Water Quality and Well Injectivity

L. Nabzar, J. -P. Coste, G. Chauveteau
1997 IOR 1997 - 9th European Symposium on Improved Oil Recovery   unpublished
Small particles suspended in injection waters may cause more severe permeability damages than larger ones . In addition, the deposition kinetics increases as vetocity decreases so that substantial permeability damages are expected at large Bistances from injection welas where remediation is questionnable . This paper reporis the maan results of lab experiments carried out using very welt-characterized systems . Colloidal particles veere submicron monodispersed hydrophilic latexes and
more » ... ed sharpedged urineral particles . Porous media veere obtained by packing sharp-edged grains of different Bizes, giving a we11-known microstructure . Water injections veere performed at different flow ratel and salinities . The laws of deposition kinetics which governs the depth of forma ion damage veere determined under an adimensional foren, including erefactors, for the case of weck or strong energy barriers between particles and pure surface . Al intermediate salinity, real surfaces behaves as heterogeneous . By extending a formation damage model based on a detailed physics to include surface heterogeneity of gore surface, a very Bood agreement between simulations and experimental results is obtained, giving confidence that the physics included in the model is pertinent. This model is thus a dood tool to obtain in a practical case the parameters needed to predict injectivity damages . 9th European Sym p os i um on fmproved Oil R ecovery, T he H ague -Th e N ethe rl ands, 20 -22 O ctober 199 7 LAHC E N NABZAR' , JEAN -PAUL C05TE z and GUY CHAUVETEAU2 ' CNR S
doi:10.3997/2214-4609.201406785 fatcat:qpmvxbzwgzfdzd5f2pluwly6ei