EXPERIMENT AND APPLICATION OF AN ANNULAR FOAM BREAKER FOR FOAM DRILLING FLUID (RESEARCH NOTE)
EXPERIMENT AND APPLICATION OF AN ANNULAR FOAM BREAKER FOR FOAM DRILLING FLUID (RESEARCH NOTE)
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DOI：
10.5829/idosi.ije.2012.25.01b.09
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发表时间：
2012-02
期刊：
影响因子：
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通讯作者：
P. Cao;Z. Hu;Baoyi Chen;Zhichuan Zheng;W. Ma
中科院分区：
文献类型：
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作者：
P. Cao;Z. Hu;Baoyi Chen;Zhichuan Zheng;W. Ma
环形破泡器是一种利用科安达效应产生的真空和剪切力来破碎泡沫的破碎器。在井筒流动模拟环流实验台上对其破除钻井泡沫的效果进行了测试。实验结果表明，为了获得较高的破泡效率，环空破泡剂的工作压力应大于0.6 MPa，泡沫钻井液中稳定剂的浓度应尽可能低。此外，环状泡沫破碎剂对湿泡沫体系的破坏效果更好。当气液比小于100时，泡沫破碎率可达85%。从位于四川中国的元坝10井的现场试验结果可知，环空破泡剂具有较高的破泡效率，26英寸的泡沫钻井进尺672m，仅消耗泡沫溶液400m~3。一节。环空破泡剂的使用大大降低了配方处理剂用量和用水量，大大降低了泡沫钻井成本。
The annular foam breaker is one which uses the vacuum and shear force generated by the Coanda effect to break foam. Its effectiveness in destroying drilling foam has been test in wellbore flow simulation loop experimental stand. Experimental results showed that the operating pressure of the annular foam breaker should be larger than 0.6MPa and the stabilizers concentration of the foam drilling fluid should be as low as possible so as to obtain higher foam-breaking efficiency. Moreover, the annular foam breaker was more effective to destroy wet foam system. When the gas to liquid ratio of the foam was lower than 100, the foam-breaking efficiency was up to 85%. From the results obtained in Yuanba-10 well located in Sichuan province of China, it can be drawn that the annular foam breaker had a high efficiency that only 400 m3 foaming solutions was consumed with total 672m of foam drilling footage in 26 in. section. The consumption of ingredient additives and water were decreased drastically with using the annular foam breaker, which reduced the foam drilling cost sharply.