Identifying Gas-Washing and Water-Washing of Oil Reservoirs by Fluorescence and Infrared Spectra of Single Oil Inclusion

Ao SU; Pei-jun LI; Ming-zhu LEI; Qiang LIU; Xin ZHANG

doi:10.3964/j.issn.1000-0593(2021)08-2649-08

Journals >Spectroscopy and Spectral Analysis >Volume 41 >Issue 8 >Page 2649 > Article

Spectroscopy and Spectral Analysis
Vol. 41, Issue 8, 2649 (2021)

Identifying Gas-Washing and Water-Washing of Oil Reservoirs by Fluorescence and Infrared Spectra of Single Oil Inclusion

Ao SU^1、*, Pei-jun LI^{2、2; *;}, Ming-zhu LEI^3、3;, Qiang LIU^4、4;, and Xin ZHANG^5、5;

Author Affiliations

¹1. School of Geosciences, Yangtze University, Wuhan 430000, China

²2. Wuhan Center of Geological Survey, China Geological Survey, Wuhan 430205, China

³3. Hainan Branch Company of China National Offshore Oil Corporation, Haikou 570311, China

⁴4. Bureau of Geophysical Prospecting INC., China National Petroleum Corporation, Zhuozhou 072750, China

⁵5. Tianjin Branch Company of China National Offshore Oil Corporation, Tianjin 300452, China

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DOI: 10.3964/j.issn.1000-0593(2021)08-2649-08 Cite this Article

Ao SU, Pei-jun LI, Ming-zhu LEI, Qiang LIU, Xin ZHANG. Identifying Gas-Washing and Water-Washing of Oil Reservoirs by Fluorescence and Infrared Spectra of Single Oil Inclusion[J]. Spectroscopy and Spectral Analysis, 2021, 41(8): 2649 Copy Citation Text

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Fig. 1. Fluorescence spectra and CIE chromaticity of oil inclusions in reservoirs altered by gas-washing

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Fig. 2. Fluorescence spectra and CIE chromaticity of oil inclusions in reservoirs altered by water-washing

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Fig. 3. (a) Fourier infrared spectra of inclusion trapping oil altered by gas-washing; (b) Fourier infrared spectra of inclusion trapping oil altered by water-washing

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Fig. 4. Histogram of spectral parameters QF-535, CH₂/CH₃, and H₂O/Alkanes for inclusions trapping oil altered by gas-washing and original oil

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Fig. 5. Histogram of spectral parameters QF-535, CH₂/CH₃ and H₂O/Alkanes for inclusions trapping oil altered by water-washing and original oil

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Fig. 6. Two spectral parameter distribution trend pattern diagrams to identify oil reservoirs subjected to water-washing and gas-washing

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Region	Alteration	Inclusion occurrence	λ_max	QF₅₃₅	CH₂/CH₃	H₂O/alkane
Xihu sag	No gas-washing	HFWQG	489	0.93	1.5	0.2
		HFWQG	492	0.91	1.4	1.2
		HFWQG	488	0.84	1.6	2.4
		HFCTQG	494	0.89	1.7	0.1
		HFCTQG	496	0.68	1.5	4.5
		HFWQG	490	0.75	1.8	2.9
	Gas-washing	HFCTQG	463	0.67	1.3	0.4
		HFCTQG	462	0.53	1.6	0.1
		HFCTQG	459	0.35	1.5	2.6
		HFCTQG	489	1.0	1.7	3.1
		HFCTQG	495	0.92	1.5	0.5
		HFCTQG	493	0.86	1.3	0.9
		HFCTQG	488	0.89	1.1	3.8
		HFCTQG	513	1.18	1.9	2.4
		HFCTQG	514	1.45	1.9	5.4
		HFCTQG	515	1.65	2.0	1.5
Dongying sag	No water-washing	HFWQG	440	0.38	0.9	0.6
		HFWQG	445	0.44	1.1	0.3
		HFWQG	439	0.55	1.5	1.4
		HFWQG	442	0.57	1.7	2.5
		HFCTQG	442	0.41	1.3	3.5
		HFCTQG	445	0.54	1.3	6.4
		HFCTQG	440	0.51	1.4	0.5
	Water-washing	HFWQG	439	0.38	1.4	0.9
		HFWQG	445	0.52	1.55	5.4
		HFWQG	475	0.67	2.1	10.6
		HFWQG	472	0.77	1.3	2.2
		HFWQG	495	0.9	1.9	12.6
		HFWQG	496	1.24	2.3	11.5
		HFWQG	520	1.33	2.6	7.5
		HFWQG	522	1.56	1.8	7.9

Table 1. Fluorescence and infrared spectral parameters of single oil inclusions

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