CN206668157U

CN206668157U - A kind of auto-excitation type hydroscillator

Info

Publication number: CN206668157U
Application number: CN201720297775.9U
Authority: CN
Inventors: 李应虎; 邹刚; 周歆; 蒋友谊; 汪建; 祝小琴
Original assignee: SJS Ltd
Current assignee: SJS Ltd
Priority date: 2017-03-25
Filing date: 2017-03-25
Publication date: 2017-11-24
Anticipated expiration: 2027-03-25

Abstract

The utility model belongs to oil exploration equipment design and manufacturing technology field, specifically a kind of auto-excitation type hydroscillator, including outer barrel and the valve body being placed in outer barrel, the fluid conversion chamber of fluid intake and fluid issuing is communicated with the valve body, fluid conversion intracavitary is provided with splitter, and fluid conversion chamber is separated into diffluence room and minor air cell, and the switching runner of connection diffluence room and minor air cell by the splitter, the switching runner at least two, and it is symmetrical relative to spindle of valve body line；Fluid intake, diffluence room and the backpressure passage of minor air cell also are connected simultaneously at least provided with two in the valve body, the backpressure passage is symmetrical relative to spindle of valve body line.The beneficial effects of the utility model are：Tool construction is compact, size is short, high without any parts that can be movable, reliability；There is no rubber seal, do not influenceed by chemical mediator, temperature；Displacement range is big, and pressure consumption is low；Anti-erosion, anti-fatigue ability improve.

Description

A kind of auto-excitation type hydroscillator

Technical field

The utility model belongs to oil exploration equipment design and manufacturing technology field, specifically a kind of self-excited water forced oscillation Device.

Background technology

Hydroscillator is a kind of tubing string outreach tool for the directional well such as horizontal well, high angle hole, extended reach well, well For the fluid of interior circulation by producing periodic oscillating load after hydroscillator, producing impulsive force improves bottom rock stress shape State, improve drill bit efficiency of breaking rock；Meanwhile the static friction between tubing string and the borehole wall or sleeve pipe is changed into dynamic friction by vibratory impulse, Frictional resistance and moment of torsion in slide drilling is greatly reduced, effectively transmits the pressure of the drill, improves drilling depth.

The hydroscillator of scene input application is various informative, antifriction positive effect, better economic benefit.But also or There are problems that more or less：1st, displacement range is small, influences construction operation；2nd, product structure is complicated, and pressure consumption is universal bigger than normal；3rd, resist Erosion scarce capacity, influences service life；4th, it is not high containing movable part and rubber seal element, reliability.

The content of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of auto-excitation type hydroscillator, tool sizes are short, It is compact-sized, without any part and seal that can be movable.

To realize above-mentioned technical purpose, scheme provided by the utility model is：A kind of auto-excitation type hydroscillator, including it is outer Cylinder and the valve body that is placed in outer barrel, the fluid conversion chamber of fluid intake and fluid issuing is communicated with the valve body, and fluid turns Changing intracavitary and be provided with splitter, fluid conversion chamber is separated into diffluence room and minor air cell by the splitter, and connection diffluence room and minor air cell Switching runner, the switching runner at least two, and it is symmetrical relative to spindle of valve body line；Also at least provided with two in the valve body Fluid intake, diffluence room and the backpressure passage of minor air cell are connected simultaneously, the backpressure passage is symmetrical relative to spindle of valve body line.

Moreover, the both ends of the outer barrel have sealing screw thread, can be that one end is public for sealing for sealing box thread, the other end Screw thread.

Moreover, the outer barrel includes upper and lower two sections, after being threadedly coupled to together by sealing, it is welded as a whole.

Moreover, the valve body is cylindrical structure, its periphery forms shape metallic leak-proof structure with outer tube inner wall interference fit.

Moreover, the middle part of the splitter face fluid intake.

Moreover, splitter head section is small trapezium structure, or it is triangular structure, or is arc structure.

Moreover, the switching runner is distributed in the splitter surrounding, and it is tangent with minor air cell.

Moreover, the backpressure passage is distributed on the outside of fluid conversion chamber.

The beneficial effects of the utility model are：Tool construction is compact, size is short, without any can be movable zero Part, reliability are high；There is no rubber seal, do not influenceed by chemical mediator, temperature；Displacement range is big, and pressure consumption is low；Anti-erosion, Anti-fatigue ability improves.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of fluid conversion chamber.

Fig. 3 is state one schematic diagram of the fluid by switching runner.

Fig. 4 is state two schematic diagram of the fluid by switching runner.

Fig. 5 is schematic diagram of the fluid Jing Guo backpressure passage.

Fig. 6 is the schematic diagram of splitter head shape one.

Fig. 7 is the schematic diagram of splitter head shape two.

Fig. 8 is the schematic diagram of splitter head shape three.

Wherein, 1, outer barrel, 2, valve body, 3, fluid conversion chamber, 4, fluid intake, 5, fluid issuing, 6, diffluence room, 7, vortex Room, 8, splitter, 9, switching runner, 10, backpressure passage.

Embodiment

Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.

The present embodiment provides a kind of auto-excitation type hydroscillator, as shown in figure 1, including outer barrel 1 and the valve being placed in outer barrel Body 2, the fluid conversion chamber 3 of fluid intake 4 and fluid issuing 5 is communicated with the valve body 2, is provided with and splits in fluid conversion chamber 3 Fluid conversion chamber 3 is separated into diffluence room 6 and minor air cell 7, and the switching stream of connection diffluence room 6 and minor air cell 7 by point 8, the splitter 8 Road 9, the switching runner 9 at least two, and it is symmetrical relative to the axis of valve body 2；It is also same at least provided with two in the valve body 2 The backpressure passage 10 of Shi Liantong fluid intakes 4, diffluence room 6 and minor air cell 7, the backpressure passage 10 is relative to the axis pair of valve body 2 Claim, as shown in Figure 2.

Further, the both ends of the outer barrel 1 have sealing screw thread, are easy to be connected with other manifolds.For example, outer barrel 1 One end is sealing box thread, and the other end is sealing male thread.

Further, the outer barrel 1 include upper and lower two sections, by sealing be threadedly coupled to together after, be welded as one it is whole Body.This structure is easy to valve body being assembled into outer barrel.

Further, the valve body 2 is cylindrical structure, and its periphery and the inwall of outer barrel 1 interference fit composition metal are close Seal structure.

Further, the middle part of the face fluid intake of splitter 8.

Further, the head section of splitter 8 is small trapezium structure, as shown in Figure 6；Or it is triangular structure, such as Fig. 7 It is shown；Or be arc structure, as shown in Figure 8.

Further, the switching runner 9 is distributed in the surrounding of splitter 8, and tangent with minor air cell 7.

Further, the backpressure passage 10 is distributed on the outside of fluid conversion chamber.

In use, coiled tubing, which connects this auto-excitation type hydroscillator, enters well, according to oil field operation type reasonable selection sheet The riding position of auto-excitation type hydroscillator.During turn on pump, the fluid that ground is pumped into passes through hydroscillator, attached by wall attachment effect In the side of splitter 8, be vortexed and gradually strengthen as shown in figure 3, minor air cell 7 produces；At the same time, produced in backpressure passage 10 Back pressure, as shown in figure 5, when this pressure value continues to rise to certain limit, the fluid of the position of splitter 8 can produce runner switching Trend, the trend gradually strengthen, until runner switches completely, as shown in Figure 4；Switch with runner, the vortex in minor air cell 7 by Turn weak by force and strengthen again.Periodic feature is rendered as with upper runner handoff procedure so that hydroscillator fluid issuing 5 sprays The fluid of injection is at times strong and at other times weak, drives hydroscillator to produce periodic vibratory impulse back and forth, so as to reduce tubing string and the borehole wall Between frictional resistance, increase tubing string extension drilling depth.

Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvement or deformation can also be made, these improve or Deformation also should be regarded as the scope of protection of the utility model.

Claims

1. a kind of auto-excitation type hydroscillator, including outer barrel and the valve body that is placed in outer barrel, it is characterised in that：Set in the valve body There is the fluid of connection fluid intake and fluid issuing conversion chamber, fluid conversion intracavitary is provided with splitter, and fluid is changed chamber by the splitter It is separated into diffluence room and minor air cell, and the switching runner of connection diffluence room and minor air cell, the switching runner at least two, and phase It is symmetrical for spindle of valve body line；Also fluid intake, diffluence room and minor air cell are connected in the valve body simultaneously at least provided with two Backpressure passage, the backpressure passage are symmetrical relative to spindle of valve body line.

A kind of 2. auto-excitation type hydroscillator according to claim 1, it is characterised in that：The both ends of the outer barrel have close Seal screw thread.

A kind of 3. auto-excitation type hydroscillator according to claim 1, it is characterised in that：The outer barrel includes upper and lower two Section, after being threadedly coupled to together by sealing, it is welded as a whole.

A kind of 4. auto-excitation type hydroscillator according to claim 1, it is characterised in that：The valve body is cylinder knot Structure, its periphery form shape metallic leak-proof structure with outer tube inner wall interference fit.

A kind of 5. auto-excitation type hydroscillator according to claim 1, it is characterised in that：The splitter face fluid intake Middle part.

A kind of 6. auto-excitation type hydroscillator according to claim 1 or 5, it is characterised in that：Splitter head section For small trapezium structure, or it is triangular structure, or is arc structure.

A kind of 7. auto-excitation type hydroscillator according to claim 1, it is characterised in that：The switching runner is distributed in institute Splitter surrounding is stated, and it is tangent with minor air cell.

A kind of 8. auto-excitation type hydroscillator according to claim 1, it is characterised in that：The backpressure passage is around fluid Change and be distributed on the outside of chamber.