电导率对钻井液抑制及环保性能影响分析

Impact Analysis of Conductivity on Inhibition of Drilling Fluid and the Environ- mental Performance

摘要: 为确定电导率对钻井液抑制环保性能的影响，通过电泳实验、钻井液滤液矿化度的测定实验、钻井液滤液化学需氧量COD值测定实验，评价了电导率与钻井液抑制性、矿化度、COD的相互关系。结果表明：钻井液电导率的变化可以表征钻井液中黏土颗粒表面ξ电位的变化、钻井液滤液矿化度的变化和钻井液滤液化学需氧量COD值的变化。该研究结果为评价钻井液性能提供了一种简单、快捷、准确的分析手段。

Abstract: To determine the impact of conductivity on drilling fluid properties, the relationship among the conductivity, drilling fluid inhibition, salinity and COD value was evaluated through the electrophoresis experiment, drilling fluid filtrate salinity measurement experiment and the drilling fluid filtrate COD detection experiment. The results show that the change of drilling fluid conductivity can characterize the change of clay particles surface ξ potential of drilling fluid, drilling fluid filtrate salinity and COD value of drilling fluid filtrate.This research conclusion provides a simple, fast and accurate analysis way for drilling fluid properties evaluation.