2[1]Devine TJORR C S,JOE P R M,RICKARDS A R.Relationship between polymeric fragment damage and damage removal and the orginal rock and proppant pack permeabihty[C].SPE52128,1999.
3[2]NORMAN L R,HOLLENHEAK K H,HARRIS P C.Fracture conductivity impairment removal[C],SPE19732,1989.
4[3]TJORR Tow-Pin R M,BRANNON H D,RICKARDS A R.Remedial treatment for polymeric damage removal provides improved well productivity[C].SPE25214,1993.
5Malone M R, Nelson S G, Jackson R. Enzyme breaker technology increases production, Grayburg Jackson Field, Southeast New Mexico: A case history[Z]. SPE 59 709, 2000.
