直井-水平井组合蒸汽氮气泡沫驱物模实验

doi:10.7623/syxb201201011

石油学报 ›› 2012, Vol. 33 ›› Issue (1): 90-95.DOI: 10.7623/syxb201201011

直井-水平井组合蒸汽氮气泡沫驱物模实验

张忠义　周　游　沈德煌　聂凌云　李小玲

中国石油勘探开发研究院提高石油采收率国家重点实验室　北京　100083

收稿日期:2011-06-18 修回日期:2011-09-15 出版日期:2012-01-25 发布日期:2012-03-22
通讯作者: 张忠义
作者简介:张忠义，男，1972年1月生，2008年获中国地质大学（北京）博士学位，现为中国石油勘探开发研究院高级工程师，主要从事稠油热采开发基础理论和应用技术研究。
基金资助:
国家重大科技专项“稠油/超稠油开发关键技术”（2011ZX05012）资助。

Physical modeling experiments on steam nitrogen foam flooding for a vertical and horizontal well combination

ZHANG Zhongyi　ZHOU You　SHEN Dehuang　NIE Lingyun　LI Xiaoling

Received:2011-06-18 Revised:2011-09-15 Online:2012-01-25 Published:2012-03-22

摘要/Abstract

摘要：

稠油开采在蒸汽吞吐（CSS）阶段出现的高渗层蒸汽窜流影响了开采效果，利用稠油油藏水平井开采可以增加泄油面积，增强导流能力，提高最终采收率，但用水平井开采稠油更易受窜流通道的影响，造成水平井段动用不均、高含水等问题。笔者采用三维物理模拟手段研究了直井-水平井组合蒸汽氮气泡沫驱提高采收率机理，用不同驱替阶段平面和剖面三维温度场数据评价了蒸汽驱转蒸汽氮气泡沫驱温度场发育效果。在高含水下采用氮气泡沫辅助蒸汽驱后，含水率先降、后升，最终采收率为63.3%，相比蒸汽驱提高了6.2%。蒸汽氮气泡沫驱降低了蒸汽单井突进和蒸汽超覆现象，增加井间波及区域，扩大了整体的波及体积，改善了蒸汽驱效果。

关键词: 稠油开采, 氮气泡沫, 蒸汽驱, 水平井, 三维温度场

Abstract:

Steam channeling of high-permeability layers in the cyclic steam stimulation stage in heavy oil production will affect the development results. The development with horizontal wells in heavy-oil reservoirs can enhance an ultimate recovery by increasing the drain area and flow conductivity, however, it is more susceptible to water channeling, resulting in some development problems including uneven production of different sections and high water cut in horizontal wells. We applied a three-dimensional physical model in studying the enhanced oil recovery mechanism of steam nitrogen-foam flooding with a vertical and horizontal well combination and evaluated the development effect of temperature fields after transformation from steam flooding to steam nitrogen-foam flooding by using plane data and vertical 3D temperature field profile data of different flooding stages. The results showed that water cut first rose then fell down when the production under high water cut conditions was assisted by steam nitrogen-foam flooding, and the ultimate recovery was 63.3%, a net increment of 6.2% compared to that by steam flooding only. Therefore, steam nitrogen-foam flooding can reduce phenomena including steam breakthrough of an individual well and steam overlap, increase swept region between wells, enlarge the holistic swept volumes and improve the effect of steam flooding.

Key words: heavy oil recovery, nitrogen foam, steam flooding, horizontal well, 3D temperature field

张忠义　周　游　沈德煌　聂凌云　李小玲. 直井-水平井组合蒸汽氮气泡沫驱物模实验[J]. 石油学报, 2012, 33(1): 90-95.

ZHANG Zhongyi　ZHOU You　SHEN Dehuang　NIE Lingyun　LI Xiaoling. Physical modeling experiments on steam nitrogen foam flooding for a vertical and horizontal well combination[J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(1): 90-95.

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直井-水平井组合蒸汽氮气泡沫驱物模实验

Physical modeling experiments on steam nitrogen foam flooding for a vertical and horizontal well combination

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