Downhole pressure gauge and convertor

Details Downhole pressure gauge and convertor Downhole pressure gauge and convertor

G - Physics

01

L

G01L 9/02 (2006.01) E21B 47/01 (2006.01) E21B 47/06 (2006.01) G01L 9/00 (2006.01)

Patent

CA 2117290

The apparatus disclosed is a type of downhole pressure gauge to be used to measure and record pressure information about oil and gas wells. The apparatus measures flunctuations in pressure by means of a mechanical pressure sensitive device, such as a Bourdon tube, and records and stores this information by converting mechanical movement, associated with pressure changes as detected by the mechanical pressure sensitive device, into corresponding voltage changes across a potentiometer which are stored in an electronic memory board. The change in voltage over time corresponds to the change in well pressure over time, thereby providing important information to the well operator. Also disclosed is a method for measuring well pressure by means of combining a mechanical pressure sensitive device with an electrical system and an electronic memory board for storing the measurements. Also disclosed is a kit, whereby an existing downhole mechanical pressure gauge can be converted to a mechanical/electrical combination by the replacement of certain parts.

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