稠油油藏高含水及天然气吞吐出砂分析Analysis of high water cut of heavy oil reservoir and the sanding of natural gas huff-and-puff
王登庆,李维忠,朱彩虹
WANG Deng-qing~1,LI Wei-zhong~2,ZHU Cai-hong~2 (1.China University of Petroleum
摘要(Abstract)：
从理论和试验两方面论述了高含水和天然气吞吐对稠油油藏开发中后期出砂的影响。从理论上分析了含水升高对出砂指数、弹性模量等地层强度的降低及相应地层渗流规律的变化,并通过利用物模试验验证含水率升高和天然气吞吐对地层的破坏作用。试验表明,随着天然气的吞吐和含水的升高,炮孔的破坏压力和出砂压力都有明显的降低,由局部单点破坏进而诱发大面积的出砂,该研究对砂岩稠油油藏后期天然气吞吐的开发能起到很好的指导作用。
In viewpoints of the two aspects—theory and experiment,the influences of high water cut and natural gas huff-and-puff upon the sand problem in the medium and late periods of heavy oil reservoir development have been described. The impacts of water cut raising on the decrease of formation intensity such as sand index,elastic modulus and so on and moreover the change of corresponding formation filtration laws are also analyzed in theory.At the same time, by means of physical model experiments,the damage of water cut rise and natural gas huff-and-puff to these formations have been proved.The experiment shows that,with the huff-and-puff of natural gas and the rise of water cut,the breakdown pressure of the perforation holes and sanding pressure are reduced obviously,and furthermore the partial singlepoint damage has been induced into large-area sanding.The studies have played much better guiding role for the development of natural gas huff-and-puff in the late stage of sandstone heavy oil reservoirs
关键词(KeyWords)：
稠油油藏;高含水;天然气吞吐;出砂分析
heavy oil reservoir;high water cut;natural gas huff-and-puff;sand problem analysis
基金项目(Foundation):
作者(Author):
王登庆,李维忠,朱彩虹
WANG Deng-qing~1,LI Wei-zhong~2,ZHU Cai-hong~2 (1.China University of Petroleum
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