Process for hydraulically fracturing oil and gas wells

摘要: A wellbore ( 10 ) in an earth formation 12 having a casing 14 and plurality of pay or production zones 32, 34, 36 provided the formation. coiled tubing string 18 from reel 20 is injected by injector 24 into for first perforating section 38 at each zone single pass as shown FIG. 1 . Next, utilized hydraulic fracturing individually lowermost 32 to uppermost ). Each isolated fracturing. An upper packer 44 54 above isolation lower 56 sand plug 50 isolating outermost end Swab cups 58, A, B, B) are also zones.