US4428072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic well log display method and apparatus
Assignee: Halliburton Logging Services Inc
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Filing: 1980-10-06
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Granted: 1984-01-24
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Expires: 2000-10-06
Abstract
Abstract Apparatus and method for recording seismic signals on a logging chart as a function of the depth of a logging sonde within a well bore includes apparatus for analyzing the seismic signals. The method utilizes the recording of information relating to the slope of a seismic signal received from the sonde. A recording trace is made using successive horizontal sweeps with no vertical deflection, and presence of a mark on the recording can indicate a positive slope for the seismic signal, and the absence of a mark can indicate a negative slope. An apparatus of the present invention utilizes this method to record well logging information obtained from seismic signals.
Inventors
- 👤 Samuel E. Johns, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:09
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/28; G01V1/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
In a method of recording a display of recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, the steps comprising: (a) transmitting said signals through said cable from said sonde to the earth's surface; (b) repeatedly receiving each of said signals as a changing signal voltage; (c) discriminating the polarity of slope of each said signal voltage; (d) producing an intermittent recording voltage during a designated polarity of slope of said signal voltage as a function of time, wherein said recording voltage is dichotomously modulated along a Z axis; (e) displacing a chart record through a distance which is a function of the distance said sonde is moved through said bore hole; and (f) recording each said recording voltage along a coordinate across said chart record as a dichotomous record located on said chart record in accordance with the position of said sonde within said well bore.
Claim 2
Dependent Claim
154 words
In a method of recording a display of recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, the steps comprising: (a) transmitting said signals through said cable from said sonde to the earth's surface; (b) repeatedly receiving each of said signals as a changing signal voltage; (c) discriminating the polarity of slope of each said signal voltage; (d) producing an intermittent recording voltage during a designated polarity of slope of said signal voltage as a function of time, wherein said recording voltage is dichotomously modulated along a Z axis; (e) displacing a chart record through a distance which is a function of the distance said sonde is moved through said bore hole; and (f) recording each said recording voltage along a coordinate across said chart record as a dichotomous record located on said chart record in accordance with the position of said sonde within said well bore.
Claim 3
Dependent Claim
85 words
In a method of displaying recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, the steps comprising: (a) transmitting said signals through said cable from said sonde to the earth's surface; (b) repeatedly receiving each signal of said signals as a changing voltage; (c) discriminating the polarity of slope of said voltage signal; and (d) indicating the occurrence of a designated polarity of slope as a visual dichotomous display along a linear coordinate as a function of time.
Claim 4
Dependent Claim
85 words
In a method of displaying recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, the steps comprising: (a) transmitting said signals through said cable from said sonde to the earth's surface; (b) repeatedly receiving each signal of said signals as a changing voltage; (c) discriminating the polarity of slope of said voltage signal; and (d) indicating the occurrence of a designated polarity of slope as a visual dichotomous display along a linear coordinate as a function of time.
Claim 5
Dependent Claim
149 words
Apparatus for recording a display of recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, comprising: (a) means for transmitting said signals through said cable from said sonde to the earth's surface; (b) means for repeatedly receiving each signal of said signals as a changing signal voltage; (c) means for discriminating the slope of each said signal voltage; (d) means for producing an intermittant recording voltage during a designated polarity of slope of said signal voltage as a function of time; (e) means for displacing a chart record through a distance which is a function of the distance said sonde is moved through said bore hole; (f) means for recording each said recording voltage along a coordinate across said chart record as dichotomous X-Z curve located on said chart record in accordance with the position of said sonde within said well bore.
Claim 6
Dependent Claim
149 words
Apparatus for recording a display of recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, comprising: (a) means for transmitting said signals through said cable from said sonde to the earth's surface; (b) means for repeatedly receiving each signal of said signals as a changing signal voltage; (c) means for discriminating the slope of each said signal voltage; (d) means for producing an intermittant recording voltage during a designated polarity of slope of said signal voltage as a function of time; (e) means for displacing a chart record through a distance which is a function of the distance said sonde is moved through said bore hole; (f) means for recording each said recording voltage along a coordinate across said chart record as dichotomous X-Z curve located on said chart record in accordance with the position of said sonde within said well bore.
Claim 7
Dependent Claim
19 words
The apparatus of claim 3, wherein said voltage producing means produces a voltage when said signal voltage is decreasing.
Claim 8
Dependent Claim
19 words
The apparatus of claim 3, wherein said voltage producing means produces a voltage when said signal voltage is increasing.
Claim 9
Independent Claim
162 words
A method of recording a display of recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, comprising the steps of: (a) transmitting the signals through the cable from the sonde to the surface; (b) repeatedly receiving each of the signals as a changing signal voltage; (c) predicting a trend of the changing signal voltage during a selected polarity of slope; (d) determining a predicted value from said trend; (e) measuring the actual value of the changing signal voltage; (f) producing an intermittent recording voltage whenever the measured value differs from the predicted value by more than a preselected amount; (g) displacing a chart record through a distance which is a function of the distance the sonde is moving through the well bore; and (h) recording the recording voltage along a coordinate across the chart record as a dichotomous record located on the chart in accordance with the position of the sonde within the well bore.
Claim 10
Independent Claim
162 words
A method of recording a display of recurrent seismic signals produced from a sonde moved by an electrical cable through a well bore, comprising the steps of: (a) transmitting the signals through the cable from the sonde to the surface; (b) repeatedly receiving each of the signals as a changing signal voltage; (c) predicting a trend of the changing signal voltage during a selected polarity of slope; (d) determining a predicted value from said trend; (e) measuring the actual value of the changing signal voltage; (f) producing an intermittent recording voltage whenever the measured value differs from the predicted value by more than a preselected amount; (g) displacing a chart record through a distance which is a function of the distance the sonde is moving through the well bore; and (h) recording the recording voltage along a coordinate across the chart record as a dichotomous record located on the chart in accordance with the position of the sonde within the well bore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |