| Abstrakt: |
Within the oil and gas industry there are a number of key factors which are important in carrying out a review of any reservoir which include ensuring that running expenses and down time are kept to a minimum, the process of ensuring maximum yield from a well, the development of the oil field and starting from the reservoir and finishing at the well-bore assuring the consistency of the flow over the complete production system so the production predictions for the complete operation are the final necessary piece of information. For the purposes of this research exercise a specific field was selected which was not opened fully until 2007 but was drilled in the 2000s and the objective is to identify how the gas lift process might be used to improve the production capacity of the initial wells within the field. In other words, the overall capacity of the field in terms of production capability into the future under a variety of different operation procedures is the main focus of this research exercise so that a proper evaluation can be carried out. In order to do this, it was necessary to gauge the best production rate within the design parameters and to develop the optimum gas lift using the PROSPER software program and the best parameters to achieve this analysis were the comparisons between the estimated and the actual observed pressures. Using these comparisons, it was obvious that the Beggs-Brill and Petroleum Expert2 methodology was the best and it was used in the gas lift design and from this the following parameters were optimised; the most efficient rates for gas injection, oil production, amount and depth of valves and the necessary pressure for opening and closing valves. Furthermore, the detail in terms of ratios of gas to oil and how water-cut affects this were analysed as well as reservoir pressure the range of gas lift techniques. It has been observed from the simulation that the gas lift method is more economically beneficial as long as the well continues to produce when the reservoir pressure 5300 psi and water cut 60% if the gas lift process has been applied. The results of gas lift design shown that the maximum oil production rate is (1260) STB/Day with optimum gas injection rate of (3) MM Scf/Day. [ABSTRACT FROM AUTHOR] |
