CONDUCTING DOWNHOLE ANNULAR PRESSURE MEASUREMENTS

Brand	Owner	Address	Description
PWD	BAROID TECHNOLOGY, INC.	3000 NORTH SAM HOUSTON PARKWAY EAST HOUSTON TX 77032	conducting downhole annular pressure measurements for others while drilling oil and gas wells;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The outlet pressure of a pump that fluctuates rapidly, as is typical of high pressure multiplex pumps, is sensed in a pressure line leading from the main flow line to a damping mechanism. The damping mechanism comprises a pair of small spaced openings, which are preferably adjustable in size. The damping mechanism is ideally a pair of needle valves placed in series so the pressure downstream of the second needle valve fluctuates considerably less than upstream of the first needle valve. The damped pressure is sensed to provide an input to real time graphs showing various pertinent pressure measurements involving the application of pressure, e.g. to monitor downhole tools in hydrocarbon wells. The downhole tools may be fluid driven motors, whipstocks, packers, wiper plugs and the like. In the case of fluid driven or mud motors, a base line pressure taken when the motor is idling is compared to the pressure when the motor is drilling to detect the onset of motor stall.