PROCEDE ET INSTALLATION DE DETECTION EN SURFACE DE SIGNAUX ELETROMAGNETIQUES EMIS AU FOND D'UN PUITS

Information regarding drilling parameters in a drilling operation is communicated from the drill head by a downhole radiating antenna 16 in the well 10. The antenna 16 propogates electromagnetic waves 18 through the surrounding formations, the drill string 20 and the drilling rig 12. Measurements ar...

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Bibliographische Detailangaben
1. Verfasser:	BABOUR KAMAL
Format:	Patent
Sprache:	fre
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	Information regarding drilling parameters in a drilling operation is communicated from the drill head by a downhole radiating antenna 16 in the well 10. The antenna 16 propogates electromagnetic waves 18 through the surrounding formations, the drill string 20 and the drilling rig 12. Measurements are made of the magnetic field produced at the surface caused by the current flowing along the drill string 20 and the rig 12. These measurements may be made by a directional magnetometer 24 which measures the magnetic field in a direction orthogonal to the axis of the drill string. Use is envisaged in both onshore and offshore wells.