CN202882847U - Underground well erosion resistance throttling sand blaster - Google Patents
Underground well erosion resistance throttling sand blaster Download PDFInfo
- Publication number
- CN202882847U CN202882847U CN 201220547689 CN201220547689U CN202882847U CN 202882847 U CN202882847 U CN 202882847U CN 201220547689 CN201220547689 CN 201220547689 CN 201220547689 U CN201220547689 U CN 201220547689U CN 202882847 U CN202882847 U CN 202882847U
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- Prior art keywords
- central tube
- valve
- erosion resistance
- liquid
- underground well
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- Expired - Fee Related
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Abstract
The utility model discloses an underground well erosion resistance throttling sand blaster, and belongs to underground working tools. The underground well erosion resistance throttling sand blaster is applied to underground well construction like single layer and multiple layers of acidification, cement-filling, fracturing and sand-preventing and the like. The underground well erosion resistance throttling sand blaster comprises a central tube and a valve, a liquid port is arranged on the central tube and opposite to a liquid cavity of the valve. A blocking ring, a spring and the valve are all sleeved on the central tube, two ends of the central tube are respectively connected with an upper connector and a lower connector, and an adjusting sleeve and an upper connector screw thread are connected above the blocking ring. The outer diameter of the lower portion of liquid port of the central tube is identical to the inner diameter of the lower portion of the liquid cavity of the valve, a coordinating face with same diameter is formed, and liquid can flow into ground after the valve moves upward and are separated from the liquid port of the central tube. The underground well erosion resistance throttling sand blaster can function well only if the coordinating face between the central tube and the valve are not completely damaged by erosion of the liquid, can still control a packer to be seat-sealed again, and improves service life and operation success rate of the underground well erosion resistance throttling sand blaster.
Description
Technical field
The utility model belongs to the underground operation tool of petroleum industry, and particularly a kind of down-hole erosion resistance throttling sandblaster, be applicable to the underground constructions such as individual layer and multilayer acidization, cementing, pressure break and sand control.
Background technology
In the oil development process, complete the constructions such as acidifying, cementing, pressure break, sand control with inflatable packer and all will use restriction choke, the pressure reduction produced with restriction choke is realized packer set.Fluid enters stratum by the liquid head piece of restriction choke upper center tube, and corresponding technique is achieved.Have gap between the restriction choke central tube liquid head piece below external diameter used at present and the below internal diameter of valve liquid flow cavity, pressure reduction is to realize by spring compression valve and the valve seat conical surface
,the conical surface easily in work progress erosion damage, in work progress for some reason after termination of pumping again the turn on pump construction be difficult to set up the packer operting differential pressure.The restriction choke of developing a kind of Anti-erosion can be avoided the generation of the problems referred to above, improves the performance of instrument.
Summary of the invention
The purpose of this utility model is to manufacture a kind of down-hole erosion resistance throttling sandblaster, overcomes defect of the prior art, improves the erosion resistance of restriction choke sealing surface, improves the service behaviour of restriction choke.
For reaching above-mentioned purpose, can use following technical proposals: a kind of down-hole erosion resistance throttling sandblaster comprises central tube and valve, and central tube is provided with the liquid head piece, and it is right that the liquid flow cavity on this liquid head piece and valve rushes; Baffle ring, spring, valve all are enclosed within on central tube, and the central tube two ends are connected with lower contact with top connection respectively, and adjusting sleeve and top connection screwed connection are above baffle ring.The external diameter of central tube liquid head piece below equals the internal diameter of valve liquid flow cavity below, forms the equal diameter fitting face, and after the up off center of valve pipe liquid head piece, fluid just can enter stratum under pressure.In work progress, as long as liquid stream is not to the fitting face between central tube, valve, whole erosions damage, and instrument just can keep normal operation.
The utility model compared with prior art has following significant effect: the sealing of the sealing of this restriction choke between valve and lower contact upper end valve seat, be mainly to realize by the equal diameter fitting face of certain-length between the internal diameter of the external diameter below central tube liquid head piece and valve liquid flow cavity below.After pressure reduction reaches certain value, valve overcomes the spring force motion, when the liquid head piece that moves to certain distance rear center pipe side just exposes, carries fluid to stratum.In the restriction choke course of work, as long as liquid stream is not to the fitting face between central tube, valve, whole erosions damage, and while again constructing after termination of pumping, instrument still has throttling action, still can control packer again setting, has improved application life and the job success ratio of instrument.
The accompanying drawing explanation
Accompanying drawing is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing in detail the utility model is described in detail, referring to accompanying drawing, a kind of down-hole erosion resistance throttling sandblaster comprises central tube 5 and valve 6, and central tube 5 is provided with the liquid head piece, and it is right that the liquid flow cavity on this liquid head piece and valve 6 rushes; Baffle ring 3, spring 4, valve 6 all are enclosed within on central tube 5, and central tube 5 two ends are connected with lower contact 7 with top connection 1 respectively, and adjusting sleeve 2 and top connection 1 screwed connection are above baffle ring 3.The external diameter of central tube 5 liquid head piece belows equals the internal diameter of valve 6 liquid flow cavity belows, forms the equal diameter fitting face
.even inject the sand grains of formation fluid from central tube 5, fitting face is had to certain erosion, as long as this place still has complete fitting face, when turn on pump is constructed again, this throttling sandblaster, with regard to endure, has improved the working life of instrument.
This restriction choke is connected on to G.I.H design attitude on oil pipe, pump in oil pipe
enter form pressure reduction after fluid, promoting valve 6, to overcome the pressure of spring 4 up, and before the liquid head piece of valve 6 off centers pipes 5, fluid can leak on a small quantity along fitting face between the two.Can promote valve 6 motions when discharge capacity is greater than leakage rate, the liquid head piece on central tube 5 exposes, and fluid enters stratum by this passage.After termination of pumping, valve 6 is closed the liquid head piece of central tube 5 under the effect of spring 4.When turn on pump is constructed again, said process repeats.Work progress can form erosion to the fitting face of 5 of valve 6 and central tubes, but, as long as still there is complete fitting face in this equal diameter fitting face, while again constructing after termination of pumping, instrument still has throttling action, and packer can be again setting.
Claims (1)
1. a down-hole erosion resistance throttling sandblaster, comprise central tube (5) and valve (6), and central tube (5) is provided with the liquid head piece, and it is right that the liquid flow cavity on this liquid head piece and valve (6) rushes; Baffle ring (3), spring (4), valve (6) all are enclosed within on central tube (5), central tube (5) two ends are connected with lower contact (7) with top connection (1) respectively, adjusting sleeve (2) and the top of top connection (1) screwed connection in baffle ring (3), it is characterized in that, the external diameter of central tube (5) liquid head piece below equals the internal diameter of valve (6) liquid flow cavity below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547689 CN202882847U (en) | 2012-10-24 | 2012-10-24 | Underground well erosion resistance throttling sand blaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547689 CN202882847U (en) | 2012-10-24 | 2012-10-24 | Underground well erosion resistance throttling sand blaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882847U true CN202882847U (en) | 2013-04-17 |
Family
ID=48074287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220547689 Expired - Fee Related CN202882847U (en) | 2012-10-24 | 2012-10-24 | Underground well erosion resistance throttling sand blaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110941A (en) * | 2022-06-23 | 2022-09-27 | 大庆宏测技术服务有限公司 | Sand blower for multi-layer fracturing |
-
2012
- 2012-10-24 CN CN 201220547689 patent/CN202882847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110941A (en) * | 2022-06-23 | 2022-09-27 | 大庆宏测技术服务有限公司 | Sand blower for multi-layer fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151022 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: Sinopec Corp. Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: Sinopec Corp. Patentee before: Downhole Operation Co., Shengli Petroleum Administration, SINOPEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |