CN209539318U - Peg type high-pressure sand blast device - Google Patents
Peg type high-pressure sand blast device Download PDFInfo
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- CN209539318U CN209539318U CN201920129533.8U CN201920129533U CN209539318U CN 209539318 U CN209539318 U CN 209539318U CN 201920129533 U CN201920129533 U CN 201920129533U CN 209539318 U CN209539318 U CN 209539318U
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- central tube
- lower section
- cased
- type high
- blast device
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Abstract
A kind of peg type high-pressure sand blast device.Mainly solve the problems, such as that existing sanding machine is applicable in that pressure is lower makes channeling test of cement sheath or leakage is looked for make a fault.It is characterized by: central tube (2) the lower section diameter is less than upper diameter, reset spring (4) are cased with outside central tube (2) upper section, reset spring (4) bottom is equipped with dowel bushing (5), several radial shear pins (6) are connected on the dowel bushing (5), feeding spring (7) is cased with outside shear pin (6), and shear pin (6) end is withstood on central tube (2) lower section；Central tube (2) lower section is cased with piston (8), and is provided with liquid pass hole (9) on central tube (2) lower section side wall.The peg type high-pressure sand blast device bearing capacity is high, multi-point channeling test of cement sheath can be carried out in the case where certain pressure value and look for leakage process.
Description
Technical field
The utility model relates to oilfield, specifically a kind of peg type high-pressure sand blast device.
Background technique
In Downhole Construction, channeling test of cement sheath often is carried out to oil well or looks for leakage, conventional sanding machine pressure ratio in use
Lower, the pressure difference inside and outside channeling test of cement sheath sometimes or Tube-colume for seanching leakage area is smaller, and the effect of packer setting is with regard to bad, to channeling test of cement sheath or look for leakage
Judgement will appear fault.To improve the pressure difference inside and outside tubing string it is necessary to substitute sanding machine using injection well downhole flow regulator, use in this way is matched
Hydrophone will carry out fishing plugging device, and intake tunnel is opened ability channeling test of cement sheath or looks for leakage, and working procedure is complicated and time-consuming and laborious,
Influence operation timeliness, direct losses operating cost and Master Cost.Therefore, it is necessary to the bearing capacities to existing sanding machine to do into one
Step is improved.
Utility model content
In order to overcome the shortcomings of that existing sanding machine is applicable in that pressure is lower to be made channeling test of cement sheath or leakage is looked for make a fault, the utility model
A kind of peg type high-pressure sand blast device is provided, the peg type high-pressure sand blast device bearing capacity is high, can be in the case where certain pressure value
It carries out multi-point channeling test of cement sheath and looks for leakage process.
The technical solution of the utility model is: a kind of peg type high-pressure sand blast device, including top connection, the top connection bottom
It is threadedly coupled central tube, the central tube lower section diameter is less than upper diameter, is cased with reset spring outside central tube upper section, resets
Spring bottom is equipped with dowel bushing, several radial shear pins are connected on the dowel bushing, be cased with outside shear pin into
To spring, and shear pin end is withstood on central tube lower section；The central tube lower section is cased with piston, and central tube lower section side wall
On be provided with liquid pass hole.
The utility model has the following beneficial effects: the sanding machine bearing capacity is high due to taking above scheme, it can be one
Multi-point channeling test of cement sheath is carried out in the case where level pressure force value and looks for leakage process, and it is time saving and energy saving to construct.
Detailed description of the invention
Fig. 1 is the main view of the utility model；
Fig. 2 is the sectional view of the A-A along Fig. 1.
1- top connection in figure, 2- central tube, 3-O type circle, 4- reset spring, 5- dowel bushing, 6- shear pin, 7- feed bullet
Spring, 8- piston, 9- liquid pass hole, 10- lower contact.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Fig. 1, Fig. 2, a kind of peg type high-pressure sand blast device, including top connection 1,1 bottom thread of top connection connect
Central tube 2 is connect, and the two junction is equipped with O-ring 3.The 2 lower section diameter of central tube is less than upper diameter, and 2 bottom of central tube
Portion is connected with lower contact 10.Reset spring 4 is cased with outside 2 upper section of central tube, 4 bottom of reset spring is equipped with dowel bushing 5, multiple
Position 4 upper and lower ends of spring are withstood on respectively in top connection 1 and dowel bushing 5.Several radial shearings are connected on the dowel bushing 5
Pin 6 is cased with feeding spring 7 outside shear pin 6, and 6 end of shear pin is withstood on 2 lower section of central tube.The central tube 2
Lower section is cased with piston 8, and 8 upper and lower ends of piston are withstood on respectively on dowel bushing 5 and lower contact 10, and opens on 2 lower section side wall of central tube
There is liquid pass hole 9.
The tool is gone into the well together with tubing string, is suppressed in oil pipe after positioning is qualified, liquid by 2 lower part of central tube mistake
Fluid apertures 9 flows outwardly, thus upper top piston 8, piston 8 pushes 5 uplink of dowel bushing, when pressure reaches certain value, piston 8 to
Shear pin 6 is cut by the step outside central tube 2 under the action of lifting force, and piston 8 and dowel bushing 5 uplink together, living at this time
Fluid course between plug 8 and lower contact 9 is opened, and first step movement is completed.When channeling test of cement sheath or look for leakage after the completion of pressure be reduced to 0 when,
Dowel bushing 5 and piston 8 reset downwards under the action of reset spring 4, close liquid pass hole 9.The centring of shear pin 6 at this time
The lower fragment position of pipe 2, inwardly ejection contacts shear pin 6 with section surface under central tube 2 under the action of feeding spring 7, entirely
Tool is restored to the state before going into the well again.The above operation repeatedly, can carry out multi-point channeling test of cement sheath in the case where certain pressure value
With look for leakage process.
Claims (1)
1. a kind of peg type high-pressure sand blast device, including top connection (1), top connection (1) bottom thread connects central tube (2),
It is characterized by: central tube (2) the lower section diameter is less than upper diameter, reset spring is cased with outside central tube (2) upper section
(4), reset spring (4) bottom is equipped with dowel bushing (5), several radial shear pins are connected on the dowel bushing (5)
(6), feeding spring (7) is cased with outside shear pin (6), and shear pin (6) end is withstood on central tube (2) lower section；It is described
Central tube (2) lower section is cased with piston (8), and is provided with liquid pass hole (9) on central tube (2) lower section side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920129533.8U CN209539318U (en) | 2019-01-24 | 2019-01-24 | Peg type high-pressure sand blast device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920129533.8U CN209539318U (en) | 2019-01-24 | 2019-01-24 | Peg type high-pressure sand blast device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539318U true CN209539318U (en) | 2019-10-25 |
Family
ID=68271527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920129533.8U Active CN209539318U (en) | 2019-01-24 | 2019-01-24 | Peg type high-pressure sand blast device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209539318U (en) |
-
2019
- 2019-01-24 CN CN201920129533.8U patent/CN209539318U/en active Active
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| GR01 | Patent grant |