Abstract
This case history discusses the corrosion inhibition program for an Alabama gas condensate field for the period of 1975 – 1993. Inhibitor evaluation and selection techniques are discussed and evaluated with respect to changes in field operating conditions. The severe corrosive environment experienced in this field required an extensive and rather complex laboratory corrosion inhibitor screening program to determine the most efficient and cost effective corrosion inhibition program. Texaco Exploration & Production Technology Department's [EPTD] use of autoclave equipment to evaluate film persistency and later continuous treatment performance of corrosion inhibitors under flowing [dynamic], high temperature and high pressure conditions was one of the crucial factors in the development of a successful corrosion inhibition program. The results of the dynamic continuous treatment high temperature-high pressure autoclave tests were especially valuable in accomplishing our goal. Considering the extremely corrosive nature of the field, an extension in tubing life from 2 years to 8 years is regarded as a success. The success of this corrosion inhibition program is directively attributable to the cooperation, joint efforts and team-work between personnel in field production operations and central technical support functions.
