GB497329A - Single cable electrical well-logging - Google Patents
Single cable electrical well-loggingInfo
- Publication number
- GB497329A GB497329A GB16429/37A GB1642937A GB497329A GB 497329 A GB497329 A GB 497329A GB 16429/37 A GB16429/37 A GB 16429/37A GB 1642937 A GB1642937 A GB 1642937A GB 497329 A GB497329 A GB 497329A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- borehole
- impedance
- electrode
- natural earth
- 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
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
- G01V3/24—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current using ac
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
497,329. Prospecting for minerals &c. STANDARD OIL DEVELOPMENT CO. June 14, 1937, No. 16429. Convention date, June 25, 1936. [Class 37] Apparatus for deter. mining the electrical characteristics of earth strata traversed by a borehole, comprises means for lowering at least one of a pair of electrodes which are fed by alternating - current, the impedance of the circuit and the natural earth potential existing between the electrodes being measured independently and substantially simultaneously. One electrode may be suspended in the borehole by a single cable conductor and the other electrode located at surface level, or both electrodes of the cable can be spaced within the borehole. The generator 33 supplies electrodes 6, 12 and the impedance is measured on instrument 34, a high resistance instrument 32 for measuring the natural earth potentials being also connected to the electrodes but electrically separated from the supply circuit by a filter 31. If the velocity of the electrode or electrodes down the well is high, the indications of natural earth potentials correspond to a generated alternating-current, and the frequency of the impedance measuring circuit is made several times higher than this, the device 31 then being substituted by a high-pass filter. The measurements may also be made by alternately switching over the instruments that respond to each component. U.S.A. Specification 2,037,306 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US497329XA | 1936-06-25 | 1936-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB497329A true GB497329A (en) | 1938-12-14 |
Family
ID=21961399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16429/37A Expired GB497329A (en) | 1936-06-25 | 1937-06-14 | Single cable electrical well-logging |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB497329A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2853087A1 (en) * | 2003-03-27 | 2004-10-01 | Jerome Bourg | Device for locating aquiferous layers comprises galvanometer placed on surface |
US20180100941A1 (en) * | 2014-11-25 | 2018-04-12 | Cgg Services Sas | Modeling an elastic stiffness tensor in a transverse isotropic subsurface medium |
WO2022213433A1 (en) * | 2021-04-08 | 2022-10-13 | 桂林理工大学 | Encapsulated geoelectric extraction electrode and use method thereof |
-
1937
- 1937-06-14 GB GB16429/37A patent/GB497329A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2853087A1 (en) * | 2003-03-27 | 2004-10-01 | Jerome Bourg | Device for locating aquiferous layers comprises galvanometer placed on surface |
US20180100941A1 (en) * | 2014-11-25 | 2018-04-12 | Cgg Services Sas | Modeling an elastic stiffness tensor in a transverse isotropic subsurface medium |
US10520627B2 (en) * | 2014-11-25 | 2019-12-31 | Cgg Services Sas | Modeling an elastic stiffness tensor in a transverse isotropic subsurface medium |
WO2022213433A1 (en) * | 2021-04-08 | 2022-10-13 | 桂林理工大学 | Encapsulated geoelectric extraction electrode and use method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2249769A (en) | Electrical system for exploring drill holes | |
US2347794A (en) | Well surveying device | |
US2296176A (en) | Well survey method and apparatus | |
US2368532A (en) | Well survey method and apparatus | |
US2190686A (en) | Mineral exploration | |
CN110094195A (en) | A kind of oil-base mud electric imaging logging method based on recessed electrode structure | |
US2357178A (en) | Method and apparatus for investigating boreholes | |
ES386094A1 (en) | Methods and apparatus for investigating the spontaneous potential of earth formations | |
Ketola | Some points of view concerning mise-a-la-masse measurements | |
US2268137A (en) | Electrical well-logging system | |
GB497329A (en) | Single cable electrical well-logging | |
US2132807A (en) | Single cable electrical well-logging | |
US2304051A (en) | Means for analyzing and determining the characteristics of the geologic strata | |
US2273363A (en) | Method for electrical investigation of cased drill holes | |
US2133786A (en) | Method of and apparatus for determining the dip of the earth's substrata | |
US2233420A (en) | Method of and apparatus for exploring drill holes | |
US2317304A (en) | Apparatus for the electrical surveying of boreholes | |
US2872637A (en) | Electrical resistivity well logging methods and apparatus | |
US2239466A (en) | Method of and apparatus for electrical investigation of drill holes | |
US2414899A (en) | Well logging | |
US2268138A (en) | Electrical well-logging system | |
US2234956A (en) | Exploration with electric impulses | |
US1652227A (en) | Method of investigating the nature of subterranean strata | |
US2165213A (en) | Electrical transient well logging | |
US2265978A (en) | Alternating current electrologging of well bores |