印度尼西亚西纳土纳盆地油气地质特征与分布规律

倪仕琪; 王志欣; 刘凤鸣; 庞萌; 张志宇; 潘志鸿

doi:10.16028/j.1009-2722.2017.02004

印度尼西亚西纳土纳盆地油气地质特征与分布规律

中国石油大学(北京)地球科学学院，北京 102249；中国石油大学(北京)油气资源与探测国家重点实验室，北京 102249

基金项目:
国土资源部油气资源战略中心“全球重点地区能源数据库建设项目”(12120115068801)

详细信息

作者简介: 倪仕琪(1992—)，男，在读硕士，主要从事海外油气勘探、石油地质综合研究与资源评价工作. E-mail:cjdxnsq@sina.cn

通讯作者: 王志欣(1963—)，男，博士，高级工程师，主要从事含油气盆地分析和油气资源评价方面的研究工作. E-mail:wzx.bj@sina.com

中图分类号: TE121.1

收稿日期: 2016-09-17

刊出日期: 2017-02-28

GEOLOGICAL CHARACTERISTICS AND DISTRIBUTION PATTERN OF PETROLEUM IN WEST NATUNA BASIN, INDONESIA

College of Geosciences, China University of Petroleum, Beijing 102249, China; State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China

More Information

Corresponding author: Wang Zhixin, wzx.bj@sina.com

Received Date: 17 September 2016

Publish Date: 28 February 2017

摘要

摘要:
西纳土纳盆地是发育在东南亚巽他克拉通内的裂谷盆地，也是印度尼西亚重要的含油气盆地。运用盆地分析及石油地质学的理论与方法，对盆地构造—沉积演化及主力烃源岩、储集层及盖层等成藏要素进行综合研究，系统总结油气成藏特征及分布规律，并通过对比分析指出构造演化与沉积充填差异是造成盆地内烃源岩演化、储集层发育、油气成藏特征差异的主控因素。研究表明，油气可采储量区域上集中在Anambas地堑和Penyu次盆东北部，主要油气田(藏)类型包括挤压背斜、披覆构造和地层—构造型；层系上，油气主要储集于上渐新统和下中新统。盆地内远景地层圈闭以上始新统—下渐新统Belut组冲积扇相砂砾岩和上渐新统—下中新统Gabus—下Arang组河流下切谷砂岩为有利储层，勘探程度低，资源潜力较大。
- 印度尼西亚 /
- 西纳土纳盆地 /
- 油气地质 /
- 油气分布规律 /
- 勘探潜力
Abstract:
The West Natuna Basin, an intracratonic rifted basin on the northern Sunda Shelf, is an important petroliferous basin in Indonesia. Following the principles of basin analysis and petroleum geology, taking the tectonic evolution and sedimentary filling history of the whole basin as the major theme, we studied in this paper the forming mechanism of petroleum accumulation, such as source rocks, reservoirs and seals, in the basin. The hydrocarbon distribution and accumulation patterns were systematically summarized. Through comparison, it is concluded that the difference of tectonic evolution and sedimentary filling is the controlling factor over the difference in source maturity, reservoirs and hydrocarbon accumulation characteristics in the basin. Regionally, the discovered oil and gas reserves are largely confined to the Anambas Graben and the Northeastern Penyu Sub-basin and trapped in compressional anticlines, draping structures and structure-stratigraphic traps. Stratigraphically, the oil and gas are mostly reserved in the Upper Oligocene and Lower Miocene. Future exploration potential may exist in the under explored stratigraphic traps in the coarse grained alluvial fan deposits of the Belut Formation and incised valley fills of the Gabus Formation and Lower Arang Formation.
- Indonesia /
- West Natuna Basin /
- petroleum geology /
- hydrocarbon distribution /
- exploration potential

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图 1 西纳土纳盆地位置及构造分区(据文献[1, 2]修改)

Figure 1.

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图 2 西纳土纳盆地地层综合柱状图(据文献[1, 18]修改)

Figure 2.

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图 3 西纳土纳盆地构造剖面及其Belut组主力烃源岩分布特征图

Figure 3.

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图 4 西纳土纳盆地油气成藏模式(据文献[20]修改)

Figure 4.

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图 5 西纳土纳盆地不同构造单元油气储量区域分布

Figure 5.

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图 6 西纳土纳盆地油气储量层系分布

Figure 6.

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图 7 西纳土纳盆地不同构造单元油气层系分布(据文献[1, 2]修改)

Figure 7.

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表 1 西纳土纳盆地构造单元间油气成藏特征

Table 1. Hydrocarbon accumulation characteristics of different tectonic units in the West Natuna Basin

油气聚集带	构造运动强度	圈闭类型	圈闭规模	运移距离	运移通道
Anambas地堑北部和东北部	受中新世反转运动影响强烈，常发育正反转断层，断距大	构造型：挤压背斜、断背斜圈闭类型单一，数量少，规模小	圈闭类型单一，数量少，规模小	本地生烃，运移距离短	边界断层，输导层
AAnambas地堑中部和南部	受中新世反转运动影响，断层部分反转，断距较小，走滑断层活动明显	构造型：挤压背斜、断背斜、断层/断块；地层—构造型	圈闭类型多样，数量多，规模较大	本地生烃，运移距离较长	边界断层，输导层，走滑断层
Penyu次盆东北部	受中新世反转运动影响较弱，断层部分反转或不反转，断距小	构造型：披覆背斜、挤压背斜、断背斜；地层—构造型	圈闭类型多样，数量较多，规模大	异地生烃，运移距离长	输导层

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