强底水稠油油藏水平井三维水驱物理模拟实验

doi:10.12108/yxyqc.20200216

岩性油气藏 ›› 2020, Vol. 32 ›› Issue (2): 141–148.doi: 10.12108/yxyqc.20200216

强底水稠油油藏水平井三维水驱物理模拟实验

杜旭林¹, 戴宗², 辛晶¹, 李海龙², 曹仁义¹, 罗东红²

1. 中国石油大学 (北京)石油工程学院, 北京 102249;
2. 中海石油 (中国) 有限公司深圳分公司, 广东深圳 518067

收稿日期:2019-06-11 修回日期:2019-08-14 出版日期:2020-03-21 发布日期:2020-01-19
第一作者:杜旭林(1992-),男,中国石油大学(北京)在读博士研究生,研究方向为渗流力学与油气藏数值模拟。地址:(102249)北京市昌平区府学路18号中国石油大学(北京)石油工程学院。Email:duxulin_cup@foxmail.com。
基金资助:
国家油气重大专项“海上稠油高效开发新技术”（编号：2016ZX05025-004-002）和中国海洋石油科技重大项目“双特高海相砂岩油藏精细描述及剩余油定量预测技术”（编号：CNOOC-KJ 135 ZDXM 22 LTD 02 SZ 2016）资助

Three-dimensional water flooding physical simulation experiment of horizontal well in heavy oil reservoir with strong bottom water

DU Xulin¹, DAI Zong², XIN Jing¹, LI Hailong², CAO Renyi¹, LUO Donghong²

1. College of Petroleum Engineering, China University of Petroleum(Beijing), Beijing 102249, China;
2. Shenzhen Branch Company, CNOOC, Shenzhen 518067, Guangdong, China

Received:2019-06-11 Revised:2019-08-14 Online:2020-03-21 Published:2020-01-19

摘要/Abstract

摘要： 珠江口盆地海相砂岩稠油油藏底水活跃，夹层分布复杂，开发难度较大，现有的常规实验规范无法准确地描述此类油藏的波及规律。基于南海东部X稠油油藏特征，设计了水平井三维水驱物理模拟实验，抽提出原油黏度和夹层分布范围作为影响水驱开发效果的主控因素，分析了强底水稠油油藏水驱开发中的水脊形态与波及规律。结果表明：稠油油藏水脊变化过程为局部锥进—局部见水—局部上托—围绕见水点拓展；稠油油藏水驱存在明显的油水过渡带，在开发后期波及范围增大有限，可采用大排量提液措施，重点挖潜在波及区油水过渡带中的剩余油；稠油油藏水驱应关注水平井沿程非均质性；对于含夹层稠油油藏，小范围夹层底部剩余油较少，大范围夹层易发生底水绕流形成次生边水，沿井筒方向波及范围增大幅度较大，在夹层下部残存大量剩余油，表现为“屋檐油”。该成果可为强底水稠油油藏治水防水及剩余油挖潜提供方案。

关键词: 强底水稠油油藏, 三维水驱实验, 夹层, 水脊形态, 波及规律, 珠江口盆地

Abstract: The marine sandstone heavy oil reservoirs in the Pearl River Mouth Basin in the South China Sea are characterized by strong energy of bottom water,non-uniformed distribution of interlayers,and difficult development. Conventional experimental standards barely reveal reservoir sweep feature under high-intensity water flooding. A three-dimensional water flooding physical simulation experiment of horizontal well was designed based on the characteristics of the heavy oil reservoir named X in Pearl River Mouth Basin. The oil viscosity and interlayer distribution range were proposed as the main controlling factors affecting water flooding effect, and the characteristics of water cresting and sweep feature in water flooding development of heavy oil reservoirs with strong bottom water were analyzed. The results show that the changing process of water cresting in heavy oil reservoir is local coning-local water breakthrough-local upper support-expansion around water breakthrough point. There exists obvious oil-water transitional zone in heavy oil reservoir water flooding, and the sweep region is limited in the late stage of development, so large displacement measures can be used. The remaining oil in the oil-water transitional zone of flood sweep zone is a potential tapping target. The problem of heterogeneity along horizontal wells should be focused on the development of heavy oil reservoirs water flooding. For heavy oil reservoirs with interlayer, there is a small amount of residual oil at the bottom of the small range interlayer. Since the secondary edge water is easily formed when the bottom water flows around the large interlayer so that the sweep region along the wellbore direction increases greatly, and there is a large amount of residual oil at the bottom of the interlayer called "eaves oil". This study can provide research direction for waterproofing and tapping potential of remaining oil of heavy oil reservoirs with strong bottom water.

Key words: heavy oil reservoirs with strong bottom water, three-dimensional water flooding experiment, interlayer, water cresting, sweep feature, Pearl River Mouth Basin

中图分类号:

TE345

杜旭林, 戴宗, 辛晶, 李海龙, 曹仁义, 罗东红. 强底水稠油油藏水平井三维水驱物理模拟实验[J]. 岩性油气藏, 2020, 32(2): 141–148.

DU Xulin, DAI Zong, XIN Jing, LI Hailong, CAO Renyi, LUO Donghong. Three-dimensional water flooding physical simulation experiment of horizontal well in heavy oil reservoir with strong bottom water[J]. Lithologic Reservoirs, 2020, 32(2): 141–148.

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强底水稠油油藏水平井三维水驱物理模拟实验

Three-dimensional water flooding physical simulation experiment of horizontal well in heavy oil reservoir with strong bottom water

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