Alkyl Polyglucoside is a new kind of non-ionic surfactant which is made from carbohydrate and a natural fatty alcohol.
Because the surfactant made from starch contains glucose units in the molecular structure. This type of surfactant in addition to the excellent performance of traditional surfactant. Also have many unique properties, such as alkyl indican low surface tension. excellent compatibility with other treatment agents, under the condition of high concentrations of the electrolyte is still has a high solubility.
Therefore, the development and utilization of cheap natural raw material starch derivatives have attracted more and more attention. Alkyl polyglucoside is first used in drilling fluid in foreign, but domestic research is in its infancy stage.
Alkyl polyglucoside has good solubility with oil and water. Drilling fluid system containing a certain amount of glycosidic ingredients, not only can improve the liquidity of drilling fluid and enhance its inhibitory of mud shale, but also can realize the protection of reservoir and reduce the reservoir of water lock effect.
Alkyl Polyglucoside drilling fluid system has a good capability of a solid phase and high-temperature stability, and the ability to resist temperature can reach more than 150° C.
The most important is that the alkyl polyglucoside is nontoxic and biodegradable, which is also very attractive for offshore drilling.
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