CN207033346U - A kind of PDC waterpower reamer - Google Patents
A kind of PDC waterpower reamer Download PDFInfo
- Publication number
- CN207033346U CN207033346U CN201720864112.0U CN201720864112U CN207033346U CN 207033346 U CN207033346 U CN 207033346U CN 201720864112 U CN201720864112 U CN 201720864112U CN 207033346 U CN207033346 U CN 207033346U
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- reamer
- spindle
- waterpower
- pdc
- reaming hole
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Abstract
The utility model discloses a kind of PDC waterpower reamer, including body and it is connected to the top connection and lower contact at body both ends, the upper spindle and lower spindle to link together is provided with body, and upper spindle and lower spindle can slide up and down in body simultaneously, the upper end of upper spindle, which is provided with, to be cut off, the outer end cut off can be moved in the stopper slot in inner body wall, and spring is cased with the outer wall of lower spindle, and the lower end of upper spindle contacts with spring；Window is evenly equipped with the reaming hole section of body, cutter hub is provided with by rotating shaft in window, partial gear is provided with the inside of rotating shaft end on cutter hub, is provided with the outer wall of upper spindle and coordinates teeth groove with partial gear.Two or more reamers are applied in combination the utility model, and segmented progressively opens each reamer, solve the problems, such as that single reamer can not meet reaming hole depth, substantially increase the reaming hole depth once gone into the well.
Description
Technical field
A kind of PDC waterpower reamer is the utility model is related to, belongs to offshore drilling technical field.
Background technology
It is a kind of brand-new marine well-digging technique that offshore drilling in recent years proposes with setting of casing technique is bored, the technique is bored
Well, setting of casing and well cementation are once completed, and can save a large amount of trip times, and every mouthful of well can save millions of costs, and this skill
Maximum difficult point is that pull length is needed more than 1500 meters in art, due to the continuous development of drill bit, drilling well depth of once going into the well
Degree improves constantly, but traditional waterpower reamer reaming hole depth can only achieve 300~800 meters, and reamer is limited by structure
Reaming hole depth is unable to reach the drilling depth of drill bit, causes many drilling wells to be made a trip due to the abrasion of reamer, adds big
The workload and drilling time of amount, also cause not realizing always at home with brill setting of casing technique.
In addition, technology both domestic and external can not also realize single 1500 meters of reamer reaming hole depth, double reamer reaming hole works at present
Skill needs repeatedly to unlock reamer cutter hub.The method meter of traditional reamer generally " using pump pressure × piston area=thrust "
The thrust of reamer is calculated, but the calculating of this method is very inaccurate, because thering are many instruments to produce pressure drop in whole drill string,
Pump pressure is delivered to when on reamer and not equal to the pump pressure of well head, is so easy for producing not unlocking or misreading and is locked phenomenon, leads
Cause down-hole accident.
Utility model content
In order to solve the technical problem that existing reamer drilling depth is inadequate and releasing force is inaccurate, the utility model
A kind of PDC waterpower reamer is provided, so as to realize that reaming hole depth is consistent with drilling depth, drilling efficiency is improved and ensures solution
The success rate of lock.
The technical solution of the utility model：A kind of PDC waterpower reamer, including body and it is connected to the upper of body both ends
Joint and lower contact, the upper spindle and lower spindle to link together is provided with body, and upper spindle and lower spindle can be same
Slided up and down in Shi Ben bodies, the upper end of upper spindle, which is provided with, to be cut off, and the outer end cut off can be in the stopper slot in inner body wall
It is mobile, spring is cased with the outer wall of lower spindle, the lower end of upper spindle contacts with spring；It is uniform in the reaming hole section of body
There is window, cutter hub is provided with by rotating shaft in window.
Further, partial gear is provided with the inside of rotating shaft end on the cutter hub, partial gear is by more than 2
The profile geometry tooth composition of quantity.
Further, it is provided with the outer wall of the upper spindle and coordinates teeth groove with the partial gear on cutter hub.
Further, the external diameter of the reaming hole section is more than the two ends external diameter of body, is evenly equipped with the outer wall of reaming hole section convex
The sintered carbide ball risen.
Further, the lower end oral area of the lower spindle is provided with flow-limiting valve.
Further, it is provided with limited block above the window oral area.
Further, the outer end cut off is connected with stop collar, and stop collar can move in the stopper slot in inner body wall.
Due to using above-mentioned technical proposal, the utility model has the advantage of：
1st, two or more reamers are applied in combination the utility model, and segmented progressively opens each reaming hole
Device, solve the problems, such as that single reamer can not meet reaming hole depth, substantially increase the reaming hole depth once gone into the well；
2nd, the handle of a knife of traditional reamer cutter hub rotates the space of occupancy in the axial direction can become big, this allow for many times by
Limitation to structure can not design or can sacrifice the intensity at some positions, and the cutter hub on the utility model reamer uses tooth
Wheeled involute structure, big quantity space is saved, improves structural strength；In addition, traditional reamer cutter hub is in use
Easily there is stuck situation, and cutter hub opening dimension it is difficult to ensure that, the involute structure on cutter hub of the present utility model
Transmitting thrust is relatively reliable, and opening dimension is more accurate；
3rd, the utility model controls the shear strength cut off by the way of flow-limiting valve controls flow, makes reamer releasing force more
It is accurate to add, and use is more safe and reliable., need to be meanwhile the utility model is due to being used in combination using multiple reamers
Unlocked one by one when different, so must calculate accurately, if down-hole accident can all be caused by not unlocking or misreading lock,
And discharge capacity is identical in whole drill string, therefore, the utility model is accurate by the uninterrupted of flow-limiting valve and the relation of discharge capacity
Really control the releasing force of reamer cutter hub；
4th, the cylindrical upper tungsten carbide button of reamer, can prevent due to cylindrical and wall friction and cause after damaging cutter hub without
The situation that method is stretched out, while can work as stabilizer when cutter hub does not open and use；
In summary, the utility model, which solves single reamer, can not realize drilling depth of once going into the well more than 1500 meters
Problem, and using the reaming hole mode for first using bottom reamer reaming hole again with top reamer reaming hole so that whole reaming hole process
In reamer need to only be unlocked once, avoid the problem of first need to repeatedly being unlocked with top reamer again with bottom reamer, its
It is secondary to use discharge capacity unlocking structure, because discharge capacity is consistent all the time in whole drill string and well, and it is pumped each position in drill string
Put it is all different because there is many instruments to produce pressure drop, when pump pressure is delivered on reamer and not equal to institute on pressure gauge
The value of display, the problem of pump pressure unblock is inaccurate is avoided using discharge capacity unlocking structure.The utility model can be used not only for
Bore in setting of casing technique, can be also used for the various drillng operations for needing reaming hole.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is Fig. 1 C enlarged drawings；
Fig. 3 is Fig. 1 E enlarged drawings；
Fig. 4 is structural representation when top reamer is opened when the utility model is implemented；
Fig. 5 is structural representation top reamer is opened with bottom reamer when the utility model is implemented simultaneously when.
Description of reference numerals：1- top connections, 2- upper spindles, 3- are cut off, 4- bodies, 5- limited blocks, 6- cutter hubs, and 7- hard closes
Gold goal, 8- springs, 9- lower spindles, 10- flow-limiting valves, 11- lower contacts, 12- rotating shafts, 13- reaming hole sections, 14- windows, 15- stopper slots,
16- stop collars, 17- teeth groove, 18- partial gears.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, it is right with reference to the accompanying drawings and examples
The utility model is described in further detail.
Embodiment of the present utility model：The structural representation of PDC waterpower reamers as shown in Figures 1 to 3, including body 4 with
And the top connection 1 and lower contact 11 at the both ends of body 4 are connected to, the upper spindle 2 to link together and the lower heart are provided with body 4
Axle 9, and upper spindle 2 and lower spindle 9 can slide up and down in body 4 simultaneously, the upper end of upper spindle 2, which is provided with, cuts off 3, described
Cut off 3 outer end to be connected with stop collar 16, stop collar 16 can move in the stopper slot 15 on the inwall of body 4, in lower spindle 9
Spring 8, lower end and the Elastic Contact of spring 8 of upper spindle 2 are cased with outer wall；Window 14 is evenly equipped with the reaming hole section 13 of body 4,
Cutter hub 6 is provided with by rotating shaft 12 in the window 14, and limited block 5 is provided with above the oral area of window 14, prevent from turning on cutter hub 6 and
Lose reaming hole effect.Partial gear 18 is provided with the inside of the end of rotating shaft 12 on cutter hub 6, partial gear 18 is by 2
The profile geometry tooth composition of above quantity, is provided with the outer wall of upper spindle 2 and coordinates teeth groove 17 with partial gear 18.It is described
The external diameter of reaming hole section 13 is more than the two ends external diameter of body 4, and the sintered carbide ball of projection is evenly equipped with the outer wall of reaming hole section 13
7, the sintered carbide ball 7 inlayed on reaming hole section 13 is cylindrical, can prevent due to reaming hole section 13 is cylindrical and wall friction and after damaging
So that the situation that cutter hub 6 can not stretch out, while can work as stabilizer when cutter hub 6 does not open and use.The lower port of the lower spindle 9
Portion is provided with flow-limiting valve 10, because discharge capacity is identical in whole drill string, therefore passes through the size of flow-limiting valve 10 and discharge capacity
Relation controls the releasing force of reamer upper knife body 6 exactly.
Operation principle of the present utility model：Referring to Fig. 4, two PDC waterpower reamers, top are installed first on drill string
PDC waterpower reamers are fitted without latch-up structure, during normal drilling well in the presence of mud pressure top PDC waterpower reamers
Cutter hub is opened and starts reaming hole, and bottom PDC waterpower reamers are provided with latch-up structure, now keep lock-out state, and its cutter hub 6 exists
Do not opened in body；Referring to Fig. 5, stop drilling when drilling depth reaches 750~850 meters or rate of penetration is substantially slack-off,
Drill string above carries to 5 meters, increase mud displacement is to being more than 50L/S, circulating mud 10 minutes, now by bottom PDC waterpower reamers
Unblock, its cutter hub is opened, recover 30L/S discharge capacities, transfer drill string, continuing reaming hole using bottom PDC waterpower reamers makees
Industry；Stop suppressing after the completion of drilling well, the cutter hub (6) of upper and lower part PDC waterpower reamers can be automatic under the screen resilience of spring
Withdraw in body, above carrying drill string can take out reamer from sleeve pipe, complete reaming hole operation.
Claims (7)
1. a kind of PDC waterpower reamer, including body (4) and the top connection (1) and lower contact that are connected to body (4) both ends
(11), it is characterised in that：The upper spindle (2) and lower spindle (9) to link together, and upper spindle (2) are provided with body (4)
It can be slided up and down simultaneously in body (4) with lower spindle (9), the upper end of upper spindle (2), which is provided with, cuts off (3), cuts off (3)
Outer end can be moved in the stopper slot (15) on body (4) inwall, and spring (8), upper spindle are cased with the outer wall of lower spindle (9)
(2) lower end and spring (8) Elastic Contact；Window (14) is evenly equipped with the reaming hole section (13) of body (4), in window (14)
Cutter hub (6) is provided with by rotating shaft (12).
2. PDC waterpower reamer according to claim 1, it is characterised in that：Held on the cutter hub (6) close to rotating shaft (12)
Inner side be provided with partial gear (18), partial gear (18) is made up of the profile geometry tooth of more than 2 quantity.
3. PDC waterpower reamer according to claim 1 or 2, it is characterised in that：Set on the outer wall of the upper spindle (2)
It is equipped with and coordinates teeth groove (17) with the partial gear (18) on cutter hub (6).
4. PDC waterpower reamer according to claim 1, it is characterised in that：Reaming hole section (13) is outer on the body (4)
Footpath is more than the two ends external diameter of body (4), and the sintered carbide ball (7) of projection is evenly equipped with the outer wall of reaming hole section (13).
5. PDC waterpower reamer according to claim 1, it is characterised in that：The lower end oral area installation of the lower spindle (9)
Current limiting valve (10).
6. PDC waterpower reamer according to claim 1, it is characterised in that：It is provided with above window (14) oral area
Limited block (5).
7. PDC waterpower reamer according to claim 1, it is characterised in that：The outer end for cutting off (3) and stop collar
(16) connect, stop collar (16) can move in the stopper slot (15) on body (4) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720864112.0U CN207033346U (en) | 2017-07-17 | 2017-07-17 | A kind of PDC waterpower reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720864112.0U CN207033346U (en) | 2017-07-17 | 2017-07-17 | A kind of PDC waterpower reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207033346U true CN207033346U (en) | 2018-02-23 |
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ID=61464626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720864112.0U Active CN207033346U (en) | 2017-07-17 | 2017-07-17 | A kind of PDC waterpower reamer |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217991A (en) * | 2017-07-17 | 2017-09-29 | 贵州高峰石油机械股份有限公司 | A kind of deep-well reaming hole method and PDC waterpower reamers |
-
2017
- 2017-07-17 CN CN201720864112.0U patent/CN207033346U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217991A (en) * | 2017-07-17 | 2017-09-29 | 贵州高峰石油机械股份有限公司 | A kind of deep-well reaming hole method and PDC waterpower reamers |
| CN107217991B (en) * | 2017-07-17 | 2023-08-11 | 贵州高峰石油机械股份有限公司 | Deep well reaming method and PDC hydraulic reamer |
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