Dipole/monopole acoustic transmitter, methods for making and using same in down hole tools
First Claim
Patent Images
1. An acoustic transmitter for use in a well bore comprising:
- (a) a housing having a longitudinal axis defining at least one piston chamber having at least one discharge port, wherein the discharge port is oriented to discharge acoustic energy away from the tool in a discharge direction transverse to the longitudinal axis; and
(b) a piston positioned in the at least one piston chamber, and slidable parallel to the longitudinal axis.
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Abstract
A sonic or acoustic tool is disclosed which includes a transmitter with reduced transmitter spawned noise. The transmitters are either monopole or dipole depending on the orientation of ports in a chamber divided by a piston driven by an actuator. The transmitter size is limited only by the diameter of the tools itself because the transmitters are oriented within the tool parallel to the axis of the tool.
42 Citations
22 Claims
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1. An acoustic transmitter for use in a well bore comprising:
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(a) a housing having a longitudinal axis defining at least one piston chamber having at least one discharge port, wherein the discharge port is oriented to discharge acoustic energy away from the tool in a discharge direction transverse to the longitudinal axis; and (b) a piston positioned in the at least one piston chamber, and slidable parallel to the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A tool for use in a bore hole comprising bore hole fluid, the tool comprising:
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(a) a tool body having a longitudinal axis; (b) an acoustic wave transmitter supported on the tool body, the transmitter comprising; (i) a housing defining at least one piston chamber having at least one discharge port, wherein the discharge port is oriented to discharge acoustic energy away from the tool in a discharge direction transverse to the longitudinal axis; (ii) a piston positioned in the at least one piston chamber, and slidable parallel to the longitudinal axis; (c) at least one receiver supported by the body. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of transmitting an acoustic wave into a well bore, having a longitudinal axis, with a piston positioned within the well bore, the method comprising:
(a) moving the piston in a direction parallel with the longitudinal axis to produce an acoustic wave in a discharge direction transverse to the longitudinal axis. - View Dependent Claims (16, 17, 18)
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19. A method of recording acoustic waves in a well bore, having a longitudinal axis with a piston and receiver positioned within the well bore, the method comprising:
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(a) moving the piston in a direction parallel with the longitudinal axis to discharge acoustic energy into the well bore in a discharge direction transverse to the longitudinal axis; (b) recording the acoustic waves generated by the piston. - View Dependent Claims (20, 21, 22)
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Specification