龙门山系山前带北段超晚期断褶构造与油气远景

doi:10.3863/j.issn.1000-2634.2001.02.002

西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (2): 5-8(39.DOI: 10.3863/j.issn.1000-2634.2001.02.002

龙门山系山前带北段超晚期断褶构造与油气远景

胡受权¹ 郭文平¹ 童崇光²

1.中山大学地球科学系,广东广州 510275;2.成都理工学院石油系,四川成都 610059

收稿日期:2000-07-10 修回日期:1900-01-01 出版日期:2001-04-20 发布日期:2001-04-20
通讯作者: 胡受权

THE LATEST FAULT-FOLD STRUCTURE AND PETROLEUM PROSPECT IN THE NORTHERN FOOTHILL BELT OF LONGMEN MOUNTAIN SYSTEM

HU Shou-quan¹ GUO Wen-ping¹ TONG Chong-guang²

Zhongshan University ,China

Received:2000-07-10 Revised:1900-01-01 Online:2001-04-20 Published:2001-04-20
Contact: HU Shou-quan

摘要/Abstract

摘要： 龙门山系属上扬子地台内晚中新生代断褶构造活动形成的山系。川西断陷区属龙门山系的前陆盆地,是地台型海相沉积与前陆型陆相沉积组成的复合型含油气区。超晚期(N-Q)断褶构造的发育程度控制了龙门山系山前带构造圈闭的发育和裂缝型气藏的形成。印支晚期形成的天井山古隆起因受强烈的超晚期断褶构造活动的影响,使原有的油气藏遭到破坏。天井山古隆起北东倾伏端的广元昭化地区,发育隐伏断裂系伴生的背斜群,是较理想的油气聚集带;而天井山古隆起西南倾伏端的绵阳-江油-安县地区,为北东向及北西向深断裂交叉复合区,是寻找中、浅层次生气藏的有利地区。

关键词: 龙门山系, 山前带, 超晚期断褶构造, 古隆起, 隐伏断褶带, 构造发育程度, 油气远景

Abstract: The formation of Longmen mountain system is duo to the faulting-folding on the Upper Yangtz platform in late Mesozoic-Cenozoic. The western Sichuan fault-depression belongingb to the foreland basin of Longmen mountain system is a composite oil-gas province that consists of platform-type marine sediment and foreland-type continental deposit. The maturity of latest (NQ) fault-fold structure controls the development of structural traps in the foothill belt and the formation of fissured gas pools. Oil and gas accumulations on the Tianjingshan paleo-uplift formed in late Indosinian were destroyed as a result of intensive activities of the latest faulting-folding. Zhaohua area in Guangyuan county, at the NE pinching end of Tianjingshan paleo-uplift, is a favorable oil-gas accumulation belt because there developed a buried fault system and its accompanying fold group. And MianyangJiangyouAnxian area, at the SW pinching end of Tianjingshan paleo- uplift, is a favorable district to
prospect middle and shallow secondary gas-pools as where is the conjunction of NE-trending and NW-trending deep faults.

Key words: longmen mountain system, foothill belt, latest fault-fold structure, buried fault-fold belt, structural maturity

中图分类号:

TE121.2

胡受权郭文平童崇光. 龙门山系山前带北段超晚期断褶构造与油气远景 [J]. 西南石油大学学报(自然科学版), 2001, 23(2): 5-8(39.

HU Shou-quan GUO Wen-ping TONG Chong-guang. THE LATEST FAULT-FOLD STRUCTURE AND PETROLEUM PROSPECT IN THE NORTHERN FOOTHILL BELT OF LONGMEN MOUNTAIN SYSTEM[J]. 西南石油大学学报(自然科学版), 2001, 23(2): 5-8(39.

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龙门山系山前带北段超晚期断褶构造与油气远景

THE LATEST FAULT-FOLD STRUCTURE AND PETROLEUM PROSPECT IN THE NORTHERN FOOTHILL BELT OF LONGMEN MOUNTAIN SYSTEM

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