Hydrocarbon Detection Based on Phase Decomposition in Chaoshan Depression, Northern South China Sea

Updata:01-01-1970

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DOI: https://doi.org/10.30564/jms.v3i2.3063

Abstract:

Located in the northern South China Sea, Chaoshan Depression is mainly a residual Mesozoic depression, with a construction of Meso-Cenozoic strata over 7000m thick and good hydrocarbon accumulation conditions. Amplitude attribute of -90°phase component derived by phase decomposition is employed to detect Hydrocarbon in the zone of interest (ZOI) in Chaoshan Depression. And it is found that there are evident amplitude anomalies occurring around ZOI. Phase decomposition is applied to forward modeling results of the ZOI, and high amplitudes occur on the -90°phase component more or less when ZOI is charged with hydrocarbon, which shows that the amplitude abnormality in ZOI is probably caused by oil and gas accumulation.

References:

[1]Liu G D. 2001. The second exploitation of the oil and gas resources in China [J]. Progress in Geophysics, 16(4):1-3. [2]Zhang J Y, SUN Z, Zhang S F. 2014. Analysis of Mesozoic tectonic deformation in the Chaoshan Depression of Pearl River Mouth Basin [J]. Journal of Tropical Oceanography, 33(5):41-49. [3]Hao H J, Lin H M, Yang M X, et al. 2001. The Mesozoic in Chaoshan depression: A new domain of petroleum exploration. China Offshore Oil and Gas (in Chinese), 15(3):157-163. [4]Wang L L, Cheng R H, LI F, et al. 2009. The Mesozoic Sedimentary Sequences, Correlation and Geological Significance for Petroleum of the North Margin of South China Sea [J]. Journal of Jilin University (Earth Science Edition), 39(2):175-182. [5]Zhang L, Geng A s, Wang LL, et al. 2012. Assessment of Mesozoic source rocks at The Margin of South China Continent [J]. Marine Geology & Quaternary Geology, 32(1):99-108. [6]Ji Z Y, Zhao H Q, et al. 2014. The Mesozoic Petroleum System of Chaoshan depression. Petroleum Geology and Enginerering, 28(3): 9-15. [7]Wang P, Xia K Y, Huang C L. 2000. The Mesozoic Marine sediment distribution and Geology-Geophysics characteristic at the North-Eastern of South China Continent [J]. Journal of Tropical Oceanography, 19(4):28-35. [8]Duan J C, Mi H F. 2012. Seismic Facies and Sedimentary Facies study of Mesozoic in Chaoshan Sag [J]. Resources & Industries, 14(1):100-105. [9] Hao H J, Wang R L, Zhang X T, et al. 2004. Mesozoic marine sediment identification and distribution in the eastern Pearl River Mouth Basin. China Offshore Oil and Gas, 16(2):84-88. [10] Zhang Q L, Zhang H F, Zhang X T, et al. 2018. The upper Cretaceous prototype basin of the Chaoshan depression in the northern South China Sea and its tectonic setting [J].Chinese Journal of Geophysics,vol61(10):p4308-4321. [11] Zhou D, Chen H Z. Sun Z, et al. 2005. Three Mesozoic sea basins in the eastern and southern South China Sea and their relation to Tethys and Paleo-Pacific domains. Journal of Tropical Oceanography, 24(2):16-25. [12] Yao B C, Zhang L, Wei Z Q, et al. 2011. The Mesozoic Tectonic Characteristics and Sediment Basins in the Eastern Margin of South China Continen [J]. Marine Geology & Quaternary Geology, 31(3):47-60. [13] Zhong G J, Wu S M, Feng C M. 2011. Sedimentary model of Mesozoic in the northern South China Sea. Journal of Tropical Oceanography, 30(1):43-48. [14] Hao H J, Shi H S, Zhang X T, et al. 2009. Mesozoic sediments and their petroleum geology conditions in Chaoshan sag: A discussion based on drilling results from the exploratory well LF35-1-1. China Offshore Oil and Gas (in Chinese), 21(3):151-156. [15] Zhong G J, Yi H, Lin Z, et al. 2007. Characteristic of Source Rocks and Mesozoic in Continental Slope Area of Northeastern the South China Sea and East Guangdong of China. XINJIANG Petroleum Geology, 28 (6):676-680. [16] Yang S C, Tong Z G, He Q, et al. 2009. Mesozoic hydrocarbon generation history and igneous intrusion impacts in Chaoshan depression, South China Sea: A case of LF35-1-1 well. China Offshore Oil and Gas (in Chinese), 20(3):152-156. [17] Castagna, J., A. Oyem, O. Portniaguine, and U. Aikulola, 2016, Phase decomposition: Interpretation, 4, no. 3, SN1–SN10, DOI: 10.1190/INT-2015-0150.1. [18] Elita Selmara De Abreu, John Patrick Castagna and Gabriel Gil, 2018, Case study: Phase-component amplitude variation with angle: Geophysics, 84, B285–B297, DOI: 10.1190/GEO2018-0762.1. [19] Barbato, U., O. Portniaguine, B. Winkelman, and J. Castagna, 2017, Phasedecomposition as a DHI in bright-spot regimes: A Gulf of Mexico casestudy: 87th Annual International Meeting, SEG, Expanded Abstracts, 3976-3980, DOI: 10.1190/segam2017-17737608.1. [20] Partyka, G., J. Gridley, and J. Lopez, 1999, Interpretational applications ofspectral decomposition in reservoir characterization: The Leading Edge, 18, 353-360. [21] Barnes, A. E., 1993, Instantaneous spectral bandwidth and dominantfrequency with applications to seismic reflection data: Geophysics, 58,419-428, DOI: 10.1190/1.1443425. [22] Bracewell, R. N., 1978, The Fourier Transform and its applications: McGraw-Hill.

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