E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/18 (2006.01)
Patent
CA 2462774
In a process for generating signals which can be transmitted from above ground to a receiver located below ground in a well, the volume flow of a fluid pump (1) arranged above ground, which conveys fluid from a fluid tank (8) through the interior of a drill string to the bottom of a well, is temporally changed. The temporal change of the volume flow of the fluid pump (1) is caused by a change of the drive speed of the fluid pump (1), with the drive speed not falling below a minimum speed for maintaining a minimum volume flow.
Dans un processus de production de signaux pouvant être transmis à partir d'un endroit au-dessus du sol à un récepteur situé sous le sol dans un puits, on change temporairement le débit volumétrique d'une pompe à fluide (1) placée hors terre, qui transporte du fluide d'un réservoir (8) à l'intérieur d'un train de tiges de forage vers le fond d'un puits. Cette variation temporaire du débit volumétrique de la pompe (1) est provoquée par une variation de la vitesse de creusement de la pompe à fluide (1), ladite vitesse n'étant jamais inférieure à une valeur minimum pour maintenir un débit volumétrique minimum.
Precision Drilling Technology Services Gmbh
Ridout & Maybee Llp
Weatherford Energy Services Gmbh
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