Proceedings of SPE Middle East Oil and Gas Show and Conference 2005
DOI: 10.2523/92426-ms
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Cased-Hole Reservoir Saturation Monitoring in Mixed Salinity Environments - A New Integrated Approach

Abstract: TX 75083-3836, U.S.A., fax 01-972-952-9435. Near wellbore effects Effect on shallow nuclear logging Deviated wells Acid effect Effect on Σ Lithology

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Cited by 13 publications
(9 citation statements)
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“…Hence, a strong correlation represents an independent confirmation of wettability variation. Ma et al (2005) show that the resistivity index recorded during the drainage and imbibition cycles in carbonates can follow different paths. The cores under study were allowed to age at reservoir temperature and pressure at the end of the drainage cycle while saturated with reservoir crude.…”
Section: Wettability Estimates From Logsmentioning
confidence: 93%
“…Hence, a strong correlation represents an independent confirmation of wettability variation. Ma et al (2005) show that the resistivity index recorded during the drainage and imbibition cycles in carbonates can follow different paths. The cores under study were allowed to age at reservoir temperature and pressure at the end of the drainage cycle while saturated with reservoir crude.…”
Section: Wettability Estimates From Logsmentioning
confidence: 93%
“…In the case of reservoirs under water injection this might not always be true, since the saturation exponent "n" can vary depending on whether the rocks are in drainage (oil displacing water) or imbibition (water displacing oil) state (Ma et al, 2005). For carbonates it is also known that the cementation factor "m" is related to rock texture (presence of isolated, moldic porosity; fractures, etc.…”
Section: Archie Equation Parametersmentioning
confidence: 99%
“…A methodology integrating data from water samples collected at surface or at the bottom of the hole was proposed by Ma et al, 2005, to calibrate a pseudo formation water salinity profile derived from the C/O logs (using Cl and H yields from the capture spectra). The calibrated formation water salinity can thereby be used to compute Sw more accurately from resistivity.…”
Section: Introductionmentioning
confidence: 99%
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“…pulsed neutron (PN) and resistivity logs, have very shallow depth of investigation (ranging from a few centimeters for PN logs to a maximum of about 3 m for the resistivity logs 3 and are limited to near well bore measurements. Therefore, they cannot be used effectively for flood-front monitoring at the inter-well scale.…”
Section: Introductionmentioning
confidence: 99%