Researches and Application of Modified Humic Acid Additives for Water Base Drilling Fluids
Oilfield Chemistry（2008）
Abstract
This review covers the following topics: chemical structure and properties of humic acid(HA);chemical modification of HA through sulfonation and graft reactions;researches and uses of modified HA products as water base drilling fluid additives including filtrate reducers,viscosity reducers and anti-caving agents,with their high temperature stabilizing functions mentioned,in particular.
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Key words
modified humic acid additives,water base drilling fluids
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