GB1266939A - - Google Patents
Info
- Publication number
- GB1266939A GB1266939A GB1266939DA GB1266939A GB 1266939 A GB1266939 A GB 1266939A GB 1266939D A GB1266939D A GB 1266939DA GB 1266939 A GB1266939 A GB 1266939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- mass
- resonant frequency
- borehole
- ascertained
- 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
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
- G01V7/005—Measuring gravitational fields or waves; Gravimetric prospecting or detecting using a resonating body or device, e.g. string
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
1,266,939. Gravity meters. ESSO PRODUCTION RESEARCH CO. July 29, 1969, No. 38082/69. Heading G1N. The value of g is measured by the natural resonant frequency of a wire carrying a mass at its lower end. As shown for measuring g in a borehole so that the density of surrounding strata may be ascertained, a tungsten wire 117 Fig. 7, is supported between the poles of a magnet 135, with a mass 115 at its lower end. The wire is included in the feedback circuit of an amplifier 157 Fig.17, to produce oscillations at its resonant frequency, which are fed through a filter 161 to meter 163 and counter 165. Facilities are provided for (a) ensuring that the wire is vertical, (b) damping the wire during transit, (c) enclosing the wire in an evacuated chamber at a raised temperature, (d) supporting the instrument section in a vacuum flask.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3808269 | 1969-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1266939A true GB1266939A (en) | 1972-03-15 |
Family
ID=10401054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1266939D Expired GB1266939A (en) | 1969-07-29 | 1969-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1266939A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2421573A (en) * | 2004-12-23 | 2006-06-28 | Schlumberger Holdings | Borehole viscometer-densimeter |
| US7194902B1 (en) | 2004-12-23 | 2007-03-27 | Schlumberger Technology Corporation | Apparatus and method for formation evaluation |
| US7222671B2 (en) | 2004-12-23 | 2007-05-29 | Schlumberger Technology Corporation | Apparatus and method for formation evaluation |
| CN109709620A (en) * | 2019-02-26 | 2019-05-03 | 中国科学院测量与地球物理研究所 | A kind of absolute gravimeter |
-
1969
- 1969-07-29 GB GB1266939D patent/GB1266939A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2421573A (en) * | 2004-12-23 | 2006-06-28 | Schlumberger Holdings | Borehole viscometer-densimeter |
| US7194902B1 (en) | 2004-12-23 | 2007-03-27 | Schlumberger Technology Corporation | Apparatus and method for formation evaluation |
| US7222671B2 (en) | 2004-12-23 | 2007-05-29 | Schlumberger Technology Corporation | Apparatus and method for formation evaluation |
| CN109709620A (en) * | 2019-02-26 | 2019-05-03 | 中国科学院测量与地球物理研究所 | A kind of absolute gravimeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1266311A (en) | ||
| GB1105491A (en) | System for measurement of static force field gradients | |
| GB1013182A (en) | Improvements in ice detector | |
| ES215463A1 (en) | Methods for logging the formations traversed by a borehole | |
| GB1280997A (en) | Improvements in or relating to fluid density transducers | |
| GB1266939A (en) | ||
| US2657581A (en) | Gravity meter | |
| GB1234823A (en) | Electrical mass meter | |
| GB1175586A (en) | Measuring of Fluid Density | |
| US2480808A (en) | Multigrid ionization chamber | |
| Belin | A radiosonde method for atmospheric potential gradient measurements | |
| GB1095257A (en) | Measuring the specific gravity or density of gases and apparatus therefor | |
| GB1086628A (en) | Improvements in or relating to the measurement of mass flow rate of gases | |
| GB954059A (en) | Microwave power density probe | |
| GB1168921A (en) | A Process for Continuously Measuring the Quality of an Agglomerate | |
| GB786113A (en) | Improvements in liquid densitometers | |
| Van Veen et al. | An optical maser strainmeter | |
| GB1126450A (en) | Process and device for measuring the density of fluid substances | |
| SU496519A1 (en) | Device for recording seismic processes | |
| GB1086276A (en) | Improvements in means for measuring the fullness of oscillating chill-moulds containing molten material | |
| GB1016915A (en) | Pressure transducers | |
| GB892094A (en) | Improvements in a method and means for measuring the viscosity of a fluid | |
| GB1298519A (en) | Gas density measuring apparatus | |
| GB843475A (en) | Improvements in or relating to instrument for and method of airborne gravitational geophysical exploration | |
| GB1112855A (en) | Linear dimension measuring devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |