[1]肖正录a,陈世加,廖建波,等.河道构型单元及其对油藏的控制作用——以鄂尔多斯盆地华庆地区长8段储集层为例[J].新疆石油地质,2018,(05):524.[doi:10.7657/XJPG20180504]
 XIAO Zhenglua,CHEN Shijia,LIAO Jianbo,et al.Channel Architecture Element and Its controls on Hydrocarbon Accumulation: A Case Study from Chang-8 Member in Huaqing Area, Ordos Basin[J].Xinjiang Petroleum Geology,2018,(05):524.[doi:10.7657/XJPG20180504]
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河道构型单元及其对油藏的控制作用——以鄂尔多斯盆地华庆地区长8段储集层为例()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2018年05期
页码:
524
栏目:
出版日期:
2018-10-01

文章信息/Info

Title:
Channel Architecture Element and Its controls on Hydrocarbon Accumulation: A Case Study from Chang-8 Member in Huaqing Area, Ordos Basin
文章编号:
1001-3873(2018)05-0524-06
作者:
肖正录1a陈世加1廖建波2李勇1a王攀1a丁振刚1a
(1.西南石油大学 a.地球科学与技术学院;b.天然气地质四川省重点实验室,成都 610500;2.中国石油 勘探开发研究院 西北分院,兰州 730020)
Author(s):
XIAO Zhenglu1a CHEN Shijia1 LIAO Jianbo2 LI Yong1a WANG Pan1a DING Zhengang1a
(1.Southwest Petroleum University, a.School of Geoscience and Technology; b.Sichuan Key Laboratory of Natural Gas Geology, Chengdu, Sichuan 610500, China; 2.Northwest Branch, Research Institute of Petroleum Exploration & Development, PetroChina, Lanzhou, Gansu 730020, China)
关键词:
鄂尔多斯盆地华庆地区延长组长8段储集层河道构型单元成藏控制因素
Keywords:
Ordos basin Huaqing area Yanchang formation Chang-8 member channel architecture element accumulation controlling factor
分类号:
TE112.221
DOI:
10.7657/XJPG20180504
文献标志码:
A
摘要:
鄂尔多斯盆地华庆地区长8段储集层油水差异性成藏问题是长期以来制约油田进一步开发部署的首要难题。水下分流河道砂体作为华庆地区原油的优势储集体,对其精细描述有利于解决相关复杂成藏问题。本文采用河道构型的相关概念和知识,选取华庆地区长8段储集层河道主体和河道侧翼的典型岩样,分别做单偏光和荧光镜下鉴定、微毛细管压汞和物性统计分析等工作。结果表明,河道主体砂体的物性远好于河道侧翼,在相同条件下,河道主体砂体更利于原油充注,河道侧翼砂体非均质性强,加剧了油水的差异性分布。通过构建砂体剖面和储集层模型,将河道复合砂体分为4种类型,河道主体砂体的厚度是决定油藏规模的重要指标。有限的原油会沿着规模较大的河道砂体远距离运移,在河道砂体尖灭处或构造高部位聚集成藏。
Abstract:
The oil-water differential accumulation in the Chang-8 member in Huaqing area of the Ordos basin is the primary problem that has constrained the further development and deployment of the oilfield for a long time. The sand bodies in the underwater distributary channel are the dominant oil reservoirs in Huaqing area, and the fine description for the underwater distributary channel is conducive to solving the complex problems on oil and water accumulation. Based on the concepts and knowledge of channel architecture, the paper selected the typical rock samples of river main body and flanks of the Chang-8 member in Huaqing area, and performed microscopic identification and statistic analysis on lithology and microcapillary mercury injection data. The results reveals the physical properties and pore structures of the main channel sand bodies are far better than those of channel flanks; under the same conditions the main channel sand bodies are more favorable for crude oil charging, channel flanks make reservoir’s heterogeneity strengthened, which influences the differential distribution of oil and water. Based on the establishment of sand body profile and reservoir model, the composite channel sand bodies can be classified into 4 types. The thickness of the main channel sand body is an important index to determine the scale of a reservoir, and the size of the sand body determines the migration and accumulation of crude oil. Limited crude oil migrated along the large-scale channel sand bodies and accumulated at pinchouts or the higher positions of structures

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更新日期/Last Update: 2018-10-09