This paper presents resufts from comparative laboratory tests of tfrret intartral plastic coatings rraedby one oil company for corrosion control in gas well tubulars. Prior to the testing program, coated tubulars from three different applicators were provided by supplier warehouses as equivalent materials for nse in sweet gas well Service. Coatings evaluations included autoclave,rocker arm, acid resistance and wire-line abrasion testing. Tests were designed to compare coating performance
under harsh conditions such as high water production or high -temperature, high-presurrre conditions. This was done to accelerate the testing program, but also to identify a superior product(s). Test results showed that the three coatings are not equivalent,and that each coating arm strengths in certain environments.
Keywords: internal plastic coatings, carbon dioxide, autoclavetests, rocker arm test, acid resistance, wireline abrasion resistance,gas well tubulars