| Abstract |
The Mutnovsky geothermal field modeling study (TOUGH2) previously made by the author (Kiryukhin, 1992, 1996, 2002) has shown that total steam production of the wells existing in 1991 will yield not less than 44 MWe. In October 2002 Mutnovsky 50 MWe PP was put into operation in Dachny site. The problem of steam supply to Mutnovsky 50 MWe PP (Dachny) trigged the new reservoir model demand. Due to above, the old model (1992, 1996, 2002) has been revised and the new one based on ìwell-by-wellî generated mesh (A-Mesh grid generator) strongly related to the particular wells and production zones has been used (the so-called Main production zone in Dachny site strikes north-north- east and dip east-east-south at the angle 60 Ó (Kiryukhin et al.,1998)). The following data are used for the new model calibration: (1) flowtests from wells ? 4, 016, 26, 029W and 24 (the data of 1999- 2002), (2) additional wells ¿ 1 ñ ¿ 4 drilling data, (3) pressure monitoring data (well 012) and (4) exploitation wells ? 4, 016, 26, 029W, A2, E5 (2002- 2003 year) output data. Modeling results show that total steam production of the wells (? 4, 016, 26, 029W, E5) will decline from 60-70 kg/s to 30 kg/s during the period of 10 year exploitation due to overload of the north part of the Main production zone. Modeling of additional exploitation load in the south-eastern part of the Dachny site to maintain 50 MWe PP is on-going.. |