LSAW Steel Pipe

　　The casing pipe is a large-diameter pipe that acts as a fixed oil and gas well wall or wellbore. The casing is inserted into the wellbore and fixed with cement to prevent the wellbore from separating the formation and the wellbore from collapsing, and to ensure that the drilling mud circulates for drilling.Different types of casing used in oil extraction: 　　The surface oil casing is to protect the well from being contaminated by shallow water and shallow gas layers, supporting the piercing equipment and maintaining other layers of the casing. 　　The technical oil casing is to separate the pressures at different levels so that the drilling fluid can flow normally and protect the production casing to install the anti-burst device, the leakage prevention device and the tail pipe in the drilling. 　　The oil layer oil casing mainly exports oil and natural gas from the subsurface storage layer, protects the well with the liver, and stratifies the drilling mud. When producing oil casing...

　　The oil casing pipe is a large-diameter pipe that acts as a fixed oil and gas well wall or wellbore. The casing pipe is inserted into the wellbore and cemented to help the wellbore separate the formation and prevent the wellbore from collapsing, while ensuring that the drilling mud circulates for drilling. 　　1. first grasp the water quality standards, strict water quality testing and management. Implement decontamination and re-injection, strengthen the cleaning of the main water pipeline, achieve the standard water quality in the station and the bottom of the well, and reduce the introduction of corrosion sources into the annular space; 　　2. For the water injection wells that have been newly put into operation, adopt an annulus protection liquid based on dosing and sterilization, and form a system to regularly add; 　　3. In view of the acceleration of the corrosion of the oil casing pipe by mechanical abrasion, it is recommended to add a rubber ring to the oil pipe coupling or ...