钻井液与完井液2026，Vol.43Issue(1)：18-27,10.DOI:10.12358/j.issn.1001-5620.2026.01.003
基于新型动态循环堵漏装置的颗粒-凝胶复合堵漏实验研究
Experimental Study on Lost Circulation Control with Particle-Gel Composite Plugging on a Novel Dynamic Circulating Lost Circulation Device
摘要
Abstract
Experimental devices currently in use for lost circulation control test have such shortages in simulating dynamic circulation and evaluating the performance of lost circulation slurries.To overcome these shortages,a multiparameter dynamic lost circulation control experimental device was developed which integrates heterogeneous tortuous fracture simulation,temperature-pressure coupling control and real-time monitor functions.This device consists of a temperature-pressure controlled reactor(0-150℃)/(0-25 MPa),a work fluid synthesis system,a circulation pump set and a data acquisition and control system.It can be used to reconstruct tortuous fractures with lengths of 50-60 cm,and simulate the alternate migration-plugging process of lost circulation materials under dynamic circulation conditions.Using prefabricated heterogeneous artificial cores and reticulate metal frameworks,experiments were conducted on controlling lost circulation in multiscale fractures and nested frameworks,and the synergistic mechanism of the particle-gel composite system was revealed.Experimental results show that the lost circulation control slurry formulated based on the D90 rule achieves a coordinated improvement of suspension stability and plugging capacity through the"coarse particle bridging-fine particle filling-gel gap plugging"process,with the pressure bearing capacity of the plugging layer being over 12 MPa.The curing of the preinjected gel can significantly shorten the circulation time:the time for plugging a single fracture is shortened to 4 min,a plugging efficiency of at least 45%higher than plugging with single-particle lost circulation slurries,and this time is further reduced to 2.7 min when metal frameworks are used.This study has verified the engineering applicability of time-sequential synergistic process of lost circulation control with composite slurries under dynamic circulation conditions,providing theoretical support for the prevention and control of lost circulation in fractured-vuggy formations.关键词
动态/迂曲裂缝/聚能筑巢堵漏/颗粒-凝胶复合堵漏Key words
Dynamic/Tortuous fractures/Energy-gathered nesting lost circulation control/Lost circulation control with composite particle-gel slurry分类
能源科技引用本文复制引用
胡钊文,张逸群,刘晏俊,王薪宇,杨丽丽,刘亚..基于新型动态循环堵漏装置的颗粒-凝胶复合堵漏实验研究[J].钻井液与完井液,2026,43(1):18-27,10.基金项目
国家自然科学基金优秀青年科学基金项目"油气井流体力学与工程"(52422402). （52422402）
