Petroleum migration and accumulation of Yanchang Formation in Jiyuan area , Ordos Basin

SHI Yucheng; CHEN Mingqiang; ZHANG Shenqin; LEI Xinhui; WANG Qi

doi:10.3969/j.issn.1673-8926.2007.03.006

Lithologic Reservoirs >

2007 , Vol. 19 >Issue 3: 32 - 37

DOI: https://doi.org/10.3969/j.issn.1673-8926.2007.03.006

Petroleum migration and accumulation of Yanchang Formation in Jiyuan area , Ordos Basin

SHI Yucheng ,
CHEN Mingqiang ,
ZHANG Shenqin ,
LEI Xinhui ,
WANG Qi

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1. School of sedimentary , Chengdu University of Technology , Chengdu 610059 , China;
2. Research Institute of Petroleum Exploration and Development , Changqing Oilfield Company , PetroChina , Xi’an 710021 , China

Online published: 2007-09-15

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Abstract

Based on the analysis of source rocks , reservoir , dynamics and migration pat hways of Yanchang Formation in J iyuan area , Ordos Basin , the rule of pet roleum migration and accumulation is analyzed. Dark mudstones were developed in t he maximum lake flooding period of Chang 7 , which are t he main source rocks. Most of the reservoir s are extra-low permeability reservoirs. The intergranular pore is t he main space for reservoir , and the pore throat types are mainly thin-pore with micro-throat and micro-pore with micro-throat . Anomalous pressure is the main dynamic for the hydrocarbon migration , and it is closely related to the depth of the duck mudstone. Connected sand bodies are the main migration pathway , in which high permeability in accumulation stage takes an important part . The reservoir distribution of Yan-chang Formation is partly controlled by micro-fractures. Two types of accumulation patterns including “source rocks-connected sand bodies-reservoir”and“source rocks - micro-fractures-reservoir”are finally summarized.

Key words： low permeability; flow unit; single well controlled reserves

Cite this article

SHI Yucheng , CHEN Mingqiang , ZHANG Shenqin , LEI Xinhui , WANG Qi . Petroleum migration and accumulation of Yanchang Formation in Jiyuan area , Ordos Basin[J]. Lithologic Reservoirs, 2007 , 19(3) : 32 -37 . DOI: 10.3969/j.issn.1673-8926.2007.03.006

References

[1 ] 　曾大乾,李淑贞. 中国低渗透砂岩储层类型及地质特征[J ] . 石油学报,1994 ,15 (1) :38-46.
[2 ] 　姚约东,葛家理. 低渗透油藏不稳定渗流规律的研究[J ] . 石油大学学报(自然科学版) ,2003 ,27 (2) :55-58.
[ 3 ] 　赵应成,王天琦,田光荣,等. 低渗透油田富集区预测技术研究———以松辽盆地扶杨油层为例[J ] . 岩性油气藏,2007 ,19(1) :21-26.
[ 4 ] 　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.
[ 5 ] 　杨华,张文正. 论鄂尔多斯盆地长7 段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J ] . 地球化学,2005 ,34 (2) :147-154.
[ 6 ] 　刘勇,金晓辉,雷天成. 鄂尔多斯盆地延长组油气初次运移特征[J ] . 西安石油学院学报,1997 ,12 (1) :8-11.
[ 7 ] 　席胜利,刘新社. 鄂尔多斯盆地中生界石油二次运移通道研究[J ] . 西北大学学报(自然科学版) ,2005 ,35 (5) :628-632.
[ 8 ] 　席胜利,刘新社,王涛. 鄂尔多斯盆地中生界石油运移特征分析[J ] . 石油实验地质,2004 ,26 (3) :229-235.
[ 9 ] 　杨新生. 鄂尔多斯盆地南部侏罗系石油成藏与分布的控制因素[ C]/ / 长庆油田公司勘探开发研究院编. 鄂尔多斯盆地油气勘探开发论文集( 1990 - 2000) . 北京: 石油工业出版社,2000 :190-198.
[ 10 ] 　王琪,禚喜准,陈国俊,等. 鄂尔多斯盆地盐池—姬塬地区三叠系长4 + 5 砂岩成岩演化特征与优质储层分布[J ] . 沉积学报,2005 ,23 (3) :397-405.
[ 11 ] 　赵文智,胡树云,汪泽成,等. 鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J ] . 石油勘探与开发,2003 ,30 (5) :125.
[ 12 ] 　何自新,贺静. 鄂尔多斯盆地中生界储层图册[M] . 北京:石油工业出版社,2004.
[13 ] 　李道品. 低渗透油田高效开发决策论[M] . 北京:石油工业出版社,2003.
[ 14 ] 　李道品, 罗迪强,刘雨芬,等. 低渗透砂岩油田开发[ M] . 北京:石油工业出版社,1997.
[15 ] 　周立宏,刘国芳. 利用泥岩声波时差估算地层压力[J ] . 石油实验地质,1996 ,18 (2) :195-199.

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