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Well Abandonments

Injection of recovered annular well fluids (e.g. oil base mud) into selected wells, is typically very cost-effective.

Planning for the use of wells for fluid re-injection (e.g. pipelines flushing, annular fluids from other P&A'd wells etc.) should consider:

  • well P&A sequencing;
  • impact of changes in operations (e.g. from production well to re-injection);
  • impact on flowline disconnection sequencing: - requirement for injectivity testing;
  • well P&A sequencing should ensure re-injection wells are abandoned late/last to ensure availability for make safe & flushing operations;
  • any impact due to the change in well operation should be identified / assessed at early planning stages;
  • requirements for injectivity tests should be identified early to ensure planning in line with operations;
  • plans for flowline disconnections should be in line with make safe / flushing operations.

Planning for the use of wells for fluid re-injection (e.g. pipelines flushing, annular fluids from other P&A'd wells etc.) should consider:

New!Planning can be optimised by using the additional bed spaces and capabilities of the well P&A rig to perform other preparatory activities (outside the critical path).

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