钻井液与完井液2025，Vol.42Issue(6)：738-747,10.DOI:10.12358/j.issn.1001-5620.2025.06.005
抗高温水基钻井液用纳米纤维素降滤失剂
A Nanocellulose Filter Loss Reducer for High Temperature Water Based Drilling Fluids
王灿 1赵雄虎 1贾相如 2Salman Khan1
作者信息
- 1. 油气资源与探测国家重点实验室,北京 102249||中国石油大学(北京)石油工程学院,北京 102249
- 2. 里尔中央理工学院,法国里尔59000
- 折叠
摘要
Abstract
A nanocellulose filter loss reducer CNF-ADDS was developed through aqueous solution graft polymerization.Laboratory experiments were conducted on it to analyze its effects on the rheology and filtration property of drilling fluids,to evaluate its high temperature performance and salt and calcium resistance capacities,and to reveal its filtration reduction mechanism.Experimental results show that the average length of the CNF-ADDS molecules is about 300 nm.Treatment of the base mud of a water-based drilling fluid with 2%CNF-ADDS increases its apparent viscosity to 32 mPa·s and the plastic viscosity to 22 mPa·s.After aging at 260℃,the HTHP filter loss tested at 150℃is only 16.3 mL.After contamination by 36%NaCl and 3%CaCl2 respectively,the CNF-ADDS-treated drilling fluids were then aged at 260℃,the HTHP filter losses of the drilling fluids tested at 150℃were 17.4 mL and 16.5 mL,respectively,and the mud cakes were tough and thin.By self-assembling into a network structure,the CNF-ADDS molecules can be adsorbed onto the surfaces of the clay particles,thereby reducing the filter loss of the drilling fluid in high temperature and high salinity(NaCl and CaCl2)environment.关键词
水基钻井液/降滤失剂/纳米纤维素/接枝共聚/抗高温Key words
Water-based drilling fluid/Filter loss reducer/Nanocellulose/Graft copolymerization/High-temperature resistant分类
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王灿,赵雄虎,贾相如,Salman Khan..抗高温水基钻井液用纳米纤维素降滤失剂[J].钻井液与完井液,2025,42(6):738-747,10.
