Precautions For Using Oil Casing

Oil casing is a steel pipe used to fix the wall of oil and gas wells or oil well holes to ensure the normal operation of the entire oil well during the drilling process and after completion. Oil casing is generally divided into pipeline casing, surface casing and technical casing. It is mainly used for drilling oil and gas wells and transporting oil and gas.

But many people may not know what should be paid attention to when using oil casing, so today Union Steel will introduce the precautions for using oil casing in this article.

1. First of all, we must do a good job in meeting water quality standards and strictly monitor and manage water quality. Carry out decontamination and re-injection, and strengthen the cleaning work of the main water pipeline to ensure that the water quality in the station and at the bottom of the well reaches standards and reduce the introduction of corrosion sources into the well. Ring space.

2. For newly put into production injection wells, the annular protection fluid should be mainly dosed and sterilized, and a system should be established to add it regularly.

3. In view of the fact that mechanical wear accelerates the corrosion of oil casing, it is recommended to install rubber rings at the oil pipe couplings or add centralizers at serious parts of the oil well.

4. When bacterial corrosion under scale is serious and SRB grows slowly and is killed under high temperature, 100°C high-temperature water or steam can be regularly injected into the annulus to kill SRB under scale.

5. Before the corrosion of water injection well casing is effectively controlled, it is not recommended to promote the use of cathodic protection and Atlas casing.