|Table of Contents|

Reservoir Characteristic of Yan-8 Formation in Mahuangshan Area of Western Ordos Basin(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2010年第01期
Page:
65-69
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Reservoir Characteristic of Yan-8 Formation in Mahuangshan Area of Western Ordos Basin
Author(s):
DING Xiao-qi;  ZHANG Shao-nan;  LIU Peng-kun;  DENG Li-zheng
(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, Sichuan, China)
Keywords:
Ordos Basin;  Mahuangshang;  reservoir;  lithofacies
PACS:
P618.130.2+1;TE122.2+3
DOI:
-
Abstract:
Yan-8 Formation is an important explored layer in Mahuangshang area of western Ordos Basin. Based on cast thin section, scanning electron microscope, porosity and permeability determination and mercury penetration, characteristic of Yan-8 formation was discussed. It includes that plagioclase-rich in north and Quartz-rich in south have different provenance; loam-grained is the main compost in sand rock, followed by fine-grained and coarse-grained; the main reservoir was intergranular pores and intragranular dissolved pores; because of dissolved feldspar and rock debris, porosity and permeability are overextended and not normal distribution, a large number of micro-pore caused by dissolution results in a high irreducible water saturation, production of pure oil or moisture content are very low; sand body thickness, rock facies and diagenesis control the properties of reservoir commonly. The result shows that loam sandstone of weak cementation in the middle of river has good reservoir properties.

References:

[1] 长庆油田石油地质志编写组.中国石油地质志:第十二卷,长庆油田[M]. 北京:石油工业出版社,1992.
[2] 傅 强,李 益. 鄂尔多斯盆地三叠系延长组长8—长7油层组高分辨率层序地层格架及其地质意义[J]. 现代地质,2006,20(4):579-584.
[3] 李凤杰,王多云. 拗陷湖盆三角洲前缘沉积微相构成及其分带性——以鄂尔多斯盆地上三叠统延长组为例[J]. 天然气地球科学,2006,17(6):775-778.
[4] 王 峰,田景春,张锦泉,等. 鄂尔多斯盆地中西部延长组长6油层组物源分析[J]. 沉积与特提斯地质,2006,26(3):26-30.
[5] 武富礼,李文厚,李玉宏,等. 鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J]. 古地理学报,2004,6(3):307-315.
[6] 赵 虹,党 犇,陈永胜,等.鄂尔多斯盆地姬塬地区三叠系延长组长2油层组储层特征及影响因素[J].西安科技大学学报,2009,29(5):579-583.
[7] 郭 强,夏玲燕,侯宝宁,等.陕北斜坡中部TBC地区侏罗系延安组延10与延9沉积相研究[J].西北地质,2009,42(2): 89-94.
[8] 赵俊兴,陈洪德. 鄂尔多斯盆地侏罗纪早中期甘陕古河的演化变迁[J]. 石油与天然气地质,2006,27(2):152-158.
[9] 赵俊兴,陈洪德,时志强. 古地貌恢复技术方法及其研究意义——以鄂尔多斯盆地侏罗纪沉积前古地貌研究为例[J]. 成都理工学院学报,2001,28(3):260-266.
[10] 王允诚.油层物理学[M].成都:四川科学技术出版社,2006.
[11] Cowan G.Diagenesis of Upper Carboniferous Sandstones:Southern North Sea Basin[J].Geological Society,London,Special Publications,1989,41:57-73.
[12] Barnes D A,Lundgren C E,Longman M W.Sedimentology and Diagenesis of the St.Peter Sandstone,Central Michigan Basin,United States[J].AAPG Bulletin,1992,76(10):1507-1532.
[13] Worden R H,Oxtoby N H,Smalley P C.Can Oil Emplacement Prevent Quartz Cementation in Sandstones[J].Petroleum Geoscience,1998,4(2):129-137.
[14] Cagatay M N,Saner S,Al-Saiyed I,et al.Diagenesis of the Safaniya Sandstone Member(Mid-cretaceous)in Saudi Arabia[J].Sedimentary Geology,1996,105(3/4):221-239.

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Last Update: 2010-03-20