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世界地质 2023, 42(3) 536-544 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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| 基础地质 |
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源上和源外斜坡区断砂组合输导油气特征差异性研究: 以松辽和渤海湾盆地为例 |
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王彪 |
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大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712 |
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摘要：
为了研究富油气凹陷源上和源外斜坡区油气分布特征? 明确分布规律, 以源上和源外斜坡区油 气成藏模式及运移通道研究为基础, 通过对松辽和渤海湾盆地源上和源外斜坡区油气分布与断砂组合 输导模式之间关系的实例分析, 对源上和源外斜坡区断砂组合输导油气的差异特征进行了研究, 结果 表明: 源上和源外斜坡区断砂组合输导油气特征差异性主要表现在以下 3 个方面: ①断砂组合输导油 气方向的差异性, 源上区断砂组合输导油气方向为先垂向后侧向, 以垂向为主; 而源外斜坡区断砂组 合输导油气方向为侧向, 断裂仅起侧接作用? ②断砂组合输导油气剖面形式的差异性, 源上区断砂组 合输导油气剖面形式主要有牙刷状和树枝状 2 种; 而源外斜坡区断砂组合输导油气剖面形式主要有同 层阶梯状和跨层阶梯状 2 种? ③断砂组合输导油气平面形式的差异性, 源上区断砂组合输导油气平面 形式为始于断裂的线状; 源外斜坡区断砂组合输导油气平面形式为穿过断裂的线状? |
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关键词：
源上区
源外斜坡区
断砂组合
油气输导特征差异性
松辽盆地
渤海湾盆地
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Research on differences about oil and gas transportation characteristics by fault?sandbody configuration between areas above source and slope areas outside source: examples of Songliao and Bohai Bay Basin |
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WANG Biao |
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Exploration and Development Research Institute of Daqing Oilfield Company Ltd., Daqing 163712, Heilongjiang, China |
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Abstract:
In order to determine hydrocarbon distribution characteristics and rules between areas above source and slope areas outside source, the differences about oil and gas transportation by fault?sandbody configuration of two areas were studied by analysis of relationship between hydrocarbon distribution and transportation forms by fault? sandbody configuration, which is based on hydrocarbon accumulation model and transportation channel of two areas in Songliao and Bohai Bay Basin. The results show that there are three aspects about differences of oil and gas transportation by fault?sandbody configuration. The first difference is migration direction. The direction of hydrocar? bon migration by fault?sandbody configuration in the areas above source is from vertical to lateral. The vertical di? rection is dominant. In the slope areas outside source, the direction is lateral and fault only plays a side connection role. The second difference is profile form of oil and gas transportation by fault?sandbody configuration. There are two main forms of oil and gas transportation by fault?sandbody configuration in profile in the areas above the source, which are toothbrush and branch shape. The slope areas outside source also has two transportation forms in profile, which are stair shape in the same layer and cross?layer. The third difference is plane form of oil and gas transporta? tion by fault?sandbody configuration. The form of oil and gas transportation by fault?sandbody configuration on the plane in the areas above source is linear from fault, however it is linear cutting fault in slope areas outside source. |
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Keywords:
area above source
slope area outside source
fault?sandbody configuration
difference about oil and gas transportation characteristic
Songliao Basin
Bohai Bay Basin
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