摘要
Abstract
There are abundant of geothermal resources buried under LuBei plain in Shandong .The widely developed and utilized geothermal reservoirs are Guantao group and Dongyin group of clastic sedimentary pore fracture type geothermal reservoirs .Under natural conditions ,the geothermal fluid in the reservoir largely dormant ,replenishment is extremely weak .Exploitation of geothermal fluid causing a sharp drop in the reservoir pressure ,in that reinjection has become the necessary measures to maintain reservoir pres-sure .Aimed at this kind of clastic geothermal reservoir ,there are a large number of reinjection experi-ments have been performed ,but the overall reinjection effects are not optimistic .Researchers blamed the failure to reservoir blockage during reinjection .Based on the analysis of past reinjection experiment activi-ties ,the author puts forward three different mechanisms pertinent to reinjection in sandstone geothermal reservoir ,and draws a conclusion that reasonable arrangement of the distance between production well and reinjection well ,prompting hydraulic loop formed between production well and reinjection well is the key to solve the problem hampered reinjection in sandstone geothermal reservoir .关键词
地热资源/砂岩热储/热储压力/回灌试验/鲁北平原Key words
Geothermal resource/sandstone reservoir/reservoir pressure/reinjection experiment/Lubei plain分类
天文与地球科学
