collision risk, possible H2S, expected lost circulation zones, unusual casing string weights, etc.)
- Offset well data
- Expected pressures with depth versus pressure prognosis chart and table
- Leak off test requirements
- Hole deviation and survey requirements (as applicable)
- Milling operation
- Batch drilling
- Target tolerance (as applicable)
- Diverter / BOP requirements and test pressures for each hole section
- Bit Programme
- Hydraulics
- Well Control Procedures
- Wellhead specifications
- Casing programme
- Mud programme (as applicable)
- Cementing programme (as applicable)
- Logging programme (as applicable)
- Formation characteristics and depths of expected hydrocarbons
- Evaluation programme (if applicable)
- Simultaneous Drilling and production operations (for offshore operations if applicable)
- Rig move (for offshore operations)
- Rig move plan for onshore operations
- Suspension of operation
- Hand over form