Geological factors contributing to high shale gas yield in the Wufeng-Longmaxi Fms of Sichuan Basin: A case study of Well JY6-2HF in Fuling shale gas field

被引：0
|
作者：
Nie H. [1 ,2 ,3 ]
Zhang B. [4 ]
Liu G. [1 ,2 ,3 ]
Yan C. [5 ]
Li D. [1 ,2 ,3 ]
Lu Z. [5 ]
Zhang G. [5 ]
机构：
[1] State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing
[2] Petroleum Exploration and Production Research Institute, SINOPEC, Beijing
[3] Key Laboratory of Shale Oil and Gas Exploration & Production, SINOPEC, Beijing
[4] Jianghan Oilfield Branch Company, SINOPEC, Qianjiang, 433124, Hubei
[5] School of Energy Resources, China University of Geosciences (Beijing), Beijing
来源：
| 1600年 / Editorial Department of Oil and Gas Geology卷 / 41期
关键词：
Graptolitic zone; Jiaoshiba; Shale gas; Sichuan Basin; Well JY6-2HF; Wufeng-Longmaxi Formations;
D O I：
10.11743/ogg20200303
中图分类号：
学科分类号：
摘要：
The great success of shale gas development in Fuling (the cumulative production of Well JY6-2HF has exceeded 300 million cubic meters) provides new enlightenment for the exploration and development of Wufeng-Longmaxi Formations' shale gas reservoir.The keys for the success are: (1) the Wufeng-Longmaxi Formations in Jiaoshiba area were deposited in deep water.The WF2-LM4 graptolitic zone shale is relatively thick, laying a better material basis for shale gas enrichment.(2) The lateral of Well JY6-2HF is mainly emplaced in WF2-LM4 graptolitic zone, which contains high-quality shale comparable to the "Lower Hot Shale" in Middle East-North Africa.Most of the laterals of shale gas wells in Weiyuan and Changning shale gas fields are also emplaced in this graptolitic zone, which is characterized by high total organic carbon content (TOC>3%) and high gas content (6.87-9.02 m3/t), and highly-developed organic pores (organic porosity>4%).Comprehensive analysis shows that under similar geological and engineering conditions, the wells with longer laterals emplaced in WF2-LM4 graptolitic zone generally have higher test production and estimated ultimate recovery (EUR).The research results are of referential value to the exploration and development of Wufeng-Longmaxi Formations' shale gas in Sichuan Basin and its periphery, and of the Silurian shale gas in other parts of the world. © 2020, OIL & GAS GEOLOGY Editorial Board. All right reserved.
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页码：463 / 473
页数：10
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