About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
AAPG Bulletin, V.
2007. The American Association of Petroleum Geologists. All rights reserved.
DOI:10.1306/11030606062
The Puguang gas field: New giant discovery in the mature Sichuan Basin, southwest China
Yongsheng Ma,1 Xusheng Guo,2 Tonglou Guo,3 Rui Huang,4 Xunyu Cai,5 Guoxiong Li6
1Southern Exploration and Production Co., China Petroleum and Chemical Corporation (SINOPEC), Kunming, Yunnan 650200, China; [email protected]
2Southern Exploration and Production Co., China Petroleum and Chemical Corporation (SINOPEC), Kunming, Yunnan 650200, China
3Southern Exploration and Production Co., China Petroleum and Chemical Corporation (SINOPEC), Kunming, Yunnan 650200, China; [email protected]
4Southern Exploration and Production Co., China Petroleum and Chemical Corporation (SINOPEC), Kunming, Yunnan 650200, China
5Institute of Southern EP Company, SINOPEC, Kunming 650200, China
6Southern Exploration and Production Co., China Petroleum and Chemical Corporation (SINOPEC), Kunming, Yunnan 650200, China; [email protected]
ABSTRACT
The giant Puguang gas field, with a proven original in-place gas volume of 350 109 m3 (12.36 TCFG), was discovered in 2003 in the eastern Sichuan fold-thrust belt of the mature Sichuan Basin, southwest China. The field is a combination structural-stratigraphic trap closed by lateral depositional change and fault closure. The trap evolved from a paleo-oil reservoir originating in the Triassic–Jurassic. The entrapment of thermal gas, which was derived from Lower–middle Silurian and Permian source rocks, occurred during deep burial in the Jurassic–Cretaceous. Tertiary–Quaternary compression transformed the paleotrap into the present gas reservoir. Gas is contained in the Lower Triassic Feixianguan and the Upper Permian Changxing reservoirs, which consist predominantly of dolomitized oolites deposited in shelf and platform-margin shoal and backreef environments. Reservoir quality is characterized by porosity of 1–29% and permeability of 0.01–9664 md, with buried
depth
greater than 5000 m (16,400 ft).
The discovery of the Puguang field exemplifies the successful application of a new play concept and new technology in a mature basin. The discovery resulted from a shift in exploration strategy from structures to stratigraphic traps in reef and shoal dolomites and benefited from advanced high-resolution seismic techniques. The discovery will not only broaden the exploration scope in the Sichuan Basin, but also provide an excellent analog for exploration in other fold-thrust belts worldwide.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |
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].