CN204402450U - Anti-returning spatters sand blasting perforator - Google Patents
Anti-returning spatters sand blasting perforator Download PDFInfo
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- CN204402450U CN204402450U CN201520022562.6U CN201520022562U CN204402450U CN 204402450 U CN204402450 U CN 204402450U CN 201520022562 U CN201520022562 U CN 201520022562U CN 204402450 U CN204402450 U CN 204402450U
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- perforator
- spatters
- sand blasting
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Abstract
A kind of anti-returning spatters sand blasting perforator, and comprise body and nozzle, the outer wall of body is provided with groove, the middle part of groove is provided with installing hole, the sidewall slope of groove, and nozzle is arranged in installing hole, and the outer end of nozzle is stretched out from the bottom surface of groove.Anti-return that to spatter sand blasting perforator structure simple, component are few, be easy to processing and assembling, by the groove that arranges and the projection of nozzle outer end, around nozzle, form flow-guiding structure, enable to return and spatter liquid and to return when splashing on perforator in time and comparatively Uniform Flow, avoid returning and spatter liquid form vortex in groove, prevent from returning and spatter liquid and flow in groove for a long time, reduce to return to spatter the erosion of liquid to perforator, improve the application life of perforator.
Description
Technical field
The utility model relates to a kind of oilfield operation equipment, specifically, is that a kind of anti-returning spatters sand blasting perforator.
Background technology
Perforating job is set up in sleeve pipe and the routine work mode of passage between reservoir, and hydraulic jet perforation is for method conventional in well production increment measure in perforating job, in perforating process, high pressure perforating fluid is through perforating gun, become high-speed jet, pressure energy is converted to kinetic energy, penetrates sleeve-penetrating, cement sheath and near wellbore formation, first rises and set up circulation passage between pit shaft and reservoir.In perforating process, when high-speed jet is ejected in sleeve pipe and stratum, the nozzle surface splashed on perforator and perforator can be returned, on perforator, erosion goes out scar, reduction of service life, extend the perforating job time, serious returning is spattered and perforator can be made at the conditions down-hole Fracture of complexity with erosion, causes down-hole accident.
For the problems referred to above, current perforator is all solve by increasing coating member or increasing coating the problem returned and spatter erosion, but these modes still exist larger deficiency.Coating member adds the number of parts of perforator, improve manufacture difficulty and the cost of perforator, water flow jet is not hindered in order to make it, also need to arrange hole for water spraying on its surface, and the setting of hole for water spraying and the installation of coating member, add the quantity connecting gap between parts, improve the sealing difficulty of hole for water spraying, make the structure of perforator more complicated, be unfavorable for installing and maintenance.Coating only address only problem for the moment, but its restricted lifetime, and after perforator uses a period of time, coating is returned completely spatters after erosion falls, and perforator will be subjected to again damage.
Utility model content
The utility model, for above-mentioned the deficiencies in the prior art, devises a kind of anti-returning newly and spatters sand blasting perforator.
Anti-returning of the present utility model spatters sand blasting perforator, and comprise body and nozzle, the outer wall of body is provided with groove, the middle part of groove is provided with installing hole, the sidewall slope of groove, and nozzle is arranged in installing hole, and the outer end of nozzle is stretched out from the bottom surface of groove.
Preferably, the outer end of installing hole is provided with step trough, and the middle part of nozzle is provided with collar flange, and collar flange is arranged in step trough.
Preferably, nozzle is set with gasket ring and sealing ring, gasket ring and sealing ring are between collar flange and the step of step trough.
Preferably, the outer end of nozzle is square or hexagonal bolt head.
Preferably, the bottom of nozzle and installing hole are threaded connection.
Preferably, the inner of nozzle is arranged in installing hole.
Preferably, the angle between the sidewall of groove and bottom surface is 120 ° ~ 160 °.
Preferably, the surface of groove and the body surface of recess edge are all provided with wear-resistant coating.
Preferably, the angle between the axis of nozzle and the axis of body is α, 75 °≤α≤90 °.
Preferably, the nozzle on body is at least provided with one group along its axis direction, and often organize and be at least provided with a nozzle, the nozzle often in group is all positioned at circumferentially same.
The beneficial effects of the utility model are: anti-return that to spatter sand blasting perforator structure simple, component are few, be easy to processing and assembling, by the groove that arranges and the projection of nozzle outer end, around nozzle, form flow-guiding structure, enable to return and spatter liquid and to return when splashing on perforator in time and comparatively Uniform Flow, avoid returning and spatter liquid form vortex in groove, prevent from returning and spatter liquid and flow in groove for a long time, reduce to return to spatter the erosion of liquid to perforator, improve the application life of perforator.
Nozzle arranges flange and is arranged in step trough, flange is made to form a disk-like structure, the junction of covering nozzles and body, gasket ring and sealing ring are contained between collar flange and the step of step trough, the hermetically-sealed construction of perforator is avoided to suffer erosion, ensure that the sealing performance of perforator, keep the perforating fluid of nozzle injection to have enough pressure, ensure that the perforating effect of perforator.
The outer end of nozzle is square or hexagonal bolt head, mounts and dismounts nozzle by spanner, reduce further installation and maintenance difficulty.
Nozzle and installing hole are threaded connection, and helicitic texture is not only convenient to the installation and removal of nozzle, also the optional helicitic texture with having sealing function, improve the sealing effectiveness of perforator and the convenience of assembling and maintenance.
The inner of nozzle is arranged in installing hole, make the inner of nozzle concordant with the inner of installing hole or be hidden in the inside of installing hole, prevent the inner of nozzle exposed in the inner chamber of body, avoid the inner of the high pressure perforating fluid erosion nozzle flowed in chamber body, alleviate the wearing and tearing of nozzle the inner, improve the application life of nozzle.
The sidewall slope of groove and and in 120 ° ~ 160 ° between bottom surface, enable level and smooth will the returning of the sidewall of groove spatter liquid and be directed to outside groove, prevent from returning and spatter liquid form eddy current in groove, avoid returning and spatter liquid and flow in groove for a long time, reduction erosion.
The surface of groove and the body surface of recess edge all arrange wear-resistant coating, increase the erosion resistance on perforator surface, the arc flow-guiding structure formed with groove and nozzle outer end coordinates, make to return the erosive force spattering liquid disperse and weaken, reduce wear-resistant coating loss rate, further increase the application life of perforator.
Nozzle not only can perpendicular to body, also can relatively and body be obliquely installed, perforating fluid upwards circulation impact returns and spatters liquid, return spatter general relatively light to the body erosion on nozzle top, more serious to the body erosion of nozzle bottom, be obliquely installed be return spatter liquid can upwards deflection, make to return and spatter liquid and be more evenly distributed, alleviate the problem that nozzle lower body place local erosion is serious.
Nozzle can arrange many groups on diverse location, increases the distribution area of nozzle, makes perforator can carry out abrasive perforating operation to wider downhole area, increases work efficiency.Often organize spray orifice and lay respectively at main body diverse location circumferentially, make abrasive perforating hole out be Multi-layers distributing, be evenly distributed, oil impregnate is effective.
Accompanying drawing explanation
Accompanying drawing 1 is that this prevents returning the structure chart one spattering sand blasting perforator.
Accompanying drawing 2 is that this prevents returning the structure chart two spattering sand blasting perforator.
Accompanying drawing 3 is that this prevents returning the structure chart three spattering sand blasting perforator.
Detailed description of the invention
Anti-returning of the present utility model spatters sand blasting perforator, and as shown in Figures 1 to 3, comprise body 1 and nozzle 2, nozzle 2 can be provided with multiple.
The outer wall of body 1 is provided with groove 3, the middle part of groove 3 is provided with installing hole 4, and nozzle 2 is all arranged in the installing hole 4 of respective slot 3.
The sidewall 5 of groove 3 tilts, and in 120 ° ~ 160 ° between bottom surface 6, the outer end of nozzle 2 is stretched out from the bottom surface 6 of groove 3, makes nozzle 2 outer end sidewall, the bottom surface 6 of groove 3 and the sidewall 5 of groove 3 form a flow-guiding structure.The surface of groove 3 and the body 1 at groove 3 edge are all provided with wear-resistant coating on the surface, the outer end of nozzle 2 and the lateral surface etc. of flange may be subject to returning the surface spattering liquid erosion also can arrange wear-resistant coating, make that the external surface of flow-guiding structure has wear-resistant coating, wear-resistant coating is the high-abrasive materials such as cemented carbide powder.
Bottom and the installing hole 4 of nozzle 2 are threaded connection, and the outer end of nozzle 2 is square or hexagonal bolt head, is convenient to by spanner swivel nozzle 2, is encased in by nozzle 2 in installing hole 4 or from installing hole 4 and pulls down.
The outer end of installing hole 4 is provided with step trough 7, and the collar flange 8 that the middle part of nozzle 2 is arranged is arranged in step trough 7, and the gasket ring 9 that nozzle 2 is set with and sealing ring 10 are also all between collar flange 8 and the step of step trough 7.
The inner of nozzle 2 is arranged in installing hole 4, avoids the inner of perforating fluid erosion nozzle 2 in body 1 inner chamber.
As shown in Figure 1, nozzle 2 vertically can be arranged relative to body 1.As shown in Figure 2, nozzle 2 also can be obliquely installed relative to body 1, and the angle between the axis of nozzle 2 and the axis of body 1 is α, 75 °≤α≤90 °.
As shown in Figure 3, the nozzle on body 1 is at least provided with one group along its axis direction, often organizes and is at least provided with a nozzle 2, and the nozzle 2 often in group is all positioned at circumferentially same.
Perforating fluid is by chamber body from nozzle 2 to the pipe box of down-hole, and the jet of perforating fluid punctures pipeline and penetrates layer of turning up the soil, and penetrate and output a duct, perforating fluid enters into after bottom duct, and the sidewall oppositely along duct leaves duct, returns and spatters to perforator.
Because the perforating fluid sprayed from the orifice edge of nozzle 2 is that umbrella is sprayed, these be umbrella spray perforating fluid impact return the perforating fluid spattered to perforator, and draw the sidewall of directional nozzle 2 outer end, enter into the flow-guiding structure of arc, along bottom surface 6 and the sidewall 5 of the sidewall of nozzle 2 outer end, groove 3, leave groove 3.
Claims (10)
1. anti-returning spatters sand blasting perforator, comprise body (1) and nozzle (2), it is characterized in that, the outer wall of body (1) is provided with groove (3), the middle part of groove (3) is provided with installing hole (4), the sidewall (5) of groove (3) tilts, nozzle (2) is arranged in installing hole (4), and the outer end of nozzle (2) is stretched out from the bottom surface (6) of groove (3).
2. anti-returning according to claim 1 spatters sand blasting perforator, it is characterized in that, the outer end of installing hole (4) is provided with step trough (7), the middle part of nozzle (2) is provided with collar flange (8), and collar flange (8) is arranged in step trough (7).
3. anti-returning according to claim 2 spatters sand blasting perforator, it is characterized in that, nozzle (2) is set with gasket ring (9) and sealing ring (10), gasket ring (9) and sealing ring (10) are positioned between the step of collar flange (8) and step trough (7).
4. anti-returning according to claim 1 spatters sand blasting perforator, and it is characterized in that, the outer end of nozzle (2) is square or hexagonal bolt head.
5. anti-the returning according to claim 1 or 4 spatters sand blasting perforator, it is characterized in that, bottom and the installing hole (4) of nozzle (2) are threaded connection.
6. anti-returning according to claim 1 spatters sand blasting perforator, and it is characterized in that, the inner of nozzle (2) is arranged in installing hole (4).
7. anti-returning according to claim 1 spatters sand blasting perforator, and it is characterized in that, the angle between the sidewall (5) of groove (3) and bottom surface (6) is 120 ° ~ 160 °.
8. anti-returning according to claim 1 spatters sand blasting perforator, and it is characterized in that, the surface of groove (3) and the body (1) at groove (3) edge are all provided with wear-resistant coating on the surface.
9. anti-returning according to claim 1 spatters sand blasting perforator, and it is characterized in that, the angle between the axis of nozzle (2) and the axis of body (1) is α, 75 °≤α≤90 °.
10. anti-returning according to claim 1 spatters sand blasting perforator, it is characterized in that, nozzle on body (1) is at least provided with one group along its axis direction, often organize and be at least provided with a nozzle (2), the nozzle (2) often in group is all positioned at circumferentially same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022562.6U CN204402450U (en) | 2015-01-13 | 2015-01-13 | Anti-returning spatters sand blasting perforator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022562.6U CN204402450U (en) | 2015-01-13 | 2015-01-13 | Anti-returning spatters sand blasting perforator |
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| Publication Number | Publication Date |
|---|---|
| CN204402450U true CN204402450U (en) | 2015-06-17 |
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| CN201520022562.6U Expired - Fee Related CN204402450U (en) | 2015-01-13 | 2015-01-13 | Anti-returning spatters sand blasting perforator |
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