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Carbon oxygen logs

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Proceedings Papers

Publisher: International Petroleum Technology Conference
Paper presented at the International Petroleum Technology Conference, February 21–23, 2022
Paper Number: IPTC-21976-MS
...Abstract Abstract Carbon/Oxygen (C/O) log is the most commonly used measurement for reservoir saturation monitoring (RSM), especially in fresh water and mixed salinity environments. In interpreting C/O logs, oil carbon density (OCD) is a required input parameter, where a single averaging number...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-13897
... and block diagrams of the slickline elements are presented, including options for optimal battery lifetime. Operating capabilities and parameters are explained in detail for sigma and inelastic carbon oxygen modes of tool operation. INTRODUCTION State-of-the-art pulsed-neutron logging tools...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, November 11–14, 2007
Paper Number: SPE-109608-MS
... Abstract We discuss our experience to date with the Carbon/Oxygen logging technique to determine vertical sweep in Belridge Diatomite in the Lost Hills Field. We describe early interpretation challenges with overly optimistic saturation estimation. This required in-house Monte Carlo modeling...
Proceedings Papers

Paper presented at the SPWLA 45th Annual Logging Symposium, June 6–9, 2004
Paper Number: SPWLA-2004-I
... in completion techniques commonly in use, such as, tubing-blast-joint-Internal Gravel Pack (IGP)- casing-formation, the various carbon-oxygen logging tools in the industry have had to be recharacterized for these conditions. The C/O log still has a lot of potential, not fully utilized in reservoir management...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 29–October 2, 2002
Paper Number: SPE-77784-MS
... Bypassed Reserves and Monitoring Fluids Using Carbon-Oxygen Logs in Tía Juana Field, Lake Maracaibo, Venezuela Erasmo Mendoza, and William Duran, PDVSA; Alan Monsegue and Germán García, SPE, Schlumberger 2 E. MENDOZA, W. DURAN, A. MONSEGUE, G. GARCIA SPE 77784 All these units extend along the entire field...
Journal Articles
SPE Res Eval & Eng 5 (01): 60–67.
Paper Number: SPE-76643-PA
Published: 01 February 2002
...M. J. Sullivan; D. L. Belanger; W. F. Stewart Summary Carbon/oxygen (C/O) logs have been run in open hole to assess zones that are potentially swept with fresh injection water in several infill wells offshore Cabinda, Angola. Interpretation of these logs has been challenging because of the invasion...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 1–4, 2000
Paper Number: SPE-62979-MS
... is difficult using traditional Pulsed Neutron Capture logging tools, which rely on measurement of chlorides in saline formation waters. One technique frequently employed in these circumstances is the use of Carbon Oxygen logging tools. These tools measure the relative abundance of carbon and oxygen, thereby...
Proceedings Papers

Paper presented at the SPWLA 39th Annual Logging Symposium, May 26–28, 1998
Paper Number: SPWLA-1998-CC
... ABSTRACT The ability of carbon/oxygen logs to predict oil saturation in three-phase reservoirs (steam, oil and water) is examined using Monte Carlo modeling and field data. First, the oil saturation from carbon/oxygen (GO) logs is compared with that from core data. Then conventional two-phase...
Proceedings Papers

Paper presented at the Middle East Oil Show and Conference, March 15–18, 1997
Paper Number: SPE-37774-MS
... Abstract The slim hole, 1 11/16 in OD, Carbon-Oxygen tool (RST-ATM) has been widely used in Saudi Arabia for the last 4 years for reservoir monitoring purposes. Because of the detectors size and configuration, the tool has to be run in shut-in conditions for the obtention of C/O logs...
Journal Articles
Petrophysics 33 (01).
Paper Number: SPWLA-1992-v33n1a1
Published: 01 January 1992
...Stephen A. Kerr; Richard Woodhouse Carbon/oxygen logging is used to determine oil saturation in cased holes without knowing formation-water salinity. The depth of investigation of the tool is shallow; when borehole effects are perfectly corrected, 50% of the carbon response comes from within 4...
Proceedings Papers

Paper presented at the International Meeting on Petroleum Engineering, November 1–4, 1988
Paper Number: SPE-17610-MS
... Abstract Carbon/oxygen logging is used to determine oil saturation in cased holes without knowing formation water salinity. When the carbon/oxygen tool is used alone, in non-extreme conditions, the accuracy of the interpreted So is calculated to be plus or minus 23 saturation units at 20...
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Proceedings Papers

Paper presented at the SPE Asia Pacific Oil and Gas Conference, November 7–10, 1994
Paper Number: SPE-28758-MS
... society of petroleum engineers upstream oil & gas log analysis indicator spe 28758 open perforation indonesian well jacobson activation upward separation perforated interval SPE 28758 Society of Petroleum Engineers Enhanced Carbon-Oxygen Log Interpretation Using Supplemental Log Curves D...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0021
... Abstract Pulsed neutron carbon-oxygen (C/O) logging is a valuable measurement for dynamic reservoir saturation monitoring, especially in mixed salinity and fresh-water environments. Currently, all C/O logs are based on apparent C/O measurements, thus responses of raw data are not comparable...
Proceedings Papers

Paper presented at the SPWLA 53rd Annual Logging Symposium, June 16–20, 2012
Paper Number: SPWLA-2012-188
...SPWLA 53 rd Annual Logging Symposium, June 16-20, 2012 1 IDENTIFYING BYPASSED OIL IN CAÑO LIMON WITH THE CARBON/OXYGEN LOG Marta Elena Becerra, David W. Hampton, Diana Mancilla, Jules Diaz, Rafael Rolon, Helbert Mackualo, and Alejandro Salgado, Occidental de Colombia; Xavier Goddyn and Juan Angel...
Proceedings Papers

Paper presented at the Nigeria Annual International Conference and Exhibition, July 30–August 3, 2011
Paper Number: SPE-150778-MS
... is used for tracking reservoir depletion, water-oil contact movement, deciding workover strategies, water-injection/waterflood management and enhanced recovery. World's most oil reservoirs are in low-salinity environment where Carbon-Oxygen (C/O) logging is invariably used to establish cased-hole oil...
Proceedings Papers

Paper presented at the SPWLA 51st Annual Logging Symposium, June 19–23, 2010
Paper Number: SPWLA-2010-51005
... ABSTRACT: Carbon/Oxygen (C/O) logging has been used to evaluate oil saturation in various types of reservoirs for decades (Smith, 1974). Even under the most ideal borehole and reservoir conditions, interpretation of the data can be extremely challenging. A common obstacle to the use of C/O...
Journal Articles
Petrophysics 46 (03).
Paper Number: SPWLA-2005-v46n3a4
Published: 01 May 2005
...Larry A. Jacobso; Jerry Truax ABSTRACT The interpretation of carbon/oxygen (C/O logs in reservoirs adjacent to gravel packs is complicated by the geometrical complexity of the borehole environment. Because gravel packs vary in dimensions and structure, each C/O log is often unique. Moreover...
Journal Articles
Petrophysics 46 (03).
Paper Number: SPWLA-2005-v46n3a2
Published: 01 May 2005
...Richard C. Odom; Don E. Tiller; Robert D. Wilson ABSTRACT Carbon/oxygen (C/O logging is routinely used to monitor oil reservoirs with low salinity water. The dynamics and statistics of this measurement are very poor, and design elements such as detector choice are important concerns. The literature...
Journal Articles
J Pet Technol 57 (05): 50–52.
Paper Number: SPE-0505-0050-JPT
Published: 01 May 2005
...Dennis Denney This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 90339, "Modern Carbon/Oxygen Logging Methodologies: Comparing Hydrocarbon-Saturation-Determination Techniques," by Ramsin Y. Eyvazzadeh, Oscar Kelder, A.A. Hajari, Shouxiang Ma, and Abdallah M...

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