The Importance Of A Well Protection Of Well During...

This section is an overview of the demands and tests associated with the integrity of well during production from and injection to a reservoir. The process begins after the well construction/well intervention organization has handed the well over to the production organization and concludes with a handover back to drilling and well organization for intervention, work-over or abandonment. Well integrity during this phase is used to keep hydrocarbons from the pay zone inside the well and by protecting it from leaking off to contaminating groundwater for environmental purposes. Well barriers are an envelope of one or several dependent barrier elements preventing fluids or gases from flowing unintentionally from the formation to the surface†¦show more content†¦These well barrier elements have to be tested and must meet the requirements and guidelines that will enable them carry out their demands. Demands are an event or a situation that needs functioning well barrier elements and they could be continuous or instantaneous. A continuous demand is the constant high temperature and pressure that a well barrier must be able to withstand to avoid burst or collapse while and instantaneous demand could be an emergency shutdown of the system from the platform. The importance of well integrity in the production phase cannot be undermined and it could be easily categorized in three phases, namely pre-production, in-production/operations and postproduction. Pre-Production This phase as the name implies, is the phase just before we start producing from the well and pumping up the hydrocarbons. This is also the phase when the completion personal hands over the well to the production crew. Well integrity in this phase is very critical because we have to check the well barriers and the well barrier elements and make sure they can handle the different types of demand prior to pumping the hydrocarbons out of the formation. Also important is the well barrier schematics and well barrier diagrams for the well and the necessary procedures to be taken should there be a well barrier failure . A well barrier schematic and well barrier