2Jacqueline Awadzi, Jess Babbitt, Steve Holland, Kent Snyder ,Tom Saucer, and Kelly. Downhole Capillary Soap Injiection Improves Production[ J]. SPE 52153,1999.
3Silverman, S A, Butler W, Ashby T, and Snyder K. Concentric Capillary Tubing Boosts Production of LowPressure Gas Wells [ J ]. Petroleum Engineer International, 1997,70(10) :71 - 73.
4Lea, J F. "How to Tell if Plunger Lift Will Work in Your- Well. Amoco Production Company Research Department- Technology Paper, F93 - P - 83, pp. 1 - 5, November 1993.
5cabral P, RGierega C, Costanza P and Suriano A A. Production Optimization Using the Capillary Technology in the Loma La Lata Field[J]. SPE 107374,2007.
6Bolding J L, Hartman L E, and Szymczak S J. Resurrecting a Low - Pressure Gas Well Offshore : Through - Tubing Foamer Injection via a Capillary Tubing System asnd a Specialized WRSCSSV[ J]. SPE 110086,2007.
7McWiilianms J P and Gonzales. Downhole Capillary Surfactant Injection System Pilot on Low Pressure Gas Wells in the San Juan Basin[J]. SPE 94293,2005.
