黄骅坳陷沧东凹陷孔二段成岩作用特征及定量评价
网络出版日期: 2013-06-01
Diagenesis and its quantitative evaluation of the second member of Kongdian Formation in Cangdong Sag, Huanghua Depression
Online published: 2013-06-01
南山 , 韩雪芳 , 潘玲黎 , 王玉秀 , 刘志刚 . 黄骅坳陷沧东凹陷孔二段成岩作用特征及定量评价[J]. 岩性油气藏, 2013 , 25(3) : 28 -35 . DOI: 10.3969/j.issn.1673-8926.2013.03.005
Based on systematic observation of normal and cast thin section, scanning electronic microscope, cathodoluminescene and analysis of X-ray, the characteristics of main diagenesis of the second member of Kongdian Formation in Cangdong Sag were analyzed. The result shows that it is of medium-strong compaction, medium cementation and strong dissolution in Nanpi slope, where clay coats can restrain the quartz enlargement and protect the primary and secondary dissolved pores. Shenvsi fault-nose is characterized by medium compaction, low cementation and strong dissolution. Kongdian tectonic zone is characterized by low compaction, medium cementation and low dissolution. The quantitative analysis of diagenesis shows that compaction, cementation and dissolution can cause -26.1%, -4.3% and 6.0% of porosity fluctuations respectively, and dissolution is important constructive diagenesis.
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