CN201536041U - Magnet for full-diameter core analyzer - Google Patents
Magnet for full-diameter core analyzer Download PDFInfo
- Publication number
- CN201536041U CN201536041U CN2009202225220U CN200920222522U CN201536041U CN 201536041 U CN201536041 U CN 201536041U CN 2009202225220 U CN2009202225220 U CN 2009202225220U CN 200920222522 U CN200920222522 U CN 200920222522U CN 201536041 U CN201536041 U CN 201536041U
- Authority
- CN
- China
- Prior art keywords
- magnet
- magnetic
- yoke plates
- plates
- magnet steel
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000004458 analytical method Methods 0.000 claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 229910000926 A-3 tool steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000010430 carbonatite Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 description 1
- 230000005311 nuclear magnetism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
Images
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
A magnet for full diameter core analysis appearance is applied to oil exploration development core analysis technical field. The magnetic pole mainly comprises pole plates, magnetic steel, pole rings, yoke plates and side yoke plates, wherein the two side yoke plates are mutually parallel and vertically fixed at two ends of the two yoke plates. The two side yoke plates and the two yoke plates form a frame body to form a closed magnetic loop for the magnet. And a group of magnetic steels are respectively fixed on the opposite inner side surfaces of the two yoke plates and are used for providing a magnetic source for the magnets. The magnetic steel is fixed with a polar plate on the opposite plane, which redistributes the magnetic force line. The outer periphery of the polar plate is provided with a polar ring which plays a role in gathering magnetism. The effect is as follows: the experimental analysis of the rock core with the full-diameter rock core diameter not more than 120mm can be met. The permanent magnet is a closed magnetic circuit, the magnetic leakage is less, and the initial field uniformity is good.
Description
Technical field
The utility model relates to petroleum exploration and development core analysis technical field, and particularly a kind of probe of nulcear magnetic resonance (NMR) rock sample analyzer is a kind of special-purpose magnet of whole core analysis instrument.
Background technology
At present, in the oil field prospecting exploitation, the nuclear magnetic resonance equipment that carries out core analysis mainly contains two classes: a class is the high-field nuclear magnetic resonance imaging system, this kind equipment function is strong, can carry out the two and three dimensions imaging and the processing of rock core, be widely used in the development experiments process determining of oil, water saturation, and the mensuration of complex parameters such as the again distribution of crude oil in the duct, phase permeability, displacement efficiency in the displacement process.But this quasi-instrument cost is extremely expensive, and volume is big, and operational environment requires high, generally only adapts to specialized laboratory and uses; Second class is a low-field nuclear magnetic resonance core analysis instrument, has nuclear-magnetism measurement function commonly used, can record multiple petrophysical parameter, and this kind equipment cost is relatively low, and volume is little, and amount is light, relatively is fit to oil field common laboratory and on-the-spot the use.Carry out the oil core analysis with nulcear magnetic resonance (NMR), can from a rock sample, obtain multiple parameters such as porosity (total porosity, effecive porosity, clay-bound water porosity etc.), movable fluid percentage, pore-size distribution and permeability, remarkable advantage with Non-Destructive Testing, a machine multi-parameter, a sample multi-parameter.But present low-field nuclear magnetic resonance core analysis instrument detecting area is little, and crannied for those, macroporous nonuniformity rock core can't be measured.
China oil field is based on the continental deposit oil field.Main feature is that reservoir exists serious anisotropism, so adopt nulcear magnetic resonance (NMR) whole core analysis and nulcear magnetic resonance (NMR) standard core analysis no less important.Whole core analysis is suitable for that those are crannied, macroporous heterogeneous core.Have a lot of secondary porosities (crack and deliquescent) in carbonatite, using whole core analysis can be more accurate.The full-hole core permeability is reflecting the influence in solution cavity and crack, and the standard core analysis does not comprise hole and crack usually, so the permeability that whole core analysis is surveyed is near true stratum condition.
The utility model content
The purpose of this utility model is: a kind of magnet that is used for the whole core analysis instrument is provided, is suitable for full diameter nulcear magnetic resonance (NMR) rock sample analyzer and uses, have and can be satisfied with the uniform magnetic field zone that full-hole core is measured, and the magnetic field good stability.Be fit to analyze crannied macroporous heterogeneous core.
The technical solution adopted in the utility model is: the magnet that is used for the whole core analysis instrument, mainly form by pole plate 1, magnet steel 2, polar ring 3, yoke plate 4 and side yoke plate 5, it is characterized in that: yoke plate 4 is for dull and stereotyped, the length of yoke plate 4 is between 560～600mm, width is between 400～550mm, and thickness is between 10～20mm.Side yoke plate 5 is dull and stereotyped, and side yoke plate 5 length are between 400～550mm, and width is between 300～450mm, and thickness is between 10～20mm.Two side yoke plates 5 are parallel to each other and are vertically fixed on the two ends of two yoke plates 4.Two side yoke plates 5 and two yoke plates 4 are formed a framework, form the loop of a closure for magnet.Opposed inside face at two yoke plates 4 is fixed with a magnet steel 2 respectively.The length of magnet steel 2 is between 460～500mm, and width is between 300～450mm, and thickness is between 10～20mm.Magnet steel 2 is as magnetic source.On the relative plane of magnet steel 2, be fixed with a pole plate 1 respectively.The length of pole plate 1 is between 480～520mm, and width is between 320～470mm, and thickness is between 10～20mm.Pole plate 1 plays the magnetic conduction effect.
What described yoke plate 4 and side yoke plate 5 adopted is the A3 steel.What magnet steel 2 adopted is 2: 17 SmCos (2: 17SmCo) permanent magnetic material.That pole plate 1 adopts is electrical pure iron DT4.
Described magnet steel 2 is that each magnetic patch is 50 * 50 * 16mm by 49 bonding forming of magnetic patch, and magnetizing direction is 16.
The manufacturing process that is used for the magnet of whole core analysis instrument:
Making comprises bonding, magnet steel 2 debugging of magnet steel 2 and assembles three steps;
1. magnet is bonding
Each magnet steel 2 is made up of 49 magnetic patch, but each magnetic patch all has stronger magnetic, and the polarised direction between each magnetic patch has identical projecting direction in the same coordinate system, so the magnetic force between each magnetic patch shows repulsion.By instrument with magnet steel 2 of the bonding one-tenth of these magnetic patch.
2. magnet debugging
The uneven reason in magnetic field has, the influence of magnet edge effect; The magnet machining error; The magnetic material performance difference; Temperature Influence.
The method of shimming is that mechanical compensation is regulated the relative position or the introducing of pole plate, adjusting air gap and had a snack thing; Electromagnetic compensation, shim coil.
The magnet that is used for the whole core analysis instrument, the shimming district of formation is a diameter 120mm, the cylinder of long 100mm, the working gas gap L=180mm of this magnet, B
0=0.102T, resonance frequency 4.34MHz, the unevenness in magnetic field≤2.0 * 10
-4
The beneficial effects of the utility model: the utility model is used for the magnet of whole core analysis instrument, can satisfy the core experiment analysis that the full-hole core diameter is no more than 120mm.Used permanent magnet is the closo magnetic circuit, and leakage field is few, the initial field good evenness.
Description of drawings
Fig. 1 is the magnet assembly structure schematic diagram that the utility model is used for the whole core analysis instrument.
Fig. 2 is the axle side schematic diagram that is used for the magnet of whole core analysis instrument.
Among the figure, 1. pole plate, 2. magnet steel, 3. polar ring, 4. yoke plate, 5. side yoke plate.
Embodiment
Embodiment 1: with a magnet that is used for the whole core analysis instrument is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model is used for the magnet of whole core analysis instrument, mainly is made up of pole plate 1, magnet steel 2, polar ring 3, yoke plate 4 and side yoke plate 5.
Opposed inside face at two yoke plates 4 is fixed with a magnet steel 2 respectively.The length 480mm of magnet steel 2, width are 450mm, and thickness is 16mm.Described magnet steel 2 is by 49 bonding forming of magnetic patch.Magnet steel 2 is as magnetic source.
On the relative plane of magnet steel 2, be fixed with a pole plate 1 respectively.The length of pole plate 1 is between the 500mm, and width is 470mm, and thickness is 20mm.Pole plate 1 plays the magnetic conduction effect.
What described yoke plate 4 and side yoke plate 5 adopted is the A3 steel.What magnet steel 2 adopted is 2: 17 SmCos (2: 17SmCo) be permanent magnetic material.That pole plate 1, polar ring 3 adopt is DT4.Polar ring 3 is embedded on the pole plate 1.
Claims (3)
1. magnet that is used for the whole core analysis instrument, mainly by pole plate (1), magnet steel (2), polar ring (3), yoke plate (4) and side yoke plate (5) are formed, it is characterized in that: yoke plate (4) is for dull and stereotyped, the length of yoke plate (4) is between 560～600mm, width is between 400～550mm, thickness is between 10～20mm, side yoke plate (5) is dull and stereotyped, the length of side yoke plate (5) is between 400～550mm, width is between 300～450mm, thickness is between 10～20mm, two side yoke plates (5) are parallel to each other and are vertically fixed on the two ends of two yoke plates (4), two side yoke plates (5) are formed a framework with two yoke plates (4), opposed inside face at two yoke plates (4) is fixed with a magnet steel (2) respectively, the length of magnet steel (2) is between 460～500mm, width is between 300～450mm, thickness is between 10～20mm, on the relative plane of magnet steel (2), be fixed with a pole plate (1) respectively, the length of pole plate (1) is between 480～520mm, width is between 320～470mm, and thickness is between 10～20mm.
2. the magnet that is used for the whole core analysis instrument according to claim 1 is characterized in that: what described yoke plate (4) and side yoke plate (5) adopted is the A3 steel, and what magnet steel (2) adopted is the 2:17 samarium-cobalt permanent-magnetic material, and that pole plate (1) adopts is electrical pure iron DT4.
3. the magnet that is used for the whole core analysis instrument according to claim 1 is characterized in that: described magnet steel (2) is that each magnetic patch is 50 * 50 * 16mm by 49 bonding forming of magnetic patch, and magnetizing direction is 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202225220U CN201536041U (en) | 2009-09-15 | 2009-09-15 | Magnet for full-diameter core analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202225220U CN201536041U (en) | 2009-09-15 | 2009-09-15 | Magnet for full-diameter core analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201536041U true CN201536041U (en) | 2010-07-28 |
Family
ID=42535818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202225220U Expired - Lifetime CN201536041U (en) | 2009-09-15 | 2009-09-15 | Magnet for full-diameter core analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201536041U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110511A (en) * | 2010-12-27 | 2011-06-29 | 诸暨意创磁性技术有限公司 | Magnetic box generating parallel and homogenous magnetic field |
| CN109254254A (en) * | 2018-09-10 | 2019-01-22 | 中国石油天然气股份有限公司 | permanent magnet for nuclear magnetic resonance device |
| CN113567540A (en) * | 2021-07-27 | 2021-10-29 | 安徽省国盛量子科技有限公司 | Steel wire rope nondestructive testing equipment, system and method |
-
2009
- 2009-09-15 CN CN2009202225220U patent/CN201536041U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110511A (en) * | 2010-12-27 | 2011-06-29 | 诸暨意创磁性技术有限公司 | Magnetic box generating parallel and homogenous magnetic field |
| CN102110511B (en) * | 2010-12-27 | 2012-08-08 | 诸暨意创磁性技术有限公司 | Magnetic box generating parallel and homogenous magnetic field |
| CN109254254A (en) * | 2018-09-10 | 2019-01-22 | 中国石油天然气股份有限公司 | permanent magnet for nuclear magnetic resonance device |
| CN113567540A (en) * | 2021-07-27 | 2021-10-29 | 安徽省国盛量子科技有限公司 | Steel wire rope nondestructive testing equipment, system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201347760Y (en) | Device for nuclear magnetic resonance measurement of high-temperature and/or high-pressure samples | |
| CN203966707U (en) | A kind of monolateral nulcear magnetic resonance (NMR) magnet structure of oval arcuation that adopts passive shimming | |
| CN102024546B (en) | Gradient permanent magnet for constant gradient field rock sample analyzer | |
| CN104122516A (en) | Electrical sheet steel magnetostriction measurement system and method | |
| CN201536041U (en) | Magnet for full-diameter core analyzer | |
| CN105280325A (en) | Multistage passive uniform-field permanent magnet for nuclear magnetic resonance detection | |
| CN101343998B (en) | High-temperature magnet of nuclear magnetic resonance logging instrument and preparation method thereof | |
| CN207408344U (en) | A kind of magnetic sensing probe caliberating device | |
| Ripka et al. | Characterisation of magnetic wires for fluxgate cores | |
| CN106125021B (en) | The measurement method of permeability magnetic material characteristic under a kind of quadrature bias magnetic field | |
| CN104865029B (en) | The cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure of the long centripetal excitation of permanent magnetism pipe | |
| CN201886855U (en) | Magnetic circuit for nuclear magnetic resonance microscopic detection chip | |
| Liu et al. | Investigating the characteristic of weak magnetic stress internal detection signals of long-distance oil and gas pipeline under demagnetization effect | |
| CN107917926B (en) | Portable nuclear magnetic resonance analyte sensors and Portable magnetic resonance analytical instrument | |
| CN101581772A (en) | High-uniformity permanent magnetic field device and preparation method thereof | |
| CN104299749B (en) | V-shaped permanent magnet device for generating static gradient magnetic field | |
| CN104907242B (en) | The long permanent magnetism pipe centripetal excitation cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure that magnetic field tracking compensates | |
| CN104865030B (en) | The double magnetic circuit symmetry excitation cylindrical hermetic magnetic field type electromagnetic vibration generator system magnetic structure that magnetic field tracking compensates | |
| CN100399479C (en) | Permanent magnet used for portable NMR appts. | |
| CN204269261U (en) | A kind of sensor | |
| US11860127B2 (en) | Eddy current probe based on Halbach array coil | |
| CN116256680B (en) | Passive shimming structure and method of Halbach magnet for magnetic resonance | |
| CN203616286U (en) | Lossless flaw detection device | |
| CN114384449B (en) | Three-dimensional space vector magnetism measuring device and method | |
| CN102110513B (en) | Magnetic circuit for detecting chip through nuclear magnetic resonance microscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |