CN107217991A - A kind of deep-well reaming hole method and PDC waterpower reamers - Google Patents
A kind of deep-well reaming hole method and PDC waterpower reamers Download PDFInfo
- Publication number
- CN107217991A CN107217991A CN201710581611.3A CN201710581611A CN107217991A CN 107217991 A CN107217991 A CN 107217991A CN 201710581611 A CN201710581611 A CN 201710581611A CN 107217991 A CN107217991 A CN 107217991A
- Authority
- CN
- China
- Prior art keywords
- waterpower
- pdc
- reamer
- reaming hole
- reamers
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a kind of deep-well reaming hole method and PDC waterpower reamers, the reamer includes body and is connected to the top connection and lower contact at body two ends, the upper spindle and lower spindle linked together is provided with body, and upper spindle and lower spindle can be slided up and down in body simultaneously, the upper end of upper spindle, which is provided with, to be cut off, moved in the stopper slot that the outer end cut off can be in inner body wall, spring is cased with the outer wall of lower spindle, the lower end of upper spindle is contacted 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 present invention, and segmented progressively opens each reamer, solve the problem of single reamer can not meet reaming hole depth, substantially increase the reaming hole depth once gone into the well.
Description
Technical field
The present invention relates to a kind of deep-well reaming hole method and PDC waterpower reamers, belong to offshore drilling technical field.
Background technology
It is a kind of brand-new marine well-digging technique that offshore drilling in recent years is proposed 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 continuing to develop for drill bit, and drilling well of once going into the well is deep
Degree is improved 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 that traditional reamer generally " uses pump pressure × piston area=thrust "
The thrust of reamer is calculated, but this method calculates very inaccurate, because thering are many instruments to produce pressure drop in whole drill string,
Pump pressure is delivered to when on reamer and is not equal to the pump pressure of well head, is so easy for producing not unlocking or misreading and locks phenomenon, leads
Cause down-hole accident.
The content of the invention
In order to solve the existing technical problem that reamer drilling depth is inadequate and releasing force is inaccurate, the present invention is provided
A kind of deep-well reaming hole method and PDC waterpower reamers, so as to realize that reaming hole depth is consistent with drilling depth, improve drilling efficiency
And ensure the success rate of unblock.
Technical scheme：A kind of deep-well reaming hole method, installs two PDC waterpower reamers first on drill string,
Top PDC waterpower reamers are fitted without latch-up structure, during normal drilling well in the presence of mud pressure top PDC waterpower reaming holes
The cutter hub of device is opened and starts reaming hole, and bottom PDC waterpower reamers are provided with latch-up structure, now keep lock-out state, its knife
Body does not open in body；Stop drilling when drilling depth reaches 750~850 meters or rate of penetration is substantially slack-off, will bore
5 meters are carried on post, increase mud displacement is to more than 50L/S, and circulating mud 10 minutes now unlocks bottom PDC waterpower reamer,
Its cutter hub is opened, recovers 30L/S discharge capacities, drill string is transferred, reaming hole operation is proceeded using bottom PDC waterpower reamers；Bore
Stop suppressing after the completion of well, the cutter hub of upper and lower part PDC waterpower reamers can automatically retract body under the screen resilience of spring
Interior, above carrying drill string can take out reamer from sleeve pipe, complete reaming hole operation.
Further, the bottom PDC waterpower reamer controls cutter hub by the size of flow-limiting valve flow and the relation of discharge capacity
Releasing force.
Meanwhile, the present invention also provides a kind of PDC waterpower reamer, including body and the top connection for being connected to body two ends
And lower contact, the upper spindle and lower spindle linked together is provided with body, and upper spindle and lower spindle can exist simultaneously
Slided up and down in body, the upper end of upper spindle, which is provided with, to be cut off, and is moved in the stopper slot that the outer end cut off can be in inner body wall,
Spring is cased with the outer wall of lower spindle, the lower end of upper spindle is contacted with spring；It is uniform fenestrate in the reaming hole section of body
Mouthful, 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, is moved in the stopper slot that stop collar can be in inner body wall.
Due to using above-mentioned technical proposal, the advantage of the invention is that：
1st, two or more reamers are applied in combination the present invention, and segmented progressively opens each reamer,
The problem of single reamer can not meet reaming hole depth is solved, the reaming hole depth once gone into the well is substantially increased；
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 reamer of the present invention uses gear type
Involute structure, saves big quantity space, improves structural strength；In addition, traditional reamer cutter hub is easy in use
There is stuck situation, and cutter hub opening dimension it is difficult to ensure that, the involute structure transmitting thrust on cutter hub of the invention
Relatively reliable, opening dimension is more accurate；
3rd, the present invention controls the shear strength cut off by the way of flow-limiting valve controls flow, makes reamer releasing force more accurate
Really, use is more safe and reliable.Meanwhile, the present invention, need to be when different due to being used in combination using multiple reamers
Time is unlocked one by one, so must calculate accurate, if down-hole accident can all be caused by not unlocking or misreading lock, and discharge capacity exists
It is identical in whole drill string, therefore, the present invention controls reaming hole exactly by the uninterrupted of flow-limiting valve and the relation of discharge capacity
The releasing force of device cutter hub；
4th, the cylindrical upper tungsten carbide button of reamer, can prevent from causing after damaging due to cylindrical and wall friction cutter hub without
The situation that method is stretched out, is used while can work as stabilizer when cutter hub does not open；
In summary, the present invention, which solves single reamer, can not realize drilling depth asking more than 1500 meters of once going into the well
Topic, and using the reaming hole mode for first using bottom reamer reaming hole again with top reamer reaming hole so that during whole reaming hole
Only need to be to reamer unblock once, it is to avoid the problem of first need to repeatedly being unlocked with top reamer again with bottom reamer, secondly
Using discharge capacity unlocking structure, because discharge capacity is consistent all the time in whole drill string and well, and each position in drill string is pumped
It is all different, because there are many instruments to produce pressure drop, when pump pressure is delivered on reamer and it is not equal on pressure gauge and shows
The value shown, the problem of pump pressure unblock is inaccurate is avoided using discharge capacity unlocking structure.The present invention can be used not only for trapping with brill
In plumber's skill, it can be also used for various needing the drillng operation of reaming hole.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is Fig. 1 C enlarged drawings；
Fig. 3 is Fig. 1 E enlarged drawings；
Structural representation when top reamer is opened when Fig. 4 is implemented for the present invention；
Structural representation top reamer is opened with bottom reamer when Fig. 5 is implemented for the present invention simultaneously when.
Description of reference numerals：1- top connections, 2- upper spindles, 3- is cut off, 4- bodies, 5- limited blocks, 6- cutter hubs, and 7- hard is closed
Gold goal, 8- springs, 9- lower spindles, 10- flow-limiting valves, 11- lower contacts, 12- rotating shafts, 13- reaming holes section, 14- windows, 15- stopper slots,
16- stop collars, 17- teeth groove, 18- partial gears.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, with reference to the accompanying drawings and examples to this hair
It is bright to be described in further detail.
Embodiments of the invention：The structural representation of deep-well reaming hole method and PDC waterpower reamers as shown in Figures 1 to 3, is wrapped
Include body 4 and be connected to the top connection 1 and lower contact 11 at the two ends of body 4, setting one's heart of linking together is provided with body 4
Axle 2 and lower spindle 9, and upper spindle 2 and lower spindle 9 can be while slide up and down in body 4, the upper end of upper spindle 2 is provided with
Cut off 3,3 outer end of cutting off is connected with stop collar 16, and stop collar 16 can be moved in the stopper slot 15 on the inwall of body 4,
Spring 8, lower end and the Elastic Contact of spring 8 of upper spindle 2 are cased with the outer wall of lower spindle 9；In the reaming hole section 13 of body 4
Window 14 is furnished with, is provided with window 14 by rotating shaft 12 above cutter hub 6, and the oral area of window 14 and is provided with limited block 5, prevented
Turned 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, not exclusively
Gear 18 is made up of the profile geometry tooth of more than 2 quantity, is provided with and is coordinated with partial gear 18 on the outer wall of upper spindle 2
Teeth groove 17.The external diameter of the reaming hole section 13 is more than the two ends external diameter of body 4, and projection is evenly equipped with the outer wall of reaming hole section 13
Sintered carbide ball 7, the sintered carbide ball 7 inlayed on reaming hole section 13 is cylindrical can be prevented because reaming hole section 13 is cylindrical and the borehole wall rubs
The situation wiped and cause cutter hub 6 not stretch out after damage, is used while can work as stabilizer when cutter hub 6 does not open.The lower heart
The lower end oral area of axle 9 is provided with flow-limiting valve 10, because discharge capacity is identical in whole drill string, therefore passes through the big of flow-limiting valve 10
Small and discharge capacity relation controls the releasing force of reamer upper knife body 6 exactly.
The operation principle of the present invention：Referring to Fig. 4, two PDC waterpower reamers, top PDC water are installed first on drill string
Power reamer is fitted without latch-up structure, during normal drilling well in the presence of mud pressure top PDC waterpower reamers cutter hub
Open and start reaming hole, bottom PDC waterpower reamers are provided with latch-up structure, now keep lock-out state, and its cutter hub 6 is in body
Do not open inside；Referring to Fig. 5, stop drilling when drilling depth reaches 750~850 meters or rate of penetration is substantially slack-off, will bore
5 meters are carried on post, increase mud displacement is to more than 50L/S, and circulating mud 10 minutes now unlocks bottom PDC waterpower reamer,
Its cutter hub is opened, recovers 30L/S discharge capacities, drill string is transferred, reaming hole operation is proceeded using bottom PDC waterpower reamers；Bore
Stop suppressing after the completion of well, the cutter hub (6) of upper and lower part PDC waterpower reamers can automatically retract this under the screen resilience of spring
In vivo, above carrying drill string can take out reamer from sleeve pipe, complete reaming hole operation.
Claims (9)
1. a kind of deep-well reaming hole method, it is characterised in that：Two or more 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, its cutter hub exists
Do not opened in body；Stop drilling when drilling depth reaches 750~850 meters or rate of penetration is substantially slack-off, by drill string
5 meters are carried, increase mud displacement is to more than 50L/S, circulating mud 10 minutes, now bottom PDC waterpower reamer unblock, cutter hub
Open, recover the normal drilling well discharge capacities of 30L/S, transfer drill string, reaming hole operation is proceeded using bottom PDC waterpower reamers；Drilling well
After the completion of stop suppressing, the cutter hub of upper and lower part PDC waterpower reamers can be automatically retracted in body under the screen resilience of spring,
Above carrying drill string can take out reamer from sleeve pipe, complete reaming hole operation.
2. deep-well reaming hole method according to claim 1, it is characterised in that：The bottom PDC waterpower reamer passes through limit
The relation of the size and discharge capacity that flow valve flow controls the releasing force of cutter hub.
3. a kind of PDC waterpower reamer, including body (4) and the top connection (1) and lower contact that are connected to body (4) two ends
(11), it is characterised in that：The upper spindle (2) and lower spindle (9) linked 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).
4. PDC waterpower reamer according to claim 3, 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.
5. the PDC waterpower reamers according to claim 3 or 4, 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).
6. PDC waterpower reamer according to claim 3, 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).
7. PDC waterpower reamer according to claim 3, it is characterised in that：The lower end oral area of the lower spindle (9) is installed
Current limiting valve (10).
8. PDC waterpower reamer according to claim 3, it is characterised in that：It is provided with above window (14) oral area
Limited block (5).
9. PDC waterpower reamer according to claim 3, it is characterised in that：The outer end for cutting off (3) and stop collar
(16) connect, stop collar (16) can be moved in the stopper slot (15) on body (4) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710581611.3A CN107217991B (en) | 2017-07-17 | 2017-07-17 | Deep well reaming method and PDC hydraulic reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710581611.3A CN107217991B (en) | 2017-07-17 | 2017-07-17 | Deep well reaming method and PDC hydraulic reamer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107217991A true CN107217991A (en) | 2017-09-29 |
| CN107217991B CN107217991B (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710581611.3A Active CN107217991B (en) | 2017-07-17 | 2017-07-17 | Deep well reaming method and PDC hydraulic reamer |
Country Status (1)
| Country | Link |
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| CN (1) | CN107217991B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
| CN112627737A (en) * | 2020-11-30 | 2021-04-09 | 安东通奥科技产业股份有限公司 | Reaming tool |
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| CN112627737A (en) * | 2020-11-30 | 2021-04-09 | 安东通奥科技产业股份有限公司 | Reaming tool |
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| Publication number | Publication date |
|---|---|
| CN107217991B (en) | 2023-08-11 |
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