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A MECHANISMIC STUDY OF POLYALCOHOLS JLX IN WATER BASE DRILLING FLUID

Yue Qian

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Abstract

The adsorption on clay particles, the interfacial activity, and the fluorescence of polyalcohols JLX are studied to acquire some understanding of their functioning mechanisms in water base drilling fluid(shale inhibition and borehole stabilzation, lubrication, and reservoir formation protection). The adsorption of JLX(nonionic copolymers of low molecular weight) on clayparticles is notably influenced by varying temperature. At temperaturescloud point(31℃) the adsorption increases with temperature and phase separation occurs in solution and leads to formation of protective adsorbed bydrophobic JLX film on the clay particles. JLX introduced into a drilling fluid can reduce the interfacial tension between the drilling fluid filtrate and oil and thus helps in reservoir formation protection. The fluorescence grade and toxicity of JLX are low.

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What this paper is about

The adsorption on clay particles, the interfacial activity, and the fluorescence of polyalcohols JLX are studied to acquire some understanding of their functioning mechanisms in water base drilling fluid(shale inhibition and borehole stabilzation, lubrication, and reservoir formation protection). The adsorption of JLX(nonionic copolymers of low molecular weight) on clayparticles is notably influenced by varying temperature. At temperaturescloud point(31℃) the adsorption increases with temperature and phase separation occurs in solution and leads to formation of protective adsorbed bydrophobic JLX film on the clay particles. JLX introduced into a drilling fluid can reduce the interfacial tension between the drilling fluid filtrate and oil and thus helps in reservoir formation protection. The fluorescence grade and toxicity of JLX are low.

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Available abstract

The adsorption on clay particles, the interfacial activity, and the fluorescence of polyalcohols JLX are studied to acquire some understanding of their functioning mechanisms in water base drilling fluid(shale inhibition and borehole stabilzation, lubrication, and reservoir formation protection). The adsorption of JLX(nonionic copolymers of low molecular weight) on clayparticles is notably influenced by varying temperature. At temperaturescloud point(31℃) the adsorption increases with temperature and phase separation occurs in solution and leads to formation of protective adsorbed bydrophobic JLX film on the clay particles. JLX introduced into a drilling fluid can reduce the interfacial tension between the drilling fluid filtrate and oil and thus helps in reservoir formation protection. The fluorescence grade and toxicity of JLX are low.

Key concepts: Drilling fluid, Chemistry, Adsorption, Surface tension, Oil shale, Chemical engineering, Drilling, Borehole

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A MECHANISMIC STUDY OF POLYALCOHOLS JLX IN WATER BASE DRILLING FLUID — Research Paper | ScholarLens