Process and device for generating signals which can be transmitted in a well
AssigneePrecision Drilling Technology Service GmbH
InventorHermann Jungerink
Life of this patent
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Abstract
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.
Claims17
Process for generating signals which can be transmitted from above ground to a receiver located below ground in a well, wherein the volume flow of a fluid pump arranged above ground, which conveys fluid from a fluid tank through the interior of a drill string to the bottom of a well, is temporally changed, and wherein the temporal change of the volume flow of the fluid pump is caused by a change of the drive speed of the fluid pump, with the drive speed not falling below a minimum speed for maintaining a minimum volume flow.
Device for generating signals which can be transmitted from above ground to a receiver located below ground in a well, comprising:
- a fluid pump arranged above ground, which conveys fluid from a fluid tank through the interior of a drill string to the bottom of a well,
- a desired value transmitter for adjusting the drive speed of the fluid pump,
- a signal generator for generating signals, which are intended for transmission to a receiver located below ground in a well, and
- an interface which temporally changes the desired value set at the desired value transmitter as a function of the signals of the signal generator.
Process for generating signals which can be transmitted from above ground to a receiver located below ground in a well, wherein the angular velocity of a rotatably-driven drill string located in the well is temporally changed.
Dependencies are inferred from the claim text.