钻井液与完井液2026，Vol.43Issue(2)：172-178,7.DOI:10.12358/j.issn.1001-5620.2026.02.004
弹性膨胀型桥堵增效材料的研究及其应用
Research and Application of Elastic Expanding Bridging Efficiency-Enhancing Material
摘要
Abstract
Current bridging lost circulation materials(LCMs)exhibit poor lost circulation control performance and limited pressure bearing capacity when used in controlling mud losses into complex fractured formations such as those with multiscale fractures and stress-sensitive fractures,and mud losses controlled with these LCMs are easy to re-occur.Based on the idea of enhancing the elasticity and toughness as well as the volumetric expandability of the LCMs,an elastic expanding bridging efficiency-enhancing material was developed.The optimal synthesis formula and conditions were obtained through component optimization experiments.Laboratory evaluations were conducted on the material mechanics,expansion performance and lost circulation control capacity of the elastic expanding bridging efficiency-enhancing material,followed by field application.The research findings show that the elastic expanding bridging efficiency-enhancing material exhibits high compressive strength and good elasticity-toughness before and after expansion.After aging at 160℃,the volume of the elastic expanding bridging efficiency-enhancing material can expand to 116.67%of its original volume.Through elastic-tough deformation and continuous three-dimensional expansion,the elastic expanding bridging efficiency-enhancing material can enhance the compactness of the plugging layers and improve their elasticity-toughness,thereby strengthening the pressure-bearing and anti-breathing capacity of the seal.Preliminary field applications of this elastic expanding bridging efficiency-enhancing material in wells with lost circulation in the southwest drilling block have achieved favorable results in mud loss control,demonstrating broad promotion prospects.关键词
裂缝性漏失/弹性膨胀/桥堵增效/动态裂缝Key words
Lost circulation into fractured formation/Elastic expansion/Bridging efficiency-enhancing/Dynamic fracture分类
能源科技引用本文复制引用
崔凯潇,刘金华,李大奇..弹性膨胀型桥堵增效材料的研究及其应用[J].钻井液与完井液,2026,43(2):172-178,7.基金项目
国家自然科学基金企业创新发展联合基金集成项目"三大盆地深层—超深层海相油气高效勘探开发基础研究"(U24B6001). （U24B6001）
