Application of"skeleton"grafting in fine dispersed phase filter pressing of waste drilling fluid
In this paper,by analyzing the popular filter pressing process of solid-liquid separation of drilling fluid,the problems of low efficiency,high cost and high water content of separated filter cake in the drilling site are highlighted.Through experiments,the method of grafting"skeleton"particles with field cuttings was explored to form a"skeleton"layer barrier on the filter cloth,so as to realize rapid filter pressing of drilling fluid waste liquid with fine dispersed phase.The water content of filter cake is low and the filtrate is qualified,which greatly reduces the dosage of gel breaker and realizes the conditional reuse of filter liquor without increasing the total filter pressing capacity.
Fine dispersed phasefilter-pressnot fall to the groundSkeleton grafting
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