西北沙巴盆地油气成藏模式及勘探方向

马良涛; 李世雄

西北沙巴盆地油气成藏模式及勘探方向

马良涛^{1, 2,},
李世雄^3,

1.
中国海洋石油总公司研究总院, 北京 100027
2.
中国地质大学(北京)博士后流动站, 北京 100083
3.
长江大学地球科学学院, 武汉 430100

基金项目:

国家重大专项30-1课题 2008ZX05030-001-04

详细信息

作者简介:
马良涛, 男, 博士生, 主要从事层序、沉积、储层及石油地质等领域研究。E-mail:maliangtao123@163.com

通讯作者:
李世雄, 男, 长江大学地球科学学院, 主要从事构造地质学和沉积石油地质研究

中图分类号: TE122.3
计量
- 文章访问数: 159
- HTML全文浏览量: 93
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2014-06-22
- 刊出日期: 2014-12-01

HYDROCARBON ACCUMULATION MODEL AND FUTURE EXPLORATION IN NORTHWEST SABAH BASIN

MA Liang-tao^{1, 2
,},
LI Shi-xiong^3
,

1.
Research Institute, China National Offshore Oil Corporation, Beijing 100027, China
2.
Postdoctoral Center, China University of Geosciences, Beijing 100083, China
3.
College of Geosciences, Yangtze University, Wuhan 430100, China

摘要

摘要: 以油气地质理论为指导, 在构造、沉积、石油地质特征分析基础上, 从典型油气藏解剖入手, 构建了西北沙巴盆地3种类型的油气成藏模式, 即岩性型、地层型和滚动背斜型油气成藏模式。盆地经历了裂谷期、挤压反转期和拗陷期3个演化阶段, 发育Stage Ⅰ、StageⅡ、StageⅢ、StageⅣ等4套新生代沉积地层。盆地以StageⅣ泥/页岩为主要烃源岩; 有利储集层为由StageⅣC、StageⅣD、StageⅣE砂岩构成的上砂岩单元、由StageⅣA砂岩构成的下砂岩单元及StageⅣC/ⅣD地层滑塌形成的深水浊积砂体; 空间配置方面, 烃源岩与储集体平面相接、空间叠置, 为油气运移成藏提供了有利条件。通过油气富集条件及分布规律的综合分析, 认为"内带"构造区的地层油气藏及"外带"构造区的岩性油气藏是盆地未来的油气勘探重点。
- 西北沙巴盆地 /
- 油气成藏要素 /
- 成藏模式 /
- 有利勘探区
Abstract: Guided by hydrocarbon geological theory, through typical reservoir dissecting, it identifies the features of Northwest Sabah Basin reservoir. The result shows that three different hydrocarbon accumulation patterns can be built based on the research for characteristic of structure, sedimentary formation and petroleum geology. They are lithologic, stratigraphic and rollover anticline type, respectively. The basin tectonic evolution involved rift, compression and inverse stage, depression stages and it developed four Cenozoic formations: Stage Ⅰ, StageⅡ, StageⅢ, StageⅣ. Mudstones and shales in the StageⅣ are the main source rocks. The pretty reservoir is provided by the Stage ⅠVA Lower Sandstone Unit, Stage ⅣC, ⅣD and ⅣE Upper Sandstone Unit and Stage ⅣC/ⅣD slump turbidite fan. Three reservoir-seal combinations, called lower, upper, deep-water turbidite fan combinations, are identified in basin. It builds three hydrocarbon accumulation models, named Updip sandstone pinchout, Unconformity and Rolling anticline type which distribute in different tectonic area in this basin. The fundamental conditions of hydrocarbon accumulation are analyzed. It shows that hydrocarbon source rocks and reservoir contacting each other in the plane and superimposing in the space provides favorable conditions for hydrocarbon migration and accumulation. Based on the above analysis, it suggests that stratigraphic reservoir in Inboard belt and lithologic reservoir in Outboard belt will be the future exploration targets for basin.
- Northwest Sabah Basin /
- elements of hydrocarbon accumulation /
- hydrocarbon accumulation pattern /
- favorable exploration zone

HTML全文

图 1 西北沙巴盆地构造要素^[2]

Figure 1. Structural elements of the Northwest Sabah Basin

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图 2 西北沙巴大陆边缘演化^[3]

Figure 2. Schematic sections showing evolution of the northwestern Sabah continental margin

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图 3 西北沙巴盆地综合地层图

Figure 3. Stratigraphic chart for the Northwest Sabah Basin

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图 4 氢指数与岩石热裂解峰温(T_max)交会图^[4]

Figure 4. Hydrogen index VS pyrolysis Tmax cross-plots

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图 5 西北沙巴盆地油气成藏事件

Figure 5. Hydrocarbon accumulation events in the Northwest Sabah Basin

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图 6 岩性型油气成藏模式(据文献[7]修改)

Figure 6. Lithologic hydrocarbon accumulation pattern

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图 7 地层型油气成藏模式(据文献[4]修改)

Figure 7. Stratigraphic hydrocarbon accumulation pattern

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图 8 滚动背斜型油气成藏模式(据文献[6]修改)

Figure 8. Rollover anticline hydrocarbon accumulation pattern

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