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Prediction of subsidence over oil and gas fields with use of influence functions (case study: South Pars gas field, Iran) | ||
| Iranian Journal of Science | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 19 اسفند 1394 | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2016.3621 | ||
| نویسندگان | ||
| Mohammad Hossein Taherynia* 1؛ Seyed Mahmoud Fatemi Aghda2؛ Akbar Ghazifard3؛ Eslam Moradi4 | ||
| 1PhD candidate in engineering geology at Kharazmi University | ||
| 2Department of Geology, Faculty of Sciences, Kharazmi University | ||
| 3Department of Geology, Faculty of Sciences, University of Isfahan, Isfahan, Iran | ||
| 4Kharazmi University, Faculty of Mathematical Sciences & Computer, Tehran, Iran | ||
| چکیده | ||
| Withdrawal of oil and gas from reservoirs causes a decrease in pore pressure and an increase in effective stress which cause reservoir compaction. Reservoir compaction will result in surface subsidence through the elastic response of the subsurface. In order to determine the subsidence above a hydrocarbon field, the reservoir compaction must first be calculated and then the effect of this compaction on the surface be modeled. The use of the uniaxial compaction theory is more prevalent and accepted method for determining the amount of reservoir compaction. Surface deformations above compacting reservoirs can be efficiently modeled using influence functions. In this paper used Knothe and Geertsma influence functions in a simple approach for subsidence modeling of the South Pars gas field. In this approach we used circular network, called as influence network, for determining the whole reservoir compaction effect on the field surface. Also semi-analytical modeling of subsidence with use of the AEsubs software is presented for comparing the results of modeling using the influence functions. | ||
| کلیدواژهها | ||
| Subsidence؛ Influence function؛ Reservoir compaction؛ South Pars gas field | ||
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