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Monday, March 15, 2010: 3:05 PM
214 A (Henry B. Gonzales Convention Center)
Abstract:
The predictive assessment of the optimum replacement time due to the corrosion damage accumulation allows the control of associated operating expenditures in oilfield operations. To such purpose a model was developed for the assessment of CO2 corrosion related damage accumulation.
The model proposed is based on the calculation of the CO2 corrosion damage accumulation and failure probability as a sequence of random processes. The distribution of failure likelihood is then assessed in terms of a Markov random process from both an Ergodic, or repair, and an Absorbent, or free damage accumulation, scenarios.
The value of the optimum replacement time estimated by the model proposed was compared with an actual documented case from a mature oilfield development. The modeled results indicate that the mean transition time for failure without mitigation is around 6 years which coincide with the observed behavior from the field. The modeled optimum replacement time interval for this case was estimated as 5 years of service time.
The predictive assessment of the optimum replacement time due to the corrosion damage accumulation allows the control of associated operating expenditures in oilfield operations. To such purpose a model was developed for the assessment of CO2 corrosion related damage accumulation.
The model proposed is based on the calculation of the CO2 corrosion damage accumulation and failure probability as a sequence of random processes. The distribution of failure likelihood is then assessed in terms of a Markov random process from both an Ergodic, or repair, and an Absorbent, or free damage accumulation, scenarios.
The value of the optimum replacement time estimated by the model proposed was compared with an actual documented case from a mature oilfield development. The modeled results indicate that the mean transition time for failure without mitigation is around 6 years which coincide with the observed behavior from the field. The modeled optimum replacement time interval for this case was estimated as 5 years of service time.