Investigation of Asphaltene Precipitation due to Gas Injection: Experimental and modeling
Publish place: 07th International Congress on Chemical Engineering
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC07_604
تاریخ نمایه سازی: 25 فروردین 1394
Abstract:
Asphaltene precipitation during natural depletion and miscible gas injection is a common problem in oilfields throughout the world. In this work, static precipitation tests are conducted to investigate effect of pressure, temperature and gas type and concentration on asphaltene instability. Three different oil samples are studied under reservoir conditions with/without nitrogen and methane injection. Besides applying common thermodynamic models, a new scaling equation is presented to predict asphaltene precipitation under HPHT gas injection. Published data from literature are also used in model development. The scaling approach is attractive because it is simple and complex asphaltene properties are not involved in the calculations. Moreover, the proposed model provides universal parameters for different fluid samples in a wide range of pressure and temperature that makes it novel for evaluation of future gas injection projects when simple PVT data are available.
Authors
Siyamak Moradi
Islamic Azad University – Mahshahr Branch
Gholam Abbas Roshanaei Zadeh
National Iranian South Oil Company (NISOC)
Ahmad Mohammadi
National Iranian South Oil Company (NISOC)
Seyed Mehdi Dabiri
National Iranian South Oil Company (NISOC)
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