Method and apparatus for detecting and measuring gelled pigs in

Details Method and apparatus for detecting and measuring gelled pigs in Method and apparatus for detecting and measuring gelled pigs in

1994-02-14

1996-06-04

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

734321, 73DIG1, G01N 2918

Patent

active

055222641

ABSTRACT:
A method and apparatus for detecting and measuring gelled material (i.e. gelled pig) as it passes through a tubular by generating ultrasonic pulses at timed intervals which, in turn, are transmitted through said tubular and materials flowing therethrough at a fixed point along said tubular. These pulses are received after they have passed through said tubular and the materials and are processed to identify those pulses which travel through said gelled material as said gelled material passes by said fixed point. From the number of identified pulses, the length of the gelled pig can be determined.

REFERENCES:
patent: 5215781 (1993-06-01), Lowther
patent: 5343737 (1994-09-01), Baumoel
patent: 5417112 (1995-05-01), Rosenberg
"The Use of Gelly Pig Technology for Removal of Stuck Mechanical Pigs" by D. P. Nesbitt, OTC 6772, Houston, Texas May 6-9, 1991.

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