Compatibility Study of Condensate and Heavy Oil for Storage in an Iranian Reservoir
- 14 September 2021
- journal article
- research article
- Published by Society of Petroleum Engineers (SPE) in SPE Production & Operations
- Vol. 36 (04), 873-885
- https://doi.org/10.2118/206731-pa
Abstract
During the years 2017–2020, when Iran faced restrictions on the sale of oil and gas condensate and due to the need for domestic consumption and gas sales commitments, it was inevitable to produce gas at full capacity. This coercion has led to significant production of gas condensates. Some of these condensates were sold, some were converted into products such as gasoline in domestic refineries, and some of these condensates needed to be stored, but the storage capacity was limited. For the purpose of underground condensate storage, a heavy oil reservoir was selected based on some technical and operational criteria. A feasibility study was conducted to evaluate the potential risks of condensate injection into the reservoir. The results of tests on asphaltene precipitation, as the most important risk, indicated no severe precipitation would occur even if high concentration of condensate mixed with the reservoir heavy oil. The recovery of condensate and the production performance of the reservoir were simulated in three different injection-production scenarios. The results showed a positive effect of condensate injection on production rate of the reservoir. Moreover, satisfactory volume of condensate could be recovered in a reasonable period of time.Keywords
This publication has 16 references indexed in Scilit:
- Assessing containment properties of underground oil storage caverns: methods and a case studyGeosciences Journal, 2017
- Design and operation problems related to water curtain system for underground water-sealed oil storage cavernsJournal of Rock Mechanics and Geotechnical Engineering, 2016
- Geotechnical monitoring on the stability of a pilot underground crude-oil storage facility during the construction phase in ChinaMeasurement, 2016
- Stability analysis of underground oil storage caverns by an integrated numerical and microseismic monitoring approachTunnelling and Underground Space Technology, 2016
- Experience and challenge of underground oil/gas storage caverns in KoreaGeosystem Engineering, 2014
- A review of technologies for transporting heavy crude oil and bitumen via pipelinesJournal of Petroleum Exploration and Production Technology, 2013
- Asphaltene precipitation due to natural depletion of reservoir: Determination using a SARA fraction based intelligent modelFluid Phase Equilibria, 2013
- A novel method for evaluation of asphaltene precipitation titration dataChemical Engineering Science, 2012
- Rock engineering in underground energy storage in KoreaTunnelling and Underground Space Technology, 2003
- Test Methods for Determining Asphaltene Stability in Crude OilsPetroleum Science and Technology, 2003