Field Practices for Controlling Water-Dependent Sweet Oil Well Corrosion★,—A Report of Technical Unit Committee T-1C on Sweet Oil Well Corrosion(1), (Compiled by Task Group T-1C-1 on Field Practices(2)

Abstract

Abstract Field practices used by 19 companies for controlling corrosion in water-dependent sweet oil wells are reported. Limits at which corrosion becomes detrimental are given in terms of percent water produced, iron concentration, coupon corrosion rate, percent wall reduction and frequency of equipment failure. Reports are given of the use of the following devices on flowing wells: injection valves, sidedoor chokes, tapered tubing, and special equipment. Consideration is given also to the minimizing of corrosion in gas lift wells and in pumping wells. Accounts of the use of plastic coated and special alloy tubing are given. Other topics discussed include the use of liquid inhibitors, weighted inhibitors, stick inhibitors, pellet form inhibitors, inhibitor choke, and special techniques.