Glutenite reservoir characteristics and development model of Permian Upper Wuerhe Formation in Fukang Sag, Junggar Basin

TANG Yong; YUAN Yunfeng; LI Hui; WANG Yafei; LÜ Zhengxiang; QING Yuanhua; LI Shubo; CHEN Hong; QIN Zhijun; WANG Qiuyu; XIE Zhiyi

doi:10.11781/sysydz202405965

Volume 46 Issue 5

Sep. 2024

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Article Navigation > PETROLEUM GEOLOGY & EXPERIMENT > 2024 > 46(5): 965-978

TANG Yong, YUAN Yunfeng, LI Hui, WANG Yafei, LÜ Zhengxiang, QING Yuanhua, LI Shubo, CHEN Hong, QIN Zhijun, WANG Qiuyu, XIE Zhiyi. Glutenite reservoir characteristics and development model of Permian Upper Wuerhe Formation in Fukang Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(5): 965-978. doi: 10.11781/sysydz202405965

Citation:

TANG Yong, YUAN Yunfeng, LI Hui, WANG Yafei, LÜ Zhengxiang, QING Yuanhua, LI Shubo, CHEN Hong, QIN Zhijun, WANG Qiuyu, XIE Zhiyi. Glutenite reservoir characteristics and development model of Permian Upper Wuerhe Formation in Fukang Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(5): 965-978. doi: 10.11781/sysydz202405965

Citation:

TANG Yong, YUAN Yunfeng, LI Hui, WANG Yafei, LÜ Zhengxiang, QING Yuanhua, LI Shubo, CHEN Hong, QIN Zhijun, WANG Qiuyu, XIE Zhiyi. Glutenite reservoir characteristics and development model of Permian Upper Wuerhe Formation in Fukang Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(5): 965-978. doi: 10.11781/sysydz202405965

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Glutenite reservoir characteristics and development model of Permian Upper Wuerhe Formation in Fukang Sag, Junggar Basin

doi: 10.11781/sysydz202405965

1.
Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
2.
Luliang Oilfield Operation Area, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
3.
College of Energy, Chengdu University of Technology, Chengdu, Sichuan 610059, China
4.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China
5.
School of History, Geography and Tourism, Chengdu Normal University, Chengdu, Sichuan 611130, China

Received Date: 2023-09-26
Rev Recd Date: 2024-08-14
Publish Date: 2024-09-28

Abstract

Abstract

The glutenites in the Permian Upper Wuerhe Formation in the Fukang Sag of the Junggar Basin possess great potential for oil and gas exploration. However, uncertainties in the reservoir characteristics and formation mechanisms of these glutenites seriously restrict their effective exploration. The study provides a compre- hensive analysis on the characteristics, main controlling factors, and development models of glutenite reservoirs of the Upper Wuerhe Formation in the Fukang Sag of the Junggar Basin using microscopic thin sections, scanning electron microscopy (SEM), and X-ray diffraction (XRD). The results show that: (1) Two types of interstitial materials are observed in the glutenites of the Upper Wuerhe Formation, where the spaces between gravels are primarily interstitially filled with coarser sandy components, and the cementation mainly occurs between these sandy components. (2) The glutenites generally exhibit low porosity, with minimal pore development within gravels, while the pores in sandy interstitial materials are more developed. The reservoir space is mainly composed of intercrystalline and secondary dissolution pores. (3) Diagenetic processes related to reservoir formation mainly occur within the coarse sandy interstitial materials between gravels, mainly involving aluminosilicate dissolution, which results in abundant dissolution pores. (4) In high-energy sedimentary microfacies, such as estuary bars and underwater distributary channels, reservoirs are more favorably developed, where the reservoir space is mainly associated with feldspar dissolution. Fractures and unconformities are the main channels for acidic fluid migration. (5) During the eodiagenesis, acidic fluids, mainly atmospheric water, infiltrated along unconformities, with more significant dissolution near the Beisantai arch. During the middle diagenetic period, dissolution was mainly attributed to organic acid. (6) Three types of reservoirs are developed in the glutenites: atmospheric acid dissolution reservoirs, organic acid dissolution reservoirs, and dual-source acid superimposed dissolution reservoirs. The distribution of these reservoir types determines the exploration strategies for oil and gas reservoirs of glutenites of the Upper Wuerhe Formation in the Fukang Sag of the Junggar Basin. Glutenites in the slope and sag areas and zones of superimposed fault development are the key objectives for oil and gas exploration of glutenite reservoirs of the Upper Wuerhe Formation in Fukang Sag.
- glutenite reservoir,
- reservoir development model,
- Upper Wuerhe Formation,
- Permian,
- Fukang Sag,
- Junggar Basin

Author TANG Yong is an Editorial Board Member of this journal, and he did not take part in peer review or decision making of this article.
The study was designed and revised by TANG Yong. Paper writing and experimental analysis were completed by YUAN Yunfeng, LI Hui, WANG Yafei, and QING Yuanhua. LÜ Zhengxiang participated in the writing of the paper and determined the experimental methods. The data collection and mapping were completed by LI Shubo, CHEN Hong, QIN Zhijun, WANG Qiuyu, and XIE Zhiyi. All authors have read the last version of the paper and consented to its submission.

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Glutenite reservoir characteristics and development model of Permian Upper Wuerhe Formation in Fukang Sag, Junggar Basin

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