| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: in compliance with first version, tight inlet of power cable and extra cable into borehole integrated with casing head and one inlet assembly comprises casing, nut, sealing resilient sleeve, casing inner surface part being made tapered. Sealing sleeve has tapered outer surface for seat in casing. Casing outer surface has thread to joint with nut that has internal annular ledge. Metal bush with retainer and pressure washer are arranged between said annular ledge and sealing sleeve top part. Casing inner surface has slot for said retainer. Additional pressure washer is arranged under sealing sleeve. Note here that sealing sleeve is furnished with cutout for cable entry in installation. Sealing resilient sleeve comprises axial holes for power cable, additional cable, in particular, logging cable, and control cable. In compliance with second version including two cable inlet assemblies, sealing resilient sleeve of one assembly comprises holes for power cable, while another inlet assembly comprises sealing resilient sleeve with holes for additional cable. ^ EFFECT: higher efficiency, decreased labor input. ^ 2 cl, 5 dwg |
