增強型地熱系統（EGS）的全球技術發展和經濟分析

Global Technology Development and Economic Analysis of Enhanced Geothermal Systems (EGS)

10.29911/JEHVACE_NEW.202309_(141).0002

呂錫民(Shyi-Min Lu)

增強型地熱系統 ； 傳統熱液系統 ； 創新勘探技術 ； 儲集層模擬技術 ； enhanced geothermal system ； traditional hydrothermal system ； innovative exploration technology ； reservoir simulation technology

冷凍空調&能源科技

141期（2023 / 09 / 10）

30 - 38

繁體中文;英文

本研究的目的在於回顧已在歐盟、日本、韓國、澳大利亞和美國應用的重要增強型地熱系統（EGS）的技術和成本。早期案例的結果表明，場址特徵（例如張裂類型設置）是EGS成功開發的關鍵因素。本研究還介紹了歐洲增強型地熱創新網絡（ENGINE），該網絡側重於開發用於表徵超臨界地熱儲集層的高溫儀器，以及綜合緩解儲集層誘發地震活動的地熱工程（GEISER）。針對EGS技術不成熟的問題，美國從2007年到2013年共投入2.2億美元用於開發EGS商業化的創新勘探、儲集層增產、可持續儲集層技術和經濟分析模型。台灣地熱開發的關鍵問題仍在於克服地熱生產井的低產能障礙。借鑒國外經驗，在傳統熱液田增設回注井提高產能，應該是台灣開發EGS的可行途徑。

The purpose of this study is to review the technologies and costs of important enhanced geothermal systems (EGS) that have been deployed in the European Union, Japan, Korea, Australia, and the United States. Results from earlier cases that have shown site characteristics such as tension-crack type settings are key factors in the successful development of EGS. This study also presents the Enhanced Geothermal Innovative Network for Europe (ENGINE), which focuses on the development of high-temperature instruments for characterizing supercritical geothermal reservoirs, and Geothermal Engineering Integrating Mitigation of Induced SEismicity in Reservoirs (GEISER). Aiming at the problem of immature EGS technology, the United States has invested a total of 220 million US dollars from 2007 to 2013 in the development of innovative exploration, reservoir stimulation, sustainable reservoir technology and economic analysis model of EGS commercialization. The key issue for Taiwan's geothermal development is still to overcome the barrier of low productivity of geothermal production wells. Learning from foreign experience, adding reinjection wells in traditional hydrothermal fields to increase production capacity should be a feasible way for Taiwan to develop EGS.

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