E3S Web Conf.
Volume 329, 20214th International Conference on Green Energy and Sustainable Development (GESD 2021)
|Number of page(s)||5|
|Published online||09 December 2021|
Preparation and performance evaluation of polyvinyl alcohol grafted polyacrylic acid for plugging
1 Oil ＆ Gas Technology Research Institute Changqing Oilfield Company, X i’an, Chian
2 National Engineering Laboratory of Tight Oil＆Gas Field Exploration and Development, Xi’an, Chian
3 Nanpu Operating Area, Jidong Oilfield, Tangshan, Hebei, China
4 Changqing Drilling Branch, CNPC Chuanqing Drilling Engineering Company Limited, Xi'an, Chian
5 Xi’an Key Laboratory of Tight oil (Shale oil) Development (Xi'an Shiyou University), Xi’an Shiyou University, Xi’an, 710065, China
* Corresponding author: firstname.lastname@example.org
Well-leakage is a very difficult problem in the process of drilling at home and abroad. At present, it mainly relies on the cumulative effect of plugging slurry to implement plugging regardless of the number of times and costs. Commonly used plugging slurry and plugging technology are difficult to guarantee the success rate and scientific of plugging malignant leakage, which has an extremely bad impact on the development of the petroleum industry. In this study, With polyvinyl alcohol and acrylic acid as main agents, a plugging material of acrylic acid grafted polyvinyl alcohol was prepared, and the influence of the composition of the reaction system on the gel state of the system was studied. Through a series of singlefactor experiments, the best formula for preparing the plugging material was determined, polyvinyl alcohol and acrylic acid (specific gravity 1:3) + crosslinking agent (0.1wt%) + initiator (0.3wt%). The gel plugging agent using above formula to prepare has good gel strength and suitable gel time, and has a good application prospect in solving the problem of lost circulation.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.