The invention provides a heavy oil thermal recovery process method, which includes that well completion is carried out for casing pipes above an oil reservoir by the aid of heat insulation casing pipes, each heat insulation casing pipe comprises an inner tube, an outer tube, a heat insulation material and a coupling, each outer tube is sleeved outside the corresponding inner tube, each heat insulation material is sandwiched between the corresponding inner tube and the corresponding outer tube, and each coupling is sleeved at one end of the corresponding outer tube. Under the condition of well completion by the aid of the vacuum heat insulation casing pipes, dynamic adjustment of layered steam driving steam quantity is realized via well head adjustment, construction process is simplified, cost is reduced, and controllability of steam injection is improved.