Measuring and testing – Borehole or drilling – Downhole test
Patent
1978-05-08
1980-06-24
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
73597, 364422, E21B 4700
Patent
active
042089069
ABSTRACT:
A remote sensor for the measurement of the amount of gas present in the drilling fluid or "mud" in an offshore well-drilling operation, for the purpose of giving prompt warning of geologic conditions conducive to the occurrence of a blow-out. An acoustic projector projects an acoustic wave of fixed wavelength through the mud returning upwardly from the borehole. The wave is received by a first array of acoustic receivers locked in a known phase relationship with the projector. Changes in the speed of sound due to changing relative amounts of mud and gas produce a shift in frequency of the acoustic wave which is proportional to the speed of sound in the mud/gas mixture. The change in frequency is electronically detected and scaled to yield the value of the speed of sound, from which the mud to gas mass ratio is calculated by means of a computer. A second array of acoustic receivers is arranged with the first array and the projector to form a phase-shift velocimeter which uses the value of the speed of sound obtained in conjunction with the mud/gas mass ratio measurement to calculate the velocity of the mud flow, which is used as a further indicator of potential blowout conditions.
REFERENCES:
patent: 2806372 (1957-09-01), Arps
patent: 3103812 (1963-09-01), Bourne, Jr. et al.
patent: 3580092 (1971-05-01), Scarps
patent: 3603145 (1971-09-01), Morris
patent: 3646808 (1972-03-01), Leonard
patent: 3710615 (1973-01-01), Johnson et al.
patent: 3750766 (1973-08-01), Thompson et al.
patent: 3760891 (1973-09-01), Gadbois
patent: 3821726 (1974-06-01), Chang et al.
patent: 3839914 (1974-10-01), Modisette et al.
patent: 3861211 (1975-01-01), Dewan
patent: 3901078 (1975-08-01), McShane
patent: 3906780 (1975-09-01), Baldwin
patent: 3910110 (1975-10-01), Jefferies et al.
patent: 3954008 (1976-05-01), Yamamoto et al.
patent: 3982432 (1976-09-01), Hammond
patent: 4003256 (1977-01-01), Donelan et al.
patent: 4080837 (1978-03-01), Alexander et al.
patent: 4109523 (1978-08-01), Teyssandier
patent: 4112735 (1978-09-01), McKnight
patent: 4114438 (1978-09-01), Muraz et al.
patent: 4114439 (1978-09-01), Fick
Interstate Electronics Corp.
Myracle Jerry W.
LandOfFree
Mud gas ratio and mud flow velocity sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mud gas ratio and mud flow velocity sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mud gas ratio and mud flow velocity sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1476352