Mass transfer and gelation in sandstone cores of a novel water shut off chemical

H. J. Castelijns, L. Pel, H. P. Huinink, P. L.J. Zitha

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

1 Citaat (Scopus)

Samenvatting

An innovative water shut-off chemicals was recently proposed. The chemical is soluble in oil without any chemical reaction and forms gel in the presence of water. When the chemical dissolved in oil is injected in the near well-bore formation it modifies selectively the two-phase flow properties in order to reduce the production of water. The gelation process involves the partitioning of the chemical from the oil phase into the water phase. Upon contact with water a heterogeneous (hydrolysis and condensation) reaction takes place between gelant and water, leading to the formation of a gel in the water phase. Recently we have demonstrated that NMR imaging is a viable technique for visualizing and quantifying the above reactive mass transfer process in bulk and glass bead systems. 1,2 Here we report a new core-flood experimental study consisting of the placement of the chemical dissolved in oil in Bentheim sandstone cores. NMR imaging and (T 1 and T 2) relaxation time measurements are used to monitor the reactive transport of the chemical in the core. The mass transfer of the chemical from the oil phase to the water phase is derived from the measurement of T 1 related to the oil phase. The progress of hydrolysis and gelation is indicated by a decrease in T 2 of the water phase.

Originele taal-2Engels
TitelProceedings of the SPE/DOE Symposium on Improved Oil Recovery, 22-26 April 2006, Tulsa, Oklahoma, USA
Pagina's501-507
Aantal pagina's7
DOI's
StatusGepubliceerd - 11 jul 2006
Evenement15th SPE-DOE Improved Oil Recovery Symposium (IOR 2006) - Tulsa, Verenigde Staten van Amerika
Duur: 22 apr 200626 apr 2006
Congresnummer: 15

Congres

Congres15th SPE-DOE Improved Oil Recovery Symposium (IOR 2006)
Verkorte titelIOR 2006
LandVerenigde Staten van Amerika
StadTulsa
Periode22/04/0626/04/06
Ander2006 SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA, 22-26 April 2006

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