CN211598634U - Improved sidewall contact device with wear resistance - Google Patents
Improved sidewall contact device with wear resistance Download PDFInfo
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- CN211598634U CN211598634U CN202020016225.7U CN202020016225U CN211598634U CN 211598634 U CN211598634 U CN 211598634U CN 202020016225 U CN202020016225 U CN 202020016225U CN 211598634 U CN211598634 U CN 211598634U
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- contact device
- plug
- sidewall contact
- thrust pin
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Abstract
The utility model relates to an improve sidewall contact device with wearability, include: the device comprises a shell, a sensor and a controller, wherein a tungsten carbide wear-resistant coating is sprayed on the outer wall of the shell, which is in contact with a logging wall, the inner wall of the shell is provided with a thrust pin hole, and the thrust pin hole is positioned at the lower end of the shell and is positioned on the opposite side of the wear-resistant coating; the supporting legs are vertically arranged on the side wall of the shell, the upper ends of the supporting legs are movably connected with the shell, and the supporting legs and the thrust pin holes are located on the same bus; the plug is connected with the shell, and a convex telescopic thrust pin is arranged on the side wall of the plug and is used for being matched with the thrust pin hole. The utility model discloses the defect that the original structure of sidewall contact device exists among the prior art has made optimization and has improved to original structural renewal has been made. The problems of serious abrasion of the shell of the original push device and structural defects are solved, the service life of the push device is prolonged, the overall change is small, and the method is simple and effective.
Description
Technical Field
The utility model relates to an oil logging equipment technical field especially relates to an improvement sidewall contact device with wearability.
Background
In some instruments in the petroleum logging equipment, besides well logging in the middle, well wall-sticking logging such as a nuclear magnetic resonance logging instrument, a density logging instrument and the like is also carried out, and the equipment is required to be used in a well wall sticking mode when logging work is carried out underground. In order to provide good contact between the tool and the borehole wall, the tool is typically used against the borehole wall with a sidewall contact shoe to assist the tool in contacting the borehole wall. The casing of the sidewall contact device can generate friction with a well wall for a long time in the working process, and the long-time friction can cause one side of the sidewall contact device casing to be seriously worn.
Disclosure of Invention
Therefore, the utility model provides an improve sidewall contact device with wearability for overcome sidewall contact device among the prior art and paste the serious problem of wall of a well side wearing and tearing.
To achieve the above object, the present invention provides an improved sidewall contact device with wear resistance, comprising:
the outer wall of the shell, which is in contact with the logging wall, is sprayed with a wear-resistant coating to improve the wear resistance of the shell, and the inner wall of the shell is provided with a thrust pin hole for fixing a plug, wherein the thrust pin hole is positioned at the lower end of the shell and is positioned on the opposite side of the wear-resistant coating;
the supporting legs are vertically arranged on the side wall of the shell, the upper ends of the supporting legs are movably connected with the shell, and the supporting legs are contacted with the logging wall and the shell is attached to the opposite logging wall by supporting the supporting legs; the support legs and the thrust pin holes are located on the same generatrix of the shell;
the plug is connected with the shell, and a convex telescopic thrust pin is arranged on the side wall of the plug and is used for being matched with the thrust pin hole to fix the plug.
Further, the spraying area of the wear-resistant coating accounts for 20% -40% of the cylindrical side area of the shell 1.
Further, the spraying thickness of the wear-resistant coating is 0.1-0.5 mm.
Further, the thrust pin is connected with the plug through an elastic component.
Furthermore, the lower side of the joint of the shell and the supporting leg is provided with a groove, and the size of the groove is the same as that of the supporting leg and is used for accommodating the supporting leg.
Further, the lower end of the plug is fixedly connected with a specific logging instrument.
Furthermore, an annular groove is formed in the side wall of the upper end of the plug, and a sealing ring is arranged in the groove and used for sealing the logging instrument.
Furthermore, the cross section of the supporting leg is rectangular, and a chamfer is arranged at the lower end of the supporting leg so as to increase the contact area between the supporting leg and the well wall.
Furthermore, the sectional area of the root part of the upper end of the supporting leg is larger than that of the lower end of the supporting leg, and a chamfer is arranged at the position where the sectional area changes.
Furthermore, a plurality of annular bulges and annular depressions are arranged on the side wall of the upper end of the pushing casing and are used for being connected with equipment at the upper end.
Compared with the prior art, the beneficial effects of the utility model reside in that, structure after the improvement makes thrust pinhole and sidewall contact device landing leg in the same side, has avoided the thinner side of wall thickness to paste the problem of wall of a well motion, has increased the wear resistance of sidewall contact device casing. Meanwhile, the improved structure adds a layer of wear-resistant coating on one side of the sidewall contact casing, so that the wear resistance of the sidewall contact casing is further improved. The utility model discloses the defect that the original structure of sidewall contact device exists among the prior art has made optimization and has improved to original structural renewal has been made. The problems of serious abrasion of the shell of the original push device and structural defects are solved, the service life of the push device is prolonged, the overall change is small, and the method is simple and effective.
Further, according to the thrust pin with the elastic component arranged in the plug, after the plug is inserted into the specified position of the shell, the thrust pin can bounce and enter the thrust pin hole formed in the shell, at the moment, the thrust pin can respectively restrain the plug in the radial direction and the axial direction so as to fix the plug at the specified position, and the stability of the improved structure of the push ram is improved.
Furthermore, the casing is provided with a groove at the joint of the casing and the supporting leg, when the sidewall contact device enters and exits the borehole, the supporting leg can be retracted and stored in the groove, and the supporting leg is stored in the groove to prevent the sidewall of the borehole from wearing the supporting leg when the sidewall contact device enters and exits the borehole, so that the service life of the sidewall contact device structure is further prolonged.
Furthermore, the plug is fixedly connected with the logging instrument, and after the plug is inserted into the shell, the plug is fixedly connected with the shell, so that the shell is fixedly connected with the logging instrument relatively.
Further, through set up the sealing washer in plug upper end, can prevent that external dust from passing through inside the plug gets into logging instrument to logging instrument's life has been improved.
Furthermore, an annular groove is formed in the position, where the sealing ring is placed, on the plug, the sealing ring can be fixed at the designated position, and therefore the sealing performance of the plug is improved.
Furthermore, the cross section of the landing leg is rectangular, a chamfer is arranged at the lower end of the landing leg, the straight contact surface is used for replacing a circular arc contact surface, when the landing leg is in contact with the well wall, the contact range is expanded from a point to a line, meanwhile, the chamfer is arranged, the contact range is expanded from the line to the surface, the contact area of the landing leg and the well wall is increased so as to increase the friction force between the landing leg and the well wall, and therefore the stability of the sidewall contact device is improved.
Particularly, the sectional area of the root part of the landing leg is larger than that of the lower end of the landing leg, the strength of the landing leg can be increased by thickening the root part of the landing leg, and the stability of the structure of the sidewall contact device is improved.
Drawings
FIG. 1 is a side cross-sectional view of a sidewall contact spring of the prior art;
fig. 2 is a schematic structural view of the improved sidewall contact device with wear resistance of the present invention;
FIG. 3 is a side cross-sectional view of the improved sidewall contact ram having wear resistance of the present invention;
fig. 4 is a partial enlarged view of a plug in the improved sidewall contact device with wear resistance according to the present invention.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to FIG. 1, which is a side cross-sectional view of a sidewall contact device of the prior art, it can be seen that in the prior art, a thrust pin and a thrust pin hole are arranged on opposite sides of a leg, when the leg is supported, the thrust pin hole side abuts against a logging wall, and since the wall thickness of the thrust pin hole formed in the casing is smaller than that of the casing at other positions, the thrust pin hole of the casing is more severely worn in the case of long-term use.
Please refer to fig. 2 and fig. 3, which are a schematic structural diagram and a side sectional view of the improved sidewall contact device with wear resistance according to the present invention, respectively, and comprise a housing 1, a leg 2, a wear-resistant coating 3 and a plug 4. Wherein the supporting legs 2 are movably connected with the shell 1 and used for pushing the shell 1 against the borehole wall. The wear-resistant coating 3 is sprayed on the designated position of the outer wall of the shell 1 to increase the wear resistance of the shell 1. The plug 4 is inserted inside the housing 1 for connecting the housing 1 to a logging tool (not shown).
When the improved sidewall contact device with the wear resistance is used, the plug 4 is inserted into a specified position in the shell 1 to connect a logging instrument with the sidewall contact device, the sidewall contact device is vertically or horizontally placed in a logging hole after the insertion is completed, the supporting legs 2 are controlled to be opened after the sidewall contact device is moved to the specified position, the supporting legs 2 are contacted with a logging wall after being opened, the supporting legs 2 continuously expand outwards and exert reverse force on the shell 1, and the shell is attached to the logging wall after being subjected to reverse acting force, so that the logging instrument connected with the shell 1 is driven to be attached to the logging wall. It can be understood that the specific structure of the inside of the casing when the supporting legs 2 are opened is clear to those skilled in the art, the driving mechanism of the supporting legs 2 may be hydraulic driving, or may be motor driving or other driving methods, the connection relationship between the supporting legs 2 and the driving device may be straight rod connection, or may also be worm connection or other types of connection methods, as long as the supporting legs 2 can be supported after the casing 1 reaches the designated position to abut the casing 1 against the borehole wall.
As shown in fig. 2 and fig. 3, the housing 1 of the present embodiment is a cylindrical metal shell, and a plurality of annular protrusions are disposed on the upper end of the metal shell, and each annular protrusion is provided with an annular groove for connecting to a designated device on the upper end. The side wall of the middle section of the shell 1 is provided with a groove for accommodating the supporting leg 2. And a wear-resistant coating 3 is sprayed on the outer wall of the opposite side of the groove of the shell 1, and the wear-resistant coating 3 is made of tungsten carbide. And a thrust pin hole 11 is formed in the inner wall of the lower end of the shell 1 and is used for being matched with the thrust pin 41 to restrain the plug 4, the circle center of the thrust pin hole and the center line of the groove are located on the same bus, and a connecting line of the circle center of the thrust pin hole and the bus where the center line of the wear-resistant coating is located penetrates through the axis of the circle center of the shell. When the supporting legs 2 are supported, the lower ends of the supporting legs 2 can be in contact with the logging wall and cannot move, at the moment, the supporting legs 2 can exert a reverse acting force on the shell 1 along with the continuous opening of the supporting legs 2, the shell 1 is attached to the logging wall on the other side after the shell receives the reverse acting force so as to be attached, and at the moment, the wear-resistant coating 3 is in contact with the logging wall so as to prevent the contact part of the shell 1 and the logging wall from being worn. It is understood that the raw material of the wear-resistant coating may be tungsten carbide coating or other raw materials, as long as the wear-resistant coating can prevent the shell 1 from being worn.
As shown in fig. 3, the supporting leg 2 of the present embodiment is a long rod, which is located in the groove formed in the housing 1 and movably connected to the housing 1. The upper end of the leg 2 is provided with a connection hole for connecting with the housing and rotating in a designated direction. The cross section of landing leg 2 is the rectangle and 2 lower extremes of landing leg are equipped with the chamfer for increase and the logging wall between area of contact, the upper end of landing leg 2 is thicker than the lower extreme, is equipped with the chamfer in the junction of thickness, is used for improving the stability of landing leg 2.
When the leg 2 is retracted, it will be received in a recess provided in the housing 1 to prevent the leg from bulging and causing wear as the ram is advanced into and out of the borehole. When the support leg 2 is supported, the inclined surface of the lower end chamfer of the support leg can be contacted with the logging wall, and the friction force between the support leg 2 and the logging wall is increased by increasing the contact area, so that the push rod is stably attached to a specified position. It is understood that the shape of the leg 2 is not limited in this embodiment, as long as the leg 2 can stably abut the sidewall contact device against the sidewall contact device when the sidewall contact device is erected.
Please refer to fig. 4, which is a partially enlarged view of the insert 4 of the improved push ram with wear resistance according to the present embodiment. 4 lower extremes of plug link to each other with appointed logging instrument, have seted up the annular groove at 4 tip lateral walls of plug, are equipped with the sealing washer in the annular groove for prevent that the dust in the logging wall from getting into inside the logging instrument through the recess that casing 1 was seted up and the space between plug 4. The side wall of the plug 4 is provided with a thrust pin 41, and an elastic component 42 is arranged between the thrust pin 41 and the plug 4 and is used for matching with the thrust pin hole 11 to fix the plug 4 at a specified position. When inserting the plug 4, press down the thrust pin first, when pressure is greater than the elasticity of elastic component 42, thrust pin hole 41 is pressed down and is contracted to the inside of shell 4, insert the plug into casing 1 at this moment, after the plug 4 enters the appointed position in the casing 1, thrust pin 41 and thrust pin hole 11 are located the same centre of a circle, at this moment casing 1 no longer retrains thrust pin 41, thrust pin 41 stretches out and enters thrust pin hole 11 under the elasticity of elastic component 42, at this moment thrust pin 41 and thrust pin hole 11 cooperate with each other in order to retrain plug 4, fix plug 4 on the appointed position of casing 1. It should be understood that the elastic member 42 may be a built-in spring, or may be other elastic components, as long as the elastic member 42 can lift the thrust pin 41 when not under pressure.
In order to make the objects and advantages of the present invention more apparent, the present invention will be further described with reference to the following embodiments; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
The wear-resistant coating 3 of the embodiment is a tungsten carbide coating, the spraying area of the tungsten carbide coating accounts for 20% of the cylindrical side area of the shell 1, the spraying thickness is 0.1mm, and after the sidewall contact device of the embodiment is used for 5000 times, the wear degree of the sidewall contact device is 7.88%.
Example two
The wear-resistant coating 3 of the embodiment is a tungsten carbide coating, the spraying area of the tungsten carbide coating accounts for 30% of the cylindrical side area of the shell 1, the spraying thickness is 0.3mm, and after the sidewall contact device of the embodiment is used for 5000 times, the wear degree of the sidewall contact device is 6.64%.
EXAMPLE III
The wear-resistant coating 3 of the embodiment is a tungsten carbide coating, the spraying area of the tungsten carbide coating accounts for 40% of the cylindrical side area of the shell 1, the spraying thickness is 0.5mm, and after the sidewall contact device of the embodiment is used for 5000 times, the wear degree of the sidewall contact device is 3.75%.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An improved sidewall contact device having wear resistance, comprising:
the outer wall of the shell, which is in contact with the logging wall, is sprayed with a wear-resistant coating to improve the wear resistance of the shell, and the inner wall of the shell is provided with a thrust pin hole for fixing a plug, wherein the thrust pin hole is positioned at the lower end of the shell and is positioned on the opposite side of the wear-resistant coating;
the supporting legs are vertically arranged on the side wall of the shell, the upper ends of the supporting legs are movably connected with the shell, and the supporting legs and the thrust pin holes are positioned on the same bus of the shell;
the plug is connected with the shell, and a convex telescopic thrust pin is arranged on the side wall of the plug and is used for being matched with the thrust pin hole to fix the plug.
2. The improved sidewall contact device with abrasion resistance as claimed in claim 1, wherein the sprayed area of the abrasion resistant coating is 20% -40% of the cylindrical side area of the housing 1.
3. The improved sidewall contact device with wear resistance as recited in claim 1 wherein the sprayed thickness of the wear resistant coating is 0.1-0.5 mm.
4. The improved push ram with wear resistance of claim 1 wherein the thrust pin is connected to the plug by a resilient member.
5. The improved sidewall contact device having wear resistance of claim 1 wherein the housing has a recess formed in the underside of the connection to the leg, the recess being of the same size as the leg for receiving the leg.
6. The improved sidewall contact device with wear resistance of claim 5, wherein the lower end of the plug is fixedly connected to a logging tool.
7. The improved sidewall contact device with wear resistance as recited in claim 5, wherein the sidewall of the upper end of the plug defines an annular groove, and a sealing ring is disposed in the groove for sealing against a logging tool.
8. The improved sidewall contact device with wear resistance as recited in claim 1 wherein the leg is rectangular in cross section and has chamfers at the lower ends thereof for increasing the contact area of the leg with the borehole wall.
9. The improved sidewall contact device with wear resistance as described in claim 8, wherein the leg has a root portion at the upper end with a larger cross-sectional area than the lower end, and is provided with a chamfer at the location where the cross-sectional area changes.
10. The improved sidewall contact device with wear resistance as described in claim 1, wherein said sidewall contact device housing upper end is provided with a plurality of annular protrusions and recesses for connection with the upper end device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016225.7U CN211598634U (en) | 2020-01-06 | 2020-01-06 | Improved sidewall contact device with wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016225.7U CN211598634U (en) | 2020-01-06 | 2020-01-06 | Improved sidewall contact device with wear resistance |
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| Publication Number | Publication Date |
|---|---|
| CN211598634U true CN211598634U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020016225.7U Active CN211598634U (en) | 2020-01-06 | 2020-01-06 | Improved sidewall contact device with wear resistance |
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| Country | Link |
|---|---|
| CN (1) | CN211598634U (en) |
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2020
- 2020-01-06 CN CN202020016225.7U patent/CN211598634U/en active Active
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