Highly stabilized foam by adding amphiphilic Janus particles for drilling a high-temperature and high-calcium geothermal well
File(s)Manuscript-Janus particles-2019 0128 .pdf (1014.78 KB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Fabricating Janus particles that consist of two distinct functional regions is an intriguing research topic. In this study, wax colloidosomes were successfully prepared by the Pickering emulsion method. After hydrophilic modification with an amino-containing silane agent and separate hydrophobic modification with several silane coupling agents with different carbon chain lengths, a series of Janus particles that differed in their hydrophilic lipophilic balance were facilely fabricated. The results show that the (3-aminopropyl)triethoxysilane-SiO2-dodecyltrimethoxysilane (NH2-SiO2-12C) Janus particles possess the best foam stability. As a result of their suitable contact angle of 80°, high positive ζ-potential, and good surface activity, these foams display the characteristics of low surface tension, high dilational elasticity, nonspherical shapes, large sizes, and thick films, which together result in the extension of the drainage half-life of the foam from 448 to 778 s in comparison with the foam of pure foaming agent solutions. Moreover, compared with a foam with no stabilizer or those stabilized by a soluble foam stabilizer and homogeneous hydrophobic-modified silica particles, NH2-SiO2-12C-stabilized foam can extend the drainage half-life to 668 s after hot rolling for 16 h at 280 °C and resist a CaCl2 concentration of 0.8 wt %. Benefiting from their excellent thermal stability and salt tolerance, these Janus particles are expected to be promising candidates for use as foam stabilizers in high-temperature and high-calcium conditions, including drilling, enhanced oil recovery, “waterless” fracturing, and, especially, in geothermal wells.
Date Issued
2019-06-12
Online Publication Date
2020-08-05T10:40:47Z
Date Acceptance
2019-05-21
ISSN
0888-5885
Publisher
American Chemical Society
Start Page
9795
End Page
9805
Journal / Book Title
Industrial and Engineering Chemistry Research
Volume
58
Issue
23
Copyright Statement
© 2019 American Chemical Society.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000471835000005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Engineering, Chemical
Engineering
COLLOIDAL PARTICLES
BUBBLES
Science & Technology
Technology
Engineering, Chemical
Engineering
COLLOIDAL PARTICLES
BUBBLES
03 Chemical Sciences
09 Engineering
Chemical Engineering
Publication Status
Published
Date Publish Online
2019-05-22