PRESSURE SEAL FOR PUMPING INSTRUMENTS THROUGH DRILL ROD

• Main Authors: JONES, EMRYS H., JR, LAUER, STEPHEN D
• Format: Patent
• Language: English; French
• Published: 22.03.1983
• Edition: 3
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PIPES; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

A sealing device for placement between a rotary drill motor and a drill rod for use in pumping instruments down the drill rod comprising a housing having an axial flow passage therethrough, which is split along its longitudinal axis and formed of two half sections joined together. A sealing gasket is provided at each end of the housing which sealingly engages a pipe pressed thereagainst in alignment with the flow passage. A bore is provided through the housing in fluid communication with the flow passage and at an acute angle therewith, the bore being partially formed in each of the half members. Packing means are provided in the bore for sealingly engaging a cable extending therethrough.