<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "THERMAL MODELLING OF LONG TERM CIRCULATION OF MULTI-WELL\r\nDEVELOPMENT AT THE COOPER BASIN HOT FRACTURED ROCK (HFR) PROJECT AND\r\nCURRENT PROPOSED SCALE-UP PROGRAM."^^ . "The remote location and extensive HFR resources of\r\nthe Cooper Basin, Australia, require large scale\r\nmulti-well exploitation as the optimal means of\r\ndevelopment. There is estimated more than 1,000\r\nkm2\r\n of granite with a temperature of greater than\r\n250ºC at 4,400m. A combination of overthrust stress\r\nconditions and overpressured fractures has resulted in\r\nextensive stimulations in horizontally oriented\r\nfracture systems during fluid injection (hydraulic\r\nstimulation). Additionally fracture systems stacked\r\non each other have been stimulated independently\r\nwith low connectivity in the vertical plane. This leads\r\nto the possibility of developing stimulated fracture\r\nsystems that extend over many square kilometres,\r\nwith many injection and production wells operating\r\nwithin the fracture systems.\r\nA conceptual model based on the current\r\nunderstanding of the geology and fracture hydraulics\r\nwas implemented using the commercial finite\r\nelement software package FEMLAB® and “in\r\nhouse” Q-con development of the package. In the\r\nmodel injection and production wells were spaced up\r\nto 1,000 m apart in triangular or square grid patterns.\r\nFlow in stimulated fracture zones in the depth range\r\n4,200 m to 5,000 m was simulated for a triangular\r\npattern of 43 wells and a square pattern of 41 wells\r\nwith a total flow of 600 kg/second for the well field\r\nper fracture zone. With a 1,000 m well spacing the\r\nwell field covers 31 km2\r\n for the triangular pattern and\r\n32 km2\r\n for the square pattern. From the model were\r\ncomputed: pressure distribution, flow distribution\r\npumping pressure, temperature decline over time,\r\nthermal power, and temperature distribution in the\r\nrock matrix. The modelling shows that for a 1,000 m\r\nwell spacing the production well temperature decline\r\nwill be approximately 12ºC over 20 years. and 40ºC\r\nover 50 years. The life of a power station would be\r\ngreater than 50 years with this temperature decline.\r\nOn the basis of the model a scale-up program has\r\nbeen developed once the “proof of concept”\r\nHabanero doublet circulation testing has been\r\ncompleted. The initial scale-up will be a 7-well\r\nprogram producing 40 MWe."^^ . "2007-01" . "32" . . "Stanford University, Stanford Geothermal Program"^^ . . "Stanford University, Stanford Geothermal Program"^^ . . . . . . . . . . . . . . . "Robert"^^ . "Vörös"^^ . "Robert Vörös"^^ . . "D."^^ . "Wyborn"^^ . "D. Wyborn"^^ . . "L."^^ . "de Graaf"^^ . "L. de Graaf"^^ . . "R."^^ . "Weidler"^^ . "R. Weidler"^^ . . "Q-con GmbH, Germany"^^ . . . "Q-con GmbH, Germany"^^ . . . "Panax Geothermal Pty Ltd, Australia"^^ . . . "Geodynamics Limited,Australia"^^ . . . . . . "HTML Summary of #1791 \n\nTHERMAL MODELLING OF LONG TERM CIRCULATION OF MULTI-WELL \nDEVELOPMENT AT THE COOPER BASIN HOT FRACTURED ROCK (HFR) PROJECT AND \nCURRENT PROPOSED SCALE-UP PROGRAM.\n\n" . "text/html" . . . "Other-additional study" . . . "Copper Basin" . . . "Geothermal energy production" . .