2016年第45卷第9期
石油化工
PETROCHEMICAL TECHNOLOGY
- 1087
DOl: 10.3969/j.issn.1000-8144.2016.09.011
无土相油基钻并液用增黏提切剂的合成及性能
李晓岚，孙举，郑志军，杨朝光，郭鹏
(中国石化中原石油工程有限公司钻井工程技术研究院，河南濮阳457001）
【摘要】采用乳液聚合法制备出适用于无土相油基钻井液的增黏提切剂，考察了单体配比、单体加量、引发剂加量、交联剂加量、乳化剂加量，反应温度及反应时间对产物增黏提切性能的影响；采用FTIR、纳米激光粒度分析仪及金相电子显微镜对该增薪提切剂的结构和粒径进行了表征，并对其在柴油及无土相油基钻井液体系中的性能进行了评价。优化出最佳合成条件为：单体配比（甲基丙烯酸十六酯）：n（苯乙烯）=5：5，单体加量（w）为30%~35%，引发剂过硫酸钾加量（w）为0.7%~0.9%，交联剂二乙烯基苯加量（w）为0.6%~0.8%，反应湿度80~85°℃，反应时间6~7h，乳化剂配比m（十二烷基苯磺酸销）：m(OP-10)-1：1.5，乳化剂加量（w)为5%～6%。表征结果显示，该增黏提切剂平均粒径在96nm左有。实验结果表明。当其加量为紫油的 3%（w）以上时，基蒙动塑比在0.5以上，在80～160℃内变化不大，150℃下连续老化72h性能稳定：在149℃，55.5MPa下，该
增黏提切剂在紫油中的动塑比为0.470。在无土相油基钻井液体系中的动塑比为0.200，其有更好的悬浮稳定性能。【关键词】无土相油基钻井液；增黏剂；提切剂：油分散聚合物
[文章编号］ 10008144(2016)09108707
中图分类号］TQ316
【文献标志码］A
Synthesis and properties of a tackifying and shear strength-improving agent for
clay-free oil-based drilling fluids
LiXiaolan，Sun Ju，Zheng Zhijun，Yang Chaoguang，Guo Peng
(Drilling Engineering Technology Institute, SINOPEC Zhongyuan Petroleum Engineering Co., Ld., Puyang Henan 457001, China)[ Abstract ] A tackifying and shear strength-improving agent which could be used in clay-free oil-based drilling fluids was synthesized through emulsion polymerization. The effects of monomer ratio, monomer dosage, crosslinking agent dosage, initiator dosage, emulsifier dosage reaction temperature and time on the performances of the product were investigated. Its structure and particle size were characterized by FTIR, nano particle size analyzer and metallographic electron microscope, and its performances diesel oil and clay-free oil-based drilling fluid were evaluated separately. The optimized synthesis conditions were n(hexadecyl methacrylate) : n(styrene) of 5 : 5, monomer dosage of 30%(w)35%(w), initiator potassium persulfate dosage of 0.7%(w)-0.9%(w), crosslinking agent divinyl benzene dosage of 0.6%(w)0.8%(w), temperature of 8085 , time of 67 h, and composite emulsifier dosage of 5%(w)6%(w) with m(sodium dodecyl benzene sulfonate) : m(OP-10) of 1 : 1.5. The characterization results showed that the average particle size of the tackifying and shear strength-improving agent was about 96 nm. The experimental results indicated that, when the addition of the tackifying and shear strength-improving agent was more than 3% of diesel oil, the ratio of the yield point to the plastic viscosity was above 0.5 and changed little in the temperature range of 80160 C ; its properties remained stable after continuous aging at 150 °C for 72 h. Under the conditions of 149 °C and 55.5 MPa, the ratios of the yield points to the plastic viscosities in diesel oil and clay-free oil-based drilling fluid were 0.470 and 0.200, respectively, with good suspension stability[Keywords J clay-free oil-based drilling fluid; tackifier; shear strength-improving agent; oil-dispersed polymer
【收稿日期】2016-03-25：【修改稿日期】201606-24。
[作者简介】李晓岚（1980—），女，河南省鹿色甚人，博土，高级工程斯，电话0393-4899548，电邮lily_cocc@163.com。【基金项目】中国石化集团公司科技攻关项目（JP14014）。