储层层间非均质性对油藏改建储气库影响实验研究

doi:10.11885/j.issn.1674-5086.2025.12.08.01

西南石油大学学报(自然科学版) ›› 2026, Vol. 48 ›› Issue (4): 59-70.DOI: 10.11885/j.issn.1674-5086.2025.12.08.01

• 油藏型储气库建库技术专刊 • 上一篇下一篇

储层层间非均质性对油藏改建储气库影响实验研究

张国辉¹, 辛春彦¹, 汤勇², 徐德月¹, 袁晨刚², 居亚娟¹

1. 中国石油冀东油田分公司, 河北唐山 063004;
2. 油气藏地质及开发工程全国重点实验室 · 西南石油大学, 四川成都 610500

收稿日期:2025-12-08 出版日期:2026-07-17 发布日期:2026-07-17
通讯作者: 张国辉，E-mail:ghuizhang2007@163.com
基金资助:
油气重大专项（2025ZD1406800）

An Experimental Study on the Impact of Interlayer Heterogeneity on Reservoir Conversion to Gas Storage

ZHANG Guohui¹, XIN Chunyan¹, TANG Yong², XU Deyue¹, YUAN Chengang², JU Yajuan¹

1. PetroChina Jidong Oilfield Company, Tangshan, Hebei 063004, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2025-12-08 Online:2026-07-17 Published:2026-07-17
About author:张国辉，1982年生，女，汉族，山东武城人，高级工程师，主要从事储气库建库机理研究、库容空间评价和开发基础实验等方面的工作。E-mail:ghuizhang2007@163.com
辛春彦，1989年生，女，汉族，黑龙江哈尔滨人，高级工程师，硕士，主要从事储气库地质与油气藏工程相关方案编制与科研攻关方面的工作。E-mail:xinchunyan08@163.com
汤勇，1975年生，男，汉族，四川武胜人，教授，主要从事油气相态、注气驱及储气相关理论及实验研究。E-mail:tangyong2004@126.com
徐德月，1990年生，女，汉族，辽宁朝阳人，工程师，主要从事油气田开发地质基础实验和开发基础实验等工作。E-mail:js_xudy@petrochinacom.cn
袁晨刚，1997年生，男，汉族，四川泸州人，博士研究生，主要从事油藏提高采收率机理和地下储气库运行研究。E-mail:yuanchengang97@163.com
居亚娟，1982年生，女，汉族，江苏海安人，工程师，主要从事油气田开发形势分析和开发地质实验方面的工作。E-mail:jd_jyj@petrochina.com.cn

摘要/Abstract

摘要： 南堡1-5区块层间非均质性强，在改建储气库过程中，层间非均质性对驱动机理和库容形成具有重要影响。采用该区块天然岩芯及二维平板填砂胶结模型，开展双管并联长岩芯和二维模型气驱实验，研究层间非均质性对提高采收率协同建库的影响。结果表明：双管长岩芯和二维模型气驱及循环注采均降低了低渗岩芯的动用下限，提高了低渗岩芯驱油效率，缩小了高、低渗岩芯驱油效率和波及效率差异，有效缓解层间矛盾；气驱阶段是主要的产油和建库阶段，贡献了59%的采收率和72%的气体波及效率，该阶段以气顶驱动、重力分异及原油溶胀降黏驱油机理为主。非均质多层油藏建库应采用缓慢气驱策略，延长气驱时间，充分发挥气顶和重力驱替作用，以提高最终采收率和库容空间，为同类油藏储气库建设提高采收率研究提供了实验指导。

关键词: 油藏改建储气库, 层间非均质性, 双管并联长岩芯, 二维平板物理模型, 提高采收率机理

Abstract: The interlayer heterogeneity in the Nanpu 1-5 Block is strong, which significantly impacts the displacement mechanism and storage capacity formation during the process of converting the reservoir into an underground gas storage facility. Using natural cores and two-dimensional (2D) sand-packed cemented slab models from this block, dual-core parallel longcore flooding experiments and 2D model gas flooding experiments were conducted to investigate the influence of interlayer heterogeneity on enhanced oil recovery coupled with gas storage construction. The results show that both the dual-core long-core flooding and the 2D model gas flooding, as well as cyclic injection-production operations, lowered the mobilization threshold of the low-permeability cores, improved the oil displacement efficiency of the low-permeability cores, reduced the differences in oil displacement efficiency and sweep efficiency between the high and low permeability cores, and effectively alleviated interlayer conflicts. The gas flooding stage is the main phase for oil production and storage capacity creation, contributing 59% of the total oil recovery and 72% of the gas sweep efficiency. The dominant oil displacement mechanisms during this stage include gas cap drive, gravity segregation, and crude oil swelling and viscosity reduction. For UGS construction in heterogeneous multi-layer reservoirs, a slow gas flooding strategy should be adopted to prolong the gas flooding duration, thereby fully leveraging the roles of gas cap drive and gravity drainage to maximize the ultimate oil recovery and storage capacity. This study provides experimental guidance for EOR research during UGS construction in similar reservoirs.

Key words: conversion of oil reservoir to gas storage, interlayer heterogeneity, dual-tube parallel long-core, 2D sand-packed physical model, enhanced oil recovery mechanism

中图分类号:

TE341

张国辉, 辛春彦, 汤勇, 徐德月, 袁晨刚, 居亚娟. 储层层间非均质性对油藏改建储气库影响实验研究[J]. 西南石油大学学报(自然科学版), 2026, 48(4): 59-70.

ZHANG Guohui, XIN Chunyan, TANG Yong, XU Deyue, YUAN Chengang, JU Yajuan. An Experimental Study on the Impact of Interlayer Heterogeneity on Reservoir Conversion to Gas Storage[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2026, 48(4): 59-70.

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储层层间非均质性对油藏改建储气库影响实验研究

An Experimental Study on the Impact of Interlayer Heterogeneity on Reservoir Conversion to Gas Storage

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