Dynamometric measuring assembly for a drill pipe equipped with means of radiotransmission

• US 5,144,298 A
• Filed: 07/22/1991
• Issued: 09/01/1992
• Est. Priority Date: 07/27/1990
• Status: Expired due to Term

• Current Assignee: ELF Exploration Production (Cook Composites and Polymers)
• Original Assignee: Societe Nationale Elf Aquitaine (Cook Composites and Polymers)
• Inventors: Henneuse, Henry
• Primary Examiner(s): Eldred, J. Woodrow
• Application Number:
  US07/733,644
• Time in Patent Office: 407 Days
• Field of Search: 340/853, 340/854, 340/855, 340/854.6, 175/40, 166/250, 181/105, 181/108
• US Class Current: 340/854.6
• CPC Class Codes: E21B 47/007 Measuring stresses in a pipe string or casing for locating blocked portions of pipes E21B47/09
• CPC Class Codes: E21B 47/13 by electromagnetic energy, e.g. radio frequency
• CPC Class Codes: G08C 17/02 using a radio link

Abstract

Dynamometric measuring assembly for a drill pipe, formed by a measuring device comprising, firmly attached to the rotating pipe, sensors and a first electronic circuit for conditioning the signals supplied by these sensors, a radiotransmitter mounted in a fixed manner on the rotating pipe and an acquisition unit. According to the invention, the measuring assembly furthermore comprises a radio receiver mounted on the rotating pipe and intended to allow the remote control of the measuring device.

Claims

1. Dynamometric measuring device for a drill pipe comprising:

a) sensors attached to the drill pipe;

b) a first electronic circuit attached to the drill pipe for conditioning the signals supplied by the sensors;

c) a radio transmitter mounted in a fixed manner on the drill pipe for transmitting the signals supplied by the sensors;

d) a remote acquisition unit for receiving said signals; and

e) a radio receiver for receiving signals transmitted by the remote acquisition unit, said radio receiver comprising adjustment means for adjusting the measuring device in response to signals transmitted by the remote acquisition unit.

2. Device according to claim 1, further comprising means allowing said radio receiver to search, by scanning, optimum transmission frequencies transmitted by the acquisition unit.

3. Device according to claim 1, wherein said adjustment means permits parameters of the measuring device to be adjusted by the remote acquisition unit.

4. Device according to claim 3, wherein said parameters include measurement channel selection.

5. Device according to claim 3, wherein said parameters include band pass or anti-aliasing filter modification parameters.

6. Device according to claim 3, wherein said parameters include gain amplifier settings.