应力场数值模拟与油藏有利区预测-以松辽盆地乾安地区归字井青三段为例

吴林强; 刘成林; 李冰; 汪紫菱

应力场数值模拟与油藏有利区预测-以松辽盆地乾安地区归字井青三段为例

1.
中国石油大学地球科学学院, 北京 102249
2.
中国地质科学院地质力学研究所, 北京 100081

基金项目:

国土资源部公益性行业科研专项"松辽盆地泥页岩油气形成机制和分布规律研究" 201211051-03

详细信息

作者简介:
吴林强(1988-), 男, 江西上饶人, 硕士研究生, 主要研究方向油气成藏及储层表征。E-mail:qiuque1988@163.com

中图分类号: P553;TE122.1
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- 文章访问数: 253
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- PDF下载量: 17
- 被引次数: 0
出版历程
- 收稿日期: 2014-05-26
- 刊出日期: 2014-12-01

NUMERICAL SIMULATION OF TECTONIC STRESS FIELD AND PREDICTION OF OIL-FAVORED AREAS: A CASE STUDY OF THE THIRD MEMBER OF QINGSHANKOU FORMATION IN GUIZIJING REGION OF QIAN'AN AREA, SONGLIAO BASIN

1.
College of Geosciences, China University of Petroleum, Beijing 102249, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

摘要

摘要: 构造应力场在油气运聚成藏中具有重要的作用。明水组沉积末期是松辽盆地乾安地区高台子油层的一个主要成藏期, 期间烃源岩的生、排烃高峰与大规模油气运聚和圈闭的形成在时间上具良好的匹配关系。利用ANSYS有限元模拟软件, 对归字井地区明水组沉积末期构造应力场进行了初步模拟; 同时利用地应力驱动油气运移理论, 对运移势场进行了数值模拟。模拟结果表明, 最大主应力受岩性控制明显, 而最小主应力主要受埋深控制。已有的试油试气资料表明, 具油气显示的井, 大部分都位于地应力区和地势区。依据地应力和运移势场的分布, 并结合地质构造特征, 对油藏有利区进行了预测, 为油田的勘探开发提供了科学依据。
- 有限元 /
- 数值模拟 /
- 应力场 /
- 运移势场 /
- 油藏预测
Abstract: Tectonic stress is very important for oil-gas migration and accumulation. Petroleum accumulation for Gaotaizi reservoir in Songliao Basin mainly occurred in the end of Mingshui period. During this period, the peak of hydrocarbon generation and expulsion matches well with large scale hydrocarbon migration and accumulation periods and the formation of accumulations. In this paper, ANSYS is used to primarily simulate the tectonic stress field in the end of Mingshui period in Guizijing region of Qian'an area in South Songliao Basin. According to oil and gas migration mechanics driven by the crustal stress, migration potential field is also simulated. The results show that the first maximum principal stress is mainly controlled by lithology while the minimum principal stress is buried depth. Therefore, the well testing data shows that most wells with a show of oil and gas locate in low stress zone or low potential zone. Based on the distribution of crustal stress, migration potential fields and geologic structure features, the oil-favored areas predicted in this study will provide scientific guide for oil exploration and development.
- finite element /
- numerical stimulation /
- crustal stress /
- migration potential field /
- oil reservoir prediction

HTML全文

图 1 研究区青三段顶部构造图

Figure 1. The top structure graph of the third part of Qingshankou Formation in study area

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图 2 研究区三维有限元网格分析

Figure 2. The 3D finite element analytic meshes in study area

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图 3 研究区青三段含砂量等值线图

Figure 3. Sand content contour of the third part of Qingshankou Formation in study area

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图 4 古应力场最大主应力

Figure 4. The maximum principal stress in the paleo field

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图 5 L301剖面上古应力场最大主应力

Figure 5. The maximum principal stress of the section L301 in the paleo stress field

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图 6 古应力场最小主应力

Figure 6. The minimum principal stress in the paleo field

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图 7 L301剖面上古应力场最小主应力

Figure 7. The minimum principal stress of the section L301 in the paleo stress field

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图 8 研究区运移势场

Figure 8. The paleo migrating potential field in study area

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图 9 L301剖面运移势场(剖面位置见图 2)

Figure 9. The paleo migrating potential field of section L301

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图 10 乾安归字井区块勘探有利区预测

Figure 10. The predicted petroleum reservoir distribution map of the study area

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表 1 研究区岩石力学参数

Table 1. Rock mechanics parameters of the model

材料编号	模拟对象	砂地比/%	岩石模量E/10³ MPa	泊松比μ	岩石密度ρ/(g·cm^-3)	颜色
1		10.0	33.07	0.261	2.20	淡蓝
2		12.5	33.62	0.259	2.22	黄色
3		15.0	34.17	0.257	2.24	紫色
4		17.5	34.72	0.255	2.2	深蓝
5	目的层	20.0	35.26	0.253	2.28	粉红
6		22.5	35.81	0.251	2.30	绿色
7		25.0	36.34	0.249	2.32	土黄
8		27.3	36.90	0.247	2.34	青色
9		30.0	37.45	0.245	2.36	黑色
10	边框	17.5	34.71	0.255	2.26	深蓝
11	断层	-	20.83	0.275	2.14	深红

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