钻探工程2024，Vol.51Issue(z1)：191-195,5.DOI:10.12143/j.ztgc.2024.S1.028
无固相冲洗液防塌护壁性能强化改进试验研究
Experimental study on strengthening and improving the anti-collapse and wall protection performance of solid-free flushing fluid
摘要
Abstract
In order to improve the wall protection and anti collapse performance of solid-free flushing fluid during geological core drilling,five types of curing agents were selected,including alicyclic curing agent EPR,fatty curing agent DETA,AEP,aromatic curing agent PU,and amide curing agent PET.The use of curing agents can improve the film hardness,adhesion,weather resistance,and increased glossiness of the cured material.Adding curing agents to solid-free flushing fluid can improve the anti collapse performance.Through core immersion tests and linear expansion tests,it was determined that curing agents EPR and PU have a good effect on improving the anti collapse performance of the wall protection.Then,EPR and PU were compounded,and the optimal ratio of EPR∶PU=1∶4 was determined through core soaking test results.Finally,the optimal dosage of curing agent was determined to be 0.2%through linear expansion test and rheological performance test.The dosage of the solid-free flushing fluid is water+0.5%polyacrylamide+0.04%EPR+0.16%PU,which improves the anti-clapse and wall protection performance with little impact on the rheological property of the flushing fluid.关键词
地质岩心钻探/固化剂/岩心浸泡试验/线性膨胀量试验/防塌护壁性能Key words
geological core drilling/curing agent/core immersion tests/linear expansion tests/anti collapse and wall protection performance分类
地质学引用本文复制引用
史铭,杨亚平,张席芝,雒焕祯,谭义军,蒋炳,张统得..无固相冲洗液防塌护壁性能强化改进试验研究[J].钻探工程,2024,51(z1):191-195,5.基金项目
金川集团工程建设有限公司科技项目"金川矿区复杂地层超深孔钻进工艺研究"(编号:KSGCFGSKY202401) （编号:KSGCFGSKY202401）
