What are the consequences of oil tube casing damage?
The consequences of oil tube casing damage have significant adverse effects on oil field development, mainly including the following aspects:
Production disruption
Production string running difficulties: After casing damage, production string may not be able to run into the well normally, which directly affects the normal production of the well.
Fluid control failure
A large amount of water and sand discharge: If the damaged casing is in water or sand, a large amount of water and sand discharge will occur in the well, which will not only reduce the oil production of the well, but also may cause damage to production equipment and pipelines.
Retarded stimulation
Stimulation and injection measures can not be carried out: casing damage will limit the oilfield to take stimulation and injection and other enhanced oil recovery measures, such as high pressure water injection, carbon dioxide hutting, etc., which will affect the overall production and economic efficiency of the oilfield.
Increased security risk
Outside casing blowout risk: After casing damage, if it is not repaired in time, it may cause safety accidents such as outside casing blowout, posing a threat to personnel and equipment.
Serious economic loss
Well abandonment: Severe casing damage may lead to the abandonment of the well beyond repair, which will cause huge economic losses. For example, Daqing Oilfield once abandoned a large number of Wells due to casing damage, and invested a huge amount of money for treatment and renewal.
Environmental pollution
Oil and water leakage: Casing damage may also lead to oil and water leakage, causing pollution to the surrounding environment, affecting the ecological balance and human health.
