جستجوی مقالات مرتبط با کلیدواژه "تزریق گاز" در نشریات گروه "اقتصاد"

Large natural gas reserves are a great potential economic advantage for Iran's economy. As long as the consumption and production of the natural gas increase in the country, gas industry will play a vital role in meeting oil industry's needs. This paper aims to investigate optimal usage of the Iranian natural gas reserves among different applications and also opportunity cost of allocations by developing the gas industry over a long time horizon. Using welfare function, nonlinear dynamic model is applied to solve the problem of gas allocation among alternatives such as domestic consumption, gas injection, gas exports or gas salvaging using the data over the period 2006-2031. The constraints include gas production, requirements of gas injection, domestic growth, gas consumption and other effective variables and parameters related to the natural gas reserves allocation. Findings confirm that priorities and the values of optimal allocation gas depend on the constraints of natural gas production, energy policy, target of injection for preservation or increasing the pressure of oil reservoirs and gas imports. Furthermore, low discount rate gas injection has an absolute priority to gas exports. In the baseline scenario, if domestic gas consumption continuously growth at its average rate of last 11 years performance, it wont be possible to allocate gas injection according to the preservation pressure of oil reservoirs scenario and gas exports. The results of optimal gas salvage and its shadow price shows that the lack of gas production ability has a very high opportunity cost at the beginning years.

Gas injection is assumed as one of the main methods of improving oil recovery in Iranian oil fields. So it's necessary that considerable portion of natural gas produced to be injected into oil reservoirs within next years. gas allocation to various applications will create different opportunity costs. Specifying net benefit function, different opportunity costs are determined in comparison of gas injection during 2006-2031. The results of this study show that the "increasing pressure" scenario of oil reservoirs is prior to the scenario of gas injection to keep the present pressure of oil reservoirs (continuity of current and anticipated situation of gas injection). Discount rate is a major role in selecting the priorities of gas resource allocation in Iran. At low discount rate, gas injection has prior to gas export while at high discount rate gas injection loses its absolute preference to gas export. Absences of compressive energy policy and steady growth of energy consumption specifically in end-user sections would cause the negative gas balance. In this condition gas injection to oil fields would not possible appropriate the oil field necessity for keeping pressure and gas export reveals high opportunity cost.