Restoration of paleokarst geomorphology of Sinian Dengying Formation in Sichuan Basin and its significance, SW China

被引：32

作者：

Liu Hong ^{[1
,2
,3
]}

Luo Sicong ^{[1
,2
,3
]}

Tan Xiucheng ^{[3
]}

Li Ling ^{[3
,4
]}

Lian Chengbo ^{[3
,4
]}

Zeng Wei ^{[3
,4
]}

Luo Bing ^{[4
,5
]}

Shan Shujiao ^{[5
]}

机构：

[1] Key Lab Oil & Gas Geol Sichuan Prov, Chengdu 610500, Peoples R China

[2] Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Peoples R China

[3] PetroChina Key Lab Carbonate Reservoir, Branch Deposit & Accumulat, Chengdu 610500, Peoples R China

[4] State Key Lab Oil & Gas Geol & Exploitat, Chengdu 610500, Peoples R China

[5] PetroChina Southwest Oil & Gas Field Co, Res Inst Petr Explorat & Dev, Chengdu 610500, Peoples R China

来源：

PETROLEUM EXPLORATION AND DEVELOPMENT | 2015年 / 42卷 / 03期

基金：

中国国家自然科学基金;

关键词：

paleogeomorphologic restoration; moldic method; weathering crust paleokarst; karst reservoir; paleogeographic framework; Sinian Dengying Formation; Sichuan Basin;

D O I：

10.1016/S1876-3804(15)30021-5

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Based on newly drilled well data in the Gaoshiti area in the central Sichuan Basin, profile data of more than 150 field outcrops of the regional geological survey, and stratigraphic division and correlation of more than 30 wells in the Sichuan Basin and its adjacent areas, combined with regional seismic data, moldic methods are comprehensively used to restore the karst paleogeomorphy of the Dengying Formation, and thus studying the paleogeographic pattern and the significance of oil and gas exploration. The Sichuan Basin was surrounded by paleo-lands/underwater highlands in the late Sininan Dengying period, including Kangdian paleo-land in the west, Songpan paleo-land in the northwest, Hannan paleo-land in the north, Qianjiang-Zheng'an, Zhenba and Wuxi-Jianshi underwater highlands in the southeast and northeast. The Sichuan Basin was adjacent to Jiangnan Basin southeastwards and Qinling paleo-ocean northeastwards respectively. Affected by the separation of NS-striking Zitong-Junlian Aulacogen, NE-striking Langzhong-Tongjiang and Chongqing-Kaixian depressions in this basin, the Sichuan Basin presents the NS-trending framework of "three uplifts (Zhenba, Chuanzhong and Qianjiang-Zheng'an) and two depressions (Langzhong-Tongjiang and Chongqing-Kaixian)", and is divided into two relatively isolated EW-trending paleo-uplift systems (NS-striking Mianyang-Leshan-Xichang paleo-uplift and nearly NE-striking Chuanzhong paleo-uplift). Controlled by karst paleogeomorphy of the Sinian Dengying Formation, the pattern of karst landscape consists of five secondary geomorphic units, such as karst highland, karst platform, karst slope, karst depression and karst basin, of which the karst platform and karst slope are the favorable zones for the development of karst reservoirs, providing advantages for the formation of large gas fields.

引用

页码：311 / 322

页数：12

共 28 条

[1]

Li L., Tan X., Zeng W., Et al., Development and reservoir significance of mud mounds in Sinian Dengying Formation, Sichuan Basin, Petroleum Exploration and Development, 40, 6, pp. 666-672, (2013)

[2]

Tian X., Hu G., Li W., Et al., Geochemical characteristics and significance of Sinian reservoir bitumen in Leshan-Longnüsi Paleo-uplift Area, Sichuan Basin, Natural Gas Geosciences, 24, 5, pp. 982-990, (2013)

[3]

Hu D., Petroleum geology of China: Vol. 10: Oil-gas field in Sichuan, (1987)

[4]

Tong C., Structural evolution and petroleum accumulation of Sichuan Basin, (1992)

[5]

Liu Y., Chang X., Modeling of burial and subsidence history in Sichuan Basin, Chinese Journal of Geophysics, 46, 2, pp. 203-208, (2003)

[6]

Guo Z., Deng K., Han Y., The formation and evolution of Sichuan Basin, (1996)

[7]

Regional geology in Sichuan Basin, (1991)

[8]

Stratigraphic guide of China and its instructions, (2001)

[9]

Yuan H., The tectonic evolution of Leshan-Longnüsi paleo-uplift and its controlling effects upon gas reservoir forming in Sinian strata, (2012)

[10]

Li Y., He D., Wen Z., Palaeogeography and tectonic-depositional environment evolution of the Late Sinian in Sichuan Basin and adjacent areas, Journal of Palaeogeography, 15, 2, pp. 231-245, (2013)

← 1 2 3 →