Or. Admin. R. 632-020-0155

Current through Register Vol. 63, No. 6, June 1, 2024

Section 632-020-0155 - Application to Inject

(1) The provisions of this rule apply to applications for geothermal wells intended for the injection of geothermal fluids, and are in addition to the requirements of ORS 522.019.

(2) An application for a permit to inject geothermal fluid into any underground reservoir must include, but is not limited to, the following:

(a) A plan of injection explaining the proposed system including facilities other than the injection well necessary to conduct the operations;

(b) A map of adequate scale (preferably 1:24,000, but not less than 1:62,500 or 1" = 1 mile) to show all existing and proposed wells, pipelines, and other surface facilities. All wells must be distinguished by type;

(c) The injection fluid characteristics such as quality, quantity, source, chemical analysis, chemical reactivity, toxicity, temperature, and any additives such as but not limited to pH control, anti-scaling, or biocides;

(d) The characteristics of the proposed injection zone including: volume capacity of the zone, geologic formation and structure, porosity, permeability, chemical analysis of zonal water, static formation pressures and temperatures, anticipated zonal fluid reactivity to the injected fluids, any previous history of injection operations into the same or similar formations, any injectivity tests which may have been conducted, and other pertinent data;

(e) Description of the hydrology of the surrounding area, including groundwater quality, quantities, and analyses, and the predicted effects of the injected fluids on the existing surface and groundwater;

(f) Subsurface maps and cross sections of the producing and injecting zone structure and lithology and any available logs or histories of a well or other wells penetrating the injection zone that have not been previously submitted.

(g) Description of the effects of injection on such factors as potable water, seismicity, and local tectonic conditions;

(h) Representative injection well drilling program;

(i) Proposed downhole and surface injection equipment and metering facilities with capacity, design capabilities, and design safety factors in sufficient detail to enable adequate environmental analysis. Construction and engineering design plans should be included; and

(j) Proposed injectivity surveys, seismic surveys, seismic monitoring, and other means to monitor injection.

Or. Admin. R. 632-020-0155

GMI 4, f. 7-20-72, ef. 8-1-72; GMI 4-1980, f. & ef. 10-2-80; GMI 2-1995, f. & cert. ef. 3-10-95; DGMI 1-2010, f. & cert. ef. 6-22-10; DGMI 3-2013, f. & cert. ef. 3-21-13

Stat. Auth.: ORS 522

Stats. Implemented: ORS 522.019 & 522.305