Measuring torque and hook load during drilling

Details Measuring torque and hook load during drilling Measuring torque and hook load during drilling

1984-01-04

1985-10-29

Birmiel, Howard A.

Measuring and testing

Borehole or drilling

Downhole test

175 45, 364422, E21B 4500, E21B 4900

Patent

active

045494312

ABSTRACT:
In a computer aided method of detecting problems in the drilling of a well, the hook load is measured while free rotating, while moving the string out of the well for an incremental distance, and while moving the drill string into the hole the same incremental distance. These hook loads are used in determining the effective friction factor of the drill string as a function of depth. The hook loads and free rotating torque are plotted as a function of time in order to produce an indication of hole problems.

REFERENCES:
patent: 3324717 (1967-06-01), Brooks et al.
patent: 3740739 (1973-06-01), Griffin, III et al.
patent: 3800277 (1974-03-01), Patton et al.
patent: 3866468 (1975-02-01), Smith et al.
patent: 4250758 (1981-02-01), Pitts, Jr. et al.
patent: 4285236 (1981-08-01), Chien
patent: 4382381 (1983-05-01), Soeiinah
patent: 4384483 (1983-05-01), Dellinger et al.

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