断裂控藏作用定量评价及有利区预测——以辽河坳陷齐家-鸳鸯沟地区古近系沙河街组三段上亚段为例

doi:10.11743/ogg20130611

石油与天然气地质 ›› 2013, Vol. 34 ›› Issue (6): 790-796.doi: 10.11743/ogg20130611

断裂控藏作用定量评价及有利区预测——以辽河坳陷齐家-鸳鸯沟地区古近系沙河街组三段上亚段为例

孙同文¹, 吕延防¹, 刘哲¹, 付广¹, 孙永河¹, 张东伟²

1. 东北石油大学地球科学学院, 黑龙江大庆 163318;
2. 中国石油辽河油田勘探开发研究院, 辽宁盘锦 124000

收稿日期:2012-09-18 修回日期:2013-10-11 出版日期:2013-12-08 发布日期:2014-01-04
作者简介:孙同文（1984- ），男，博士研究生，油气运移与保存。E-mail：stwpetrolchina@126.com。
基金资助:
国家自然科学基金项目（41372153）；国家大型油气田及煤层气开发科技重大专项（2011ZX05007-002）。

Quantitative evaluation of control of faults on hydrocarbon accumulation and play fairway prediction：a case from Es³⁽¹⁾ in Qijia-Yuanyanggou area, the Liaohe Depression

Sun Tongwen¹, Lv Yanfan¹, Liu Zhe¹, Fu Guang¹, Sun Yonghe¹, Zhang Dongwei²

1. College of Geosciences, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
2. Research Institute of Petroleum Exploration & Development, Liaohe Oilfield Company of CNPC, Panjin, Liaoning 124000, China

Received:2012-09-18 Revised:2013-10-11 Online:2013-12-08 Published:2014-01-04

摘要/Abstract

摘要： 为搞清断裂对辽河坳陷齐家-鸳鸯沟地区古近系沙河街组三段上亚段油气成藏的控制规律，在断裂系统详细划分的基础上厘定了油源断裂，并分别应用SGR方法和断裂活动速率对断层圈闭侧向封闭能力和成藏期后断裂活动强度进行了定量评价。结果表明，断裂对油气成藏的控制主要表现在3个方面：①油源断裂控制油气的聚集部位；②断裂侧向封闭能力控制了断层圈闭油气充满程度；③成藏期后断裂活动强度控制先期聚集油气的保存程度。综合以上研究，建立了有利目标优选标准，认为在油源充足、储层物性较好的情况下，两条以上油源断裂控圈，圈闭充满程度大于50%，并且成藏期后活动速率小于2m/Ma的断层圈闭为Ⅰ类圈闭，钻探风险最小；次之为Ⅱ类和Ⅲ类圈闭。最终预测出2个Ⅰ类圈闭和1个Ⅱ类圈闭，为古近系沙河街组三段上亚段下一步钻探预测新增含油面积5.8 km²。

关键词: 侧向封闭能力, 断裂活动强度, 油源断裂, 有利区域, 沙三上亚段, 齐家-鸳鸯沟地区, 辽河坳陷

Abstract: In order to understand the control of faults on hydrocarbon accumulation in the Paleogene Shahejie Fm(Es³⁽¹⁾)in Qijia-Yuanyanggou area,the Liaohe Depression,source rock-rooted faults were identified on the basis of fault system division.In addition,the SGR method and fault growth rate were applied respectively to quantitatively evaluate the lateral sealing capacity of fault traps and the fault activity intensity after hydrocarbon accumulation period.The results show that the control of faults on hydrocarbon accumulation is depicted mainly in the following three aspects.Firstly,the oil source-rooted faults control the locations of hydrocarbon accumulation;secondly,the lateral sealing capacity of faults controls fullness of the fault traps;and thirdly,the fault activity intensity after hydrocarbon accumulation period controls the preservation of pre-existing oil and gas.Based on the above studies,criteria for selection of favorable targets were established.When oil sources are sufficient and reservoir physical properties are good,class-Ⅰ trap is defined as fault traps under the control of two or more source rock-rooted faults,having a hydrocarbon fullness greater than 50% and fault activity intensity(after hydrocarbon accumulation period)less than 2m/Ma.Drilling risk of class-Ⅰ is minimum,followed by class-Ⅱ and class-Ⅲ traps.Finally,two class-Ⅰ traps and one class-Ⅱ trap were mapped,and the oil-bearing area of Es³⁽¹⁾ in these traps is 5.8 km²

Key words: lateral sealing capacity, fault activity intensity, source rock-rooted fault, play fairway, Es³⁽¹⁾, Qijia-Yuanyanggou area, Liaohe Depression

中图分类号:

TE122.3

孙同文,吕延防,刘哲,等. 断裂控藏作用定量评价及有利区预测——以辽河坳陷齐家-鸳鸯沟地区古近系沙河街组三段上亚段为例[J]. 石油与天然气地质, 2013, 34(6): 790-796. doi: 10.11743/ogg20130611 Sun Tongwen,Lv Yanfan,Liu Zhe,et al. Quantitative evaluation of control of faults on hydrocarbon accumulation and play fairway prediction：a case from Es³⁽¹⁾ in Qijia-Yuanyanggou area, the Liaohe Depression[J]. Oil & Gas Geology, 2013, 34(6): 790-796. doi: 10.11743/ogg20130611

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断裂控藏作用定量评价及有利区预测——以辽河坳陷齐家-鸳鸯沟地区古近系沙河街组三段上亚段为例

Quantitative evaluation of control of faults on hydrocarbon accumulation and play fairway prediction：a case from Es³⁽¹⁾ in Qijia-Yuanyanggou area, the Liaohe Depression

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Quantitative evaluation of control of faults on hydrocarbon accumulation and play fairway prediction：a case from Es³⁽¹⁾ in Qijia-Yuanyanggou area, the Liaohe Depression