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Mitigationdamage during drilling
Damage mechanism
Particle invasion
Swelling and dispersion of indigenous
reservoir clays by the mud filtrate
Mutual precipitation of soluble salts inthe filtrate and
formation water
Slumping of unconsolidated sands
Water block
Emulsion block
Remedial measures
Matrix acidization, Perforation,
Hydraulic fracturing
Matrix acidization
Matrix acidization
Sand consolidation techniques, Frac
and Pack
Surfactant treament, Matrix
acidization
Surfactant treament, Matrixacidization
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During cementation
Damage mechanism
Fines migration from the cement
slurry into the formation
Precipitation of solids from the
cement within the formation
Precipitation of expansive secondaryminerals following
reservoir
mineral dissolution
Remedial measures
Matrix acidization, Perforation,
Hydraulic fracturing
Matrix acidization ,Perforation
Matrix acidization
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COMPLITION AND WORK OVER-
MITIGATIONDamage mechanism
Hydration and swelling of clay
minerals
Movement and plugging by clay size
particles in the formation
Plugging by invading materials fromthe wellbore fluids
Emulsion and water blocks due to lost
wellbore fluid
Relative permeability effects
Precipitation of scales
Plugged perforations due to improperperforating conditions
Remedial measures
Matrix acidization, Hydraulic
fracturing, Clay stabilization
Matrix acidization ,Clay stabilization
Matrix acidization
Surfactant treatment, Matrix
acidization
Surfactant treatment
Acidization
Acidization, Perforation
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DURING PRODUCTION
Damage mechanism
Fines migration
Scale deposition
Paraffin, Wax & Asphaltene
formationWettability alteration
Liquid block
Condensate banking
Emulsion generation
Remedial measures
Deep penetrating acid treatment, Clay
stabilization
Acidization
Surfactant treatment, Solvent treatment
Surfactant treatment, Solvent treatment
Surfactant treatment
Hydraulic fracturing
Solvent / Demulsifier treatment
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WATER INJECTION
Damage mechanism
Solid invasion
Fines migration
Clay swelling
Clay deflocculation
Formation dissolution
Skim oil entrainment
Biologically Induced Impairment
Sand influx
Chemical adsorption/ Wettability
alterationsFormation of insoluble scales and
Emulsification
Precipitate formation
Remedial measures
Acidization, Hydraulic fracturing
Acidization ,Clay stabilization treatment
High saline fluid
Surfactant tratment, Clay stabilization
treatmentAcidization, Hydraulic fracturing
Surfactant treatment
Biocide treatment
Sand consolidation treatment
Surfactant treatment
Surfactant treatment, Solvent treatment
Acidization
