关键词: 地热开发, 地下流体动态, 聊古1井

Abstract: In this paper,hydrogeological condition of Liaogu-1 well was introduced; the present condition of extraction of geothermal resources around Liaocheng seism-hydrochemistry station was researched comprehensively. The effect of the extraction of geothermal resources on underground fluid observation and behaviors were analyzed basing on the research. It is believed that the extraction of geothermal resources in the well area resulted in the dry-up of Liaogu-1 well and the emergence of abnormal behaviors in various measurements. The extraction of karst water in carbonate rock around Liaogu-1 well affected the underground fluid observation and behaviors,the disturbance became more serious especially in winter when groundwater was mined for heating. In this paper,for the sake of removing or reducing the effect,the artificial self-flow was carried out by transformation of wellhead equipment. As a result,obvervation items were insured,obvervation condition of part of items was improved,the dynamic data of many obvervation items was continuable,only few items were affected seriously,and actual effect was obtained. But the essential way out is to protect the observation system and stop extraction of geothermal resources in same stratum.

Key words: extraction of geothermal resources, underground fluid behavior, Liaogu-1 well