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SPE36492  壓裂液濾失實驗評價方法（英文）
Abstract
Laboratory testing of Iluid leakoff enables optimum recommendations for fracturing fluid composition in addition to accum{e predictions of relationships between leakoff rates and formation and fracturing-fluid properties.Static fluid-loss mcasurcmcnts,the present standardized testing method,provide inadequate rcsul[s for comparing fracturing-fluid ma(crlals or for undcrs[finding the complex mechanisms of viscous fluid invasion,fil[cr-citke forrna[ion,and filter-cake erosion.Previous dynamic fluid-loss studies have intidequatcly addressed[hc dcvclopmenl of proper laboratory methods,which has lcd to
erroneous and conflicting results.This paper(Part I in a series) 
discusses the results of a corrsor{ium(1989 to 1994)that was established to help us understand and allow modeling of the fluid-leakoff pmccss in hydraulic-fracturing applications.Part i summarizes over 300 laboratory experiments structured to study the effects of CCI1 design,fluid-preconditioning(both
high-shear and low-shear regimes),and core thickness on fluid leakoff,The results help define appropriate laboratory equipment and tcs[ing procedures for realistic modeling of the filtration process of fracturing fluids.