塔河底水砂岩油藏氮气泡沫驱技术研究

doi:10.11885/j.issn.1674-5086.2015.01.19.02

摘要/Abstract

摘要： 塔河三叠系砂岩油藏为块状底水油藏，与中国其他砂岩油藏相比，其埋藏深、底水能量强，具有油藏温度高、矿化度高和钙镁离子含量高的特点，进入开发中后期以后油井水淹现象严重，低产低效井多，由于高温高盐的特征，一般的化学驱提高采收率方法很难适用。在调研砂岩油藏提高采收率技术的基础上，结合塔河底水砂岩油藏实际特点，开展了氮气泡沫驱室内实验研究，确定了氮气泡沫驱的可行性，并在现场进行了先导试验。实践表明，氮气泡沫驱技术是底水砂岩油藏有效的提高采收率手段。

关键词: 塔河油田, 底水油藏, 砂岩, 高温高盐, 氮气泡沫

Abstract: Compared with other sandstone reservoirs in China, the Tahe triassic sandstone reservoir is a block bottom water reservoir, which is characteristic of deeply buried reservoir, active bottom water, high formation temperature and high salinity(excessive calcium and magnesian ion). Therefore the number of low production and low effectiveness wells is increasing when the oil wells are flooded in the middle-later developed period. In addition, the chemical flooding to improve oil recovery does not apply due to high temperature and high salinity. Based on the researches on enhanced oil recovery technology in sandstone reservoir and the practical characteristics of bottom water sandstone reservoir of Tahe Oilfield, nitrogen foam flooding experiments were made and the feasibility was proved. Then the pilot test on field was conducted, and it showed that the nitrogen foam flooding technology is an effective method of improving oil recovery in bottom water sandstone reservoir.

Key words: Tahe Oilfield, bottom water reservoir, sandstone, high temperature and high salinity, nitrogen foam

中图分类号:

TE357.4

刘学利, 胡文革, 谭涛, 张林艳, 刘蕊. 塔河底水砂岩油藏氮气泡沫驱技术研究[J]. 西南石油大学学报(自然科学版), 2016, 38(6): 105-110.

LIU Xueli, HU Wenge, TAN Tao, ZHANG Linyan, LIU Rui. Researches on Nitrogen Foam Flooding Technology in the Tahe Triassic Sandstone Reservoir[J]. 西南石油大学学报(自然科学版), 2016, 38(6): 105-110.

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http://journal15.magtechjournal.com/Jwk_xnzk/CN/Y2016/V38/I6/105

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