An Integrated Workflow for Granitic Basement Reservoir Evaluation
- Sherif M. Farag (Schlumberger) | Cholid Mas (Schlumberger) | Pierre-David Maizeret (Schlumberger) | Bingjian Li (Schlumberger) | Hung Van Le (Lamson JOC)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- December 2010
- Document Type
- Journal Paper
- 893 - 905
- 2010. Society of Petroleum Engineers
- 5.6.4 Drillstem/Well Testing, 5.6.1 Open hole/cased hole log analysis, 3.3.1 Production Logging
- granite basement reservoirs, Fractured Reservoirs
- 6 in the last 30 days
- 1,711 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 12.00|
|SPE Non-Member Price:||USD 35.00|
In recent years, energy companies in the Asia Pacific region have focused increasing attention on granitic basement reservoirs, following several new oil and gas discoveries in these complex reservoirs. However, accurate formation evaluation in fractured, crystalline, granitic reservoirs is notoriously difficult. Furthermore, relatively little research has been conducted to understand logging tool response or pressure transient behavior, or to develop suitable workflows for formation evaluation in these types of reservoirs. In this paper, we propose a methodology for integrating various open-hole logs, production logs and well test data to better evaluate the reservoir potential of fractured granitic formations. Since the wells are either horizontal or highly deviated, this workflow also serves as a primary method of assessing the lateral extent of a reservoir. We include a case study from the region to illustrate the workflow. Image log interpretation, advanced acoustic measurements, nuclear logs and production logs with distributed local sensors are combined with well test data to derive the best possible evaluation of the fracture network around the borehole and the degree of connectivity with the reservoir at large. We also discuss the advantages and limitations of the proposed workflow, and set the stage for further work in this complex environment.
|File Size||10 MB||Number of Pages||13|
Anderson, R. and O'Malley, H. 1985. Frequency Response and AttenuetionChanges Across Highly Altered Fracture Zones Crosscutting a Fast Formation: TheOceanic Crust of the Mid-Atlantic Ridge. Paper LLL presented at the SPWLAAnnual Logging Symposium, Dallas, 17-20 June.
Bourdet, D. 2002. Well test analysis: the use of advanced interpretationmodels, 215. Amsterdam: Elsevier B.V.
Bratton, T., Canh, D.V., Van Que, N., Duc, N.V., Gillespie, P., Hunt, D.,Li, B. et al. 2006. The Nature of Naturally Fractured Reservoirs. OilfieldReview 18 (2): 4-23.
Brie, A., Hsu, K., and Eckersley, C. 1998. Using the Stoneley NormalizedDifferential Energies for Fractured Reservoir Evaluation. Paper XX presented atthe SPWLA Annual Logging Symposium, San Antonio, Texas, USA, 5-8 June.
Carrillat A. and Lefranc M. 2008. Fractured Basement Characterization fromMulti-Attribute Guided Integrated Continuous Fracture Modeling. Presented atthe International Petroleum Technology Conference, IPTC, Kuala Lumpur,Malaysia, 3-5 December.
Donald, A. and Bratton, T. 2006. Advancements in Acoustic Techniques forEvaluating Open Natural Fractures. Presented at the SPWLA Annual LoggingSymposium, Veracruz, Mexico, 4-7 June.
Faivre, O. 1993. FractureEvaluation From Quantitative Azimuthal Resistivities. Paper SPE 26434presented at the SPE Annual Technical Conference and Exhibition, Houston, 3-6October. doi: 10.2118/26434-MS.
Hill, A.D. 1990. Production Logging: Theoretical and InterpretiveElements. Monograph Series, SPE, Richardson, Texas, USA 14.
Hornby, B.E., Luthi, S.M., and Plumb, R.A. 1992. Comparison of FractureApertures Computed from Electrical Borehole Scans and Reflected Stoneley Waves:An Integrated Interpretation. The Log Analyst 33 (1):50-66.
Kostek, S., Johnson, D.L., Winkler, K.W., and Hornby, B.E. 1998. The interaction of tube waves withborehole fractures, Part II: Analytical models. Geophysics 63 (3): 809-815. doi:10.1190/1.1444392.
Li, B., Guttormsen, J., Hoi, T.V., and Duc, N.V. 2004. Characterizing Permeability for theFractured Basement Reservoirs. Paper SPE 88478 presented at the SPE AsiaPacific Oil and Gas Conference and Exhibition, Perth, Australia, 18-20 October.doi: 10.2118/88478-MS.
Long, N.T., Guttormsen, J.J., Jonklaas, P., Kwon, I., Dung, T.H., and Li, B.2003. Fracture Characterization Of The Su Tu Den And Su Tu Vang Fields, CuulongBasin, Vietnam. Presented at the PetroVietnam Technical Forum, Ha Noi, Vietnam,January.
Luthi, S.M. and Souhaité, P. 1990. Fracture apertures from electricalborehole scans. Geophysics 55 (7): 821.doi:10.1190/1.1442896.
McHattie, C. 1992. Determination of Fracture Intensity and ReservoirPotential in the Monterey Formation, Point Arguello Field, Offshore California.Paper X presented at the SPWLA Annual Logging Symposium, Oklahoma City,Oklahoma, USA, 14-17 June.
Ngoc, L.S., Jamiolahmady, M., Questiaux, J.-M., and Sohrabi, M. 2007. An Integrated Geology and ReservoirEngineering Approach for Modeling and History Matching of a VietnameseFractured Granite Basement Reservoir. Paper SPE 107141 presented at theEUROPEC/EAGE Conference and Exhibition, London, 11-14 June. doi:10.2118/107141-MS.
Paillet, F.L. 1980. Acoustic Propagation in the Vicinity of Fractures WhichIntersect a Fluid-Filled Borehole. Paper DD presented at the SPWLA AnnualLogging Symposium, Lafayette, Louisiana, USA, 8-11 July.
Paillet, F.L., Cheng, C.H., and Tang, X.M. 1989. Theoretical Models RelatingAcoustic Tube-Wave Attenuation to Fracture Permeability--Reconciling ModelResults with Field Data. Paper FF presented at the SPWLA Annual LoggingSymposium, Denver, 11-14 June.
Plona, T., Valero, H.-P., Bose, S., Walsh, J., Wielemaker, E., andSaldungaray, P. 2007. Reliablesmall-percentage azimuthal anisotropy evaluation from a new wirelinecross-dipole sonic tool: Field Examples from US, Mexico and Ukraine. SEGExpanded Abstracts 26 (BG1 Acoustics): 328-332. doi:10.1190/1.2792436.
Sanders, M. 2008. A method of detemining the caliper measurement of aborehole in basement formations using the Stoneley waveforms, as aid tofracture detection. Invention Disclosure, Docket No. 122.0036, SchlumbergerTechnology Corporation, Cambridge, Massachusetts, USA.
Shiomoto, Y. 2003. Basement Reservoir Model Construction For Rang DongField. Presented at the PetroVietnam Technical Forum, Ha Noi, Vietnam,January.
Sibbit, A.M. 1995. QuantifyingPorosity and Estimating Permeability from Well Logs in Fractured BasementReservoirs. Paper SPE 30157 presented at PetroVietnam, Ho Chi Minh City,Vietnam, 1-3 March. doi: 10.2118/30157-MS.
Sibbit, A.M. and Faivre, O. 1985. The Dual Laterolog Response in FracturedRocks. Paper T presented at the SPWLA Annual Logging Symposium, Dallas, 17-20June.
Tandom, P.M., Ngoc, N.H., Tjia, H.D., and Lloyd, P.M. 1999. Identifying and Evaluating ProducingHorizons in Fractured Basement. Paper SPE 57324 presented at the SPE AsiaPacific Improved Oil Recovery Conference, Kuala Lumpur, 25-26 October. doi:10.2118/57324-MS.
Wang, H.M., Shen, L.C., and Zhang, G.J. 1998. Dual Laterolog Response in 3-DEnvironments. Paper X presented at the SPWLA Annual Logging Symposium,Keystone, Colorado, USA, 26-29 May.