煤矿安全2024，Vol.55Issue(8)：8-15,8.DOI:10.13347/j.cnki.mkaq.20222118
水力压裂钻孔抗高压封孔材料研发及带压封堵特征研究
Research and development of anti-high pressure sealing material and sealing characteristics in hydraulic fracturing borehole
摘要
Abstract
In order to solve the problem of hydraulic fracturing presure relief and permeability improvement technology applied in underground field due to the substandard sealing and control quality,in this paper,on the basis of summarizing the existing hole seal-ing materials and sealing methods at home and abroad,through a large number of basic experiments,the influence of auxiliary mater-ials such as ordinary cement added with special composite cement,swelling agent and water reducing agent on the basic properties of anti-high pressure sealing materials such as setting time,fluidity,compressive strength and swelling multiplication rate was studied.The best water-cement ratio of 0.5,20%-25%of special composite cement,4%of compound expander and 1.6%of naphthalene wa-ter reducer were determined to ensure the early strength and high strength of the anti-high-pressure sealing material with the premise of flowability and expansion rate.It also conducted on-site industrial experiments in Pinggang Coal Mine of Longmei Coal Group,and its parameters such as solidification time and compressive strength met the performance requirements.关键词
抗高压封孔材料/水力压裂/凝结时间/流动性/抗压强度Key words
anti-high pressure sealing materials/hydraulic fracturing/setting time/fluidity/compressive strength分类
矿业与冶金引用本文复制引用
王蔚鸣,张超..水力压裂钻孔抗高压封孔材料研发及带压封堵特征研究[J].煤矿安全,2024,55(8):8-15,8.基金项目
国家自然科学基金资助项目(51974241) （51974241）
