油页岩原位开采区注浆封闭浆液优化及其防渗效果实验  

Experiment on the Optimization of Grouting Sealing Slurry and Its Anti-Seepage Effect in Oil Shale In-Situ Production Area

作　　者：陈晨[1,2] 张颖 朱江[3] 朱颖 翟梁皓 沈国军 潘栋彬 Chen Chen;Zhang Ying;Zhu Jiang;Zhu Ying;Zhai Lianghao;Shen Guojun;Pan Dongbin(Callege of Coustruction Engineering.Jilia Unicuersity,Changchun 130026.China;Key Laborutory of Drilling and Erploitarion Techuvology in Compler Condlitions.Ministry of Natural Resources,Changchus 130026.China;CCCC Firs Harbar Cousultauts Co.,Ltd,Tianjin 300222,China)

机构地区：[1]吉林大学建设工程学院,长春130026 [2]自然资源部复杂条件钻采技术重点实验室,长春130026 [3]中交第一航务工程勘察设计院有限公司,天津300222

出　　处：《吉林大学学报（地球科学版）》2021年第3期815-824,共10页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(41672361,41876218);吉林省科技厅项目(SXGJSF2017-5)。

摘　　要：为提高油页岩原位转化加热效率、减少油气污染,采用注浆技术对油页岩开采区进行封闭止水。基于扶余油页岩开采区地质条件,对优化封闭浆液配方与封闭效果进行实验研究。首先基于正交试验,获得了不同指标下的优化配方,进而通过综合分析法,选出符合此封闭区要求的优化配方;为了验证优化浆液的封闭效果,对比分析了浆液充填前后油页岩试样渗透率的变化。结果表明:浆液优化配方为水灰质量比0.85,w(钠基膨润土)4.0%、w(微硅粉)6.0%、w(聚羧酸减水剂)0.5%;当围压为扶余油页岩开采区地应力时,充填浆液试样的渗透率均约为0.1×10-3μm2,远低于未充填的试样,优化浆液封堵试样裂缝效果较好。To improve the transformation efficiency of oil shale in-situ exploration and reduce the pollution of pyrolysis products, a method of sealing production areas, namely grouting technology, is introduced. Taking the geological conditions of Fuyu oil shale as an example, the optimum formulation of grout and its sealing effect in oil shale production area are determined. Based on the orthogonal test, the viscosity of grout is set as the main evaluation index, and the optimized formula of grout is water cement ratio of 0.85, sodium bentonite of 4.0%, silica powder of 6.0%, and poly-carboxylic acid super-plasticizer of 0.5%. In order to verify the sealing effect of the optimized grout, the permeability changes of the oil shale samples filled or not filled with the grout were compared and analyzed. When the confining pressure is equal to the in-situ stress of Fuyu oil shale, the permeability of all filling grouts samples is all about 0.1×10-3 μm2, which is much lower than that of the samples without the grout, indicating that the optimized grout can seal the fractures successfully.

关 键 词：油页岩 注浆 正交试验 配方优化 封闭止水 

分 类 号：TQ172.44[化学工程—水泥工业] X705[化学工程—硅酸盐工业]