A Novel Polyacrylamide Film-Forming Agent for Maintaining Wellbore Stability
A polyacrylamide-based film-forming agent was synthesized via free-radical copolymerization. FT-IR spectroscopy confirmed complete monomer conversion with no detectable residual unsaturation. Systematic variation of acrylamide (AM), vinyl acetate (VAc) and cellulose content revealed that an AM mass fraction of 3.7 wt%, a VAc:AM molar ratio of 1:3 and a cellulose content of 1.6 wt% yielded an emulsion of maximal colloidal stability. Under these conditions, the agent formed coherent, moisture-resistant films that effectively encapsulated sodium-bentonite pellets, indicating its potential as an efficient inhibitor for maintaining well-bore stability during drilling operations.
Authors
- Chao Hao (ORCID: https://orcid.org/0000-0001-6700-9446)
- Guoqiang Xu (ORCID: https://orcid.org/0000-0002-4753-4769)
- Wenjing Wei (ORCID: https://orcid.org/0000-0003-2403-8276)
- Guoyan Ma (ORCID: https://orcid.org/0000-0003-1496-0427)
- Yaru Zhang (ORCID: https://orcid.org/0009-0009-9180-5894)
- Ying Yang (ORCID: https://orcid.org/0000-0003-4517-3741)
Institutions
- Xi'an Shiyou University (CN)
Publication Details
- Journal
- Molecules
- Published
- 2025-09-25
- DOI
- https://doi.org/10.3390/molecules30193877
- Primary Topic
- Drilling and Well Engineering
- Type
- article
- Field-Weighted Citation Impact
- 0.00