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(Use Case Vocabulary) geothermal borehole

sgrellet edited this page Oct 25, 2018 · 6 revisions

Summary

Borehole(s?) deployed to exploit geothermal resource (heat or electricity generation). But also geothermal probe deployment to assess subsurface heating storage capacity via Ground Thermal Response Testing (TRT).

Terms

Concept/Feature: Borehole

Definition

"A borehole is the generalized term for any narrow shaft drilled in the ground.". INSPIRE definition (removing ", either vertically, horizontally, or inclined." from the initial GeoSciML one).

Properties/Attributes

identifier

name

geolocalisation: X, Y, SRS

coupled borehole

In case of 'Geothermal doublets'. -> https://github.com/opengeospatial/boreholeie/issues/9

geothermal exploitation type

subtype of borehole use in EPOS conceptual model

Geo-ressource available

Geologic Unit, Hydrogeo Unit, ...

Concept/Feature: Construction

Definition

"Construction components of the geothermal borehole. These are particularly important to manage geothermal exploitation or when assessing results of TRT."

Properties/Attributes

surface installation

out-of-scope ? -> https://github.com/opengeospatial/boreholeie/issues/17

casing (tubage in French)

sealing (coulis in French)

pump

probe

name, type, ...

Concept/Feature: Thermal Response Test (TRT)

Definition

"Thermal Response Test (TRT) is a measurement method to determine heat transfer properties of a borehole heat exchanger and surrounding ground in order to predict the thermal performance of a ground-source energy system." (from http://projects.gtk.fi/Annex21/trt.htm).

how to model it -> https://github.com/opengeospatial/boreholeie/issues/18

Properties/Attributes

TRT method

TRT, Distributed TRT

date, duration

operator

related observations

borehole involved

investigated depth(s)

amount of heat injected

associated measuring devices

in/out flow/heat

geothermal fluid used

Concept/Feature: Thermal Response Test Observations

Definition

"Observations generated by the TRT and associated ones necessary to understand it." ground temperature, probe observed thermal resistivity, mean ground thermal conductivity, rock material specific heat (chaleur spécifique in French -> regionalized abacus of some sort).

Properties/Attributes

observations & measurements properties seem ok :)

Concept/Feature: Geothermal log

Definition

"Log representing geological units heat storage capacity. Based on native geological log + local studies."

Properties/Attributes

observations & measurements properties seem ok :) with a result lithology/from/to/volumic heat capacity

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