CN105507815A - Hydraulically driven intra-casing radial drilling high-pressure rotary grinding head - Google Patents
Hydraulically driven intra-casing radial drilling high-pressure rotary grinding head Download PDFInfo
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- CN105507815A CN105507815A CN201410501687.7A CN201410501687A CN105507815A CN 105507815 A CN105507815 A CN 105507815A CN 201410501687 A CN201410501687 A CN 201410501687A CN 105507815 A CN105507815 A CN 105507815A
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- core
- bistrique
- hole
- grinding head
- lower contact
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Abstract
The invention discloses a hydraulically driven intra-casing radial drilling high-pressure rotary grinding head, comprising a lower connector, a body, a core and a grinding head. The lower connector is axially provided with an inner cavity, the body is in a tube, and the lower connector is connected with the tail of the body; the core is provided with an axial through hole and is arranged in the body, an enlarged diameter section of the core and the body covering outside are in interference fit, the tail of the core is in axial hermetic sliding fit with a cavity of the lower connector or the body, and an end of the core is connected with the grinding head; an end of the grinding head is conical, the grinding head is provided with jet holes in front and rear directions, and the jet holes are communicated with a cavity in the grinding head; both the body and the core are provided with radially distributed straight holes that are communicated with the inner cavity of the body, and a core straight hole is communicated with a core through hole. When jet drilling is carried out, a pump is started, the grinding head rotates at high speed and generates high-pressure water jets towards a stratum, the grinding head moves forward under the action of self-traction, and operation is complete when a jet bore reaches a design required depth.
Description
Technical field
The present invention relates to down-hole drilling power tool field, particularly a kind of hydro powered high pressure rotary bistrique being applicable to radial bore casing sidetracking.
Background technology
Hydraulic jetting radial drilling technology utilizes special junk bit to be drilled by sleeve pipe, re-uses high-pressure water jet and spray at the different directions of oil reservoir and different depth, thus get out the small diameter borehole of multiple level.The length of well in oil reservoir can be increased, expand drainage area, improve recovery ratio; Top well section can be reused, reduce drilling cost; The expense such as oil well management and environmental protection can be reduced.Hydraulic jetting radial drilling technology is significant to the transformation of well production increment, particularly old well production potential tapping.
When utilizing hydraulic jetting radial drilling technology to carry out operation, need first to window to target zone sleeve pipe, sleeve pipe is drilled.First target zone position is arrived by under steering gear oil pipe, grappling, recycling coiled tubing enters under motor, universal drive shaft and junk bit, pass through steering gear, make junk bit perpendicular to casing wall, turn on pump, motor is delivered to drill bit moment of torsion by universal drive shaft, start milling sleeve pipe, until sleeve pipe is worn out.After being drilled by sleeve pipe, trip out motor, universal drive shaft and junk bit, enter high-pressure hose and nozzle under using coiled tubing, nozzle, by after steering gear, enters in worn out eyelet, turn on pump smoothly, utilizes high-pressure water jet to spray broken rock.Meanwhile, what high-pressure hose produced at nozzle travels forward under tractive force effect, when spraying well and reaching the designing requirement degree of depth, and the end of job.
When hydraulic jetting radial drilling construction operation, because conventional casing sidetracking junk bit is connected on universal drive shaft, universal drive shaft is flexible shaft, swing radial and axial during junk bit work is larger, can not effectively feel relieved, condition of work is severe, thus its to drill the sleeve pipe used time longer, efficiency is not high.And drilling in sleeve pipe process, often there is drill bit and sprain and stop thus cause drill edge to burst apart and the situation of Drill Crack.In addition, prior art is for judging whether that drilling sleeve pipe does not have way intuitively, and the normal experience of operator that relies on carries out subjective judgement, and accuracy is difficult to determine, brings considerable influence to operating efficiency.
Chinese patent discloses a kind of hydraulic jetting radial drilling casing sidetracking target drill (patent No. 201220264177.9), comprise drill body, described drill body is provided with by subterminal external cylindrical surface the instruction screw be made up of easy removing material, and drill body external cylindrical surface given prominence to by described instruction screw.It has installed the instruction pin protruding from body cylindrical additional on the drill body end face of cylinder, judges whether successfully to window by it.Adopt this kind of structure, using in the process entered under coiled tubing, instruction pin is easily touched disconnected, causes successfully accurately to judge windowing.
Summary of the invention
The object of the invention is in order to overcome existing junk bit milling efficiency not high, easily to sprain the situation of stopping and rupturing, and casing sidetracking success or not is difficult to the deficiency of intuitive judgment, provides a kind of casing inner diameter of hydro powered to boring high pressure rotary bistrique.This bistrique can not only improve the efficiency of casing sidetracking, avoids spraining and stops and rupture, and can judge that whether casing sidetracking is successful intuitively; Milling sleeve pipe can not only be applied to, and may be used for injection and creep into.
The technical solution adopted for the present invention to solve the technical problems is:
The casing inner diameter of hydro powered, to a boring high pressure rotary bistrique, comprises lower contact, body, core and bistrique.Wherein: lower contact is axially arranged with inner chamber, body is cylindrical body, and lower contact is connected with body afterbody; Core is provided with axially extending bore, core interlude is provided with extension diameter section, core is located in body, core extension diameter section forms matched in clearance with the body being enclosed within outside, the cavity of the afterbody of core and lower contact or body forms axial seal and is slidably matched, the end of core is connected with bistrique after body end is stretched out, and the end bonding surface of core and body is sealed and matched; Bistrique end is conical, and bistrique and core junction are provided with the inner chamber through with core through hole, and bistrique is provided with the spray-hole of front and rear direction, the cavity connects of spray-hole and bistrique inside; Body and core are equipped with radially-arranged straight hole, and body straight hole is communicated with chamber body, and core straight hole is communicated with core through hole.
Such scheme also comprises: body is connected to form by two parts, forms one inclined-plane in two-part junction, and the front end face of core extension diameter section has inclined-plane, coordinates with inclined-plane, chamber body front end.Bistrique surface coverage carbide alloy, high-speed steel or other hard materials, on bistrique, the spray-hole of backward directions is multiple, and adopts bias to diagonally distribute.
When adopting the present invention to carry out radial bore casing sidetracking, do not need to use universal drive shaft, use high-pressure hose to connect lower contact.During operation of the present invention, do not need to use universal drive shaft, thus there is no axial swing, effectively can feel relieved, cut more stable.There is no universal drive shaft simultaneously, just eliminate the stock-removing efficiency caused because universal drive shaft wearing and tearing are even ruptured yet and reduce, the problem of poor stability.Bistrique is the structure of taper, compares normal drill bit, its stable cutting, and not easy to wear, efficiency is high, good reliability.
Bistrique has just started milling sleeve pipe, and milling goes out in eyelet and this process of worn out sleeve pipe, and pump pressure is changed significantly and regular, pump pressure in first constant, rear remarkable rising, then stablize, the last then stable trend that significantly declines, thus can judge easily to window successfully.Show ring with conventional drilling, drill and show compared with pin, judgement more fast, accurately and reliably, can not increase the cost of casing sidetracking operation, simple and easy to do.
When adopting the present invention for spraying brokenly rock, using high-pressure hose to connect lower contact, entering under bistrique, after steering gear, enter in worn out eyelet smoothly, turn on pump, under the effect of waterpower, bistrique starts High Rotation Speed, and inclined hole forward produces high-pressure water jet, sprays rock stratum, simultaneously, what bistrique produced at inclined hole backward travels forward under tractive force effect, when spraying well and reaching the designing requirement degree of depth, and the end of job.
Accompanying drawing explanation
Fig. 1 is the first example structure figure of the present invention;
Fig. 2 is the second example structure figure of the present invention.
1. lower contacts, 2. body, 3. core, 4. bistrique in figure, the 5. straight hole of body, the 6. straight hole of core, spray-hole 7., spray-hole, 9. shelves before body 8..
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1
The casing inner diameter being illustrated in figure 1 a kind of hydro powered, to boring high pressure rotary bistrique, comprises lower contact 1, body 2, core 3 and bistrique 4 four part.Body 2 inner chamber can hold core 3, body 2 surface has radially-arranged straight hole 5 to communicate with body 2 inner chamber, lower contact 1 and body 2 are together by a threaded connection, there is a cavity lower contact 1 inside, the afterbody of core 3 can be held, core 3 can be movable in this cavity, cylindrical in the middle part of core 3, smooth surface, match with body 2 inner chamber, there is through hole core 3 inside, there is radially-arranged straight hole 6 on surface, be communicated with interior bone, front portion is linked together by screw thread and bistrique 4, relative motion can be there is in both by the space of lower contact 1 internal cavities and lower contact 1, bistrique 4 is conical, surface coverage carbide alloy, high-speed steel or other hard materials, there are the oblique spray-hole of backward directions 8 and straight spray-hole forwards in surface, with the cavity connects of bistrique 4 inside, oblique spray-hole 8 is eccentrically set on the neighboring of bistrique columnar part.
Embodiment 2
The casing inner diameter being illustrated in figure 2 another kind of hydro powered, to boring high pressure rotary bistrique, comprises lower contact 1, body 2, core 3 and bistrique 4 four part.Body 2 is made up of cylindrical shell and body front 9 two parts, two parts are by being threaded togather, one groove is formed in two-part junction, body 2 inner chamber can hold core 3, body 2 surface has vertical straight hole 5 to communicate with body 2 inner chamber, lower contact 1 and body 2 are together by a threaded connection, there is a cavity lower contact 1 inside, the afterbody of core 3 can be held, core 3 can be movable in this cavity, cylindrical in the middle part of core 3, smooth surface, match with body 2 inner chamber, inclined-plane is had at columniform front end face, match with the inclined-plane of body 2 inner chamber, there is through hole core 3 inside, there is straight hole 6 on surface, be communicated with interior bone, front portion is linked together by screw thread and bistrique 4, relative motion can be there is in both by the space of lower contact 1 internal cavities and lower contact 1, bistrique 4 is conical, surface coverage carbide alloy, high-speed steel or other hard materials, there are the oblique spray-hole of backward directions 8 and straight spray-hole forwards in surface, with the cavity connects of bistrique 4 inside, oblique spray-hole 8 is eccentrically set on the neighboring of bistrique columnar part.
When adopting the present invention to carry out radial bore casing sidetracking, first turn on pump, under the effect of waterpower, core 3 and bistrique 4 entirety in lower contact 1 internal cavities travels forward, bistrique 4 is contacted with casing wall, the straight hole draining on core 3 surface make to be formed between core 3 and body 2 lower end cavity place produce pressure drop, core 3 is promoted backward with the overall opposing body 2 of bistrique 4, by the gap pressure release between body 2 and core 3, pressure drop reduces, core 3 and bistrique 4 travel forward again under hydraulic action, so just produce a dynamic equilibrium, core 3 is floated relative to body 2 with bistrique 4.Meanwhile the rearward inclined hole of bistrique 4 is sprayed water to oblique rear, thrust forward and the rotation torque along bistrique 4 radial direction is produced under the reaction force of water, bistrique 4 starts High Rotation Speed and is pressed on casing wall, carries out milling by the hard material on bistrique 4 surface to casing wall.Now pump pressure is unchanged.When bistrique 4 casing wall got out eyelet and reach after after certain diameter and the degree of depth, the eyelet forward on bistrique 4 is subject to the obstruction of casing wall, and pump pressure is raised, and at this moment bistrique 4 expands the eyelet drilled, until worn out casing wall.After worn out casing wall, on bistrique 4, eyelet is forward unimpeded, pump pressure is declined, returns to normal value, thus can judge to window successfully.
When adopting the present invention for spraying brokenly rock, using high-pressure hose to connect lower contact 1, bistrique is entered for 4 times, after steering gear, enter in worn out eyelet smoothly, turn on pump, under the effect of waterpower, bistrique 4 starts High Rotation Speed, and inclined hole forward produces high-pressure water jet, sprays rock stratum, simultaneously, what bistrique 4 produced at inclined hole backward travels forward under tractive force effect, when spraying well and reaching the designing requirement degree of depth, and the end of job.
The present invention is not limited in above-described embodiment, and such as, bistrique can be other shapes, and drill bit can be used to replace, and the inclined hole angle backward and forward on bistrique can be less than between 180 degree and selects arbitrarily being greater than 90 degree, and number can be selected arbitrarily.Every on technical scheme basis disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need creative work just can make technical characteristic wherein and replace and distortion, these are replaced and are out of shape all in the scope of protection of the invention.
Claims (3)
1. the casing inner diameter of hydro powered is to a boring high pressure rotary bistrique, and comprise lower contact, body, core and bistrique, it is characterized in that: lower contact is axially arranged with inner chamber, body is cylindrical body, and lower contact is connected with body afterbody; Core is provided with axially extending bore, core interlude is provided with extension diameter section, core is located in body, core extension diameter section forms matched in clearance with the body being enclosed within outside, the cavity of the afterbody of core and lower contact or body forms axial seal and is slidably matched, the end of core is connected with bistrique after body end is stretched out, and the end bonding surface of core and body is sealed and matched; Bistrique end is conical, and bistrique and core junction are provided with the inner chamber through with core through hole, and bistrique is provided with the spray-hole of front and rear direction, the cavity connects of spray-hole and bistrique inside; Body and core are equipped with radially-arranged straight hole, and body straight hole is communicated with chamber body, and core straight hole is communicated with core through hole.
2. the casing inner diameter of hydro powered according to claim 1 is to boring high pressure rotary bistrique, it is characterized in that: body is connected to form by two parts, form one inclined-plane in two-part junction, the front end face of core extension diameter section has inclined-plane, coordinates with inclined-plane, chamber body front end.
3. the casing inner diameter of hydro powered according to claim 1 and 2 is to boring high pressure rotary bistrique, it is characterized in that: bistrique surface coverage carbide alloy, high-speed steel or other hard materials, on bistrique, the spray-hole of backward directions is multiple, and adopts bias to diagonally distribute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501687.7A CN105507815B (en) | 2014-09-27 | 2014-09-27 | A kind of casing inner diameter of hydro powered to drilling high-pressure rotary bistrique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501687.7A CN105507815B (en) | 2014-09-27 | 2014-09-27 | A kind of casing inner diameter of hydro powered to drilling high-pressure rotary bistrique |
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| CN105507815A true CN105507815A (en) | 2016-04-20 |
| CN105507815B CN105507815B (en) | 2017-12-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130846A (en) * | 2019-05-06 | 2019-08-16 | 长江大学 | A kind of horizontal well impact type milling shoe tool |
| CN112227951A (en) * | 2020-10-31 | 2021-01-15 | 河南城建学院 | Non-excavation rig guide bit |
| CN113006710A (en) * | 2021-03-30 | 2021-06-22 | 褚氏工业科技(上海)有限公司 | Spiral drill rod for oil exploration |
| CN114109278A (en) * | 2021-12-07 | 2022-03-01 | 中国石油大学(北京) | Ox horn bending eccentric rotating sleeve guide shoe |
Citations (6)
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|---|---|---|---|---|
| US5402855A (en) * | 1993-03-10 | 1995-04-04 | S-Cal Research Corp. | Coiled tubing tools for jet drilling of deviated wells |
| US20100101864A1 (en) * | 2008-10-27 | 2010-04-29 | Olivier Sindt | Anti-whirl drill bits, wellsite systems, and methods of using the same |
| CN103256007A (en) * | 2013-05-24 | 2013-08-21 | 中国石油大学(北京) | Underground dynamic pressurizing drilling rig |
| CN103429838A (en) * | 2011-02-25 | 2013-12-04 | Cmte发展有限公司 | Fluid drilling head nozzle design |
| CN103835653A (en) * | 2014-03-25 | 2014-06-04 | 中国石油大学(北京) | Self-propelled rock debris grinding material straight-spinning jet mixing flow drill bit |
| CN204200084U (en) * | 2014-09-27 | 2015-03-11 | 中国石油化工集团公司 | A kind of casing inner diameter of hydro powered is to boring high pressure rotary bistrique |
-
2014
- 2014-09-27 CN CN201410501687.7A patent/CN105507815B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402855A (en) * | 1993-03-10 | 1995-04-04 | S-Cal Research Corp. | Coiled tubing tools for jet drilling of deviated wells |
| US20100101864A1 (en) * | 2008-10-27 | 2010-04-29 | Olivier Sindt | Anti-whirl drill bits, wellsite systems, and methods of using the same |
| CN103429838A (en) * | 2011-02-25 | 2013-12-04 | Cmte发展有限公司 | Fluid drilling head nozzle design |
| CN103256007A (en) * | 2013-05-24 | 2013-08-21 | 中国石油大学(北京) | Underground dynamic pressurizing drilling rig |
| CN103835653A (en) * | 2014-03-25 | 2014-06-04 | 中国石油大学(北京) | Self-propelled rock debris grinding material straight-spinning jet mixing flow drill bit |
| CN204200084U (en) * | 2014-09-27 | 2015-03-11 | 中国石油化工集团公司 | A kind of casing inner diameter of hydro powered is to boring high pressure rotary bistrique |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130846A (en) * | 2019-05-06 | 2019-08-16 | 长江大学 | A kind of horizontal well impact type milling shoe tool |
| CN112227951A (en) * | 2020-10-31 | 2021-01-15 | 河南城建学院 | Non-excavation rig guide bit |
| CN113006710A (en) * | 2021-03-30 | 2021-06-22 | 褚氏工业科技(上海)有限公司 | Spiral drill rod for oil exploration |
| CN114109278A (en) * | 2021-12-07 | 2022-03-01 | 中国石油大学(北京) | Ox horn bending eccentric rotating sleeve guide shoe |
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| Publication number | Publication date |
|---|---|
| CN105507815B (en) | 2017-12-22 |
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