CN220108467U - Vibration reduction structure of gamma probe assembly and drill collar type azimuth gamma - Google Patents
Vibration reduction structure of gamma probe assembly and drill collar type azimuth gamma Download PDFInfo
- Publication number
- CN220108467U CN220108467U CN202321502029.0U CN202321502029U CN220108467U CN 220108467 U CN220108467 U CN 220108467U CN 202321502029 U CN202321502029 U CN 202321502029U CN 220108467 U CN220108467 U CN 220108467U
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- CN
- China
- Prior art keywords
- gamma
- probe assembly
- framework
- gamma probe
- tungsten
- 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.)
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Links
- 239000000523 sample Substances 0.000 title claims abstract description 37
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims abstract description 68
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 34
- 239000010937 tungsten Substances 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 33
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000013078 crystal Substances 0.000 claims abstract description 23
- 235000009518 sodium iodide Nutrition 0.000 claims abstract description 22
- 238000013016 damping Methods 0.000 claims abstract description 14
- 239000013464 silicone adhesive Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- -1 polytetrafluoroethylene rings Polymers 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses a vibration reduction structure of a gamma probe assembly, which comprises a tungsten barrel with a side window, wherein a sodium iodide crystal is placed in the tungsten barrel, the outer wall of the sodium iodide crystal and the inner wall of the tungsten barrel are sealed by more than two O-shaped sealing rings I, rubber pads are respectively arranged at two ends of the sodium iodide crystal, one end of the tungsten barrel is connected with a circuit framework, the other end of the tungsten barrel is connected with a framework joint, the circuit framework and the framework joint are respectively abutted against the adjacent rubber pads, and a rectangular connector is arranged on the circuit framework. The vibration damping structure disclosed by the utility model greatly improves the vibration resistance and the reliability of underground operation of the gamma probe assembly, and the gamma probe assembly adopting the vibration damping structure can still maintain the measurement precision under the random vibration of more than 10grms through the ground vibration test bed test, has no damage, and can ensure the measurement precision and the stability even if applied to a rotary guiding system with larger vibration.
Description
Technical Field
The utility model relates to the field of measurement while drilling in the petroleum drilling industry, in particular to a vibration reduction structure of a gamma probe assembly and collar type azimuth gamma in the field.
Background
In measurement while drilling in petroleum drilling engineering, since different strata have radioactivity with different intensities, azimuth gamma is used for judging lithology of the strata by measuring intensity of gamma rays and distinguishing stratum interfaces with different lithology. At present, no matter the probe-tube type azimuth gamma or the drill collar type azimuth gamma, most of the gamma rays are measured through sodium iodide crystals (Geiger-Muller tubes or scintillation counters), and the measurement while drilling is performed in the drilling process, and meanwhile, the sodium iodide crystals have higher vibration reduction requirements on instruments along with severe construction conditions such as high temperature, high pressure, vibration, impact and the like. The drill collar type azimuth gamma is generally a double gamma probe assembly, is generally applied to a rotary guide system, vibrates greatly during underground construction, and can cause work disorder, inaccurate counting rate, large error, low reliability and even damage if vibration reduction measures are insufficient.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a vibration reduction structure of a gamma probe assembly and collar type azimuth gamma.
In order to solve the technical problems, the utility model adopts the following technical scheme:
in a vibration damping structure for a gamma probe assembly, the improvement comprising: the tungsten tube with the side window is characterized in that a sodium iodide crystal is placed in the tungsten tube, more than two O-shaped sealing rings I are arranged between the outer wall of the sodium iodide crystal and the inner wall of the tungsten tube, rubber pads are respectively arranged at two ends of the sodium iodide crystal, one end of the tungsten tube is connected with a circuit framework, the other end of the tungsten tube is connected with a framework joint, the circuit framework and the framework joint are respectively abutted against the adjacent rubber pads, a rectangular connector is arranged on the circuit framework, after a circuit board is arranged in an inner cavity of the circuit framework, the inner cavity is filled and sealed by filling and sealing silicone adhesive, and the diameter of the filled and sealed silicone adhesive is consistent with that of the tungsten tube.
Furthermore, O-shaped sealing rings II are arranged on the circuit framework and the framework joint.
Furthermore, three polytetrafluoroethylene rings are sleeved on the gamma probe assembly.
Further, the tungsten cylinder is fixedly connected with the circuit framework and the framework joint through radial screws respectively.
In a collar type azimuth gamma, the improvement comprising: two sides of the drill collar body are respectively grooved, gamma probe assemblies using the vibration reduction structure are respectively placed in the two grooves, and after silica gel is filled in gaps between the gamma probe assemblies and the grooves, the grooves are sealed by using a sealing cover plate.
Further, the gamma probe assembly is mounted on the drill collar body by screws.
Further, the sealing cover plate is connected with the drill collar body through a fixing screw and is sealed by an O-shaped sealing ring III.
The beneficial effects of the utility model are as follows:
the vibration damping structure disclosed by the utility model greatly improves the vibration resistance and the reliability of underground operation of the gamma probe assembly, and the gamma probe assembly adopting the vibration damping structure can still maintain the measurement precision under the random vibration of more than 10grms through the ground vibration test bed test, has no damage, and can ensure the measurement precision and the stability even if applied to a rotary guiding system with larger vibration.
Drawings
FIG. 1 is an enlarged partial schematic view of a gamma probe assembly with the vibration damping structure disclosed in example 1 of the present utility model mounted to a drill collar body;
FIG. 2 is a schematic diagram of a collar-type azimuthal gamma ray configuration.
Reference numerals: 1-sealing cover plate, 2-O-shaped sealing ring III, 3-rectangular connector, 4-O-shaped sealing ring II, 5-potting silicone adhesive, 6-rubber pad, 7-O-shaped sealing ring I, 8-polytetrafluoroethylene ring, 9-sodium iodide crystal, 10-rubber pad, 11-tungsten cylinder, 12-skeleton joint, 13-circuit skeleton, 14-drill collar body and 15-gamma probe assembly.
Description of the embodiments
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Embodiment 1, as shown in fig. 1, the present embodiment discloses a vibration damping structure of a gamma probe assembly, which achieves the vibration damping purpose of the gamma probe assembly through multiple vibration damping measures. The device comprises a tungsten barrel 11 with a window on the side surface, a sodium iodide crystal 9 is placed in the tungsten barrel, two O-shaped sealing rings I7 are used for sealing between the outer wall of the sodium iodide crystal and the inner wall of the tungsten barrel, rubber pads 6 and 10 are respectively arranged at two ends of the sodium iodide crystal, one end of the tungsten barrel is fixedly connected with a circuit framework 13 through radial screws, the other end of the tungsten barrel is fixedly connected with a framework joint 12 through radial screws, the circuit framework and the framework joint are respectively abutted against adjacent rubber pads, a rectangular connector 3 is arranged on the circuit framework, and a gamma probe component is communicated with other electrical appliances through the rectangular connector. After the circuit board is arranged in the internal cavity of the circuit framework, the internal cavity is encapsulated by the encapsulating silicone adhesive 5, and the encapsulated and molded silicone adhesive is cylindrical, and the diameter of the encapsulated and molded silicone adhesive is consistent with that of the tungsten cylinder. And O-shaped sealing rings II4 are arranged on the circuit framework and the framework joint. Three polytetrafluoroethylene rings 8 are sleeved on the gamma probe assembly.
Specifically, the two ends of the sodium iodide crystal are respectively provided with an O-shaped sealing ring I for radial vibration reduction and are placed in a tungsten cylinder with a side window, the tungsten cylinder can shield gamma rays, so that the sodium iodide crystal can only collect stratum gamma rays from the side window of the tungsten cylinder, and the sodium iodide crystal has unidirectional property. Rubber pads are respectively arranged at two ends of a sodium iodide crystal in the tungsten cylinder and used for axial vibration reduction of the sodium iodide crystal, the circuit framework and the framework joint extrude the sodium iodide crystal and the two rubber pads in the tungsten cylinder, at the moment, the O-shaped sealing ring I and the two rubber pads are in a certain compression state, and after a circuit board is installed in an internal cavity of the circuit framework, the internal cavity is encapsulated into a cylinder shape by adopting potting silicone adhesive and a mold, so that the influence of vibration on the circuit board and other electronic devices is reduced.
As shown in fig. 2, this embodiment also discloses a collar type azimuth gamma, which is to slot two sides of the collar body 14, respectively, place a gamma probe assembly 15 using the vibration damping structure of this embodiment in the two slots, and seal the slots with a sealing cover plate 1 after filling silica gel in the gap between the gamma probe assembly and the slots. The gamma probe assembly is mounted on the drill collar body through screws. The sealing cover plate is connected with the drill collar body through a fixing screw and is sealed by an O-shaped sealing ring III 2.
Specifically, after the gamma probe assembly is arranged on the drill collar body through screws, high-temperature silica gel is smeared around the gamma probe assembly, gap filling and fixing are carried out, after the high-temperature silica gel is solidified, the sealing cover plate pre-compresses the O-shaped sealing ring II and the polytetrafluoroethylene ring through the fixing screws, so that the polytetrafluoroethylene ring is subjected to plastic deformation and secondary reinforcing and fixing, tolerance gaps generated by the gamma probe assembly and the drill collar body during machining are eliminated, the vibration resistance of an instrument is further improved, the sealing cover plate is a pressure-bearing structural member, and the O-shaped sealing ring III is arranged to prevent mud, water, oil and other mixtures from entering the groove, and normal operation of the instrument is ensured.
The process of installing the vibration reduction structure and the gamma probe component to the drill collar body disclosed by the embodiment is as follows: firstly, a sodium iodide crystal provided with an O-shaped sealing ring I is arranged in a tungsten cylinder, rubber pads are respectively arranged at two ends of the sodium iodide crystal, then a circuit framework, the tungsten cylinder and a framework joint are connected in a radial screw fixing mode, a rectangular connector is arranged on the circuit framework, a circuit board is arranged in an internal cavity of the circuit framework, the internal cavity of the circuit framework is encapsulated by encapsulating silicone adhesive by using an encapsulating mould, the appearance of the encapsulated silicone adhesive is consistent with the external diameter dimensions of the circuit framework, the tungsten cylinder and the like, the encapsulated silicone adhesive is integrally cylindrical, three polytetrafluoroethylene rings are arranged outside the cylinder at proper intervals, the three polytetrafluoroethylene rings are arranged in a drill collar body, finally, a gap between a gamma probe assembly and the drill collar body is filled with high-temperature silica gel, after the high-temperature silica gel is solidified, an O-shaped sealing ring III and a sealing cover plate are arranged, and the sealing cover plate and the drill collar body are connected through fixing screws.
Claims (7)
1. A vibration damping structure of a gamma probe assembly, characterized in that: the tungsten tube with the side window is characterized in that a sodium iodide crystal is placed in the tungsten tube, more than two O-shaped sealing rings I are arranged between the outer wall of the sodium iodide crystal and the inner wall of the tungsten tube, rubber pads are respectively arranged at two ends of the sodium iodide crystal, one end of the tungsten tube is connected with a circuit framework, the other end of the tungsten tube is connected with a framework joint, the circuit framework and the framework joint are respectively abutted against the adjacent rubber pads, a rectangular connector is arranged on the circuit framework, after a circuit board is arranged in an inner cavity of the circuit framework, the inner cavity is filled and sealed by filling and sealing silicone adhesive, and the diameter of the filled and sealed silicone adhesive is consistent with that of the tungsten tube.
2. The vibration damping structure of a gamma probe assembly of claim 1, wherein: and the circuit framework and the framework joint are respectively provided with an O-shaped sealing ring II.
3. The vibration damping structure of a gamma probe assembly of claim 2, wherein: and three polytetrafluoroethylene rings are sleeved on the gamma probe assembly.
4. The vibration damping structure of a gamma probe assembly of claim 1, wherein: the tungsten cylinder is fixedly connected with the circuit framework and the framework joint through radial screws respectively.
5. The utility model provides a drill collar formula position gamma which characterized in that: two sides of the drill collar body are respectively grooved, gamma probe components using the vibration reduction structure of claim 3 are respectively placed in the two grooves, and after silica gel is filled in a gap between the gamma probe components and the grooves, the grooves are sealed by a sealing cover plate.
6. The collar-type azimuth gamma of claim 5, wherein: the gamma probe assembly is mounted on the drill collar body through screws.
7. The collar-type azimuth gamma of claim 5, wherein: the sealing cover plate is connected with the drill collar body through a fixing screw and is sealed by an O-shaped sealing ring III.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321502029.0U CN220108467U (en) | 2023-06-13 | 2023-06-13 | Vibration reduction structure of gamma probe assembly and drill collar type azimuth gamma |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321502029.0U CN220108467U (en) | 2023-06-13 | 2023-06-13 | Vibration reduction structure of gamma probe assembly and drill collar type azimuth gamma |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220108467U true CN220108467U (en) | 2023-11-28 |
Family
ID=88873827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321502029.0U Active CN220108467U (en) | 2023-06-13 | 2023-06-13 | Vibration reduction structure of gamma probe assembly and drill collar type azimuth gamma |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220108467U (en) |
-
2023
- 2023-06-13 CN CN202321502029.0U patent/CN220108467U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |