Read download reservoir formation damage pdf pdf download. Therefore, deposition of asphaltene can cause significant formation damage and diminish the productivity in petroleum reservoirs during oil production 1,2,3,4,5. Asphaltene deposition an overview sciencedirect topics. This model is applied using experimental data from laboratory core flow tests. Laboratory investigation of asphalteneinduced formation damage. Mechanism 1, however, seems to be the dominant one. For field scale simulation of asphaltene deposition and its effect on oil productivity, wang and civan 2005a,b,c wang and civan 2005a wang and civan 2005b wang and civan 2005c incorporated their. Asphaltene deposition is more likely to be a problem during co2 eor if this were a problem encountered during primary production at a. Formation damage, such as surface deposition, pore plugging, porosity and permeability changes, and wettability alteration, by asphaltene deposition affects multiphase fluid mobility. Keywords formation damage asphaltenes precipitation onset pressure reservoir oil permeability reduction. In addition to formation damage, asphaltene deposition in the tubing and pipelines reduces the available diameter of the pipe to flow that decreases the oil production capacities soulgani et al.
Parametric studies indicate that while the rate of formation degradation depends on rock and fluid properties, ultimate severity of impairment is primarily controlled by insitu asphaltene content. Several studies have documented the possibility of asphaltene precipitation during lean gas and co 2 injection. School of engineering mechanisms of asphaltene core. The proposed model has been used to explain the general observation that light oil systems are more vulnerable to asphaltene damage, than the heavy. Formation damage by co2 asphaltene precipitation onepetro.
Formation damage from paraffins and asphaltenes petrowiki. Modeling formation damage due to asphaltene deposition in. The purpose of this study is to evaluate the degree of formation damage caused by asphaltene deposition in the pore throats in case of oilfield operation. Asphaltene nearwellbore formation damage modeling onepetro. Formation damage during improved oil recovery, 2018. Asphaltene precipitation and deposition during primary oil recovery and resulting reservoir formation damage are described by a phenomenological mathematical model. Effects of asphaltene depositionderived formation damage.
Modeling formation damage by asphaltene deposition during. Pdf formation damage due to asphaltene precipitation during co. Nanoconfinement increases oil production and asphaltene precipitation deposition in tight formations. Investigation of asphaltenederived formation damage and nano. Deposited asphaltene contributes permeability reduction. Pdf asphaltene nearwellbore formation damage modeling.
Formation damage by organic deposition sciencedirect. Large changes in temperature can also induce asphaltene deposition. Laboratory investigation of asphalteneinduced formation. The new asphaltene nearwell formation damage model is applied in one case where it is used to track the degree of formation damage as a function of time and the effect it has on nearwellbore. Formation damage free download as powerpoint presentation.