改性碳纳米管增韧树脂覆膜砂支撑剂的制备与性能研究

发布时间：2018-04-27 10:10

本文选题：碳纳米管 + 双马来酰亚胺　；参考：《西安理工大学》2017年硕士论文

【摘要】：本文在国内外树脂覆膜砂支撑剂研究的基础上,综合考虑树脂覆膜砂支撑剂的密度、强度、耐湿热性以及耐腐蚀性等影响因素,结合树脂覆膜砂支撑剂应用中存在的技术问题,在国内外关于树脂共混改性以及纳米材料改性树脂体系研究的启发下,针对石英砂及普通覆膜砂石油压裂支撑剂在中、高闭合压力的地层中使用时普遍存在承压低、长期导流能力不稳定等问题,我们以偶联剂改性石英砂为型芯,以表面接枝聚合物的碳纳米管(CNT)改性的环氧/双马共混树脂为涂覆层,通过优化成球工艺,开发出一种综合性能优异的新型树脂覆膜砂支撑剂。具体分为四个步骤完成:1)对石英砂进行表面改性以提高其与覆膜层的连接强度;2)通过CNT增韧二元树脂体系提高树脂覆膜层的强度;3)通过化学键连接石英砂表面与树脂覆膜层以提升覆膜砂强度;4)优化覆膜成型工艺以期获得球度较好、表面光滑的覆膜砂支撑剂。通过以上步骤获得一种新型树脂覆膜砂支撑剂,其具有以下优点:1)抗压强度高,在69 MPa的闭合压力下破碎率大幅降低;2)较好的长期导流能力;3)较高的球度和光滑度;4)酸溶解度较低;5)较强的疏水性能;6)成本较低。将价格低廉的石英砂支撑剂的应用范围从浅层扩大到深层、致密层油气井,极大的降低了油井深层开发的成本,提高产油效率,具有重要的科学意义和经济价值。
[Abstract]:On the basis of the research on the supporting agent for resin coated sand at home and abroad, the influence factors such as density, strength, moisture resistance and corrosion resistance of resin coated sand support are considered, and the technical problems existing in the application of resin coated sand support are combined, and the research on the modification of resin and the modified resin system of nanomaterials at home and abroad In the light of the oil fracturing proppant in quartz sand and ordinary coated sand in the middle and high closed pressure formation, there are many problems, such as low bearing pressure and unstable long-term conductivity. We use the coupling agent modified quartz sand as the core, and the epoxy / double horse blend resin modified by the surface grafting polymer of carbon nanometers (CNT) as the coating. Layer, through the optimization of the ball forming process, a new resin coated sand support agent with excellent comprehensive properties is developed. It is divided into four steps: 1) surface modification of quartz sand to improve the bonding strength with the coating layer; 2) toughening two yuan resin system through CNT to improve the strength of the tree fat covering layer; 3) connection of quartz sand through chemical bonds. Surface and resin coated layer to improve the strength of film coated sand; 4) optimize the coating molding process to obtain better sphericity and smooth surface of film sand supporting agent. Through the above steps, a new resin coated sand support agent has been obtained. It has the following advantages: 1) high compressive strength, a significant reduction in the crushing rate under the closed pressure of 69 MPa; 2) better length. Time diversion capacity; 3) higher sphericity and smoothness; 4) low acid solubility; 5) strong hydrophobicity; 6) low cost. The application range of quartz sand support agent is extended from shallow layer to deep layer, compact layer oil and gas well, which greatly reduces the cost of deep opening in oil well and improves oil production efficiency. It has important scientific significance and classics. Economic value.

【学位授予单位】：西安理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357.12

【参考文献】