城市地质
城市地質
성시지질
URBAN GEOLOGY
2011年
2期
12-17
,共6页
庞菊梅%王树芳%孙彩霞%高小荣%刘久荣
龐菊梅%王樹芳%孫綵霞%高小榮%劉久榮
방국매%왕수방%손채하%고소영%류구영
地热回灌%示踪试验%热储冷却%模拟预测
地熱迴灌%示蹤試驗%熱儲冷卻%模擬預測
지열회관%시종시험%열저냉각%모의예측
Geothermal reinjection%Tracer test%Cooling of production wells%Modeling and prediction
雄县地热田在2009--2010年地热回灌期间开展了示踪试验。示踪试验过程中没有从生产井和观测井群所取水样中检测到示踪剂,但是基于生产井和回灌井之间流动通道的若干假设,对示踪剂回收的浓度及峰值的出现时间进行了模拟预测,对通道的流体流速进行了估计。并且运用水平裂隙介质模型对由于长期地热采暖尾水回灌可能引起的热储冷却进行了预测,为回灌井和生产井的合理井间距的选择,提供一定的依据。
雄縣地熱田在2009--2010年地熱迴灌期間開展瞭示蹤試驗。示蹤試驗過程中沒有從生產井和觀測井群所取水樣中檢測到示蹤劑,但是基于生產井和迴灌井之間流動通道的若榦假設,對示蹤劑迴收的濃度及峰值的齣現時間進行瞭模擬預測,對通道的流體流速進行瞭估計。併且運用水平裂隙介質模型對由于長期地熱採暖尾水迴灌可能引起的熱儲冷卻進行瞭預測,為迴灌井和生產井的閤理井間距的選擇,提供一定的依據。
웅현지열전재2009--2010년지열회관기간개전료시종시험。시종시험과정중몰유종생산정화관측정군소취수양중검측도시종제,단시기우생산정화회관정지간류동통도적약간가설,대시종제회수적농도급봉치적출현시간진행료모의예측,대통도적류체류속진행료고계。병차운용수평렬극개질모형대유우장기지열채난미수회관가능인기적열저냉각진행료예측,위회관정화생산정적합리정간거적선택,제공일정적의거。
A tracer test was conducted during the reinjection experiment in the Xiongxian geothermal field from 2009 to 2010. No tracer was detected in the water samples collected from production and observation wells during the test. But based on careful assumptions of specific flow channels connecting the injection and production wells, the concentration of tracer recovery, the peak time and the velocity of fluid flow in the flowchannel, the data of the tracer test are simulated. In addition, a horizontal fractured model was used to predict the possible cooling of the geothermal reservoir due to reinjection of tail water of the geothermal heating system, so as to choose the reasonable distance between reinjection and production wells safely.