当前位置: X-MOL 学术Energy Fuels › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Thermothickening Drilling Fluids Containing Bentonite and Dual-Functionalized Cellulose Nanocrystals
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-06-26 , DOI: 10.1021/acs.energyfuels.0c01192
Mei-Chun Li 1, 2 , Qinglin Wu 1 , Tingzhou Lei 3 , Changtong Mei 2 , Xinwu Xu 2 , Sunyoung Lee 4 , Jaegyoung Gwon 4
Affiliation  

The approaching era of sustainable development and rapid increase in global energy demand necessitates the development of high-performance drilling fluids with low toxicity, sustainability, and in-situ rheology controllability for complicated formation excavation. Herein, smart water-based drilling fluids (WDFs) with thermocontrollable rheological properties are developed using bentonite (BT) and dual-functionalized cellulose nanocrystals (fCNCs). The fCNCs are synthesized by surface grafting of poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) and poly(N-isopropylacrylamide) (PNIPAM) through free-radical graft polymerization. The presence of PAMPS grafts with abundant amide and negatively charged sulfonate groups not only enables fCNCs to attach on the surface of BT platelets creating BT/fCNC clusters but also ensures the created BT/fCNC clusters to uniformly disperse through electrostatic repulsion. On the other hand, the introduction of thermoresponsive PNIPAM grafts induces the association of BT/fCNC clusters at elevated temperatures through enhanced hydrophobic attraction, resulting in promising thermothickening rheological performance of BT/fCNC-WDFs. Furthermore, the thermothickening rheological behavior can be maintained even after 10 heating/cooling cycles, albeit with a slight increase in the critical transition temperature. The developed BT/fCNC-WDFs with sustainability, in-situ rheology controllability, and good cyclability have great potential in the smart drilling industry, making the exploration and production of oil and gas more safe, efficient, and environmentally friendly.

中文翻译:

含有膨润土和双功能纤维素纳米晶体的热增稠钻井液

可持续发展和全球能源需求快速增长的时代即将来临,因此需要开发具有低毒性,可持续性和现场流变可控性的高性能钻井液,用于复杂的地层开挖。在本文中,使用膨润土(BT)和双功能化纤维素纳米晶体(fCNC)开发了具有可控流变性的智能水基钻井液(WDF)。fCNC是通过聚(2-丙烯酰胺基-2-甲基-1-丙烷磺酸)(PAMPS)和聚(N-异丙基丙烯酰胺)(PNIPAM)通过自由基接枝聚合。具有丰富酰胺和带负电荷磺酸盐基团的PAMPS接枝物的存在,不仅使fCNC附着在BT血小板表面上,从而形成BT / fCNC簇,而且确保了所创建的BT / fCNC簇通过静电排斥而均匀分散。另一方面,引入热响应性PNIPAM接枝可通过增强的疏水吸引作用在高温下诱导BT / fCNC团簇缔合,从而使BT / fCNC-WDF具有良好的热增稠流变性能。此外,即使临界转变温度略有增加,即使经过10个加热/冷却循环,仍可以保持增稠流变行为。具有可持续性的已开发BT / fCNC-WDF,原位流变可控性和良好的可循环性在智能钻井行业具有巨大的潜力,这使得油气的勘探和生产更加安全,高效和环境友好。
更新日期:2020-07-16
down
wechat
bug