FIELD: soil or rock drilling; mining.
SUBSTANCE: invention relates to induction apparatus (10) for heating heavy oil reservoir (100) having at least one casing pipe (20) and at least one inductor (30) that is arranged within casing pipe (20), intermediate space (40) is formed between inductor (30) and casing pipe (20), and a large number of centring devices (50) are disposed in the intermediate space (40) in the axial direction of the induction device, wherein centring devices are in contact both with casing pipe (20) and with inductor (20); and intermediate space (40) is filled with filling material (60).
EFFECT: invention provides an economical way of increasing the life and stability of the device.
11 cl, 7 dwg
