摘要
提出将问荆提取物作为页岩水化膨胀抑制剂,通过室内实验研究了其抑制页岩水化膨胀的性能,与氯化钾和聚胺进行了对比,并分析了其防膨机理。膨润土水化抑制实验、膨润土沉淀实验、动态线性膨胀实验、滚动回收实验和吸附量测定实验结果表明:问荆提取物可以抑制膨润土的水化,阻止黏土矿物在溶液中均匀分散,减小膨润土的膨胀,抑制钻屑在水中破碎和分散,且与氯化钾和聚胺性能相当。对问荆提取物的防膨机理进行分析后发现:其成分中具有活性烃基的物质与膨润土颗粒表面间氢键缔合,降低了膨润土颗粒表面的吸水率,从而抑制膨润土膨胀。除了具有良好的防膨能力,问荆提取物获取容易、价格低廉,且不会破坏生态环境,是一种理想的页岩水化膨胀抑制剂。
The Horsetail extract was used as shale stabilizer, its inhibition performance was stuided by laboratory experiments and compared with potassium chloride and polyamine, and its anti-swelling mechanism was analyzed. Bentonite inhibition test, sodium bentonite sedimentation test, dynamic linear swelling test, and hot rolling cutting dispersion test were employed. The results show that： the bentonite is not capable of being hydrated or dispersed in solution with the Horsetail extract; the Horsetail extract can resuce the swelling of the bentonite and prevent disintegration and dispersion of cuttings in aqueous medium; the extract is well comparable and competitive with potassium chloride and polyamine in inhibition performance. The constituents of the Horsetail extract have active hydroxyls which are capable of forming hydrogen bounding with surfaces of bentonite particles, leading to decrease of the water absorption on bentonite particles＇ surfaces which results in bentonite swelling reduction. Besides having good anti-swelling ability, Horsetail extract is ecofriendly, readily available and inexpensive.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2016年第3期476-481,共6页
Petroleum Exploration and Development
关键词
问荆提取物
水基钻井液
页岩水化膨胀
膨胀抑制剂
防膨机理
Horsetail extract
water-based drilling fluid
shale hydrated swelling
shale stabilizer
anti-swelling mechanism
