| Popis: |
In line with the time available to introduce a development plan for several fields in eastern Venezuela with low reliability in the production data, it was decided to evaluate the remaining power of the field by a dynamic modeling using a one-dimensional simulator (Peron, SPE-94723-PP). During the model development, the analysis showed inconsistencies in the gas production data. The methodology of correction is analyzed in this paper. Production -primary and secondary-forecasts were performed and employed to approve the field operation plan. After approving the field development plan under this methodology and due to time constraint while the project was being implemented for sands L, M and N (35% of the remaining reserves of the field) a conventional numeric simulation was performed to increase the reliability of the previous forecasts. The conventional simulation considered the original and the corrected production data from the one-dimensional simulation in order to compare the effects in the historical adjustment. This paper is intended to show a contrastive analysis of the results in both cases. Also, to evaluate the advantages and disadvantages of the one-dimensional simulation methodology defining the parameters that show uncertainty when it comes to analyze a field (size of the aquifer, formation of the secondary gas cap, relevant production mechanism, dispersion level of phases, trend towards channeling and coning). |
