山东国土资源
山東國土資源
산동국토자원
LAND AND RESOURCES IN SHANGDONG PROVINCE
2013年
9期
23-30
,共8页
地热资源%砂岩热储%热储压力%回灌试验%鲁北平原
地熱資源%砂巖熱儲%熱儲壓力%迴灌試驗%魯北平原
지열자원%사암열저%열저압력%회관시험%로북평원
Geothermal resource%sandstone reservoir%reservoir pressure%reinjection experiment%Lubei plain
山东省鲁北平原蕴藏有丰富的地热资源，目前得到广泛开发利用的热储为新近纪馆陶组热储与古近纪东营组热储，热储类型为沉积盆地型碎屑岩孔隙-裂隙热储，天然状态下，该类热储中的地热流体基本上处于静止状态，补给极其微弱，地热流体的大量开采造成了热储压力的急剧下降，回灌成为了维持热储压力的必要措施。针对该类热储，国内外进行了大量的回灌试验研究，总体回灌效果不佳，并将原因归结于回灌时热储的堵塞。该文在分析研究区内多次回灌试验成果的基础上，提出了砂岩热储回灌的不同机理，认为合理地布置开采井与回灌井之间的距离，促使开采井与回灌井之间形成水力循环，是解决砂岩热储中回灌难问题的关键。
山東省魯北平原蘊藏有豐富的地熱資源，目前得到廣汎開髮利用的熱儲為新近紀館陶組熱儲與古近紀東營組熱儲，熱儲類型為沉積盆地型碎屑巖孔隙-裂隙熱儲，天然狀態下，該類熱儲中的地熱流體基本上處于靜止狀態，補給極其微弱，地熱流體的大量開採造成瞭熱儲壓力的急劇下降，迴灌成為瞭維持熱儲壓力的必要措施。針對該類熱儲，國內外進行瞭大量的迴灌試驗研究，總體迴灌效果不佳，併將原因歸結于迴灌時熱儲的堵塞。該文在分析研究區內多次迴灌試驗成果的基礎上，提齣瞭砂巖熱儲迴灌的不同機理，認為閤理地佈置開採井與迴灌井之間的距離，促使開採井與迴灌井之間形成水力循環，是解決砂巖熱儲中迴灌難問題的關鍵。
산동성로북평원온장유봉부적지열자원，목전득도엄범개발이용적열저위신근기관도조열저여고근기동영조열저，열저류형위침적분지형쇄설암공극-렬극열저，천연상태하，해류열저중적지열류체기본상처우정지상태，보급겁기미약，지열류체적대량개채조성료열저압력적급극하강，회관성위료유지열저압력적필요조시。침대해류열저，국내외진행료대량적회관시험연구，총체회관효과불가，병장원인귀결우회관시열저적도새。해문재분석연구구내다차회관시험성과적기출상，제출료사암열저회관적불동궤리，인위합리지포치개채정여회관정지간적거리，촉사개채정여회관정지간형성수력순배，시해결사암열저중회관난문제적관건。
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 .
