About This Item
This article has been peer-reviewed and accepted for publication in a future issue of the AAPG Bulletin. This abstract and associated PDF document are based on the authors' accepted "as is" manuscript.
Editorial Policy for Ahead of Print
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Cite This Item
Share This Item
The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Ahead of Print Abstract
AAPG Bulletin, Preliminary version published online
Copyright © 2025. The American Association of Petroleum Geologists. All rights reserved.
DOI:10.1306/08122524082
Formation, preservation and release of overpressure in shale gas reservoirs
Qing He12 , Tian Dong1 , Matthew Steele-MacInnis2 , Zhiliang He1 , and Dongfeng Hu3
1 Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China
2 Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
3 Sinopec Exploration Branch Company, Chengdu, Sichuan 610041, China
Ahead of Print Abstract
normal
(~hydrostatic) pressure, or significant overpressures (>hydrostatic). The question is, in the case of the presently normal-pressured shales, did these rocks never experience fluid overpressure, or did overpressure develop but then dissipate? And, if the latter, then when and why was pressure lost? We report detailed evidence that both the presently overpressured and normal-pressured shales consistently record an early (120-106 Ma) stage of high fluid overpressure, >70 % of the lithostatic load, caused by gas generation during deep burial. The pressure regime then later diverged during subsequent uplift, as the currently normal-pressured rocks underwent faster pressure release because of rapid uplift during the late Yanshanian orogeny, whereas the presently overpressured rocks experienced more gradual uplift that favored preservation of high fluid pressures. Our results demonstrate that the fluid inclusions hosted in shale fracture veins directly record the fluid pressure
changes in shale layers, providing more intuitive insight into the dynamic evolution of shale gas generation and accumulation.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
| Watermarked PDF Document: $16 | |
| Open PDF Document: $28 |
AAPG Member?
Please login with your Member username and password.
Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].