[1]顾 骁,王智林.多层非均质储层CO2吞吐及埋存效率实验[J].复杂油气藏,2022,15(04):65-70.[doi:10.16181/j.cnki.fzyqc.2022.04.012]
 GU Xiao,WANG Zhilin.Experimental research on CO2 huff and puff and storage efficiency in multi-layer heterogeneous reservoirs[J].Complex Hydrocarbon Reservoirs,2022,15(04):65-70.[doi:10.16181/j.cnki.fzyqc.2022.04.012]
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多层非均质储层CO2吞吐及埋存效率实验()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
15卷
期数:
2022年04期
页码:
65-70
栏目:
油气开发
出版日期:
2023-02-01

文章信息/Info

Title:
Experimental research on CO2 huff and puff and storage efficiency in multi-layer heterogeneous reservoirs
作者:
顾 骁王智林
中国石化江苏油田分公司勘探开发研究院,江苏 扬州 225009
Author(s):
GU XiaoWANG Zhilin
Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China
关键词:
多层非均质CO2吞吐采出程度气油比埋存效率
Keywords:
multilayer heterogeneous reservoir CO2 huff and puff recovery performance gas-oil ratio storage efficiency
分类号:
TE357.4
DOI:
10.16181/j.cnki.fzyqc.2022.04.012
文献标志码:
A
摘要:
CO2吞吐是一种目前广泛应用于各类油藏改善开发效果的有效方法。主要针对多层非均质油藏CO2吞吐过程中非均质性的影响和因毛管力导致的滞留埋存进行研究,通过单管和三管并联长岩心CO2吞吐实验,研究多层非均质性对吞吐效率、气油比和埋存率的影响。实验结果显示,存在一个最优渗透率,使多层非均质油藏CO2吞吐效果最好;强层间非均质性可以提高采出程度,低渗管一定程度上对提高中渗管和高渗管的采出程度作出了贡献,使三管组中的中渗管、高渗管采出程度和总采出程度均高于单管组,三管组总采出程度比单管组总采出程度高1.5%;多层非均质油藏CO2吞吐的总体埋存率偏低,埋存效果存在一个最优渗透率,非均质性越强,埋存率越高。研究可为同类多层强非均质油藏吞吐增效提供借鉴。
Abstract:
CO2 huff and puff is an effective method that is widely used in various reservoirs to improve the development effect. The effect of heterogeneity on the CO2 huff and puff process of multi-layer heterogeneous reservoirs and the retention and storage caused by capillary forces are mainly studied. The effect of multi-layer heterogeneity on the huff and puff efficiency,gas-oil ratio,and storage rate is investigated by single and three-tube parallel long-core CO2 huff and puff experiments. The experimental results show that there is an optimal permeability,which makes the best CO2 huff and puff effect in the multi-layer heterogeneous reservoir. Strong inter-layer heterogeneity can improve the recovery degree,and the low-permeability pipe contributes to a certain extent to improve the recovery degree of medium-permeability pipe and high-permeability pipe so that the recovery degree and total recovery degree of medium-permeability pipe and high-permeability pipe in the three-pipe group are higher than that of the single-pipe group,and the total recovery degree of the three-pipe group is 1.5% higher than that of the single-pipe group. The overall storage efficiency of CO2 huff and puff in multi-layered heterogeneous reservoirs is low,and there exists an optimal permeability for the storage effect,the stronger the heterogeneity,the higher the storage efficiency. The study can provide a reference for similar multi-layered strongly heterogeneous reservoirs to increase the efficiency of huff and puff.

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备注/Memo

备注/Memo:
收稿日期:2021-12-28;改回日期:2022-03-09。
第一作者简介:顾骁(1993—),硕士,现从事提高采收率技术研究。E-mail:gux_2.jsyt@sinopec.com。
基金项目: 国家科技重大专项“重油和高凝油油藏高效开发技术”(2011ZX05032-002);中国石化集团公司科研项目“苏北复杂断块低渗油藏注CO2技术及应用”(P16050)。
更新日期/Last Update: 2022-12-25