Removing Casing
During the well abandonment process, the rig is used to remove the casing and prepare the well for plugging. This step begins only after the wellhead has been safely removed. Workers then cut the casing near the surface. Once cut, the casing is pulled out of the wellbore using hoisting equipment such as casing jacks or winches. The removed casing can be salvaged for reuse or sent off for recycling, depending on its condition. Casing removal must be done carefully to prevent injuries and equipment damage.
Primary Hazards Associated with Casing Removal
- Struck-By Hazards: Workers are at risk of being struck by moving rig equipment such as casing jacks, power tongs, or casing elevators.
- Pinch and Crush Points: Hands, fingers, or other body parts can be pinched or crushed while handling or guiding casing sections during removal.
- Stored Energy Release: Pressurized fluids or gases may remain trapped in the casing. If released unexpectedly, these can cause injury or damage.
Safe Work Practices
- Inspect hoisting equipment, slings, and lifting tools before each use to make sure they are in safe working condition.
- Set up exclusion zones around the work area to keep unauthorized or non-essential personnel out of harm’s way.
- Use standardized hand signals and keep clear, continuous communication between all crew members during lifting and pulling operations.
- Carefully bleed off any residual pressure from casing or wellhead equipment before cutting or disconnecting any parts.
- Wear appropriate personal protective equipment (PPE), including gloves, hard hats, and safety glasses, while performing casing removal tasks.
Knowledge Check Choose the best answer for the question.
7-5. Which of the following is listed as a primary hazard associated with removing casing prior to plugging an abandoned well?
You forgot to answer the question!