摘要
碎屑岩油藏传统的隔夹层建模主要是简单地描述隔夹层,缺乏不同隔夹层建模方法对剩余油分布的系统性认识。设计4口虚拟井,分别建立层间和层内隔夹层随机模型和确定性模型,对不同的模型进行天然能量、注水和注气开发的油藏数值模拟,扩大面积、增加井数建立相应的模型进行对比。结果表明:随机建模方法得到的模拟结果非均质性强,不确定性大,而确定性建模方法得到的模拟结果与地质认识较相符;隔夹层建模方法的不同导致对油水运动、剩余油分布和注水注气控制作用认识的差异明显。在油田开发中后期,应充分利用地质认识建立确定性隔夹层模型和对应的相控储集层属性模型,准确量化剩余油分布,为井位部署提供依据。
The conventional method of clastic reservoir interlayer modeling aims at simple interlayer description,which is lack of systematic understanding about remaining oil distribution.Four virtual wells are designed and stochastic and deterministic models are established for between-layer and within-layer interlayers.Reservoir numerical modeling regarding production modes of natural energy,water injection and gas injection is performed for the different models,the corresponding models are established by increasing area and expanding well numbers,respectively and comparisons of the models are carried out.The comparison results show that the result obtained from the stochastic modeling is of significant heterogeneity and large uncertainty,and the result obtained from the deterministic modeling is in accordance with the geological understanding.Different interlayer modeling methods lead to obvious differences in cognitions about the remaining oil distribution with the same production mode,and result in different controls on oil and water movement,remaining oil distribution and water injection and gas injection.During the middle-late stage of oilfield development,the geological understandings should be fully used to establish a deterministic interlayer model and a corresponding facies-controlled reservoir model,and to accurately quantify the remaining oil distribution,then providing basis for well allocation.
作者
练章贵
李君
王晓
王开宇
邵光强
张曙振
LIAN Zhanggui;LI Jun;WANG Xiao;WANG Kaiyu;SHAO Guangqiang;ZHANG Shuzhen(Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China;Schlumberger China,Beijing 100015,China)
出处
《新疆石油地质》
CAS
CSCD
北大核心
2019年第5期605-609,共5页
Xinjiang Petroleum Geology
基金
中国石油科技重大专项(2018E-1805)
关键词
碎屑岩油藏
隔夹层
确定性建模
随机建模
剩余油分布
clastic reservoir
interlayer
deterministic modeling
stochastic modeling
remaining oil distribution
