Study on the sedimentary facies of the member 3 and 4+5 of Yanchang Formation in Jiyuan area

  • WANG Daxing ,
  • YU Bo ,
  • ZHANG Mengbo ,
  • SONG Chen
Expand
  • School of Energy Resources, China University of Geosciences, Beijing 100083, China

Online published: 2008-03-15

Abstract

Jiyuan area, in southern Ordos Basin, is located at the structure unit between Shanbei Slope and Tianhuan Depression. The exploratory degree is low here, thus, the study on depositional system, sedimentary facies, reservoir distribution, traps accumulation, and the hydrocarbon enrichment of the member 3 and 4+5 of Yanchang Formation is not enough. Based on the outcrop, core and well log data, the lithologic characteristics, well log form and sedimentary microfacies are analyzed. The result shows that the member 3 and 4+5 are mainly composed of delta and lacustrine depositional systems, which can be further divided into two subfacies and five microfacies. According to the distribution and evolution rule of the sedimentary microfacies, the depositional model of the study area can be obtained.

Cite this article

WANG Daxing , YU Bo , ZHANG Mengbo , SONG Chen . Study on the sedimentary facies of the member 3 and 4+5 of Yanchang Formation in Jiyuan area[J]. Lithologic Reservoirs, 2008 , 20(1) : 59 -63 . DOI: 10.3969/j.issn.1673-8926.2008.01.010

References

[ 1] 刘化清, 袁剑英, 李相博, 等.鄂尔多斯盆地延长期湖盆演化及其成因分析[ J] .岩性油气藏, 2007, 19( 1) : 52- 56.
[ 2] 郑荣才, 王昌勇, 李虹, 等.鄂尔多斯盆地白豹—华池地区长6油层组物源区分析[ J] .岩性油气藏, 2007, 19( 1) : 32- 38.
[ 3] 韩永林, 李健, 王海红, 等.鄂尔多斯盆地西南缘晚三叠世早期沉积体系分析[ J] .低渗透油气田, 2005, 10( 4) : 1- 4.
[ 4] 杨飏, 郭正权, 黄锦绣, 等.鄂尔多斯盆地西南部延长组过剩压力与油藏的关系[ J] .地球科学与环境学报, 2006, 28( 2) : 49-52.
[ 5] 魏斌, 魏红红, 陈全红, 等.鄂尔多斯盆地上三叠统延长组物源分析[ J] .西北大学学报( 自然科学版) , 2003, 33( 4) : 447- 450.
[ 6] 宋凯, 吕剑文, 杜金良, 等.鄂尔多斯盆地中部上三叠统延长组物源方向分析与三角洲沉积体系[ J] . 古地理学报, 2002,4( 3) : 59- 66.
[ 7] 陈钢花.陕甘宁盆地三叠系延长组测井- 沉积微相研究[ J] . 中国海上油气( 地质) , 2002, 16( 1) : 54- 57.
Outlines

/