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Title: Flow units from integrated WFT and NMR data

Abstract

Reliable and continuous permeability profiles are vital as both hard and soft data required for delineating reservoir architecture. They can improve the vertical resolution of seismic data, well-to-well stratigraphic correlations, and kriging between the well locations. In conditional simulations, permeability profiles are imposed as the conditioning data. Variograms, covariance functions and other geostatistical indicators are more reliable when based on good quality permeability data. Nuclear Magnetic Resonance (NMR) logging and Wireline Formation Tests (WFT) separately generate a wealth of information, and their synthesis extends the value of this information further by providing continuous and accurate permeability profiles without increasing the cost. NMR and WFT data present a unique combination because WFTs provide discrete, in situ permeability based on fluid-flow, whilst NMR responds to the fluids in the pore space and yields effective porosity, pore-size distribution, bound and moveable fluid saturations, and permeability. The NMR permeability is derived from the T{sub 2}-distribution data. Several equations have been proposed to transform T{sub 2} data to permeability. Regardless of the transform model used, the NMR-derived permeabilities depend on interpretation parameters that may be rock specific. The objective of this study is to integrate WFT permeabilities with NMR-derived, T{sub 2} distribution-based permeabilities and therebymore » arrive at core quality, continuously measured permeability profiles. We outlined the procedures to integrate NMR and WFT data and applied the procedure to a field case. Finally, this study advocates the use of hydraulic unit concepts to extend the WFT-NMR derived, core quality permeabilities to uncored intervals or uncored wells.« less

Authors:
; ;
Publication Date:
Research Org.:
BDM Corp., Bartlesville, OK (United States); American Association Petroleum Geologists, Tulsa, OK (United States)
OSTI Identifier:
508518
Report Number(s):
CONF-970317-
ON: DE97004613; TRN: 97:003410-0026
Resource Type:
Conference
Resource Relation:
Conference: 4. international reservoir characterization technical conference, Houston, TX (United States), 2-4 Mar 1997; Other Information: PBD: [1997]; Related Information: Is Part Of 4. International reservoir characterization technical conference; PB: 726 p.
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 58 GEOSCIENCES; RESERVOIR ROCK; NUCLEAR MAGNETIC RESONANCE; PERMEABILITY; MATERIALS TESTING; BOREHOLES; NUCLEAR MAGNETIC LOGGING; KRIGING

Citation Formats

Kasap, E, Altunbay, M, and Georgi, D. Flow units from integrated WFT and NMR data. United States: N. p., 1997. Web.
Kasap, E, Altunbay, M, & Georgi, D. Flow units from integrated WFT and NMR data. United States.
Kasap, E, Altunbay, M, and Georgi, D. 1997. "Flow units from integrated WFT and NMR data". United States. https://www.osti.gov/servlets/purl/508518.
@article{osti_508518,
title = {Flow units from integrated WFT and NMR data},
author = {Kasap, E and Altunbay, M and Georgi, D},
abstractNote = {Reliable and continuous permeability profiles are vital as both hard and soft data required for delineating reservoir architecture. They can improve the vertical resolution of seismic data, well-to-well stratigraphic correlations, and kriging between the well locations. In conditional simulations, permeability profiles are imposed as the conditioning data. Variograms, covariance functions and other geostatistical indicators are more reliable when based on good quality permeability data. Nuclear Magnetic Resonance (NMR) logging and Wireline Formation Tests (WFT) separately generate a wealth of information, and their synthesis extends the value of this information further by providing continuous and accurate permeability profiles without increasing the cost. NMR and WFT data present a unique combination because WFTs provide discrete, in situ permeability based on fluid-flow, whilst NMR responds to the fluids in the pore space and yields effective porosity, pore-size distribution, bound and moveable fluid saturations, and permeability. The NMR permeability is derived from the T{sub 2}-distribution data. Several equations have been proposed to transform T{sub 2} data to permeability. Regardless of the transform model used, the NMR-derived permeabilities depend on interpretation parameters that may be rock specific. The objective of this study is to integrate WFT permeabilities with NMR-derived, T{sub 2} distribution-based permeabilities and thereby arrive at core quality, continuously measured permeability profiles. We outlined the procedures to integrate NMR and WFT data and applied the procedure to a field case. Finally, this study advocates the use of hydraulic unit concepts to extend the WFT-NMR derived, core quality permeabilities to uncored intervals or uncored wells.},
doi = {},
url = {https://www.osti.gov/biblio/508518}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 1997},
month = {Fri Aug 01 00:00:00 EDT 1997}
}

Conference:
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