NOVELTY - The method involves generating a map of existing wells including multiple sub-commercial wells within field relative to a maximum horizontal stress line (9). Distance between each of sub-commercial well and the maximum horizontal stress line is measured. A determination is made (11) to check whether sub-commercial wells aligned with or located relatively close to the maximum horizontal stress line are stimulatable. Location of a stimulating well is selected (13) for stimulating the stimulatable well separated less than anticipated fracture propagating distance from the stimulatable well.    USE - Method for selecting location of a stimulating well i.e. production well, for inducing or opening fracture in adjoining rock formation in geothermal power plants and petrochemical field.    ADVANTAGE - The method enables drilling a well within field containing a resource at a location which is relatively close to the resource, where the drilled well i.e. stimulating well, is caused to be partially isolated, so that stimulation fluid injected through the well flows through a zone does not isolated to hydraulically produce fracture at desired depth to extend the produced fracture from the stimulating well to a production well, thus enabling additional geothermal fluid to be in fluid communication with the production well so as to increase productivity of the production well. The method enables increasing total power capacity of a power plant by drilling the simulating well through which geothermal fluid is injectable.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for improving productivity of a geothermal field in a hydrothermal resource.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for selecting location of a simulating well.    Step for generating map of existing wells including sub-commercial wells within field relative to maximum horizontal stress line (9)    Step for determining whether sub-commercial wells aligned with or located relatively close to maximum horizontal stress line are stimulatable (11)    Step for selecting location of stimulating well for stimulating stimulatable well separated less than anticipated fracture propagating distance from stimulatable well (13)    Step for drilling stimulating well (15)    Step for injecting stimulation fluid into stimulating well (17)