石油与天然气化工2025，Vol.54Issue(5)：26-32,49,8.DOI:10.3969/j.issn.1007-3426.2025.05.003
深层页岩气井用新型抗高温自愈合可降解堵漏剂的研制与表征
Development and characterization of a new high-temperature resistant,self-healing and degradable plugging agent for deep shale gas wells
摘要
Abstract
Objective To address the shortcomings faced by conventional plugging materials in the plugging process of deep shale gas well.Method A new type of plugging agent with self-healing and degradable functions was prepared by crosslinking epoxy resin,succinic anhydride,acetylacetone zinc hydrate,and polyethylene glycol(PEG)using a high-temperature curing method.Result The plugging agent could withstand temperatures up to 180℃,and the mass loss rate after hot rolling at 180℃,16 h was less than 1.6%.Under the condition of 180℃,the stress relaxation time could be adjusted within 2 000-6 000 s.After doping with 25 wt%PEG,the plugging agent could achieve 100%complete healing effect within 25 min.Under a high-temperature alkaline environment,it could degrade rapidly.When the NaOH dosage was 1.5 wt%,the plugging agent could be completely degraded within 1 h.The pressure bearing capacity of plugging 5 mm×4 mm cracks at 180℃could reach 10.0 MPa.Conclusion The newly developed glass-like polymer plugging agent has good high-temperature resistance,temperature-sensitivity self-healing,and self-degradation properties,which can effectively solve the leakage problem of deep shale gas wells and meet their efficient exploration and development needs.关键词
堵漏剂/自愈合/自降解/抗高温/深层页岩气Key words
plugging agent/self-healing/self-degradation/high-temperature resistance/deep shale gas引用本文复制引用
李佳,郭建新,熊颖,张亚东,蒲俊余,唐洪..深层页岩气井用新型抗高温自愈合可降解堵漏剂的研制与表征[J].石油与天然气化工,2025,54(5):26-32,49,8.基金项目
中国石油西南油气田公司自由探索项目"高承压液体段塞关键材料及机理研究"(2025D204) （2025D204）
