Forecasting zonation of oil-gas prospects in the sedimentary basins of the Northeast Vietnam continental shelf based on gravity and borehole data
Author affiliations
DOI:
https://doi.org/10.15625/1859-3097/17234Keywords:
Normalized total gradient, oil/gas prospect, Fourier developed coefficient.Abstract
This study used the 2D and 3D normalized total gradient (NTG) method of gravity anomalies to detect the gravity anomalies caused by oil-gas reservoirs. The NTG of gravity anomalies can be associated with known oil-gas reservoirs, and most of them seem to be a good coincidence with the reservoirs. The closed minima of the NTG of gravity anomalies indicate the existence and locations of the density deficient anomalies closely related to the possible oil-gas reservoirs. The reliability of the NTG method depends mainly on the Fourier-developed coefficient N. Here, N is optimally selected by the borehole data. The 2D, 3D normalized total gradient method is applied in the sedimentary basins of the Northeast Vietnam continental shelf. Borehole data confirm the results of the method.
Downloads
Metrics
References
Berezkin, W. M., 1973. Application of gravity exploration to reconnaissance of oil and gas reservoir. Nedra Publishing House.
Zeng, H., Meng, X., Yao, C., Li, X., Lou, H., Guang, Z., and Li, Z., 2002. Detection of reservoirs from normalized full gradient of gravity anomalies and its application to Shengli oil field, east China. Geophysics, 67(4), 1138–1147.
Cianciara, B., and Marcak, H., 1979. Geophysical anomaly interpretation of potential fields by means of singular points method and filtering. Geophysical prospecting, 27(1), 251–260.
Hung, N. T, and Dung, T. T., 2005. Using normalized total gradient of gravity anomalies method in combination with seismic and borehole data to estimate the oil-gas potential for Tien Hung formation (N13) in the north part of Red River basin. PetroVietnam Journal, 2, 19–25.
Kha, T. V., Vuong, H. V., and Dung, N. K., 2014. The relationship between harmonic N and normalized full gradient maximum in determination of depth to source based on gravity data. Vietnam Journal of Marine Science and Technology, 14(4A), 112–117.
Dien, P. T., Quy, N. H., Tiem, P. V., Tai, P. S., Andersen, C., and Nielsen, L. H., 1999. Basin analysis and petroleum system of the Song Hong Basin. Geology and Petroleum in Vietnam. The 36th CCOP and Annual Session, October 26–29, and 34th CCOP Steering Committee Meeting, November 1–2, 1999, Hanoi, Vietnam, pp. 44–67.
Ha, N. B., 1998. Studying source rocks in the Song Hong sedimentary basin. In Proceedings from the Conference on Vietnam Petroleum Institute, 20, 186–204.
Vu, N. G., 2003. Structural evolution of the block 102 and 106 Red river basinimplication for hydrocarbon potential. In Proc. Conf. Vietnam Petroleum Institute: 25 Years of Development and Achievement, pp. 283–309.
Nielsen, L. H., Mathiesen, A., Bidstrup, T., Vejbæk, O. V., Dien, P. T., and Tiem, P. V., 1999. Modelling of hydrocarbon generation in the Cenozoic Song Hong Basin, Vietnam: a highly prospective basin. Journal of Asian Earth Sciences, 17(1–2), 269–294.
Dung, T. T., Van Sang, N., Dai, N. B., Dung, N. K., Lap, T. T., Duong, T. T., and Ha, N. T. H., 2019. Improving accuracy of altimeter-derived marine gravity anomalies in the East Vietnam Sea deep-basin and adjacent area. Vietnam Journal of Marine Science and Technology, 19(3B), 43–53.
Dung, T. T., Thanh, N. T., Dai, N. B., Lap, T. T., Dung, N. K., Loi, T. X., Duong, T. T., Tinh, N. V., Cuong, P. H., and Thuc, D. N., 2021. Investigation and evaluation of Late Quaternary geology-sediment characteristics related to erosion and accretion in the coastal area of Thai Binh-Quang Ninh. Project under the Basic Investigation Tasks, Code: UQĐTCB.02/21–22.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Vietnam Academy of Science and Technology
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
