GB1440521A - Well logging data processing technique - Google Patents
Well logging data processing techniqueInfo
- Publication number
- GB1440521A GB1440521A GB3610473A GB3610473A GB1440521A GB 1440521 A GB1440521 A GB 1440521A GB 3610473 A GB3610473 A GB 3610473A GB 3610473 A GB3610473 A GB 3610473A GB 1440521 A GB1440521 A GB 1440521A
- Authority
- GB
- United Kingdom
- Prior art keywords
- data
- values
- displacement
- correlation
- overlapping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
- G01V11/002—Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Algebra (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Paper (AREA)
Abstract
1440521 Data processing SCHLUMBERGER INLAND SERVICES Inc 30 July 1973 [31 July 1972] 36104/73 Heading G4A A machine implemented method of aligning first and second sets of separately derived well logging data, which may be subject to relative depth displacement, includes the steps of deriving normalized correlation functions corresponding to a pluraity of displacements between a selected group of first data and selected groups of second data, repeating for different groups of first data to obtain overlapping normalized correlation functions, and combining at least some of the overlapping functions to obtain an improved correlation function. In the preferred method, the overlapping correlation functions are averaged and the displacement between the two sets of data is determined and is used to align the data with respect to depth. Minimum and maximum values of each correlation function may be identified and selectively scaled so as to be accentuated relative to the remaining values of the function, values below a predetermined level, corresponding to reliable correlation between the two logs, being excluded. Various procedures are described for improving the reliability of the results and for interpolating displacement values between displacement values deemed to be reliable.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27634772A | 1972-07-31 | 1972-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1440521A true GB1440521A (en) | 1976-06-23 |
Family
ID=23056290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3610473A Expired GB1440521A (en) | 1972-07-31 | 1973-07-30 | Well logging data processing technique |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2198660A5 (en) |
GB (1) | GB1440521A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4297879A (en) * | 1979-07-02 | 1981-11-03 | Howells Anthony P | Well logging correlation method and apparatus |
US4346593A (en) * | 1978-10-10 | 1982-08-31 | Dresser Industries, Inc. | Well logging correction method and apparatus |
US4352166A (en) * | 1978-10-10 | 1982-09-28 | Dresser Industries, Inc. | System and method for visual display of well-logging data |
DE3942239A1 (en) * | 1989-12-21 | 1991-07-04 | Wacker Chemie Gmbh | Level sounding system for material forming phase boundary in container - measures length of cable deployed to lower probe into container |
CN112464054A (en) * | 2019-09-09 | 2021-03-09 | 中国石油天然气股份有限公司 | Logging data processing method and device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4847793A (en) * | 1986-09-24 | 1989-07-11 | The Babcock & Wilcox Company | Updating physical property correlations with laboratory data |
-
1973
- 1973-07-27 FR FR7327664A patent/FR2198660A5/fr not_active Expired
- 1973-07-30 GB GB3610473A patent/GB1440521A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4346593A (en) * | 1978-10-10 | 1982-08-31 | Dresser Industries, Inc. | Well logging correction method and apparatus |
US4352166A (en) * | 1978-10-10 | 1982-09-28 | Dresser Industries, Inc. | System and method for visual display of well-logging data |
US4297879A (en) * | 1979-07-02 | 1981-11-03 | Howells Anthony P | Well logging correlation method and apparatus |
DE3942239A1 (en) * | 1989-12-21 | 1991-07-04 | Wacker Chemie Gmbh | Level sounding system for material forming phase boundary in container - measures length of cable deployed to lower probe into container |
CN112464054A (en) * | 2019-09-09 | 2021-03-09 | 中国石油天然气股份有限公司 | Logging data processing method and device |
Also Published As
Publication number | Publication date |
---|---|
FR2198660A5 (en) | 1974-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |