墨西哥湾Burgos盆地上Wilcox储层发育特征及分布规律
发布时间：2020-11-01 00:39
Burgos深水盆地位于墨西哥东部、美国南部。在上古新统、下始新统的上Wilcox组发现多个深层油气田,显示Burgos盆地具有良好的勘探潜力。本文的主要目的是研究储层发育特征和预测储层有利区分布。深水储层埋深大,孔隙度和渗透率是决定油气勘探潜力的关键因素,因此,确定储层物性发育的控制因素,是了解和评价储层特征、预测储层分布的必要条件。本次研究的目的层为Wilcox组,在该组共识别出5个三级层序,划分出5个沉积微相,分别为浊积水道、水道化朵叶、近端朵叶、远端朵叶和深海-深海泥。岩矿组成分析表明,储层岩石类型主要为长石岩屑砂岩、岩屑长石砂岩和长石砂岩,石英、长石和岩屑占岩石总体积的60%,孔隙空间,胶结物,杂基,有机质含量为剩余部分。岩石颗粒大小主要为细砂到极细砂,分选较差。主要孔隙类型有粒间孔、粒内孔、次生溶孔和微孔。上Wilcox砂岩储层主要经历压实、胶结和溶蚀成岩作用。根据岩石薄片、扫描电镜、盐矿分析和X衍射等资料,发现Wilcox储层处于早成岩A期至中成岩A期。储层的控制因素包括颗粒大小和分选、胶结物含量及杂基含量,压实作用和胶结作用使储层物性变差,至早成岩B期,溶蚀作用增强,大大提高了储层孔隙度和渗透率。研究区储层由好到坏分为Ⅰ、Ⅱ、Ⅲ类,近端朵叶和水道化朵叶近叶主要为Ⅰ类储层,远端朵叶为Ⅱ类储层,Ⅲ类储层埋深一般在5600米以下。
【学位单位】：中国地质大学(北京)
【学位级别】：硕士
【学位年份】：2020
【中图分类】：P618.13
【文章目录】：
摘要
abstract
1 Introduction
1.1 Research Significance
1.2 Literature review
1.2.1 Terrestrial reservoir quality
1.2.2 Deepwater reservoir quality
1.2.3 Exploration history
1.3 Research Content
1.4 Research Plan
1.5 Completed Tasks
1.6 Key analysis
2 Geological Background
2.1 Study Area
2.2 Tectonic setting
2.3 Stratigraphical Framework
2.4 Sequence Stratgraphy division
3 Upper Wilcox Sedimentary Charateristics
3.1 Facies analysis
3.2 Facies characterisitics
3.3 Well analysis and correlation
3.4 Upper Wilcox Facies distribution
4 Petrography and Diagenesis
4.1 Petrographic characteristics
4.1.1 Mineralogical analysis
4.1.2 Interstitial materials composition
4.1.3 Texture characteristics
4.2 Diagenetic characteristics
4.2.1 Diagenetic processes
4.2.2 Diagenetic division
4.2.3 Diagenetic sequence
4.2.4 Diagenetic evolution model
5 Reservoir Characteristics
5.1 Pore types
5.2 Petrophysical characteristics
5.2.1 Upper Wilcox Reservoir
5.2.2 Relationship with microfacies
5.2.3 Relationship with depth
6 Reservoir Prediction
6.1 Favorable reservoir characteristics
6.1.1 Petrographic characteristics impact
6.1.2 Diagenetic characteristics impact
6.1.3 Sedimentary facies implication
6.2 Reservoir evaluation
6.2.1 Evaluation technique
6.2.2 Evaluation parameter
6.3 Reservoir distribution prediction
Conclusion
Acknowledgement
References
Appendix
【参考文献】
本文编号：2864759
【学位单位】：中国地质大学(北京)
【学位级别】：硕士
【学位年份】：2020
【中图分类】：P618.13
【文章目录】：
摘要
abstract
1 Introduction
1.1 Research Significance
1.2 Literature review
1.2.1 Terrestrial reservoir quality
1.2.2 Deepwater reservoir quality
1.2.3 Exploration history
1.3 Research Content
1.4 Research Plan
1.5 Completed Tasks
1.6 Key analysis
2 Geological Background
2.1 Study Area
2.2 Tectonic setting
2.3 Stratigraphical Framework
2.4 Sequence Stratgraphy division
3 Upper Wilcox Sedimentary Charateristics
3.1 Facies analysis
3.2 Facies characterisitics
3.3 Well analysis and correlation
3.4 Upper Wilcox Facies distribution
4 Petrography and Diagenesis
4.1 Petrographic characteristics
4.1.1 Mineralogical analysis
4.1.2 Interstitial materials composition
4.1.3 Texture characteristics
4.2 Diagenetic characteristics
4.2.1 Diagenetic processes
4.2.2 Diagenetic division
4.2.3 Diagenetic sequence
4.2.4 Diagenetic evolution model
5 Reservoir Characteristics
5.1 Pore types
5.2 Petrophysical characteristics
5.2.1 Upper Wilcox Reservoir
5.2.2 Relationship with microfacies
5.2.3 Relationship with depth
6 Reservoir Prediction
6.1 Favorable reservoir characteristics
6.1.1 Petrographic characteristics impact
6.1.2 Diagenetic characteristics impact
6.1.3 Sedimentary facies implication
6.2 Reservoir evaluation
6.2.1 Evaluation technique
6.2.2 Evaluation parameter
6.3 Reservoir distribution prediction
Conclusion
Acknowledgement
References
Appendix
【参考文献】
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