Nova Patents
NO20004858L

Pressure pulse sensor

Abstract

A pressure pulse sensor (50) and associated methods create improved function and simplify the detection of pressure pulses. In a described embodiment, a hydrophone (50) comprises a stack (52) of disc-shaped lead titanium piezoelectric crystals (54) surrounded by an epoxy membrane (58) and has a mounting member (60) aligned with a center of mass (62) for the crystal stack (52). .

NO20004858L, drawing sheet 1
Sheet 1 of 1

Term

No projected expiry on record.

  1. Priority
  2. Filed
  3. Published
  4. Today

14 paragraphs in 1 section, as filed

(22) Starting day (24) Running day (41) Alm. avail.

(71) Seeking (72) Inventor (74) Proxy (54) Denomination (57) Summary

2000.09.27

2000.09.27

2001.04.05 (86) Entering date and application number (85) Continuation day (30) Priority

1999.10.04, US, 411078

Halliburton Energy Services Inc.,

2601 Beltline Road - Law Department, Dallas, TX 75006, US

James Robert Birchak, Spring, TX, US

Alvin B Miller, Alvarado, TX, US

John Woodrow Harrell, Waxahachie, TX, US

Bryns Zacco AS, 0106 Oslo

Hydrophone for use in a down-hole tool

A pressure pulse sensor (50) and associated methods create improved function and simplify the detection of pressure pulses. In a described embodiment, a hydrophone (50) comprises a stack (52) of disc-shaped lead titanium piezoelectric crystals (54) surrounded by an epoxy membrane (58) and has a mounting member (60) aligned with a center of mass (62) for the crystal stack (52). .

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