Measuring and testing – Borehole or drilling – Downhole test
Patent
1988-04-04
1989-10-31
Levy, Stewart J.
Measuring and testing
Borehole or drilling
Downhole test
175 39, E21B 4400
Patent
active
048768863
ABSTRACT:
Downhole Torque and Rate of Penetration are utilized to develop indications of formations having high porosity or of the development of an undergauge bit. Downhole torque is normalized by dividing it by the product of downhole weight on bit and bit size to produce Dimensionless Torque while Rate of Penetration is normalized by dividing it by the product of downhole weight on bit and rotary speed. The values of Dimensionless Torque and Normalized Rate of Penetration are compared to "normally" expected values of these quantities. Deviations from the normal values are taken as an indication of the occurrence of bit penetration of a highly porous formation or of the development of an undergauge or damaged bit.
REFERENCES:
patent: Re21297 (1939-12-01), Mizell
patent: 2372576 (1945-03-01), Hayward
patent: 2669871 (1954-02-01), Lubinski
patent: 3368400 (1968-02-01), Jorden et al.
patent: 3541852 (1970-11-01), Brown et al.
patent: 3581564 (1971-06-01), Young
patent: 3774445 (1973-11-01), Rundell et al.
patent: 3782190 (1974-01-01), Pittman
patent: 3898880 (1975-08-01), Kelseaux et al.
patent: 3916684 (1975-11-01), Rundell
patent: 4064749 (1977-12-01), Pittman et al.
patent: 4359898 (1982-11-01), Tanguy et al.
patent: 4627276 (1986-12-01), Burgess et al.
patent: 4655300 (1987-04-01), Davis, Jr. et al.
patent: 4685329 (1987-08-01), Burgess
Bible Matthew
Falconer Ian
Lesage Marc
Anadrill, Inc.
Borst Stephen L.
Levy Stewart J.
O'Shea Kevin D.
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