Well Drilling Company in Napa County

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With the rapid development of the petroleum industry, serious corrosion of oil well casings, buried pipelines, and storage tank bottom plates in oil fields, especially oil well casings, has severely affected the production, development, management and environment of the oil field.

Corrosion exists on the inner and outer walls of oil and gas well casings, of which the internal corrosion is more serious.In addition, in the well section with large deviations, the mechanical damage of the tubing to the casing during operation accelerates the corrosion and perforation of the casing; the welding defects in the weld, the gap of the thread and other parts may easily cause differences in the electrochemical properties of the steel pipe surface.

It also leads to more serious corrosion damage.

Usually, the severely corroded well section is above 1000m.To solve the corrosion problem of the inner wall of oil well casing, generally add fungicides, corrosion inhibitors, adjust PH value, airtight oxygen isolation technology in the annular space of oil wells, and select low-strength tubing and casing in sulfur-bearing oil and gas fields.To solve the corrosion problem of the outer wall of oil well casing, cathodic protection technology should be adopted.

It has the characteristics of strong protection ability, simple construction and low investment.

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