期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：227
期号：4
页码：042020
DOI：10.1088/1755-1315/227/4/042020
出版社：IOP Publishing
摘要：Borehole instability problem is always common when intersecting the brittle shale formations using either water-based mud or oil-based mud. An extensive wellbore stability drilling fluid was carried out mainly focused on integrating a variety of anti-collapse technology and the rigorous environmental protection. In this paper, a set of the environmental friendly drilling fluid system of strong inhibition was designed and developed based on the multi-element concept of inhibition, plugging, flocculating and environmental protection, combined with the characteristics and brittle shale and the special environmental requirements. In this system, KCOOH and SIAT are taken as the inhibitors, PAC-LV as the fluid loss agent, KPAM as the flocculant and nano-barite as the weighting and plugging material to improve the quality of mud cake and reduce the solid content of the system.
