摘要
华北地区地热资源丰富,新发现的蓟县系高于庄组热储层开发利用潜力更大.然而,高于庄组存在裂缝非均质性强、储层产能低等问题.选取华北平原典型高于庄组地热井,进行了酸化压裂和加砂压裂两种改造技术的实验研究和现场增储改造,分析了改造不同阶段的压力监测曲线,进行了改造效果的评估,并初步提出了储层评价-改造设计-效果评价综合技术方法.结果显示,雄安新区高于庄组热储酸化压裂改造后涌水量由4.72 m^(3)/h增加到44.10 m^(3)/h,单位涌水量由0.024 m^(3)/h·m增加到0.745 m^(3)/h·m;沧县隆起高于庄组热储加砂压裂使得单位涌水量由3.009 m^(3)/h·m翻倍式增加至6.158 m^(3)/h·m,单位涌水量增加1倍多,增产改造效果显著.
North China area is rich in geothermal resources.The newly discovered Gaoyuzhuang geothermal reservoir in the Jixian System has even greater potential for development and utilization.However,there are issues such as high fracture in homogeneity and low productivity in Gaoyuzhuang Formation.Two typical geothermal wells in the Gaoyuzhuang Formation of the North China plain were selected for experimental study and in-situ application of two reconstruction techniques,acid and sand fracturing.The efficiency is evaluated by analyzing the pressure curves at different stages.An integrated technical approach to geothermal reservoir evaluation-plan design-effect evaluation is presented.The water output increased from 4.72 m^(3)/h to 44.10 m^(3)/h after acid fracturing of the Gaoyuzhuang geothermal reservoir in Xiong’an New Area,and the unit water surge increased from 0.024 m^(3)/h·m to 0.745 m^(3)/h·m.The sand fracturing of the Gaoyuzhuang reservoir in the Cangxian uplift has doubled the unit gushing water from 3.009 m^(3)/h·m to 6.158 m^(3)/h·m.Both methods show significant productivity gains.
作者
王贵玲
岳高凡
蔺文静
马峰
刘彦广
Wang Guiling;Yue Gaofan;Lin Wenjing;Ma Feng;Liu Yanguang(Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang 050061,China;Technology Innovation Center of Geothermal and Hot Dry Rock Exploration and Development,Ministry of Natural Resources,Shijiazhuang 050061,China)
出处
《地球科学》
EI
CAS
CSCD
北大核心
2024年第4期1470-1486,共17页
Earth Science
基金
中国地质科学院项目(No.SK202306).
关键词
碳酸盐岩热储
增产改造技术
酸化压裂
加砂压裂
华北平原
水文地质学
carbonate geothermal reservoir
reservoir enhancement technology
acid fracturing
sand fracturing
hydrothermal in North China plain
hydrogeology
作者简介
王贵玲(1964-),男,研究员,博士,主要从事地热地质研究.ORCID:0000-0002-2916-7360.E-mail:ihegwangguiling@sina.com;通讯作者:岳高凡(1989-),男,副研究员,博士,主要从事地热地质、多场耦合研究.E-mail:gaofan3904@163.com。
