E3S Web Conf.
Volume 338, 20227th International Conference on Environmental Science and Material Application (ESMA 2021)
|Number of page(s)||5|
|Published online||20 January 2022|
Evaluation of temperature resistance of gelatinized modified starch drilling fluid
1 National Engineering Laboratory for Low-Permeability Oil & Gas Field Exploration and Development, Xi’an, Shaanxi, 710018, China
2 Drilling & Production Engineering Technology Institute, CNPC Chuanqing Drilling Engineering Company Ltd., Xi’an, Shaanxi, 710018, China
3 Changqing Drilling Branch, CNPC Chuanqing Drilling Engineering Co., Ltd., Xi’an city, Shaanxi 710000, China
This chapter evaluates and compares the indoor performance of different concentrations of non gelatinized starch and gelatinized starch in drilling fluid, gelatinized modified starch at 80°C, and then aged at high temperature. Taking the plastic viscosity (PV) and filtration loss (FL) as the main evaluation indexes, a formula with better performance was selected as the main additive and used as the follow-up study. At the same time, the inhibition of gelatinized starch in water-based drilling fluid was investigated.
Key words: high temperature / modified starch / drilling fluid
© The Authors, published by EDP Sciences, 2022
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.
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