학술논문
鄂尔多斯盆地郑寺区块长21储层非均质性研究 / Study on Heterogeneity of Chang 21 Reservoir in Zhengsi Block of Ordos Basin
Document Type
Academic Journal
Source
云南化工 / Yunnan Chemical Technology. 50(12):123-127
Subject
Language
Chinese
ISSN
1004-275X
Abstract
针对郑寺区块长21 储层非均质性认识不清,依据储层物性测试分析结果及测井数据,对研究区的层内、层间和平面非均质性进行了精细研究.研究认为,层内非均质性在砂体韵律、渗透率非均质参数及夹层分布方面表现为强非均质性,长211 小层非均质性最强,其次为长231 和长221 小层;层间方面,从砂岩密度和隔层分布,长231 小层的层间非均质性最强;平面上,长21 储层砂体的连通性较好,但横向变化较大,非均质性较强.总的来说,长21 储层各个维度都表现出强非均质性,其中长211 小层非均质性最强,其次为长231 和长221 小层.明确研究区长21 储层非均质性,有助于认识长21 油层亚组油、水空间的展布规律,可以为油田高效开发及剩余油挖潜提供理论依据.
In view of the unclear understanding of the reservoir heterogeneity of Chang 21 in Zhengsi block,the intra-,interlayer and plane het-erogeneity of the study area is studied in detail based on the results of reservoir physical property testing and logging data.The results show that the in-layer heterogeneity is strong in terms of sand body rhythm,permeability heterogeneity parameters and interlayer distribution,and the Chang 211 small layer has the strongest heterogeneity,followed by Chang 231 and Chang 221 small layers.From the perspective of sandstone density and interlayer distribution,the interlayer heterogeneity of Chang 231 is the strongest.On the plane,the sand body of Chang 21 reservoir has good connectivity,but the lateral variation is large and the heterogeneity is strong.In general,all the dimensions of Chang 21 reservoir show strong het-erogeneity,among which Chang 211 is the most heterogeneous,followed by Chang 231 and Chang 221.To clarify the heterogeneity of Chang 21 reser-voir in the study area is helpful to understand the spatial distribution law of oil and water in Chang 21 oil subgroup,and can provide theoretical reference for efficient oilfield development and remaining oil exploitation.
In view of the unclear understanding of the reservoir heterogeneity of Chang 21 in Zhengsi block,the intra-,interlayer and plane het-erogeneity of the study area is studied in detail based on the results of reservoir physical property testing and logging data.The results show that the in-layer heterogeneity is strong in terms of sand body rhythm,permeability heterogeneity parameters and interlayer distribution,and the Chang 211 small layer has the strongest heterogeneity,followed by Chang 231 and Chang 221 small layers.From the perspective of sandstone density and interlayer distribution,the interlayer heterogeneity of Chang 231 is the strongest.On the plane,the sand body of Chang 21 reservoir has good connectivity,but the lateral variation is large and the heterogeneity is strong.In general,all the dimensions of Chang 21 reservoir show strong het-erogeneity,among which Chang 211 is the most heterogeneous,followed by Chang 231 and Chang 221.To clarify the heterogeneity of Chang 21 reser-voir in the study area is helpful to understand the spatial distribution law of oil and water in Chang 21 oil subgroup,and can provide theoretical reference for efficient oilfield development and remaining oil exploitation.