复合植物酚改善淀粉类钻井液处理剂的抗温性能  

Improve High Temperature Performance of Drilling Starch with Compound Phytophenol

作　　者：张洁[1] 景云天 朱宝忠 姚皇有 张凡[1,4] 唐德尧 陈刚 ZHANG Jie;JING Yuntian;ZHU Baozhong;YAO Huangyou;ZHANG Fan;TANG Deyao;CHEN Gang(Shaanxi Key Laboratory of Environmental Pollution Control and Reservoir Protection in Oil and Gas Field,Xi’an Petroleum University,Xi’an Shaanxi 710065;Institute of Petroleum Engineering Technology,Jianghan Oilfield Branch,China Petroleum&Chemical Corporation,Qianjiang Hubei 433100;State Key Laboratory of Petroleum Pollution Control,CNPC Research Institute of Safety and Environmental Technology,Beijing,102206;Xinfu Hanhai Petroleum Science and Technology Limited Company,Xi’an Shaanxi 710068)

机构地区：[1]西安石油大学·陕西省油气田环境污染控制技术与储层保护重点实验室,西安710065 [2]中国石油化工股份有限公司江汉油田分公司石油工程技术研究院,湖北潜江433100 [3]长庆油田第十二采油厂,甘肃庆阳710201 [4]中国石油安全环保技术研究院·石油石化污染物控制与处理国家重点实验室,北京102206 [5]陕西鑫富瀚海石油科技有限公司,西安710068

出　　处：《钻井液与完井液》2020年第3期288-293,300,共7页Drilling Fluid & Completion Fluid

基　　金：国家科技重大专项“鄂尔多斯盆地致密油开发示范工程”(2017ZX05069004);陕西省重点研发计划重点产业创新链(群)项目“绿色多功能钻井液材料研究与应用及其钻后废液治沙技术开发”(2019ZDLGY06-03)。

摘　　要：以富含植物“三素”的橘皮粉和土豆淀粉为原料,制备了橘皮粉-淀粉复合物。通过考察添加橘皮粉-淀粉复合物的水基钻井液表观黏度、动切力、降滤失性能和黏附系数,探讨改善淀粉类钻井液处理剂的抗温性能,同时利用粒径分析、红外光谱分析以及热重分析等手段分析了该复合物在钻井液中的作用机制。结果表明,在水基钻井液中添加0.3%橘皮粉(80~120目)和1.0%土豆淀粉,其在150℃下的耐温流变性能、降滤失性能和润滑性能均有明显的改善。其作用机理是橘皮粉中的植物酚能与土豆淀粉中的a多糖形成酚-多糖复合物,有效地抑制了淀粉中多糖分子链主键的高温降解,从而有效改善了淀粉类钻井液处理剂的耐温性能;同时淀粉多糖分子上的环醇羟基、橘皮酚分子上的酚羟基吸附在钻井液中膨润土颗粒的表面,形成水化膜,抑制了膨润土的水化膨胀。A citrus peel power-starch compound was developed with raw materials citrus peel power and potato starch. A drilling fluid treated with the compound was measured for its apparent viscosity, yield point, filtration control property and adhesion coefficient to find a way of improving the high temperature performance of starch drilling fluids. The working mechanisms of the compound in the drilling fluid was analyzed by particle size measurement, infrared spectrum analysis and thermogravimetric analysis. It was found that a water base drilling fluid treated with 0.3% citrus peel powder(80-120 mesh) and 1.0% potato starch had its high temperature stability at 150℃, filtration control performance and lubricity significantly improved. The working mechanisms are that the phytophenol in the citrus peel powder react with the α polysaccharide in the potato starch to form a phenol-polysaccharide compound which effectively inhibits the high temperature degradation of the backbone of the molecular chains of the polysaccharide in the starch, thereby effectively improving the high temperature resistance of starch. Meanwhile, the hydroxyl group of the cyclohydrin in the polysaccharide molecules and the phenolic hydroxyl group of the phytophenol are able to be adsorbed on the surfaces of bentonite particles in the drilling fluid, forming a hydration membrane, hence inhibiting the hydration and swelling of bentonite.

关 键 词：淀粉类钻井液 橘皮酚 表观黏度 土豆淀粉 抗温性能 

分 类 号：TE254.4[石油与天然气工程—油气井工程]