METHOD AND APPARATUS FOR MONITORING FLUID FLOW THROUGH A DRILL STRING

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...

Full description

Saved in:
Bibliographic Details
Main Authors PURCELL, PAT W, ANNAS, ROBERT I, HOCHSPRUNG, DENNIS H, WRIGHT, ALAN C
Format Patent
LanguageEnglish
French
Published 12.01.1982
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:Application Number: CA19790330849