Enhancement of Seismic Data Processing and Interpretation of Fracture Zones on the Upper Part of Granitic Basement in Cuu Long Basin, Vietnam

• Autorzy: Tan M. T. , Ha M. T. , Marfurt K. J. , Hieu N. T. , Hanh N. T. M.

Identyfikatory

DOI

10.1515/acgeo-2016-0082

• Języki publikacji: EN

Abstrakty

EN

The fractured granite basement is the primary oil and gas reservoir in the Cuu Long Basin, Vietnam. Due to the complexity of this nonlayered unconventional target, combined with complicated fault and fracture systems, the seismic data quality near and within the basement section is very low. For this reason, it is important to apply improved seismic data processing workflows, filtering and migration techniques, as wells as attribute processing methods to enhance the imaging quality. Our studies show that applying different types of filters, including the f-k, Radon transform and Tau-P, improves signal to noise ratio, removing multiples, revealing basement’s top and its related fractured and fault zones. In addition, the application of multi-arrival-solution migration algorithms, such as Kirchhoff Migration and Controlled Beam Migration, provides improved imaging for identifying basement top and faults and fractures within the basement. Furthermore, the application of seismic attributes such as curvature, apparent dip, or energy gradient, is important in locating faults and fractures, whereas mapping of intensity and orientation of such structures assists the delineation of “sweet spots” and assists the planning of exploration.

Słowa kluczowe

EN

Cuu Long Basin; faults; filters; migration; imaging; attributes; fractured basement

PL

Basen Cuu Long; błędy; filtry; migracja; obrazowanie; atrybut

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2016
• Tom: Vol. 64, no. 6
• Strony: 2214--2231
• Opis fizyczny: Bibliogr. 34 poz.

Twórcy

autor

Tan M. T.

• Hanoi University of Mining and Geology, Dong Ngac, Tu Liem, Hanoi, Vietnam

autor

Ha M. T.

• Petrovietnam Exploration and Production Corporation, Tran Duy Hung, Hanoi, Vietnam

autor

Marfurt K. J.

• The University of Oklahoma, Norman, Oklahoma, USA

autor

Hieu N. T.

• Vietnam Petroleum Institute, Trung Kinh, Tu Liem, Hanoi, Vietnam

autor

Hanh N. T. M.

• Petrovietnam Exploration and Production Corporation, Tran Duy Hung, Hanoi, Vietnam

Bibliografia

• Areshev, E.G., T.L. Dong, N.T. San, and O.A. Shnip (1992), Reservoirs in fractured basement on the continental shelf of Southern Vietnam, J. Petrol. Geol. 15, 4, 451-464, DOI: 10.1111/j.1747-5457.1992.tb01045.x.
• Barnes, A.E. (2003), Shaded relief seismic attribute, Geophysics 68, 4, 1281-1285, DOI: 10.1190/1.1598120.
• Benoliel, S.D., W.A. Schneider, and R.N. Shurtleff (1987), Frequency wavenumber approach of the Tau-P transform: Some applications in seismic data processing, Geophys. Prospect. 35, 5, 517-538, DOI: 10.1111/j.1365-2478. 1987.tb00833.x.
• Bone, G., N.T. Giang, D.N. Quy, V.N. An, D. Pham, J. Sun, and Q. Tang (2008), Improvements in seismic imaging in fractured basement, Block 15-1, Offshore Vietnam: Fractured basement reservoir, Petrovietnam Rev. 4, 63-69.
• Chapman, C.H. (1981), Generalized Radon transforms and slant stacks, Geophys. J. Roy. Astr. Soc. 66, 2, 445-453, DOI: 10.1111/j.1365-246X.1981.tb05966.x.
• Chopra, S., and K.J. Marfurt (2007), Seismic Attributes for Prospect Identification and Reservoir Characterization, SEG Geophysical Developments Series, No. 11, Society of Exploration Geophysicists, Tulsa, USA, 456 pp.
• Cuong, T.X., and J.K. Warren (2009), Bach Ho field, a fractured granitic basement reservoir, Cuu Long basin, offshore SE Vietnam: a “Buried-Hill” play, J. Petrol Geol. 32, 2, 129-156, DOI: 10.1111/j.1747-5457.2009.00440.x.
• Dong, H.N. (2012), Geological and tectonic characterization in the Northern part of Cuu Long Basin during Eocene-Oligocene, Ph.D. Thesis, Hanoi University of Mining and Geology, Hanoi, Vietnam.
• Dong, T.L., P.H. Long, H.V. Quy, P.D. Hai, and T.S. Hau (1999) Distribution of fractures, faults and their formation in the basement of South Vietnam continental shelf and adjacent areas, Petrovietnam Rev. 3, 4-13.
• Duc, N.A. (2014), Characteristics of Pre-Tertiary fractured granitoid basement in Hai Su Den field, Cuu Long basin, Petrovietnam J. 5, 15-22.
• Duncan, G., and G. Beresford (1994), Slowness adaptive f-k filtering of prestack seismic data, Geophysics 59, 1, 140-147, DOI: 10.1190/1.1443525.
• Elkady, N., Y.C. Tan, R. Baker, Z.J. Zhou, and A. Tan (2008), Imaging improvement of fractured and faulted basement through Controlled Beam Migration. Examples from Diamond field in Vietnam. In: International Petroleum Technology Conference, Kuala Lumpur, Malaysia.
• Foster, D.J., and C.C. Mosher (1992), Suppression of multiple reflections using the Radon Transform, Geophysics 57, 3, 386-395, DOI: 10.1190/1.1443253.
• Gardner, G.H.F. (1985), Migration of Seismic Data, SEG Monograph Series, 462 pp.
• Gray, S.H., Y. Xie, C. Notfors, T. Zhu, D. Wang, and C. Ting (2009), Taking apart Beam Migration, The Leading Edge 28, 9, 1098-1108, DOI: 10.1190/ 1.3236380.
• Gwang, H.L., L. Keumsuk, and J.S. Watkins (2001), Geologic evolution of the Cuu Long and Nam Con Son basins, offshore Southern Vietnam, South China Sea, AAPG Bull. 85, 6, 1055-1082.
• Ha, M.T., O. Elebiju, and K.J. Marfurt (2014), Attribute illumination of basement faults, examples from Cuu Long Basin basement, Vietnam and the Midcontinent, USA, Interpretation 2, 1, SA119-SA126, DOI: 10.1190/INT-2013- 0091.1.
• Hill, N.R. (2001), Prestack Gaussian-Beam depth migration, Geophysics 66, 4, 1240-1250, DOI: 10.1190/1.1487071.
• Le Pichon, X., M. Fournier, and L. Jolivet (1992), Kinematic, topography, shortening, and extrusion in the India-Eurasia collision, Tectonics 11, 6, 1085- 1089, DOI: 10.1029/92TC01566.
• Marfurt, K.J. (2006), Robust estimates of 3D reflector dip and azimuth, Geophysics 71, 4, 29-40, DOI: 10.1190/1.2213049.
• Raz, S. (1987), Beam stacking: a generalized preprocessing technique, Geophysics 52, 9, 1194-1210, DOI: 10.1190/1.1442383.
• San, N.T., N. Giao, and T.L. Dong (1997), Pre-Tertiary basement – The new objective for oil and gas exploration and production in the Continental Shelf of South Vietnam. In: Proc. Int. Conf. on Petroleum Systems of SE Asia and Australia, 461-465.
• Sheriff, R.E. (1999), Encyclopedic Dictionary of Exploration Geophysics, SEG.
• Sun, J., P. Don, J. Sun, Q. Tang, G. Bone, and N.T. Giang (2007), Imaging of fractures and faults inside granite basement using controlled beam migration. In: ASEG 19th International Geophysical Conference & Exhibition.
• Sun, Y., F. Qin, S. Checkles, and J.P. Leveille (2000), 3D Prestack Kirchhoff Beam Migration for depth imaging, Geophysics 65, 5, 1592-1603, DOI: 10.1190/ 1.1444847.
• Tan, M.T. (1990), The enhancement of seismic prospecting effectiveness for oil and gas under the conditions of the sedimentary basins in the continental shelf of Vietnam, Zesz. Nauk AGH Geofiz. Stos. Bull. 6, 1323, 142.
• Tan, M.T. (1995), Seismic stratigraphic studies of the continental shelf of Southern Vietnam, J. Petrol. Geol. 18, 3, 345-354, DOI: 10.1111/j.1747-5457.1995. tb00910.x.
• Tan, M.T., and M.T. Ha (2013), Enhancement of the seismic technology to improve imaging quality of fractured reservoir inside granite basement. In: Proc. 11th SEGJ Int. Symp., Yokohama, Japan, 160-163.
• Tan, M.T., and N.Q. Thap (2001), The possibility of applying geophysical methods to study fractured basement reservoir in the continental shelf of Vietnam. In: Proc. Offshore Technology Conf., 451-456.
• Tan, T.K., and N.Q. Bo (1997), Geological modeling and reservoir properties of basement rocks of the South Vietnam continental shelf. In: Proc. Int. Conf. on Petroleum Systems of SE Asia and Australia, 539-544.
• Tapponier, P., M. Peltzer, and R. Armijor (1986), On the mechanisms of the collision between India and Asia, Geol. Soc. London Spec. Publ. 19, 115-157.
• van der Baan, M., and J.M. Kendall (2002), Estimating anisotropy parameters and traveltimes in the τ-p domain, Geophysics 67, 4, 1076-1086, DOI: 10.1190/ 1.1500368.
• Wang, B., and K. Pann (1996), Kirchhoff migration of seismic data compressed by matching pursuit decomposition. In: SEG Technical Program Expanded Abstracts, 1642-1645.
• Yilmaz ,O. (2001), Seismic Data Analysis. Processing, Inversion, and Interpretation of Seismic Data, Series: Investigations in Geophysics, Vol. 1, Society of Exploration Geophysicists, Tulsa, USA.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)