Numerical modelling on dynamic adsorption of viscoelastic polymer in near wellbore conditions by population balance method

Byungin I. Choi, Moon Sik Jeong, Kun Sang Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Significant injectivity loss during polymer injection measured particularly in the near wellbore has been reported. This challengeable issue is identified as bridging polymer adsorption caused by the bridging of pore throats via macromolecular polymers previously stretched under elongational flow conditions occurring in the vicinity of the injection well. There has been no attempt to describe this phenomenon by numerical simulation model because the conventional Langmuir isotherm widely used in reservoir simulation is not able to contain this bridging-adsorption observed in complicated polymer flooding experiments. This study focuses on the development of numerical model for the bridging adsorption by implementing population balance theory and performs extensive simulation verifications with small core-scale reservoir rock. To reflect distinct flow condition to induce bridging adsorption, the rate of bridging adsorption is established by considering the relationship of expanded polymer under shear force and narrow pore size. To verify the feasibility of new model, simulation results are compared with experiment output reported in previous studies. The simulation results indicate that a considerable amount of bridged polymer can be generated in the low permeability cells only if the polymer solution is exposed to high shear velocity related with shear rate. This is in accordance with a number of previous experimental reports. In addition, the mechanism to induce permeability reduction is totally different from that of conventional Langmuir's isotherm which is widely incorporated in commercial simulators. With buildup of bridging-polymer, the adsorption model can enable the application of numerical simulation targeted at chemical EOR process to be wider.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015
PublisherSociety of Petroleum Engineers
Pages201-221
Number of pages21
ISBN (Electronic)9781510813434
StatePublished - 2015 Jan 1
EventSPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015 - Kuala Lumpur, Malaysia
Duration: 2015 Aug 112015 Aug 13

Other

OtherSPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015
CountryMalaysia
CityKuala Lumpur
Period15/08/1115/08/13

Fingerprint

Polymers
polymer
adsorption
Adsorption
modeling
simulation
Isotherms
isotherm
permeability
Computer simulation
Polymer solutions
method
Shear deformation
reservoir rock
Pore size
Numerical models
chemical process
simulator
Simulators
Experiments

Cite this

Choi, B. I., Jeong, M. S., & Lee, K. S. (2015). Numerical modelling on dynamic adsorption of viscoelastic polymer in near wellbore conditions by population balance method. In Society of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015 (pp. 201-221). Society of Petroleum Engineers.
Choi, Byungin I. ; Jeong, Moon Sik ; Lee, Kun Sang. / Numerical modelling on dynamic adsorption of viscoelastic polymer in near wellbore conditions by population balance method. Society of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015. Society of Petroleum Engineers, 2015. pp. 201-221
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abstract = "Significant injectivity loss during polymer injection measured particularly in the near wellbore has been reported. This challengeable issue is identified as bridging polymer adsorption caused by the bridging of pore throats via macromolecular polymers previously stretched under elongational flow conditions occurring in the vicinity of the injection well. There has been no attempt to describe this phenomenon by numerical simulation model because the conventional Langmuir isotherm widely used in reservoir simulation is not able to contain this bridging-adsorption observed in complicated polymer flooding experiments. This study focuses on the development of numerical model for the bridging adsorption by implementing population balance theory and performs extensive simulation verifications with small core-scale reservoir rock. To reflect distinct flow condition to induce bridging adsorption, the rate of bridging adsorption is established by considering the relationship of expanded polymer under shear force and narrow pore size. To verify the feasibility of new model, simulation results are compared with experiment output reported in previous studies. The simulation results indicate that a considerable amount of bridged polymer can be generated in the low permeability cells only if the polymer solution is exposed to high shear velocity related with shear rate. This is in accordance with a number of previous experimental reports. In addition, the mechanism to induce permeability reduction is totally different from that of conventional Langmuir's isotherm which is widely incorporated in commercial simulators. With buildup of bridging-polymer, the adsorption model can enable the application of numerical simulation targeted at chemical EOR process to be wider.",
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Choi, BI, Jeong, MS & Lee, KS 2015, Numerical modelling on dynamic adsorption of viscoelastic polymer in near wellbore conditions by population balance method. in Society of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015. Society of Petroleum Engineers, pp. 201-221, SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015, Kuala Lumpur, Malaysia, 15/08/11.

Numerical modelling on dynamic adsorption of viscoelastic polymer in near wellbore conditions by population balance method. / Choi, Byungin I.; Jeong, Moon Sik; Lee, Kun Sang.

Society of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015. Society of Petroleum Engineers, 2015. p. 201-221.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Choi BI, Jeong MS, Lee KS. Numerical modelling on dynamic adsorption of viscoelastic polymer in near wellbore conditions by population balance method. In Society of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015. Society of Petroleum Engineers. 2015. p. 201-221