中低成熟阶段页岩有机质孔预测模型探讨

doi:10.3969/j.issn.1673-8926.2017.06.001

岩性油气藏 ›› 2017, Vol. 29 ›› Issue (6): 1–7.doi: 10.3969/j.issn.1673-8926.2017.06.001

• 油气地质 • 下一篇

中低成熟阶段页岩有机质孔预测模型探讨

郭秋麟¹, 武娜¹, 任洪佳¹, 陈宁生¹, 谌卓恒²

1. 中国石油勘探开发研究院, 北京 100083;
2. 加拿大自然资源部加拿大地质调查局, Alberta 3303

收稿日期:2017-06-29 修回日期:2017-08-17 出版日期:2017-11-21 发布日期:2017-11-21
第一作者:郭秋麟(1963-),男,博士,教授级高级工程师,主要从事油气资源评价、盆地数值模拟等方面的研究工作。地址:(100083)北京市海淀区学院路20号中国石油勘探开发研究院。Email:qlguo@petrochina.com.cn。
基金资助:
国家重点基础研究发展（973计划）项目"中国陆相致密油（页岩油）形成机理与富集规律"（编号：2014CB239000）和中国石油股份公司科技项目"大中型岩性地层油气藏富集规律与关键技术"（编号：2016B-0301）联合资助

Prediction models of organic pores in shale with low to moderate maturity

GUO Qiulin¹, WU Na¹, REN Hongjia¹, CHEN Ningsheng¹, CHEN Zhuoheng²

1. PetroChina Research Institution of Petroleum Exploration and Development, Beijing 100083, China;
2. Natural Resources Canada, Geological Survey of Canada, Alberta, Canada, 3303

Received:2017-06-29 Revised:2017-08-17 Online:2017-11-21 Published:2017-11-21

摘要/Abstract

摘要： 为了研究中低成熟阶段页岩有机质孔与页岩油的关系，对页岩有机质孔成因机理进行了分析，建立了页岩有机质孔隙度定量预测的转化率和产烃率2种理论模型，这2种模型都能够较好地预测页岩有机质孔隙度的上限值。根据扫描电镜观察的面孔率，建立了中低成熟阶段页岩有机质孔隙度预测模型，该模型可以计算页岩有机质孔隙度的近似值。统计分析表明：中国湖相页岩有机质面孔率与R_o之间呈指数关系，在中低成熟阶段，面孔率增长较慢；北美海相页岩有机质面孔率与R_o之间呈对数关系，在中低成熟阶段，面孔率增长较快。最后探讨了中低成熟阶段与高成熟-过成熟阶段页岩有机质孔的区别，指出中国中低成熟阶段湖相页岩有机质孔不如北美海相页岩有机质孔发育。

关键词: 低渗油藏, 聚合物/表面活性剂二元驱, 吸附能力, 色谱分离效应, 提高采收率

Abstract: Quantitative prediction of organic pores in shale with low to moderate maturity is significant for shale oil resources assessment. Theoretical models of the conversion rate and hydrocarbon generation rate were established to predict the organic porosity of shale quantitatively based on genetic mechanism of organic pores in shale. Both models can efficiently predict the upper limit for organic porosity of shale. Moreover,the statistic model for prediction of organic porosity of shale with low to moderate maturity was built with surface porosity observed through scanning electron microscope,which can be used to calculate the approximation of the organic porosity. The statistical analysis reveals findings in two aspects. Firstly,for the lacustrine shale in China,the surface porosity has an exponential relationship with R_o,and it increases slowly at the stages of low to moderate maturity. Secondly,for the marine shale in North America,the surface porosity has a logarithmic relationship with R_o,and it increases rapidly at the stages of low to moderate maturity. In addition,differences of organic pores between shale with low to moderate maturity and shale with high to over maturity were discussed. It is indicated that the lacustrine shale with low to moderate maturity in China contains less organic pores than the marine shale in North America,which provides references for study on organic pores in shale and assessment and exploration of shale oil resources.

Key words: low permeability reservoir, polymer/surfactant flooding, adsorption capacity, chromatographic fractionation effect, enhanced oil recovery

中图分类号:

P631.4

郭秋麟, 武娜, 任洪佳, 陈宁生, 谌卓恒. 中低成熟阶段页岩有机质孔预测模型探讨[J]. 岩性油气藏, 2017, 29(6): 1–7.

GUO Qiulin, WU Na, REN Hongjia, CHEN Ningsheng, CHEN Zhuoheng. Prediction models of organic pores in shale with low to moderate maturity[J]. Lithologic Reservoirs, 2017, 29(6): 1–7.

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中低成熟阶段页岩有机质孔预测模型探讨

Prediction models of organic pores in shale with low to moderate maturity

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