CN202926303U - Spraying gun for sand blast, perforation and fracturing with high backward splash resistance - Google Patents
Spraying gun for sand blast, perforation and fracturing with high backward splash resistance Download PDFInfo
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- CN202926303U CN202926303U CN 201220655316 CN201220655316U CN202926303U CN 202926303 U CN202926303 U CN 202926303U CN 201220655316 CN201220655316 CN 201220655316 CN 201220655316 U CN201220655316 U CN 201220655316U CN 202926303 U CN202926303 U CN 202926303U
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- spray gun
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- spraying gun
- guard shield
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Abstract
The utility model discloses a spraying gun for sand blast, perforation and fracturing with high backward splash resistance. The spraying gun comprises a lower joint, a spraying gun body, a plurality of nozzles, a protecting cover and a steel sleeve, wherein the lower end of the spraying gun body is connected with the lower joint through screw thread; a ball base is arranged in the lower joint; a plurality of mounting holes are formed in the side wall of the middle part of the spraying gun body; the outline of the steel sleeve is matched with the mounting holes through screw threads; the nozzles are embedded in the steel sleeve; the protecting sleeve is arranged outside the place with the mounting holes, of the spraying gun body; a through hole is formed in the side wall of the protecting sleeve; and the inner diameter of the through hole is slightly more than the spout diameter of the nozzles and less than the outer diameter of the nozzles. Due to the adoption of the technical scheme, the protecting cover which is separated from the spraying gun body is used for realizing a backward splash resistant function, the whole backward splash resistance and the high-speed mortar flushing resistance are obviously improved. If the nozzles are not damaged and eroded and the diameter of the nozzles is not increased after the nozzles are used, the spraying gun can be reused after simply replacing the protecting cover, so that the service life of the spray gun is greatly prolonged.
Description
Technical field
The utility model relates to the oil gas drilling field, and particularly a kind of high resistance is returned the abrasive perforating pressure break spray gun that spatters.
Background technology
At present, the abrasive perforating fracturing tool has obtained the large-scale promotion use in oil-gas field development, obtained development effectiveness preferably.But also produced some problems in the instrument use procedure, be mainly spray gun anti-to return the ability of spattering relatively poor, can't satisfy the needs of a spray gun multilayer perforation, can only complete 3 layers general at most.Want to increase the perforation number of plies and need to adopt multistage pitching sleeve type spray gun or trip out the modes such as spray gun that more renew, so just brought instrument cost and the disadvantages such as the rising of individual well construction cost, long construction period.And in a single day the pressure cap that nozzle is installed is returned to splash wears, and the thing followed is exactly that the nozzle thorn is bad, nozzle stings.Indivedual wells are because anti-returning spattered and anti-annular space high speed slurry erosion ability causes nozzle and the leakage of body thorn, lost nozzle etc., for follow-up construction brings the very big inconvenience failure of even constructing.
The pressure cap 2 of the installation nozzle described in patent No. ZL200620113021.5 Novel hydraulic jetter had both been born the effect that nozzle is installed, and had also born the anti-effect of spattering of returning, and adopted carbide alloy to be difficult for processing, and machining accuracy is difficult to guarantee.If on the contrary adopted easy rapidoprint instrument anti-to return the ability of spattering very weak, generally can only complete the perforating job in 1-3 hole.And main body 1 also need could machine-shaping with the material of easily processing, so main body 1 in use can cause due to the erosion of annular space high speed mortar thorn to leak.
Abrasion-proof core pipe 4 structures described in patent No. ZL201020299430.5 umbrella-shaped nozzle of hydraulic sand-blasting perforation hole and mounting means are comparatively complicated, what abrasion-proof core pipe 4 adopted is step structure, easily produce local stress and cause losing efficacy in fracturing process, can't satisfy the needs of 10 layers of abrasive perforating pressure break.
Sealing positioning sleeve 2 front end face coated with hard alloy powders described in the backwash-proof erosion structure of water of patent No. ZL200820109254.7 sand jet perforator form the approximately wear-resistant coating 4 of 1mm, although this structure antagonism is returned the ability of spattering and is obtained certain lifting, but the thickness of wear-resistant coating 4 is too thin, can't satisfy repeatedly the needs of perforation, wear-resistant coating need to be processed through high temperature sintering, sealing positioning sleeve 2 can produce distortion, therefore can not the time processing moulding, and processing cost is high.And the tool body 1 of bearing annular space high speed slurry erosion be easily processing than the mild steel material, anti-thorn leak ability relatively a little less than, can't satisfy the needs of 10 layers of abrasive perforating pressure break.
Summary of the invention
The purpose of this utility model is to provide a kind of abrasive perforating pressure break spray gun that high resistance is returned the ability of spattering that has.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of high resistance is returned the abrasive perforating pressure break spray gun that spatters, and comprises lower contact, spray gun body, a plurality of nozzle, guard shield and steel bushing, and lower contact and spray gun body are the rotary structure of hollow, and the lower end of spray gun body is connected with lower contact by screw thread.The inside of lower contact is provided with ball seat, is provided with a plurality of installing holes for nozzle is installed on the sidewall in the middle part of the spray gun body.The outer surface of steel bushing matches with installing hole by screw thread, and nozzle is entrenched in the inside of steel bushing, and is interference fit between steel bushing and nozzle.Guard shield is cylinder-like structure, and guard shield is enclosed within the outside that the spray gun body is provided with the position of installing hole.Position corresponding with installing hole on the sidewall of guard shield is provided with through hole, and the internal diameter of this through hole is slightly larger than the nozzle diameter of nozzle, and less than the external diameter of nozzle.
The inner ball seat that arranges of lower contact is used for ball-off, thereby makes oil pipe liquid outwards to penetrate from nozzle.Nozzle is entrenched in steel bushing in the mode of interference fit, the high pressure sealing between can realizing both.The steel bushing outside adopts screw thread to be arranged on the installing hole of spray gun body, can realize the high pressure sealing between steel bushing and spray gun body.Anti-returning spattered and the function of anti-annular space erosion mainly realizes by guard shield.The structure of guard shield is the straight barrel type that is easy to process, and adopts thicker wall thickness, anti-ly returns the ability that the ability of spattering and anti-high speed mortar wash away with what guarantee solid tool.The guard shield side has through hole, and its layout is consistent with the layout of nozzle on the spray gun body, and the through hole internal diameter is slightly larger than nozzle diameter.Adopt this mode, the mortar that penetrates from nozzle reflects resilience through sleeve pipe, the high speed sand grains of resilience can only impact on guard shield and wash away along the wall of guard shield, avoided the high speed mortar to the direct impact of spray gun body and washed away, thereby significantly improve the anti-ability of spattering of returning of spray gun, a spray gun can be realized the demand of hydraulic jet perforation pressure break more than 10 sections.
Preferably, said apparatus also comprises wiper block and lower wiper block, and they all are arranged at the outside of spray gun body, and upper wiper block and lower wiper block lay respectively at the above and below of guard shield.The external diameter of upper wiper block and lower wiper block is all greater than the external diameter of guard shield, its effect be avoid instrument go into the well and transportation in the hard thrust hard fragility guard shield is directly clashed into, simultaneously solid tool is realized between two parties in sleeve pipe, the erosion to solid tool of the throttle resistance of reduction annular space and high speed mortar.
Preferably, spray gun body and steel bushing all use softer metal material to make, and guard shield uses the high rigidity Hardmetal materials to make.Process spray gun body and cylinder sleeve with relatively soft material, machining accuracy easily guarantees, also is convenient to inlay and install, and sealing easily is guaranteed.The guard shield that carbide alloy is made has higher intensity and impact resistance.
The abrasive perforating pressure break spray gun that adopts high resistance of the present utility model to return to spatter is used the guard shield that becomes Split type structure with the spray gun body to bear anti-returning and is spattered function, whole anti-ly return the ability that the ability of spattering and anti-high speed mortar wash away and is significantly improved.If nozzle is not damaged after use and the erosion hole enlargement, can simply change and continue after guard shield to use, thus the application life of greatly having improved instrument.
Description of drawings
Fig. 1 is that the utility model high resistance is returned the structural representation that the abrasive perforating pressure break of spattering is used spray gun.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1,1 is lower contact, and 2 is the spray gun body, and 3 is guard shield, and 5 is steel bushing, and 6 is nozzle, and 12 is upper wiper block, and 13 is lower wiper block, and wherein spray gun body 2 and steel bushing 5 use 20CrMo to make, and guard shield 3 uses YG8 to make.Lower contact 1 and spray gun body 2 are the rotary structure of hollow, and the lower end of spray gun body 2 is connected with lower contact 1 by screw thread.The inside of lower contact 1 is provided with ball seat 9, is provided with a plurality of installing holes 10 for nozzle 6 is installed on the sidewall at spray gun body 2 middle parts.The outer surface of steel bushing 5 matches with installing hole 10 by screw thread, and nozzle 6 is entrenched in the inside of steel bushing 5, and is interference fit between steel bushing 5 and nozzle 6.Guard shield 3 is cylinder-like structure, and guard shield 3 is enclosed within the outside that spray gun body 2 is provided with the position of installing hole 10.Position corresponding with installing hole 10 on the sidewall of guard shield 3 is provided with through hole 11, and the internal diameter of through hole 11 is slightly larger than the nozzle diameter of nozzle 6, and less than the external diameter of nozzle 6.Upper wiper block 12 and lower wiper block 13 all are arranged at the outside of spray gun body 2, and upper wiper block 12 and lower wiper block 13 lay respectively at the above and below of guard shield 3.The external diameter of upper wiper block 12 and lower wiper block 13 is all greater than the external diameter of guard shield 3.
After having carried out positive well-flushing or anti-flushing well, the well head pitching is seated on ball seat 9, and oil pipe liquid can only outwards penetrate from nozzle 6, and can carry out the abrasive perforating pressure break this moment.The mortar that penetrates from nozzle 6 reflects resilience through sleeve pipe, the high speed sand grains of resilience can only impact on guard shield 3, thereby avoided the direct impact to spray gun body 2, can significantly improve the anti-ability of spattering of returning of spray gun, a spray gun can be realized the demand of hydraulic jet perforation pressure break more than 10 sections.
The above is only preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection domain of the present utility model.
Claims (3)
1. a high resistance is returned the abrasive perforating pressure break spray gun that spatters, comprise lower contact (1), spray gun body (2) and a plurality of nozzle (6), described lower contact (1) and described spray gun body (2) are the rotary structure of hollow, and the lower end of described spray gun body (2) is connected with described lower contact (1) by screw thread, the inside of described lower contact (1) is provided with ball seat (9), be provided with a plurality of installing holes (10) be used to described nozzle (6) are installed on the sidewall at described spray gun body (2) middle part, it is characterized in that: also comprise guard shield (3) and steel bushing (5), the outer surface of described steel bushing (5) matches with described installing hole (10) by screw thread, and described nozzle (6) is entrenched in the inside of described steel bushing (5), and is interference fit between described steel bushing (5) and described nozzle (6), described guard shield (3) is cylinder-like structure, and described guard shield (3) is enclosed within the outside that described spray gun body (2) is provided with the position of described installing hole (10), position corresponding with described installing hole (10) on the sidewall of described guard shield (3) is provided with through hole (11), the internal diameter of described through hole (11) is slightly larger than the nozzle diameter of described nozzle (6), and less than the external diameter of described nozzle (6).
2. high resistance according to claim 1 is returned the abrasive perforating pressure break spray gun that spatters, and it is characterized in that: also comprise wiper block (12) and lower wiper block (13); Described upper wiper block (12) and described lower wiper block (13) all are arranged at the outside of described spray gun body (2), and described upper wiper block (12) and described lower wiper block (13) lay respectively at the above and below of described guard shield (3); The external diameter of described upper wiper block (12) and described lower wiper block (13) is all greater than the external diameter of described guard shield (3).
3. high resistance according to claim 1 and 2 is returned the abrasive perforating pressure break spray gun that spatters, and it is characterized in that: described spray gun body (2) and described steel bushing (5) all use softer metal material to make; Described guard shield (3) uses the high rigidity Hardmetal materials to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220655316 CN202926303U (en) | 2012-12-03 | 2012-12-03 | Spraying gun for sand blast, perforation and fracturing with high backward splash resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220655316 CN202926303U (en) | 2012-12-03 | 2012-12-03 | Spraying gun for sand blast, perforation and fracturing with high backward splash resistance |
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| Publication Number | Publication Date |
|---|---|
| CN202926303U true CN202926303U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220655316 Expired - Fee Related CN202926303U (en) | 2012-12-03 | 2012-12-03 | Spraying gun for sand blast, perforation and fracturing with high backward splash resistance |
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| CN (1) | CN202926303U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821490A (en) * | 2014-03-11 | 2014-05-28 | 中国石油化工股份有限公司 | Special ejector with multilevel hydraulic ejecting and staged fracturing |
| CN104727794A (en) * | 2015-02-03 | 2015-06-24 | 北京众博达石油科技有限公司 | Scouring-resistant ejector |
| CN105317409A (en) * | 2014-07-03 | 2016-02-10 | 中国石油化工股份有限公司 | Horizontal well staged fracturing and pumping perforation method |
| CN106285576A (en) * | 2016-09-29 | 2017-01-04 | 西南石油大学 | A kind of long-life Contiuum type sand jet perforator and manufacturing process thereof |
| CN111520111A (en) * | 2020-05-13 | 2020-08-11 | 中国石油集团渤海钻探工程有限公司 | Spray gun |
-
2012
- 2012-12-03 CN CN 201220655316 patent/CN202926303U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821490A (en) * | 2014-03-11 | 2014-05-28 | 中国石油化工股份有限公司 | Special ejector with multilevel hydraulic ejecting and staged fracturing |
| CN105317409A (en) * | 2014-07-03 | 2016-02-10 | 中国石油化工股份有限公司 | Horizontal well staged fracturing and pumping perforation method |
| CN104727794A (en) * | 2015-02-03 | 2015-06-24 | 北京众博达石油科技有限公司 | Scouring-resistant ejector |
| CN106285576A (en) * | 2016-09-29 | 2017-01-04 | 西南石油大学 | A kind of long-life Contiuum type sand jet perforator and manufacturing process thereof |
| CN106285576B (en) * | 2016-09-29 | 2018-09-07 | 西南石油大学 | A kind of long-life Contiuum type sand jet perforator and its manufacturing process |
| CN111520111A (en) * | 2020-05-13 | 2020-08-11 | 中国石油集团渤海钻探工程有限公司 | Spray gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20161203 |