Distribution and evaluation of Oligocene source rocks in the east of central depression belt in deep-water area, Qiongdongnan Basin

被引：0

作者：

Wang, Zi-Song ^{[1
]}

Liu, Zhen ^{[1
,2
]}

Huang, Bao-Jia ^{[3
]}

Sun, Zhi-Peng ^{[3
]}

Yao, Zhe ^{[3
]}

Chen, Yu-Hang ^{[1
]}

Liu, Peng ^{[1
]}

Wang, Bing ^{[1
]}

机构：

[1] College of Geosciences, China University of Petroleum

[2] State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum

[3] Zhanjiang Branch of CNOOC Ltd.

来源：

Natural Gas Geoscience | 2014年 / 25卷 / 03期

关键词：

Deep-water area; Distribution characteristics; General evaluation; Oligocene; Qiongdongnan Basin; Source rocks; The Central Depression Belt;

D O I：

10.11764/j.issn.1672-1926.2014.03.0360

中图分类号：

学科分类号：

摘要：

Based on the prediction and determination of the distribution characteristics of thickness, maturity and organic facies of Oligocene source rocks in the east of Central Depression Belt, according to the calculation of the volume, gas generation quantity and intensity of source rocks, source rocks were comprehensively evaluated and the gas-rich sags were optimized. The results show: (1)Generally, Lingshui source rocks are thicker than those of Yacheng, and the percentages of mud in Ya-2 member and Ling-2 member are the most of all. The mud deposition centers evolved from west to east and from sporadic distribution in Yacheng Formation to regional distribution in Lingshui Formation; (2)The thermal evolution of source rocks was early in the west and late in the east, and the modern maturities of different formations are high in the west and low in the east; (3)The quality of Oligocene source rocks is better in general, in which the coal layer is excellent in gas generation capacity, and the gas generation capacity of mud is from moderate to good. The main organic facies in Yacheng Formation are shallow sea and shore, but the main organic facies in Lingshui Formation are inner and outer shallow sea; (4)Baodao Sag, Changchang Sag and Songnan Sag are all gas-rich sags. However, Baodao Sag is the best, follows by the Changchang Sag, and then by the Songnan Sag.

引用

页码：360 / 371

页数：11

共 28 条

[1]

Li X., Wang C., Jin W., Et al., A review on deep-sea sedimentation theory: Significances to oil-gas exploration, Acta Sedimentologica Sinica, 27, 1, pp. 77-86, (2009)

[2]

Lei C., Ren J., Li X., Et al., Structural characteristics and petroleum exploration potential in the deep-water area of the Qiongdongnan Basin, South China Sea, Petroleum Exploration and Development, 38, 5, pp. 560-569, (2011)

[3]

Lin W., Zhou Y., Progress of deep water hydrocarbon exploration worldwide and the exploration in the deepwater region of northern South China Sea, Geophysical Prospecting for Petroleum, 48, 6, pp. 601-620, (2009)

[4]

Wang Z., Li X., Sun Z., Et al., Hydrocarbon accumulation conditions and exploration potential in the deep-water region, Qiongdongnan Basin, China Offshore Oil and Gas, 23, 1, pp. 7-13, (2011)

[5]

Liu Z., Chang M., Zhao Y., Et al., Method of early prediction on source rocks in basins with low exploration activity, Earth Science Frontiers, 14, 4, pp. 159-167, (2007)

[6]

Xu H., Cai D., Sun Z., Et al., Filling characters of central submarine canyon of Qiongdongnan Basin and its significance of petroleum geology, Acta Geologica Sinica, 86, 4, pp. 641-650, (2012)

[7]

Gong Z., The Super Oil and Gas Fields in Offshore of China, pp. 167-172, (1997)

[8]

Tao W., He S., Zhao Z., Et al., Reservoir distribution in deepwater area of the Qiongdongnan Basin, Petroleum Geology & Experiment, 28, 6, pp. 554-559

[9]

Zhao M., Zhang X., Ji L., Et al., Characteristics of tectonic evolution in the Qiongdongnan Basin and brief discussion about its controlling on reservoirs, Natural Gas Geoscience, 21, 3, pp. 494-502, (2010)

[10]

Zhang G., Tectonic evolution of deepwater area of northern continental marginin South China Sea, Acta Petrolei Sinica, 31, 4, pp. 528-533, (2010)

← 1 2 3 →