COMPACTING AND ACCUMULATION HISTORY OF CHANG 6-CHANG 9 RESERVOIRS FROM THE TRIASSIC YANCHANG FORMATION IN ZHIDAN OILFIELD

LIU Ling; ZHANG Chuang; SUN Ming

doi:10.13686/j.cnki.dzyzy.2023.03.009

2023 Vol. 32, No. 3

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LIU Ling, ZHANG Chuang, SUN Ming. COMPACTING AND ACCUMULATION HISTORY OF CHANG 6-CHANG 9 RESERVOIRS FROM THE TRIASSIC YANCHANG FORMATION IN ZHIDAN OILFIELD[J]. Geology and Resources, 2023, 32(3): 327-334. doi: 10.13686/j.cnki.dzyzy.2023.03.009

Citation:

LIU Ling, ZHANG Chuang, SUN Ming. COMPACTING AND ACCUMULATION HISTORY OF CHANG 6-CHANG 9 RESERVOIRS FROM THE TRIASSIC YANCHANG FORMATION IN ZHIDAN OILFIELD[J]. Geology and Resources, 2023, 32(3): 327-334. doi: 10.13686/j.cnki.dzyzy.2023.03.009

COMPACTING AND ACCUMULATION HISTORY OF CHANG 6-CHANG 9 RESERVOIRS FROM THE TRIASSIC YANCHANG FORMATION IN ZHIDAN OILFIELD

1.
Exploration and Development Research Center of Yanchang Oilfield Co., Ltd., Yan'an 716000, Shaanxi Province, China
2.
Zhidan Oil Production Plant of Yanchang Oilfield Co., Ltd., Yan'an 717500, Shaanxi Province, China

Received Date: 13 September 2021

Revised Date: 18 April 2022

Publish Date: 25 June 2023

Abstract

Abstract

The diagenetic densification process of sandstone reservoir is restored and pore evolution law of sandstone in each horizon is established through the study of Chang 6-Chang 9 reservoirs in North Zhifang area of Zhidan Oilfield. The oil charging period and time of Chang 6-Chang 9 oil groups, as well as the accumulation history of oil reservoir in the area, are determined on the basis of analysis on homogenization temperature of fluid inclusions and fluorescence spectrum test. The analysis of coupling relationship between diagenesis-densification-accumulation reveals that the Chang 6-Chang 9 reservoirs are characterized by densification before the hydrocarbon accumulation, which provides a theoretical basis for determination of the main controlling factors of accumulation and prediction of favorable areas in the future.
- fluid inclusion /
- compacting history /
- accumulation history /
- Yanchang Formation /
- reservoir /
- Zhidan Oilfield

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References

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