1. To make sure that the water quality meets the standards, and strictly monitor and manage the water quality. Implement cleaning and separate injection, strengthen the cleaning of main water pipelines, ensure that the water quality in the station and the bottom of the well meets the standard, and reduce the introduction of corrosion sources into the annular space;
2. For water injection wells that have been newly put into production, adopt annulus protection liquid mainly for sterilization, and form a system to do it regularly;
3. because of the accelerated effect of mechanical abrasion on the corrosion of oil casing, it is recommended to add a rubber ring to the tubing coupling or add a centralizer to the serious part of the good deviation to avoid the tubing scratching the casing and the tubing during the operation and water injection. One side touches the casing;
4. because of the severe corrosion of bacteria under the scale and the slow growth and killing of SRB at high temperature, high-temperature water or steam of 100 degrees Celsius can be injected into the annulus regularly to kill the SRB under scale;
5. It is not recommended to promote the use of cathodic protection and coated casing before the corrosion in the casing of the water injection well is effectively controlled.
Post time: Nov-22-2023