钻井液与完井液2017，Vol.34Issue(3)：11-15,5.DOI:10.3969/j.issn.1001-5620.2017.03.002
抗高温无固相钻井液技术
High Temperature Solid-free Drilling Fluid Technology
摘要
Abstract
A solid-free drilling fluid having stable properties at 220 ℃ has been developed with high temperature additives such as XCC (viscosifier),AADC (filter loss reducer) and FSCC (plugging agent).The detailed composition of the drilling fluid is:2％XCC+1％ AA DC+3％SPNH+1％SMP+3％FSCC+0.5％Na2SO3.SEM experiment showed that shale cores taken from a well drilled with this drilling fluid had layered micro-fractures apparently plugged,and a dense tree-like polymer layer parallel to the direction of the micro-fractures was found on the surface of the shale cores.FT-IR experimental results showed that,after aging at 220 ℃,the drilling fluid still had stable mud properties,good rheology and filtration properties.The inhibitive capacity and lubricity of the drilling fluid can satisfy the needs of drilling operation.This drilling fluid was able to tolerate the contamination from 10％ clay and 5％ drilled cuttings,or from 10％KCl+20％NaC1 salt solution.The LC50 of the drilling fluid measured was 80,000 mg/L,conforming to the stipulated discharge criteria.The drilling fluid has been successfully used to drill the Well 24 located in the Sebei-1 gas field.关键词
抗高温/无固相/钻井液/XCC/AADC/SPNH/SMP/FSCC/流变性Key words
High temperature resistant/Solids-free/Drilling fluid/XCC/AADC/SPNH/SMP/FSCC/Rheology分类
能源科技引用本文复制引用
李建军,王中义..抗高温无固相钻井液技术[J].钻井液与完井液,2017,34(3):11-15,5.基金项目
大庆油田公司项目“大庆油田抗高温抗盐钻井液技术研究与应用”. （）
