Method and apparatus for monitoring fluid flow through a drill s

Details Method and apparatus for monitoring fluid flow through a drill s Method and apparatus for monitoring fluid flow through a drill s

1978-06-30

1980-02-12

Pitts, Harold I.

Communications: electrical

Condition responsive indicating system

Specific condition

340611, G08B 1900

Patent

active

041886240

ABSTRACT:
A method and apparatus are disclosed for monitoring fluid flow through a drilling string in order to detect a wash-out or a restriction. The apparatus includes circuitry for sensing the rate of pumping of a fluid, circuitry for sensing the pressure of the fluid being pumped, a function generator to process a pressure signal and a pump rate signal and generate a fluid flow indication signal, circuitry to actuate an alarm, and an alarm. The method includes sensing the pumping rate, sensing the pressure, and generating a fluid flow indication signal that gives an indication of the relationship between the pumping rate and pressure.

REFERENCES:
patent: 3800277 (1974-03-01), Patton
Geolograph/Medearis, World Wide Equip. Ctlg., pp. 4-21 (1978).
Geolograph/Medearis, Export Prices, (1978).
Geolograph Company, Recorders, etc., pp. 2-5 (1978).
Moor, Preson L., Drilling Practices Manual, Petroleum Publishing Company, Tulsa, Oklahoma, Chapter 7, Rotary Drilling Hydraulics, pp. 94-105.

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