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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jul 2015, 36 (4)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Structure design of and experimental research on a two-stage laval foam breaker for foam fluid recycling


Wang Jin-song, Cao Pin-lu* and Yin Kun

College of Construction Engineering, Jilin University, 130026, Changchun, China

*Corresponding Authorís Email :



Publication Data

Paper received:

25 June 2014


Revised received:

30 September 2014


Re-revised received:

01 January 2015



07 February 2015



Environmental, economical and efficient antifoaming technology is the basis for achievement of foam drilling fluid recycling The present study designed a novel two-stage laval mechanical foam breaker that primarily uses vacuum generated by Coanda effect and Laval principle to break foam. Numerical simulation results showed that the value and distribution of negative pressure of two-stage laval foam breaker were larger than that of the normal foam breaker. Experimental results showed that foam-breaking efficiency of two-stage laval foam breaker was higher than that of normal foam breaker, when gas-to-liquid ratio and liquid flow rate changed. The foam-breaking efficiency of normal foam breaker decreased rapidly with increasing foam stability, whereas the two-stage laval foam breaker remained unchanged. Foam base fluid would be recycled using two-stage laval foam breaker, which would reduce the foam drilling cost sharply and waste disposals that adverse by affect the environment.     



 Key words

Environmental antifoaming, Foam drilling, Foam fluid recycling, Foam-breaking efficiency, Two-stage laval foam breaker



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