Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1978-05-19
1980-10-14
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367115, 367908, 73290V, 181400, 175 40, G01S 968
Patent
active
042285305
ABSTRACT:
The level of mud in the mud return line of a rotary drilling rig is determined by cutting a hole in the top of the line and securing over the hole the saddle shaped base flange of a heat insulated sound tube supporting the ultra sonic transducer of an air coupled sonar distance measuring apparatus. The apparatus continuously digitally displays the average mud level. Upon a first manual command the apparatus makes a printed record of the level, time, and date.
The apparatus give an alarm signal whenever the time averaged level departs a predetermined amount from a previously set datum level. When a second manual command is exercised the alarm is discontinued and a record of level is made and the datum level is reset to the existing level. The departure measuring means is reactivated to give an alarm signal upon sufficient departure of mud level from the new datum level.
A third manual command makes a record and turns off the recorder while a trip is being made and until the third command controller is reset.
REFERENCES:
patent: 2659046 (1953-11-01), Arps
patent: 2914686 (1959-11-01), Clements et al.
patent: 2927301 (1960-03-01), Booth et al.
patent: 2943296 (1960-06-01), Fryklund
patent: 3100023 (1963-08-01), Clements
patent: 3184969 (1965-05-01), Bolton
patent: 3316997 (1967-05-01), McCoy
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patent: 3757285 (1973-09-01), Ferre
patent: 3821726 (1974-06-01), Chang
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patent: 4000650 (1977-01-01), Snyder
patent: 4090407 (1978-05-01), Shuler et al.
patent: 4101865 (1978-07-01), Schurr
patent: 4114441 (1978-09-01), Magri
"Sonic Sand Detector," Oceanography International Corp., (Brochure), Oct. 1974.
"Echometer Fluid Level Instrument," Echometer Co. (Brochure), no date.
"Echo Graph," Electroacoustic GmbH, no date, (Brochure).
"Mud Bug," Frazier Resources, Inc., 1977, (Brochure).
Conley Ned L.
Farley Richard A.
Robinson Murray
Rose David A.
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