Diagenesis and pore evolution of the first member of Shahejie Formation in Qikou Sag

  • XIA Guoqing ,
  • YI Haisheng ,
  • HUANG Huagu ,
  • LI Junpeng
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  • Research Institute of Petroleum Exploration and Development-Langfang, PetroChina, Langfang 065007, China

Online published: 2009-03-16

Abstract

Compaction, cementation, denudation and replacement are the main diagenesis types in the first member of Shahejie Formation in Qikou Sag. Denudation takes a significant part of improving the reservoir property when above 2 200 m. There are two secondary porosity zones developed in the vertical direction, with the depth respectively ranging from 2 700 m to 3 200 m and from 3 500 m to 4 200 m, and the peak value of porosity is at 3 150 m and 3 650 m respectively. Based on the data of vitrinite reflectance, ratio of clay mineral mixed layer and palaeogeothermal, the diagenetic stages of the first member of Shahejie Formation in Qikou Sag can be divided into 4 stages: early diagenesis A stage, early diagenesis B stage, middle diagenesis A1 substage and middle diagenesis A2 substage, and nowit is mainly in the middle diagenesis A1 substage tomiddle diagenesis A2 substage.

Cite this article

XIA Guoqing , YI Haisheng , HUANG Huagu , LI Junpeng . Diagenesis and pore evolution of the first member of Shahejie Formation in Qikou Sag[J]. Lithologic Reservoirs, 2009 , 21(1) : 34 -39 . DOI: 10.3969/j.issn.1673-8926.2009.01.007

References

[1] 大港油田石油地质志编辑委员会.中国石油地质志(卷四)[M].北京:石油工业出版社,1991:10-125.
[2] 孟元林,周玥,付静茹,等.歧南凹陷下第三系成岩阶段划分[J].地学前缘,2004,11(1),138-146.
[3] 张枝焕,王泽中,李艳霞,等.黄骅坳陷三马地区中深部储层成岩作用及主控因素分析[J].沉积学报,2003,21(4):129-137.
[4] 常兴浩,张枝焕,李艳霞,等.黄骅坳陷三马地区中深部储层孔隙发育及主控因素分析[J].地球学报,2005,26(1):112-120.
[5] 王光奇,漆家福,岳云福.歧口凹陷及周缘新生代构造的成因和演化[J].地质科学,2003,38(2):230-240.
[6] 陈纯芳,赵澄林,李会军.板桥和歧北凹陷沙河街组深层碎屑岩储层物性特征及其影响因素[J].石油大学学报,2002,26(1):158-163.
[7] 郑浚茂,庞明.碎屑储集岩的成岩作用研究[M].武汉:中国地质大学出版社,1989:26-128.
[8] 彭学红,何贞铭,刘学峰.大港油田小集官162 断块沉积相研究[J].岩性油气藏,2008,20(2):66-73.
[9] 奇林格 G V.沉积学的进展———碳酸盐岩[M].北京:石油工业出版社,1982:1-358.
[10] 魏钦廉,郑荣才,肖玲,等.鄂尔多斯盆地吴旗地区长6 储层特征及影响因素分析[J].岩性油气藏,2007,19(4):45-50.
[11] 杜海峰,于兴河.鄂尔多斯盆地姬塬地区延长组长3 油组成岩作用分析[J].岩性油气藏,2007,19(3):38-43.
[12] 郑荣才,耿威,周刚,等.鄂尔多斯盆地白豹地区长6 砂岩成岩作用与成岩相研究[J].岩性油气藏,2007,19(2):1-8.
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