Application of real rock porethroat statistics to a regular pore network model
Abstract
This work reports the application of real rock statistical data to a previously developed regular pore network model in an attempt to produce an accurate simulation tool with low computational overhead. A core plug from the St. Peter Sandstone formation in Indiana was scanned with a high resolution micro CT scanner. The porethroat statistics of the threedimensional reconstructed rock were extracted and the distribution of the porethroat sizes was applied to the regular pore network model. In order to keep the equivalent model regular, only the throat area or the throat radius was varied. Ten realizations of randomly distributed throat sizes were generated to simulate the drainage process and relative permeability was calculated and compared with the experimentally determined values of the original rock sample. The numerical and experimental procedures are explained in detail and the performance of the model in relation to the experimental data is discussed and analyzed. Petrophysical properties such as relative permeability are important in many applied fields such as production of petroleum fluids, enhanced oil recovery, carbon dioxide sequestration, ground water flow, etc. Relative permeability data are used for a wide range of conventional reservoir engineering calculations and in numerical reservoir simulation. Twophase oil watermore »
 Authors:
 Publication Date:
 Research Org.:
 National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). Inhouse Research
 Sponsoring Org.:
 USDOE Office of Fossil Energy (FE)
 OSTI Identifier:
 1062712
 Report Number(s):
 NETLPUB67
 Resource Type:
 Conference
 Resource Relation:
 Conference: SPE145751PP
 Country of Publication:
 United States
 Language:
 English
 Subject:
 42 ENGINEERING
Citation Formats
Sarker, M.R., McIntyre, D., Ferer, M., Siddigui, S., and Bromhal. G. Application of real rock porethroat statistics to a regular pore network model. United States: N. p., 2011.
Web.
Sarker, M.R., McIntyre, D., Ferer, M., Siddigui, S., & Bromhal. G. Application of real rock porethroat statistics to a regular pore network model. United States.
Sarker, M.R., McIntyre, D., Ferer, M., Siddigui, S., and Bromhal. G. 2011.
"Application of real rock porethroat statistics to a regular pore network model". United States.
doi:.
@article{osti_1062712,
title = {Application of real rock porethroat statistics to a regular pore network model},
author = {Sarker, M.R. and McIntyre, D. and Ferer, M. and Siddigui, S. and Bromhal. G.},
abstractNote = {This work reports the application of real rock statistical data to a previously developed regular pore network model in an attempt to produce an accurate simulation tool with low computational overhead. A core plug from the St. Peter Sandstone formation in Indiana was scanned with a high resolution micro CT scanner. The porethroat statistics of the threedimensional reconstructed rock were extracted and the distribution of the porethroat sizes was applied to the regular pore network model. In order to keep the equivalent model regular, only the throat area or the throat radius was varied. Ten realizations of randomly distributed throat sizes were generated to simulate the drainage process and relative permeability was calculated and compared with the experimentally determined values of the original rock sample. The numerical and experimental procedures are explained in detail and the performance of the model in relation to the experimental data is discussed and analyzed. Petrophysical properties such as relative permeability are important in many applied fields such as production of petroleum fluids, enhanced oil recovery, carbon dioxide sequestration, ground water flow, etc. Relative permeability data are used for a wide range of conventional reservoir engineering calculations and in numerical reservoir simulation. Twophase oil water relative permeability data are generated on the same core plug from both pore network model and experimental procedure. The shape and size of the relative permeability curves were compared and analyzed and good match has been observed for wetting phase relative permeability but for nonwetting phase, simulation results were found to be deviated from the experimental ones. Efforts to determine petrophysical properties of rocks using numerical techniques are to eliminate the necessity of regular core analysis, which can be time consuming and expensive. So a numerical technique is expected to be fast and to produce reliable results. In applied engineering, sometimes quick result with reasonable accuracy is acceptable than the more time consuming results. Present work is an effort to check the accuracy and validity of a previously developed pore network model for obtaining important petrophysical properties of rocks based on cuttingsized sample data. Introduction},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2011,
month = 1
}

This work reports the application of real rock statistical data to a previously developed regular pore network model in an attempt to produce an accurate simulation tool with low computational overhead. A core plug from the St. Peter Sandstone formation in Indiana was scanned with a high resolution micro CT scanner. The porethroat statistics of the threedimensional reconstructed rock were extracted and the distribution of the porethroat sizes was applied to the regular pore network model. In order to keep the equivalent model regular, only the throat area or the throat radius was varied. Ten realizations of randomly distributed throatmore »

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