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A natural dye in water-based drilling fluids: Swelling inhibitive characteristic and side effects

Petroleum 2017年第3期3卷 355-366页

作者： Aghil Moslemizadeh Seyed Reza Shadizadeh Department of Petroleum Engineering Ahwaz Faculty of Petroleum EngineeringPetroleum University of TechnologyP.O.Box 63134AhwazIran Department of Petroleum Engineering Abadan Faculty of Petroleum EngineeringPetroleum University of TechnologyAbadanIran

The development of eco-friendly shale inhibitors is still an area which has attracted a lot of attention in the drilling *** extract is a natural dye which has recently shown considerable inhibition and weak deflocculation properties in clay-water *** study aims to investigate swelling inhibitive feature and side effects of Henna extract in water-based drilling fluids(WBDFs).It was carried out through extensive experiments including adsorption measurements on shale by batch equilibrium,inhibition evaluation by dynamic linear swelling and cuttings dispersion,wettability alteration via contact angle measurements,compatibility by rheological properties determinations and fluid loss measurements,and *** in natural pH and adjusted pH to 9,Linear adsorption model was more suitable for anticipating the adsorption behavior of Henna extract on the given shale *** results of the linear swelling and cuttings dispersion tests demonstrated that Henna extract in drilling fluid formulations diminished the swelling and dispersion characteristics of the addressed shale ***,contact angle measurements showed that Henna extract expanded the hydrophobicity of shale formations,preventing and promoting water adsorption and shale stability *** issue definitely introduces wettability alteration as a mechanism for shale stability by Henna *** determinations additionally uncovered that Henna extract is compatible with common WBDFs *** indicated by the lubricity tests,Henna extract enhanced the lubricity of WBDFs,a finding which can be of an incredible significance in directional *** others,advantages such as environmental friendliness,low cost,accessibility,and the counter corrosion property make the applicability of Henna extract in WBDFs profoundly suitable.

关键词： shale inhibitors Natural dye Water-based drilling fluids(WBDFs) Adsorption Wettability Compatibility Lubricity

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