|
|
|
| Gabon Basin Salt Characters and Its Influences on Pre-salt Oil and Gas Exploration |
| HUANG Xing-wen, HU Xiao-lin, GUO Yun, WANG Ke |
| China National Offshore Oil Corporation Research Institute, Beijing 100027, China |
|
|
|
|
Abstract Gabon Basin is a typical Atlantic passive margin salt basin, which is subdivided into pre-salt sequence and post-salt sequence by Aptian salt. Inspired by several giant pre-salt discoveries, such as Tupi, Franco, Libra in Brazil deep water, West Africa salt basins such as Gabon, Kwanza have attracted eyes from world major players in recent years. In order to solve pre-salt trap identification difficulties, we analyzed the lithological and petrophysical characters of Gabon salt and its influences on pre-salt imaging and seismic interpretation. Meanwhile, pre-salt in deep water Gabon is less-explored and thus pre-salt source and reservoirs characteristics are not clear. Considering heat conductivity, density and ductility character of salt, we analyzed pre-salt source rock maturity in Gabon deep water and salt influences on pre-salt source rock maturity based on basin modeling; we analyzed salt influences on pre-salt reservoir quality and pointed out deep water Gabon developed high quality pre-salt reservoirs by using new well data; we analyzed salt distribution, deformation and its influences on hydrocarbon charge and preservation, and pointed out that favorable pre-salt exploration areas and favorable areas for post-salt accumulations from pre-salt source. This paper may have some inspiration for other salt basin exploration.
|
|
Received: 11 January 2015
|
|
|
|
|
|
[1] 马君,刘剑平,潘校华,等. 西非被动大陆边缘构造演化特征及动力学背景[J].中国石油勘探,2008(3):60-64.
[2] Mounguengui M, Lang J, Guiraud M, et al. Sedimentary dynamics and structural geology of pre-rift deposits of the interior basin of Gabon[J]. Journal of African Earth Sciences, 2002,35:315-329.
[3] Teisserenc P, Villemin J. Sedimentary basin of Gabon-geology and oil Systems[M]//Edwards J D, Santogrossi P A. Divergent/Passive Margin Basin, Tulsa: AAPG, 1989:177-199.
[4] Edwards J D, Santogrossi P A.离散或被动大陆边缘盆地[M]. 梁绍全, 梁红, 张绍海译. AAPG论文集,2000,121-127.
[5] 刘东周,窦立荣, 郝银全,等.滨里海盆地东部盐下成藏主控因素及勘探思路[J]. 海相油气地质,2004, 19(1): 53-58.
[6] 王东旭,曾溅辉, 宫秀梅,等.膏盐岩层对油气成藏的影响[J]. 天然气地球科学,2005, 16(3):329-333.
[7] 赵振宇,周瑶琪, 马晓鸣,等. 含油气盆地中膏盐岩层对油气成藏的重要影响[J]. 石油与天然气地质,2007, 28(2):299-308.
[8] 梁杰,龚建明,成海燕. 墨西哥湾盐岩分布非油气成藏的控制作用响[J]. 海洋地质动态,2006, 26(1):25-29. |
| [1] |
XU Zhenyu, FANG Chaogang, TENG Long, WANG Lingyu. Geological characteristics of lacustrine shale oil and gas of Jinhua Formation in Upper Cretaceous in Jinqu Basin[J]. , 2017, 4(6): 9-14. |
| [2] |
XU Jianchun, WU Chengping, WANG Xin, WU Yun. Characteristics of source-reservoir-cap rock and hydrocarbon prospect evaluation in the South Yellow Sea[J]. , 2017, 4(5): 60-65. |
| [3] |
JIANG Ting, CHEN Gao-chao, SHI Ji-zhong, GUO Wang, XU Wei, ZHOU Jun-lin. Two Sets of Source Rocks Are Found for Carboniferous-Permian Petroleum Survey in Yining Basin, Xinjiang[J]. , 2015, 2(5): 8-13. |
| [4] |
FU Hong-bin, MA De-sheng, WU Tao, ZENG Yu-ren, GUO Hai, FAN Hong-fu. Organic Matter Characteristics of Source Rocks in Upper Jurassic Bailongbinghe Formation of the Guangmingco Area in North Qiangtang Basin, Tibet[J]. , 2015, 2(5): 45-51. |
| [5] |
HE Yong-zhong, CHEN Hou-guo, XIE Yuan, ZHAO Lei, ZHU Xun, YI Cheng-xing, AN Ya-yun. Discovery of Cambrian Carbonate Platform Margin Shoal in the Southeastern Margin of Upper Yangtze Platform and Its Geological Significance—Example from Shiqian-Cengong Area of Guizhou Province[J]. , 2015, 2(5): 38-44. |
| [6] |
LU Jin-cai, CHEN Gao-chao, LI Yu-hong, WEI Xian-yang, ZHAO Xing-min, DANG Ben, CHEN Jian-fa, WEI Jian-she, JIANG Ting, LIU Jian-li, BO Jian-jun, YANG Gao-yin, SHI Ji-zhong, HAN Wei, LI Wei. Main Progress and Achievements of the Permo-Carboniferous Petroleum Prospective Survey in Yine Basin and its Surrounding Areas[J]. , 2014, 1(2): 35-44. |
|
|
|
|
2015, Vol. 2 
