Apparatus for eliminating differential pressure surges

Details Apparatus for eliminating differential pressure surges Apparatus for eliminating differential pressure surges

1975-11-10

1976-11-30

Woodiel, Donald O.

Measuring and testing

Volume or rate of flow

Thermal type

73392, 73395, G01F 134, G01L 708

Patent

active

039941663

ABSTRACT:
An apparatus for use with a borehole monitoring system which senses downhole well conditions in a wellbore having a pump and a mud flow line characterized by short term pressure fluctuations for circulating drilling mud down the well. The apparatus includes a housing having a first chamber and a second chamber in pressure communication with the mud line. The chambers are separated by a resilient member capable of movement in response to pressure surges in either chamber and producing a corresponding pressure surge in the other chamber. The apparatus also includes a differential pressure sensor in pressure communication with both chambers and capable of producing an output corresponding to the pressure differential between the chambers.

REFERENCES:
patent: 2977991 (1961-04-01), Bauer
patent: 3400588 (1968-10-01), O'Connor
patent: 3595075 (1971-07-01), Dower

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