地质调查与研究Issue(2)：149-154,6.
滨海新区西部馆陶组回灌井填砾成井工艺的应用分析
Application of Gravel-packed Completion Technology of Guantao Geothermal Reinjection Well in the Western Binhai New Area
摘要
Abstract
In order to solve the clogging problems of reinjection well in Neogene geothermal reservoir, the drill-ing technology of gravel-packed completion technology outside the casing in large diameter well is taken in 25# reinjection well according to geothermal reservoir conditions in the Binhai New Area. For reducing flow resis-tance of the thermal reservoir and improving recharge amount, the well flushing for broken the mud wall before casing installed and direct well flushing outside the casing before gravel-packed method was adopted, which can damage the mud wall and clean out the viscous mud that have got into reservoir, so that the filter is formed a good artificial filter layer. And the dynamic water filling gravel was taken into the drilling of 25#, based on the ex-periences before, which can avoid gravel expansion and bridging phenomenon to ensure the gravel-packed in place. The reinjection and production tests have carried out separately. It indicates that the maximum recharge amount is 66 m3/h and the stable water level is 71.37 m. The test achieves a good reinjection effect. The operation of the system is running steady. This is a good verification that gravel-packed completion technology could make geothermal reinjection in sandstone reservoir easier.关键词
地热/馆陶组回灌井/填砾成井工艺/破壁洗井/回灌试验/滨海新区Key words
geothermal/Guantao formation reinjection well/gravel-packed completion technology/well flush-ing/reinjection test/Binhai new area分类
地球科学引用本文复制引用
江国胜,王光辉,赵娜,黄贤龙,沈健..滨海新区西部馆陶组回灌井填砾成井工艺的应用分析[J].地质调查与研究,2014,(2):149-154,6.基金项目
天津市滨海新区馆陶组热储回灌技术集成及示范研究 （）
