In {TAIL ~ some embodiments}, {HEAD ~ the systems}, methods, and heaters are used for treating a subsurface formation 
In
In { TAIL ~ some embodiments } , { HEAD ~ the systems } , methods , and heaters are used for treating a subsurface formation
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH