Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow
Patent
1978-09-25
1981-02-17
Leppink, James
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Measuring or indicating drilling fluid rate of flow
73155, 175206, E21B 2108
Patent
active
042509742
ABSTRACT:
Abnormal drilling conditions are detected by monitoring mud volume of the mud system or rate of change of the mud volume. In one embodiment, makeup mud is automatically added to the system as solids are removed from the mud. Abnormal conditions are indicated by when the rate of makeup mud addition differs from the rate of solids removal. The mud system is maintained at a substantially constant volume by means of tanks specially constructed to provide a small mud/air interface.
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Heilhecker Joe K.
Peters Beldon A.
Robinson, Jr. Leon H.
Exxon Production Research Company
Favreau Richard E.
Graham Robert L.
Leppink James
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