石油勘探与开发 >

2018 , Vol. 45 >Issue 5: 847 - 852

DOI: https://doi.org/10.11698/PED.2018.05.10

油气田开发

全直径砾岩长岩心水驱后烟道气驱油与埋存实验

  • 韩海水 ,
  • 李实 ,
  • 马德胜 ,
  • 姬泽敏 ,
  • 俞宏伟 ,
  • 陈兴隆
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  • 1. 提高石油采收率国家重点实验室,北京 100083;
    2. 中国石油勘探开发研究院,北京 100083
韩海水（1985-）,男,满族,河北秦皇岛人,博士,中国石油勘探开发研究院工程师,主要从事气驱提高石油采收率理论与技术方面的研究。地址：北京市海淀区学院路20号,中国石油勘探开发研究院采收率研究所,邮政编码：100083。Email: hanhaishui@petrochina.com.cn

收稿日期: 2017-12-26

  网络出版日期: 2018-07-18

基金资助

中国石油天然气股份有限公司重大科技专项（2014E-3601）; 中国石油天然气股份有限公司油气田开发重大科技项目（2016A-1002）; 国家重点研发计划项目“CO2驱油技术及地质封存安全监测”（2018YFB0605501）

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Investigation of flue gas displacement and storage after the water flooding in a full diameter conglomerate long-core

  • HAN Haishui ,
  • LI Shi ,
  • MA Desheng ,
  • JI Zemin ,
  • YU Hongwei ,
  • CHEN Xinglong
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  • 1. State Key Laboratory of Enhanced Oil Recovery, Beijing 100083, China;
    2. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;

Received date: 2017-12-26

  Online published: 2018-07-18

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摘要

选取新疆油田某砾岩油藏目的层段的5块全直径岩心拼接成直径10 cm、长度52.3 cm的长岩心组,利用中国自主研发的全直径长岩心驱替装置,模拟砾岩油藏衰竭、水驱、注烟道气驱、烟道气-水交替驱、CO2驱及烟道气埋存等全开发过程,并评价了烟道气驱的驱替特征和开发效果。研究表明,全直径岩心驱替实验可更大程度地模拟砾岩油藏的真实驱替特征和渗流特点;火驱产出烟道气可应用于砾岩油藏水驱后进一步提高采收率,取得较好开发效果的关键是选择合理的注气时机、注气压力、注气方式;水驱中期优势渗流通道尚未完全形成,此时适当提高油藏压力后转烟道气-水交替驱可避免烟道气过早气窜而形成无效循环,较大幅度提高采收率;烟道气-水交替驱油过程中,储集层可有效吸收烟道气中有害气体硫化氢,同时可实现烟道气的安全有效埋存。图5表7参21

关键词： 砾岩油藏; 全直径岩心; 烟道气驱油; 注气时机; 提高采收率; 废气埋存

本文引用格式

韩海水 , 李实 , 马德胜 , 姬泽敏 , 俞宏伟 , 陈兴隆 . 全直径砾岩长岩心水驱后烟道气驱油与埋存实验[J]. 石油勘探与开发, 2018 , 45(5) : 847 -852 . DOI: 10.11698/PED.2018.05.10

Abstract

Five full diameter cores were obtained from a conglomerate reservoir of Xinjiang oilfield. They were assembled into a full diameter long-core group, with a total length of 52.3 cm, 10 cm in diameter. With the full diameter long-core flooding system designed and produced in China, experiments were conducted to simulate depletion, water flooding, flue gas flooding, flue gas-water alternative flooding, CO2 flooding, and flue gas storage in the conglomerate reservoir, and the characteristics and effect of the flue gas flooding were evaluated. The study shows that full diameter long-core flooding experiment is more effective in simulating the gas displacement and percolation characteristics in the conglomerate reservoir. According to the experimental results, the flue gas produced from fire flooding can be used to enhance oil recovery of the water-drived conglomerate reservoir. The key to reaching a favorable development effect is to select the right timing, injection pressure and mode of flooding. In the middle of the water flooding stage, when the dominant percolation channel has not been formed, injecting flue gas and water alternatively after increasing reservoir pressure could avoid premature gas channeling and enhance oil recovery. During the flooding, the poisonous gas, H2S, was absorbed efficiently in cores and fluids, and flue gas was stored safely.

Key words： conglomerate reservoir; full diameter core; flue gas flooding; injection timing; EOR; flue gas storage

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