必须声明标量变量 "@Script_ID"。 鄂尔多斯盆地西南部中侏罗统直罗组储集砂体特征及聚砂成藏模式-《地球科学与环境学报》
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[1]陈安清,张晓星,密文天,等.鄂尔多斯盆地西南部中侏罗统直罗组储集砂体特征及聚砂成藏模式[J].地球科学与环境学报,2019,41(05):517-528.
 CHEN An-qing,ZHANG Xiao-xing,MI Wen-tian,et al.Favorable Sandstone Reservoir Characteristics and Hydrocarbon Accumulation Models of Middle Jurassic Zhiluo Formation in the Southwestern Ordos Basin, China[J].Journal of Earth Sciences and Environment,2019,41(05):517-528.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第41卷
期数:
2019年第05期
页码:
517-528
栏目:
基础地质与矿产地质
出版日期:
2019-09-15

文章信息/Info

Title:
Favorable Sandstone Reservoir Characteristics and Hydrocarbon Accumulation Models of Middle Jurassic Zhiluo Formation in the Southwestern Ordos Basin, China
文章编号:
1672-6561(2019)05-0517-12
作者:
陈安清1张晓星1密文天2康永梅3刘一仓3 王联国3杜佳宁3侯明才1缪宗利1
(1. 成都理工大学 油气藏地质及开发工程国家重点实验室,四川 成都 610059; 2. 内蒙古工业大学 矿业学院,内蒙古 呼和浩特 010051; 3. 中国石油长庆油田分公司第十一采油厂,甘肃 庆阳 745000)
Author(s):
CHEN An-qing1 ZHANG Xiao-xing1 MI Wen-tian2 KANG Yong-mei3 LIU Yi-cang3 WANG Lian-guo3 DU Jia-ning3 HOU Ming-cai1 MIAO Zong-li1
(1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 2. College of Mining, Inner Mongolia University of Technology, Hohhot 010051, Inner Mongolia, China; 3. No.11 Oil Production Plant, Changqing Oilfield Company, PetroChina, Qingyang 745000, Gansu, China)
关键词:
源汇系统 古地貌 物源 沉积相 储层 油气成藏 直罗组 鄂尔多斯盆地
Keywords:
source-sink system paleogeomorphology source sedimentary facies reservoir hydrocarbon accumulation Zhiluo Formation Ordos Basin
分类号:
P618.13
DOI:
-
文献标志码:
A
摘要:
鄂尔多斯盆地西南部中侏罗统直罗组是潜在的新勘探层系,勘探研究程度极低。在野外露头观测、岩芯观察、测井数据解释和显微薄片鉴定的基础上,通过古流向分析和古地貌恢复,确定古水系分布; 在古地貌和古水系的约束下,基于500余口钻井的测井解释结果,确定8个亚段的砂体宏观分散体系和沉积相分布。结果表明:鄂尔多斯盆地西南部中侏罗统直罗组物源主要来自西南侧的西秦岭造山带; 早期物源较强,沉积环境为辫状河-辫状河三角洲,形成了灰色厚层砂岩夹泥岩; 晚期物源较弱,沉积环境转变为曲流河三角洲,以发育紫红色泥岩与砂岩互层为特征; 直罗组砂岩储层以原生粒间孔为主,溶蚀孔次之,孔隙度为0.87%~31.20%(平均值为16.34%),渗透率为(0.13~53.70)×10-3 μm2(平均值为17.83×10-3 μm2),有效储层的孔隙度下限高于15%; 直罗组沉积初期古地貌既控制了砂体的发育分布,又制约了有利储集砂体发育的优势部位及后来的油气运移的有利指向; 潜在的油藏勘探目标包括古河道上游高地、中游汇水坡咀和下游河间丘等3种古地貌聚砂成藏模式。
Abstract:
Middle Jurassic Zhiluo Formation in the southwestern Ordos Basin is a new potential exploration target with low degree of exploration. Based on outcrop and core observation, interpretation of logging data and thin sections identification, the paleocurrent and paleogeomorphology were reconstructed to reveal the distribution of paleo-drainage system; based on the logging interpretation of more than 500 boreholes, combined the constraint of paleogeomorphology and paleo-drainage, the macroscopic dispersion system of sandbody and the distribution of sedimentary facies were proposed. The results show that the source of Zhiluo Formation in the southwestern Ordos Basin is mainly from West Qinling orogenic belt in the southwest; the supply of sand is abundant in early, and the sedimentary environment is braided river-braided river delta, which builds grey thick sandstone intercalated with mudstone; then the supply of source changes to fine grains dominated, and the sedimentary environment turns into meandering river delta characterized by the development of purple mudstone with sandstone interbed; sandstone reservoir of Zhiluo Formation is dominated by primary intergranular pores and dissolution pores, and the porosity is 0.87%-31.20% with the average of 16.34%, the permeability is(0.13-53.70)×10-3 μm2 with the average of 17.83×10-3 μm2, the lowest porosity-limit of effective reservoir is 15%; in the early deposition of Zhiluo Formation, the paleogeomorphology not only controls the development and distribution of sandbody, but also influences the advantageous position for the development of sandbody and the direction of hydrocarbon migration subsequently; potential reservoir targets include three types of hydrocarbon accumulation models related with paleogeomorphology, that is, highlands in upstream, curved slop toe in midstream and interriver mound in downstream.

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备注/Memo

备注/Memo:
收稿日期:2019-04-26; 修回日期:2019-05-31投稿网址:http:∥jese.chd.edu.cn/
基金项目:国家自然科学基金项目(41872109); 内蒙古自然科学基金项目(2018LH04006)
作者简介:陈安清(1981-),男,江西吉安人,副教授,理学博士,E-mail:aqinth@163.com。
更新日期/Last Update: 2019-09-19