CN201321821Y - Hydraulic type underreamer while drilling - Google Patents
Hydraulic type underreamer while drilling Download PDFInfo
- Publication number
- CN201321821Y CN201321821Y CNU2008201245650U CN200820124565U CN201321821Y CN 201321821 Y CN201321821 Y CN 201321821Y CN U2008201245650 U CNU2008201245650 U CN U2008201245650U CN 200820124565 U CN200820124565 U CN 200820124565U CN 201321821 Y CN201321821 Y CN 201321821Y
- Authority
- CN
- China
- Prior art keywords
- ball seat
- snap ring
- locating snap
- following
- fluid pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a hydraulic type underreamer while drilling, which comprises a body, upper and lower connectors, a mandrel, a ball seat rack connected with the mandrel, a ball seat matched with the ball seat rack, a cutter body and a piston sleeved on the mandrel. The body includes an upper body and a lower body; an upper stop ring and a lower stop ring are installed between the upper body and the lower body; the cutter body is mounted between the upper stop ring and the lower stop ring; and the contact surfaces of the upper stop ring ,the lower stop ring and the cutter body are inclined surfaces; pressure transmitting holes are formed on the lower body and the ball seat rack respectively; and the ball seat, the ball seat rack, the piston, the lower connector and the lower body form a closed space. The utility model has the advantages that guide grooves are added on the body and a blade, and the upper and the lower stop rings are arranged in the V shape, thereby effectively preventing radial and axial movements of the blade and improving the cutting stability; a step-shaped structure of cutting mixed distribution of teeth is studied according to different layers of the earth, thereby improving cutting capability, cutting efficiency and the security of tools; in addition, the device has the advantages of reasonable structure design, convenient operation and use, and use-cost reduction.
Description
Technical field
The utility model belongs to oil, gas drilling technical field, particularly relates to a kind of fluid pressure type drill-following reamer that increases borehole diameter in given scope.
Background technology
In recent years, along with increasing of deep-well, complicated well drilling exploitation, the especially improvement of well-completing process is had higher requirement to the function and the use of underreamer instrument.As: in the drilling program of deep-well or bad ground, need to use multilayer sleeve and tail pipe usually, simultaneously make well enough big again, so that handle contingency and satisfy best completion and oil recovery designing requirement, but must consider that the well head well is as far as possible little, to reduce sleeve pipe expense expenditure.Given this, do not reduce gap between well and the sleeve pipe with the condition that satisfies cementing quality and require under, can only be the gap that reduces as much as possible between the different casing programs, have only like this by using reamer just can finish.At plastic formation or the stratum that leakage easily takes place, need be lowered to unconventional this interval of sleeve pipe shutoff in advance, also have only the reamer of use just can finish; On saline bed, easy undergauge stratum, can effectively enlarge borehole diameter, prevent the generation of accident; In open-hole gravel pack sand control treatment process, long-pending in order to improve the sand control quality and to cross pasta, enlarge bore hole section internal diameter and be very important.
The off-balance bit that enlarges the well use at present is unfavorable for deflecting, homemade reamer unreasonable structure, and reaming hole efficient is low, job security is poor, application life is low, is difficult to satisfy the technical requirements of marine drilling; And using import reamer service fee costliness, part-structure is unreasonable.
Summary of the invention
The utility model for solve the technical problem that exists in the known technology provide a kind of reasonable in design, easy for operation, reduce use cost and can increase substantially the fluid pressure type drill-following reamer of drilling well reaming hole work efficiency.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: the fluid pressure type drill-following reamer, comprise the top sub and the bottom joint that are connected with body, be installed in intrinsic mandrel, the ball seat frame that its upper end is connected with mandrel, by pin and the equipped ball seat of ball seat frame, cutter hub and be sleeved on piston on the mandrel, it is characterized in that: described body is that upper body and lower body constitute, locating snap ring and following locating snap ring are being installed between upper body and the lower body, between last locating snap ring and the following locating snap ring cutter hub is housed, the upper body inwall is shaped near lower end position and is used for the spacing spacing shoulder of locating snap ring, on lower body and ball seat frame, be equipped with pressure transmission hole in the same way, described ball seat, the ball seat frame, piston, bottom joint and lower body form confined space.
The utility model can also adopt following technical scheme:
The described locating snap ring and following locating snap ring and cutter hub contact surface gone up is respectively the inclined-plane.
Described going up on locating snap ring and following locating snap ring and the cutter hub contact surface has gathering sill, and cutter hub and last locating snap ring and following locating snap ring are installed movingly by gathering sill.
The wing of described cutter hub is a segmented lengthening gauge structure, is provided with guiding gutter in the middle of the wing, and cutter tooth is the scalariform layout.
The described locating snap ring upper end of going up is by the screwed connection restraining position ring block.
Between upper body and last locating snap ring, spring is housed by spring base.
Described ball seat outer wall is provided with the sealing ring that is used for ball sealer mounting pressure transmission hole.
Pressure transmission hole on described lower body upper end is connected with nozzle, and this pressure transmission hole communicates with pressure transmission hole on the ball seat frame.
Advantage and the good effect that the utlity model has are:
(1) improve cutting stability: this instrument is increasing gathering sill on the body He on the wing, upper and lower locating snap ring becomes V-shape simultaneously, can prevent the radial and axial motion of wing effectively, and the common wing of opening downwards changed into and upwards open wing, in drilling process, wing is subjected to thrust upwards all the time like this.
(2) improve cutting power: the segmented lengthening is protected effective length of cut that the footpath wing can increase wing, and mixes the cloth tooth according to the stepped mill of cutting of Different Strata research, to improve stock-removing efficiency and instrument safety, reduces the BHA vibration.
(3) improve the instrument safety: outside all moving-members of this instrument are all installed seal, and in the nozzle bottom ball-and-seat are installed, and prevent that impurity from entering tool interior; Ball seat is sheared in design, shears rear nozzle when ball seat and communicates with interior annular space, begins to wash wing, and the promotion piston opens wing, has realized that so promptly the flushing reamer blade can wash drill bit again.
(4) maximum outside diameter of reamer can be regulated; Last locating snap ring and spacing ring cooperation have limit function, regulate the maximum outside diameter of reamer by the last button situation of regulating locating snap ring and spacing ring.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the I portion enlarged drawing of Fig. 1;
Fig. 4 is the utility model structure of the cutter body schematic diagram
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the utility model working state schematic representation.
Among the figure: 1, top sub; 2, body; 2-1, upper body; 2-2, lower body; 2-3, lower body pressure transmission hole; 3, spring; 4, spacing ring; 5, go up locating snap ring; 6 cutter hubs; 6-1, guiding gutter; 6-2, gathering sill; 7, following locating snap ring; 8, piston; 9, nozzle; 10, shear pin; 11, ball seat frame; 11-1, pressure transmission hole; 12, bottom joint; 13, mandrel; 14, steel ball; 15, ball seat; 15-1, pressure transmission aperture; 15-2, macropore; 15-3, T-shape pin; Spring on 15-4, the ball seat; 15-5, blind plugging.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1-Fig. 5, the fluid pressure type drill-following reamer, the ball seat frame 11 that comprise the top sub 1 that is connected with body 2 and bottom joint 12, be installed in mandrel 13 in the body 2, its upper end is connected with mandrel 13, the ball seat 15, the cutter hub 6 that are equipped with by shear pin 10 and ball seat frame and be sleeved on piston 8 on the mandrel, described body is that upper body 2-1 and lower body 2-2 constitute, in that locating snap ring 5 and following locating snap ring 7 are installed between upper body and the lower body, between last locating snap ring and the following locating snap ring cutter hub 6 is housed.Between upper body and last locating snap ring, spring 3 is housed by spring base.The described locating snap ring and following locating snap ring and cutter hub contact surface gone up is respectively the inclined-plane, one-tenth V font, can make like this cutter hub open with working angles in more steady, reduced impact.Be shaped on gathering sill on the inclined-plane of last locating snap ring and following locating snap ring, have gathering sill 6-2 on cutter hub and the face that two locating snap rings contact, the direction of gathering sill becomes miter angle with axial, and last locating snap ring is installed by gathering sill movingly with following locating snap ring.The wing of described cutter hub is a segmented lengthening gauge structure, is provided with guiding gutter 6-1 in the middle of the wing, and its cutter tooth is the scalariform layout.The upper body inwall is shaped near lower end position and is used for the spacing spacing shoulder of locating snap ring, there is the spacing ring 4 that can regulate the locating snap ring axial stroke described locating snap ring 5 upper ends of going up by screwed connection, after moving on to a certain degree on the spacing ring, contact with body, move on stopping, locating snap ring is spacing in the realization.Be equipped with in the same way pressure transmission hole 2-3 and 11-1 on lower body 2-2 and ball seat frame 11, described ball seat, ball seat frame, piston, bottom joint and lower body form confined space.Described ball seat frame 11 is cylindric, and the bottom inner nosepiece wall is the undergauge structure, is used to pounce on catch ball seat 15, is provided with pressure transmission hole 11-1 in ball seat frame side, stops to move down when ball seat moves down into joint undergauge place, bottom, exposes the pressure transmission hole on the ball seat frame simultaneously.The upper and lower groove that is shaped on of described ball seat 14 outer walls is equipped with the sealing ring that is used for ball sealer mounting pressure transmission hole in groove, the ball seat inwall has bore hole, bore hole dress T-shape pin and spring, and the outer wall bore hole blocks with blind plugging.Before shearing, ball seat is used for the pressure transmission hole on the ball sealer mounting; Be shaped on macropore 15-2 at the ball seat center, the periphery of macropore also is shaped on equally distributed 8 pressure transmission aperture 15-1, and macropore is identical with pressure transmission aperture direction; Ball seat is used to throw steel ball 14, when steel ball is thrown into ball seat, under the effect of fluid pressure, T-shape pin 15-3 is subjected to horizontal extruding, spring 15-4 on ball seat compression, and ball 14 enters the ball seat 15 rear spring 15-4 that puts in place and resets, T-shape pin 15-3 resets, and blocks ball 14, realizes its location.Pressure transmission hole 2-3 on described lower body upper end is connected with nozzle 9, and this pressure transmission hole communicates with pressure transmission hole on the ball seat frame.Nozzle is provided with gland, and this gland is in impaction state before reamer work.
Operating principle of the present utility model is:
As Fig. 1 and shown in Figure 6, the hydraulic pressure reamer is in contraction state, when the needs reaming hole creeps into, throw steel ball 14 earlier, after steel ball is fallen on the ball seat 15, under the effect of fluid pressure difference, cut off shear pin 10, and promotion ball seat 15 moves downward the spacing place to ball seat frame 11, get through inner annular space of reamer and outer annular space passage, drilling fluid washes the wing of cutter hub 6 earlier by aperture in the body 2 and nozzle 9, ball seat 15 plays the effect of shunting again simultaneously, and a part of drilling liquid flow washes drill bit, cools off lower drilling tool and take sand through the interlayer of ball seat.After wing is rinsed well, increasing pump moves upward towards promoting piston 8, piston promotes locating snap ring 7 down, following locating snap ring 7 promotes wing along the gathering sill on the body outside and move up (promptly carrying out axially-movable and radial motion simultaneously), the last locating snap ring 5 of wing promotion simultaneously moves upward and compresses spring 3, when last locating snap ring 5 touched the spacing place of body, axially-movable stopped, wing open fully and stable after begin reaming hole.After reaming hole finished, when termination of pumping or reduction pump pressure, reamer inner and outer ring pneumatics difference reduced, and under the effect of spring force, the reaming hole wing is regained along gathering sill.
Above embodiment is the technical scheme of unrestricted the present invention's design in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. fluid pressure type drill-following reamer, comprise the top sub and the bottom joint that are connected with body, be installed in intrinsic mandrel, the ball seat frame that its upper end is connected with mandrel, by pin and the equipped ball seat of ball seat frame, cutter hub and be sleeved on piston on the mandrel, it is characterized in that: described body is that upper body and lower body constitute, locating snap ring and following locating snap ring are being installed between upper body and the lower body, between last locating snap ring and the following locating snap ring cutter hub is housed, the upper body inwall is useful on the spacing spacing shoulder of locating snap ring near lower end position, on lower body and ball seat frame, be equipped with pressure transmission hole in the same way, described ball seat, the ball seat frame, piston, bottom joint and lower body form confined space.
2. fluid pressure type drill-following reamer according to claim 1 is characterized in that: the described locating snap ring and following locating snap ring and cutter hub contact surface gone up is respectively the inclined-plane.
3. fluid pressure type drill-following reamer according to claim 2 is characterized in that: described going up on locating snap ring and following locating snap ring and the cutter hub contact surface has gathering sill, and cutter hub and last locating snap ring and following locating snap ring are installed movingly by gathering sill.
4. fluid pressure type drill-following reamer according to claim 1 is characterized in that: the wing of described cutter hub is a segmented lengthening gauge structure, is provided with guiding gutter in the middle of the wing, and cutter tooth is the scalariform layout.
5. fluid pressure type drill-following reamer according to claim 1 is characterized in that: the described locating snap ring of going up is by the screwed connection spacing ring.
6. fluid pressure type drill-following reamer according to claim 1 is characterized in that: by spring base spring is housed between upper body and last locating snap ring.
7. fluid pressure type drill-following reamer according to claim 1 is characterized in that: described ball seat outer wall is provided with the sealing ring that is used for ball sealer mounting pressure transmission hole.
8. fluid pressure type drill-following reamer according to claim 1 is characterized in that: described ball seat inwall has bore hole, and T-shape pin and spring are housed in the bore hole, and the bore hole outer wall is by the blind plugging shutoff.
9. fluid pressure type drill-following reamer according to claim 1 is characterized in that: pressure transmission hole on described lower body upper end is connected with nozzle, and this pressure transmission hole communicates with pressure transmission hole on the ball seat frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201245650U CN201321821Y (en) | 2008-12-25 | 2008-12-25 | Hydraulic type underreamer while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201245650U CN201321821Y (en) | 2008-12-25 | 2008-12-25 | Hydraulic type underreamer while drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201321821Y true CN201321821Y (en) | 2009-10-07 |
Family
ID=41159207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201245650U Expired - Fee Related CN201321821Y (en) | 2008-12-25 | 2008-12-25 | Hydraulic type underreamer while drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201321821Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003146A (en) * | 2010-11-04 | 2011-04-06 | 中国石油天然气集团公司 | Full-hydraulic reamer |
| CN102364040A (en) * | 2011-11-21 | 2012-02-29 | 中国海洋石油总公司 | Underground sleeve steel brush cleaner |
| CN102373885A (en) * | 2010-08-10 | 2012-03-14 | 中国石油化工集团公司 | Power reamer while drilling for oil and gas well drilling |
| CN102635312A (en) * | 2012-04-24 | 2012-08-15 | 西南石油大学 | Hydraulic telescoping rigid support reaming-while-drilling tool |
| CN104747082A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Hydraulic expansion type reamer while drilling |
| CN104747085A (en) * | 2013-12-26 | 2015-07-01 | 贵州高峰石油机械股份有限公司 | Hydraulic hole opener and hole opening method |
| CN105201408A (en) * | 2015-09-06 | 2015-12-30 | 中国石油天然气集团公司 | Near-bit reamer |
| CN105683486A (en) * | 2013-11-25 | 2016-06-15 | 哈利伯顿能源服务公司 | Seal assembly for wellbore tool |
| CN110905446A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Double-ball switch device |
| CN111720085A (en) * | 2020-06-30 | 2020-09-29 | 合力（天津）能源科技股份有限公司 | Adjustable well trimmer step by step |
-
2008
- 2008-12-25 CN CNU2008201245650U patent/CN201321821Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373885A (en) * | 2010-08-10 | 2012-03-14 | 中国石油化工集团公司 | Power reamer while drilling for oil and gas well drilling |
| CN102373885B (en) * | 2010-08-10 | 2013-10-30 | 中国石油化工集团公司 | Power reamer while drilling for oil and gas well drilling |
| CN102003146B (en) * | 2010-11-04 | 2012-12-12 | 中国石油天然气集团公司 | Full-hydraulic reamer |
| CN102003146A (en) * | 2010-11-04 | 2011-04-06 | 中国石油天然气集团公司 | Full-hydraulic reamer |
| CN102364040A (en) * | 2011-11-21 | 2012-02-29 | 中国海洋石油总公司 | Underground sleeve steel brush cleaner |
| CN102364040B (en) * | 2011-11-21 | 2014-06-11 | 中国海洋石油总公司 | Underground sleeve steel brush cleaner |
| CN102635312A (en) * | 2012-04-24 | 2012-08-15 | 西南石油大学 | Hydraulic telescoping rigid support reaming-while-drilling tool |
| CN102635312B (en) * | 2012-04-24 | 2014-10-01 | 西南石油大学 | Hydraulic telescoping rigid support reaming-while-drilling tool |
| CN105683486A (en) * | 2013-11-25 | 2016-06-15 | 哈利伯顿能源服务公司 | Seal assembly for wellbore tool |
| CN105683486B (en) * | 2013-11-25 | 2018-04-06 | 哈利伯顿能源服务公司 | Seal assembly for wellbore tool |
| CN104747085A (en) * | 2013-12-26 | 2015-07-01 | 贵州高峰石油机械股份有限公司 | Hydraulic hole opener and hole opening method |
| CN104747082A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Hydraulic expansion type reamer while drilling |
| CN105201408B (en) * | 2015-09-06 | 2017-09-01 | 中国石油天然气集团公司 | A kind of nearly drill bit reamer |
| CN105201408A (en) * | 2015-09-06 | 2015-12-30 | 中国石油天然气集团公司 | Near-bit reamer |
| CN110905446A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Double-ball switch device |
| CN111720085A (en) * | 2020-06-30 | 2020-09-29 | 合力（天津）能源科技股份有限公司 | Adjustable well trimmer step by step |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201321821Y (en) | Hydraulic type underreamer while drilling | |
| WO2016150113A1 (en) | Positive displacement motor drill and rock breaking well drilling method therefor | |
| CN108547604B (en) | Drilling and stamping integrated device and method | |
| CN109882073A (en) | The double high-pressure stirring-spraying piles of reducing and its variable diameter method | |
| CN105156035B (en) | A kind of oscillating tooth PDC drill bit | |
| CN100516449C (en) | Slim-hole hydraulic controlled reducing reaming bit | |
| CN205823287U (en) | Ultrahigh pressure auxiliary rock TBM cutterhead | |
| CN108756733B (en) | Pulse impact rock breaking drill bit | |
| CN208981966U (en) | Twin-stage drill bit | |
| CN112483005A (en) | Rock breaking drill bit for downhole drilling tool | |
| CN107288540B (en) | A kind of oil/gas drilling volume increase connection makees device and method | |
| CN211201769U (en) | Down-the-hole hammer reverse circulation follow pipe drill bit suitable for large-diameter drilling | |
| CN102268966B (en) | Hard rock crushing drill bit and method for crushing hard rock | |
| CN109882102B (en) | Connecting rod type friction-reducing oscillation tool | |
| CN102373885B (en) | Power reamer while drilling for oil and gas well drilling | |
| CN205778560U (en) | It is bit Integrated that centering type hydraulic bores expansion | |
| CN104481411A (en) | Multi-purpose cooperative rotary cut radial self-rotation slit type inner concave multi-blade coreless drill bit | |
| CN204827244U (en) | Oscillating tooth PDC drill bit | |
| CN112253028B (en) | Forging and milling tool with adjustable outer diameter | |
| CN206458314U (en) | Underground double acting accelerator | |
| CN110295861B (en) | Tool for reducing equivalent circulating density | |
| CN210948505U (en) | Split type major diameter air reverse circulation down-the-hole hammer expands end drill bit | |
| CN109083593B (en) | Hydraulic pushing drill bit directional guiding drilling tool | |
| CN109915028B (en) | Battery type motor driven double speed PDC drill bit | |
| CN211038584U (en) | Downhole hydraulic borehole repairing and cleaning tool for well drilling |
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 |
Granted publication date: 20091007 Termination date: 20161225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |