Boring or penetrating the earth – Automatic control
Patent
1984-11-19
1986-08-19
Suchfield, George A.
Boring or penetrating the earth
Automatic control
73155, 175 38, 175 48, E21B 2108, E21B 4706
Patent
active
046064150
ABSTRACT:
A method and system for detecting and identifying abnormal drilling conditions. It determines the normal pump speed-pressure ratio over the range of usual working conditions. It measures the output pressure from the pump. And it measures the speed of the pump. Then it detects a change from the normal pump speed-pressure ratio which indicates abnormal conditions. Identification of the abnormal condition depends upon whether the pump speed increased above normal or the output pressure decreased below normal. If the former, the volume of drilling fluid returning is observed in order to identify one of three conditions. If the latter, the number of decreases greater than a predetermined extent are counted over a predetermined interval of time which may indicate malfunctioning pump valve or valves.
REFERENCES:
patent: 3058532 (1962-10-01), Alder
patent: 3324717 (1967-06-01), Brooks et al.
patent: 3470971 (1969-10-01), Dower
patent: 3517553 (1970-06-01), Williams et al.
patent: 3595075 (1971-07-01), Dower
patent: 3726136 (1973-04-01), McKean et al.
patent: 4253530 (1981-03-01), Sharki et al.
patent: 4295366 (1981-10-01), Gibson et al.
Gray Jr. Charles L.
Rundell Herbert A.
Williams Thomas M.
Gillespie Ronald G.
Kulason Robert A.
O'Loughlin James J.
Suchfield George A.
Texaco Inc.
LandOfFree
Method and system for detecting and identifying abnormal drillin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for detecting and identifying abnormal drillin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for detecting and identifying abnormal drillin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-389872