US4366561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for testing a plurality of geophones
Assignee: Phillips Petroleum Co
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Filing: 1978-10-30
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Granted: 1982-12-28
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Expires: 1998-10-30
Abstract
Abstract In a seismic exploration system wherein a plurality of geophones are utilized to detect seismic waves and transduce the detected seismic waves into representative electrical signals, method and apparatus is provided whereby a plurality of remotely located geophones can be tested from a central location to determine if the remotely located geophones are operable. Leakage tests, continuity tests and levitate tests are performed on the plurality of remotely located geophones and the results of these tests are transmitted to a central location.
Inventors
- 👤 Fred T. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:06
CPC Classifications
G; G01; G01V; G01V13/00; G01V1/00; G01V1/16; G01V1/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
247 words
A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; said central control means comprising: means for generating a test command representative of a command to perform a geophone test; means for transmitting said test command to at least one of said plurality of remote geophone monitoring means; and means for receiving test data from at least one of said plurality of remote geophone monitoring means, said test data providing information as to the operational status of at least one geophone means; each of said plurality of remote geophone monitoring means comprising: means for receiving said test command from said central control means; means for supplying a reference voltage; a first switching means; means for closing said first switching means in response to said test command to thereby supply said reference voltage through said first switching means to said geophone means; means for measuring any voltage present between said geophone means and ground, the difference between said reference voltage and any voltage present between said geophone means and ground being representative of the leakage resistance between said geophone means and ground; and means for transmitting the leakage resistance between said geophone means and ground as said test data to said central control means.
Claim 2
Dependent Claim
247 words
A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; said central control means comprising: means for generating a test command representative of a command to perform a geophone test; means for transmitting said test command to at least one of said plurality of remote geophone monitoring means; and means for receiving test data from at least one of said plurality of remote geophone monitoring means, said test data providing information as to the operational status of at least one geophone means; each of said plurality of remote geophone monitoring means comprising: means for receiving said test command from said central control means; means for supplying a reference voltage; a first switching means; means for closing said first switching means in response to said test command to thereby supply said reference voltage through said first switching means to said geophone means; means for measuring any voltage present between said geophone means and ground, the difference between said reference voltage and any voltage present between said geophone means and ground being representative of the leakage resistance between said geophone means and ground; and means for transmitting the leakage resistance between said geophone means and ground as said test data to said central control means.
Claim 3
Dependent Claim
289 words
A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; said central control means comprising: means for generating a test command representative of a command to perform a geophone test; means for transmitting said test command to at least one of said plurality of remote geophone monitoring means; and means for receiving test data from at least one of said plurality of remote geophone monitoring means, said test data providing information as to the operational status of at least one geophone means; each of said plurality of remote geophone monitoring means comprising: means for receiving said test command from said central control means; means for supplying a reference voltage; a first switching means; a second switching means; means for closing said first switching means in response to said test command to thereby supply said reference voltage through said first switching means to a first terminal of said geophone means; means for closing said second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby induce a current flow through said geophone means; means for measuring any voltage present across said first terminal and said second terminal of said geophone means, any voltage present between said first terminal and said second terminal of said geophone means being proportional to the internal resistance of said geophone means; and means for transmitting the internal resistance of said geophone means as said test data to said central control means.
Claim 4
Dependent Claim
289 words
A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; said central control means comprising: means for generating a test command representative of a command to perform a geophone test; means for transmitting said test command to at least one of said plurality of remote geophone monitoring means; and means for receiving test data from at least one of said plurality of remote geophone monitoring means, said test data providing information as to the operational status of at least one geophone means; each of said plurality of remote geophone monitoring means comprising: means for receiving said test command from said central control means; means for supplying a reference voltage; a first switching means; a second switching means; means for closing said first switching means in response to said test command to thereby supply said reference voltage through said first switching means to a first terminal of said geophone means; means for closing said second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby induce a current flow through said geophone means; means for measuring any voltage present across said first terminal and said second terminal of said geophone means, any voltage present between said first terminal and said second terminal of said geophone means being proportional to the internal resistance of said geophone means; and means for transmitting the internal resistance of said geophone means as said test data to said central control means.
Claim 5
Dependent Claim
313 words
A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; said central control means comprising: means for generating a test command representative of a command to perform a geophone test; means for transmitting said test command to at least one of said plurality of remote geophone monitoring means; and means for receiving test data from at least one of said plurality of remote geophone monitoring means, said test data providing information as to the operational status of at least one geophone means; each of said plurality of remote geophone monitoring means comprising: means for receiving said test command from said central control means; means for supplying a reference voltage; a first switching means; a second switching means; means for closing said first switching means in response to said test command to thereby supply said reference voltage through said first switching means to a first terminal of said geophone means; means for closing said second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby set up a voltage across said first terminal and said second terminal of said geophone means to thereby levitate the mass of said geophone means; means for opening said first switching means and said second switching means to thereby release the mass of said geophone means, the voltage supplied from said geophone means in response to the releasing of the mass of said geophone means being representative of the response characteristics of said geophone means; and means for transmitting the response characteristics of said geophone means as said test data to said central control means.
Claim 6
Dependent Claim
313 words
A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; said central control means comprising: means for generating a test command representative of a command to perform a geophone test; means for transmitting said test command to at least one of said plurality of remote geophone monitoring means; and means for receiving test data from at least one of said plurality of remote geophone monitoring means, said test data providing information as to the operational status of at least one geophone means; each of said plurality of remote geophone monitoring means comprising: means for receiving said test command from said central control means; means for supplying a reference voltage; a first switching means; a second switching means; means for closing said first switching means in response to said test command to thereby supply said reference voltage through said first switching means to a first terminal of said geophone means; means for closing said second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby set up a voltage across said first terminal and said second terminal of said geophone means to thereby levitate the mass of said geophone means; means for opening said first switching means and said second switching means to thereby release the mass of said geophone means, the voltage supplied from said geophone means in response to the releasing of the mass of said geophone means being representative of the response characteristics of said geophone means; and means for transmitting the response characteristics of said geophone means as said test data to said central control means.
Claim 7
Independent Claim
119 words
A method for testing a geophone means comprising the steps of: generating a test command representative of a command to perform a geophone test; transmitting said test command from a central control means to a remote geophone monitoring means; closing a first switching means in response to said test command to thereby supply a reference voltage through said first switching means to said geophone means; measuring any voltage present between said geophone means and ground, the difference between said reference voltage and any voltage present between said geophone means and ground being representative of the leakage resistance between said geophone means and ground; and transmitting the leakage resistance between said geophone means and ground to said central control means.
Claim 8
Independent Claim
119 words
A method for testing a geophone means comprising the steps of: generating a test command representative of a command to perform a geophone test; transmitting said test command from a central control means to a remote geophone monitoring means; closing a first switching means in response to said test command to thereby supply a reference voltage through said first switching means to said geophone means; measuring any voltage present between said geophone means and ground, the difference between said reference voltage and any voltage present between said geophone means and ground being representative of the leakage resistance between said geophone means and ground; and transmitting the leakage resistance between said geophone means and ground to said central control means.
Claim 9
Independent Claim
155 words
A method for testing a geophone means comprising the steps of: generating a test command representative of a command to perform a geophone test; transmitting said test command from a central control means to a remote geophone monitoring means; closing a first switching means in response to said test command to thereby supply a reference voltage through said first switching means to a first terminal of said geophone means; closing a second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby induce a current flow through said geophone means; measuring any voltage present across said first terminal and said second terminal of said geophone means, any voltage present between said first terminal and said second terminal of said geophone means being proportional to the internal resistance of said geophone means; and transmitting the internal resistance of said geophone means to said central control means.
Claim 10
Independent Claim
155 words
A method for testing a geophone means comprising the steps of: generating a test command representative of a command to perform a geophone test; transmitting said test command from a central control means to a remote geophone monitoring means; closing a first switching means in response to said test command to thereby supply a reference voltage through said first switching means to a first terminal of said geophone means; closing a second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby induce a current flow through said geophone means; measuring any voltage present across said first terminal and said second terminal of said geophone means, any voltage present between said first terminal and said second terminal of said geophone means being proportional to the internal resistance of said geophone means; and transmitting the internal resistance of said geophone means to said central control means.
Claim 11
Independent Claim
180 words
A method for testing a geophone means comprising the steps of: generating a test command representative of a command to perform a geophone test; transmitting said test command from a central control means to a remote geophone monitoring means; closing a first switching means in response to said test command to thereby supply a reference voltage through said first switching means to a first terminal of said geophone means; closing a second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby set up a voltage across the said first terminal and said second terminal of said geophone means to thereby levitate the mass of said geophone means; opening said first switching means and said second switching means to thereby release the mass of said geophone means, the voltage supplied from said geophone means in response to the releasing of the mass of said geophone means being representative of the response characteristics of said geophone means; and transmitting the response characteristics of said geophone means to said central control means.
Claim 12
Independent Claim
180 words
A method for testing a geophone means comprising the steps of: generating a test command representative of a command to perform a geophone test; transmitting said test command from a central control means to a remote geophone monitoring means; closing a first switching means in response to said test command to thereby supply a reference voltage through said first switching means to a first terminal of said geophone means; closing a second switching means in response to said test command to thereby ground a second terminal of said geophone means to thereby set up a voltage across the said first terminal and said second terminal of said geophone means to thereby levitate the mass of said geophone means; opening said first switching means and said second switching means to thereby release the mass of said geophone means, the voltage supplied from said geophone means in response to the releasing of the mass of said geophone means being representative of the response characteristics of said geophone means; and transmitting the response characteristics of said geophone means to said central control means.
References Cited (Backward Citations)
US2653305A
Cited
US2917706A
Cited
US3351898A
Cited
US3566399A
Cited
USRE29580E
Cited
US3748638A
Cited
US4152691A
Cited
US3886494A
Cited
US3839707A
Cited
US4042906A
Cited
US4086504A
Cited
US4044351A
Cited
US3952283A
Cited
US4043175A
Cited
US4147222A
Cited
US4017833A
Cited
SU603931A1
Cited
US4134099A
Cited
US4166270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |