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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
AAPG Bulletin, V.
DOI: 10.1306/0906171608017148
Petroleum resources in the Nanpu sag, Bohai Bay Basin, eastern China
Fujie Jiang,1 Xiongqi Pang,2 Longlong Li,3 Qiaochu Wang,4 Yuexia Dong,5 Tao Hu,6 Lijun Chen,7 Jian Chen,8 and Yingxun Wang9
1State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
2State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
3State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
4State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
5Jidong Oilfield Company, China National Petroleum Corporation (CNPC), Xinhua West Road 101, Lunan District, Tangshan, Hebei 063004, China; [email protected]
6State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
7Exploration and Development Institute, Zhanjiang Branch, China National Offshore Oil Corporation, Potou District, Zhanjiang, Guangdong 524057, China; [email protected]
8State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
9State Key Laboratory of Petroleum Resources and Prospecting, Fuxue Road 18, Changping District, Beijing 102249, China; present address: College of Geosciences, China University of Petroleum, Fuxue Road 18, Changping District, Beijing 102249, China; [email protected]
ABSTRACT
The Nanpu sag is an important secondary tectonic division of the Bohai Bay Basin and has an area of 1532 km2 (591 mi2), of which 1000 km2 (386 mi2) has been explored near Bohai. Recently, exploration has gradually shifted from continental to beach to shallow-marine settings, with significant exploration breakthroughs having occurred in the Nanpu 1, 2, and 3 tectonic belts, indicating good resource potential
. However, a systematic resource assessment has yet to be performed, which strongly restricts the exploration progress. In this study, we improved upon the Pareto model and reevaluated the area’s resource
potential
using two new methods. In one method, the traps are divided into several types, including structural, stratigraphic, and buried hill traps, to predict their individual resource
potential
and total resources of this area; in the other method, the normalized fluid
potential
is used to divide the area into several accumulation systems to calculate the resource
potential
. The Nanpu sag resources are estimated at 1.45 × 109 t (10.6 × 109 bbl), which represents an increase of approximately 2.70 × 108 t (19.8 × 108 bbl) compared with previous evaluations because of the increase in exploration maturity and information validation. The main residual resource is distributed in beach to shallow-marine settings. The stratigraphic and buried hill traps present better resource
potential
using the trap-type method. Such information can guide the direction of exploration and selection of
potential
traps.
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