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Study on organic positive gel drilling and completion fluid system
Author(s): 
Pages: 24-25
Year: Issue:  6
Journal: DRILLING FLUID & COMPLETION FLUID

Keyword:  有机正电胶钻井液钻井液添加剂钻井液性能抑制性防止地层损害;
Abstract: 新开发的有机正电胶(代号为SDPC)与常规无机正电胶相比,具有更强的正电性,能被水润湿,具有油溶性,与其它钻井液处理剂的配伍性好,具有更强的页岩抑制性、稳定井壁和保护油气层能力.以SDPC为主剂,室内实验对有机正电胶加量和膨润土量的配比、高聚物包被剂、降粘剂、降滤失剂、防塌剂进行了优选,对优选出的强抑制性有机正电胶钻井液完井液体系进行了评价.优选出的强抑制性有机正电胶钻井液完井液高温高压滤失量和粘附系数均较小,老化后终切力较高,携岩能力较强,防塌能力突出,油层保护效果理想,完全满足水平井钻井液完井液对井眼净化、井壁稳定、润滑防卡以及油层保护等方面提出的特别要求,可用于定向井、水平井的钻井作业.
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