| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaluation method for a geothermal fluid circulation system capable of correctly acquiring the behavior of geothermal fluid at a low cost. SOLUTION: This method evaluates a geothermal fluid circulation system provided with a production well 1 for producing the geothermal fluid as a product fluid A1, and returning wells 5, 6 and 7 for returning returned fluids A4, A6 and A7 into the ground. By analyzing using a Lumped Parameter Model supposing that the product fluid A1 is produced from a reservoir 2 in the ground through the production well 1, and at least a part of the returned fluids A4, A6 and A7 returned into the ground through the returning wells 5, 6 and 7 are returned to the reservoir 2, the geothermal fluid mass in the reservoir 2 capable of providing a calculation value close to an measured value is found in relation to a predetermined chemical component amount in the product fluid A1 and the returned fluids A4, A6 and A7, and the production well 1 is evaluated based on it.
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