CN106761387A - A kind of drill string for exciting multidimensional to impact connection pipe nipple - Google Patents
A kind of drill string for exciting multidimensional to impact connection pipe nipple Download PDFInfo
- Publication number
- CN106761387A CN106761387A CN201611232660.8A CN201611232660A CN106761387A CN 106761387 A CN106761387 A CN 106761387A CN 201611232660 A CN201611232660 A CN 201611232660A CN 106761387 A CN106761387 A CN 106761387A
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- CN
- China
- Prior art keywords
- impact bar
- bar
- impact
- arresting disk
- trapezoidal key
- 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
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- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
Abstract
The invention belongs to oil and gas well drilling equipment technical field, it is related to a kind of drill string for exciting multidimensional to impact connection pipe nipple, upper impact bar to be connected with the upper drilling string of outside；The trapezoidal key of impact bar is provided with the outer wall of upper impact bar, sealing ring is arranged between impact bar and lower impact bar；The lower end of upper impact bar is disposed with lower impact bar, position-arresting disk and lower contact from top to bottom, lower impact rod set is located on impact bar, upper impact bar penetrates lower impact bar inside and is connected with the position-arresting disk being placed in inside lower impact bar, the upper end of lower impact bar is provided with the trapezoidal key of lower impact bar being meshed with the trapezoidal key of upper impact bar, the lower surface middle setting of position-arresting disk has six side's grooves, and lower contact lower end is provided with lower contact lower end screw thread；Its simple structure, it is easy to use, it is safe and reliable, substantially without extra pressure consumption, do not influence drilling tool structure, it is adaptable to various drilling platforms, fabricate and working service low cost.
Description
Technical field：
The invention belongs to oil and gas well drilling equipment technical field, it is related to a kind of drill string for exciting multidimensional to impact connection short
Section, particularly a kind of deep well hard formation improves the drilling tool of rate of penetration.
Background technology：
During oil-gas exploration and development, with the increase of well depth, stratum becomes hard, and anisotropism becomes strong, drillability
It is deteriorated, causes rate of penetration to reduce, extend drilling period, increased the input of fund.It is power auger in solution drilling process
The low problem of speed, oil drilling worker proposes and has developed Vertical-drilling Technology, hydraulic thruster, hydroscillator, underground
Power drilling tool, efficient PDC drill bit and novel composite drill, shunting negative pressure drill bit, hydraulic pulse drilling tool and self-excitation cavitation are penetrated
Various speed-raising technologies and the drilling tools such as stream drilling tool, rotary impact tool, torsion impact device.In above-mentioned all kinds of technologies except
Outside new drill, remaining is to drive downhole tool using drilling well liquid energy to realize the raising of efficiency of breaking rock, but also volume simultaneously
Outer consumes drilling well liquid energy (such as helicoid hydraulic motor increases pressure drop more than 5~8Mpa), increased ground pump load and safety
Accident odds, especially with the increase of well depth, bottom hydraulic energy drastically declines, any consumption drilling well liquid energy
Factor all can undoubtedly be adversely affected to rate of penetration.Therefore, the new energy source of downhole tool is sought to improving deep-well machine
Tool drilling speed is most important.
Research shows that drill string rotates at a high speed in drilling process, between contact of the drill bit with shaft bottom and drill string and the borehole wall
Frictional impact can cause drill string it is violent longitudinally, laterally and twisting vibration, cause the fatigue rupture of drill string, it is therefore seen that, drill string
Vibration includes huge energy, but due to not carrying out effective utilization to the energy, it is generated drilling process
Detrimental effect.In addition, substantial amounts of field test shows, for deep firm hard formation, rotating drilling and torsional pulse drilling well take
More preferable speed-increasing effect was obtained, its main cause is, with the increase of well depth, formation compaction degree is higher, become harder,
Bottom hydraulic energy dropoff, sensitivity reduction of the rate of penetration to rotating speed and hydraulic energy simultaneously, and rotating drilling can be produced
Life acts on the high frequency axial impact of bottom rock, can not only make bottom rock generation initial crack and extension forms volume and breaks
Broken raising efficiency of breaking rock, while the periodic wedging stratum of drill bit can be made, so as to improve the catalase of drill bit every revolution
Amount；On the other hand, torsional pulse instrument can act the torsional pulse vibration in bottom rock, by PDC drill bit to shaft bottom
The shearing-crushing of rock is changed into impact shear and crushes, and supplements the deficiency of drill bit broken rock moment of torsion, eliminates the stick-slip effect of drill bit, improves
Rate of penetration and PDC drill bit service life.If it is possible to drillstring vibrations energy utilization is risen be used as energy source, lure
Hair drill bit vibrates to the axial direction of bottom rock and torsional pulse, so that the rate of penetration of deep well hard formation is improved, to improving China
Petrol resources exploitation efficiency and the ability of reply world oil probing market keen competition are significant.
The content of the invention：
Exist it is an object of the invention to solve the problems, such as that deep drilling rate of penetration is low, overcome the shortcomings of prior art,
A kind of drill string for exciting multidimensional to impact connection pipe nipple of offer, periodic longitudinal and twisting vibration of the pipe nipple by using drill string,
Drill bit is produced axial direction and torsional pulse to bottom rock simultaneously, improve efficiency of breaking rock, bit life, eliminate bit balling,
So as to improve rate of penetration, drilling well fund input is reduced.
To achieve these goals, agent structure of the invention include upper impact bar, lower impact bar, sealing ring, position-arresting disk,
Lower contact, the trapezoidal key of upper impact bar, the trapezoidal key of lower impact bar, six side's grooves and lower contact lower end screw thread；Upper impact bar, lower impact
The inside of bar and position-arresting disk is equipped with the center flow channels for extending simultaneously insertion in the axial direction, and the upper and lower ends of upper impact bar are equipped with
Screw thread, upper impact bar is connected by the screw thread of upper impact bar upper end with the upper drilling string of outside；Set on the outer wall of upper impact bar
There is the trapezoidal key of upper impact bar, the lower end of the upper trapezoidal key of impact bar is provided with the seal groove for placing sealing ring, and sealing ring is set
Between upper impact bar and lower impact bar；The lower end of upper impact bar be disposed with from top to bottom lower impact bar, position-arresting disk and under
Joint, lower impact rod set is located on impact bar, upper impact bar penetrate lower impact bar inside and be placed in inside lower impact bar
Position-arresting disk is threadedly coupled, upper impact bar and lower impact bar coordinating with being combined into the face of cylinder in addition to trapezoidal key；Lower impact bar it is upper
End is provided with the trapezoidal key of lower impact bar being meshed with the trapezoidal key of upper impact bar, the upper trapezoidal key of impact bar and the lower trapezoidal key of impact bar
By the contact of incline plane of trapezoidal key and transmit power and moment of torsion；The inside of lower impact bar is provided with the spacing end face of lower impact bar, and lower end sets
There is screw thread；The upper end of position-arresting disk is provided with the spacing end face of position-arresting disk, and the lower spacing end face of impact bar and the spacing end face of position-arresting disk are used together
In preventing position-arresting disk and upper impact bar from deviating from from lower impact bar, make that between impact bar and lower impact bar axial shifting can only be produced
Dynamic displacement and corner；The lower surface middle setting of position-arresting disk has six side's grooves, for by external tool by upper impact bar lower end
Screw thread and the threaded upper ends of position-arresting disk tighten；The upper end of lower contact is provided with screw thread, and lower contact is by lower impact bar lower end
The screw thread of screw thread and lower contact upper end is connected with lower impact bar, and lower contact lower end is provided with lower contact lower end screw thread, for connecting
Outside lower drilling tool and drill bit.
During present invention work, upper impact bar (vertical view) uniform rotation clockwise under the drive of upper drilling string, by setting
The upper trapezoidal key of impact bar is engaged with the lower trapezoidal key of impact bar, so as to drive lower impact bar, (vertical view) is rotated clockwise；Lower impact
Bar drives lower contact to rotate by lower impact bar lower end screw thread, and the coupled lower drilling string of lower contact drive or drill bit are clockwise
(vertical view) is rotated, and contact of the drill bit with shaft bottom and the frictional impact between drill string and the borehole wall induce and bore in lower drilling string rotation process
Post produces extensional vibration and twisting vibration：When method of longitudinal vibration of drilling string, upper impact bar is produced and shaken relative to the longitudinal direction of upper impact bar
It is dynamic, due to being trapezoidal key contacts between upper impact bar and lower impact bar, so that inducing lower impact bar produces advanced its rotation direction
On corner, so as to induce produce longitudinal direction and torsional pulse to act on simultaneously bottom rock with its indirectly/drill bit for being joined directly together
(i.e. three-dimensional impact)；When Drillstring Torsional Vibration (clockwise, overlooking), upper impact bar is produced and shaken relative to upper impact torsion of bar
It is dynamic, due to being trapezoidal key contacts between upper impact bar and lower impact bar, so that inducing lower impact bar produces extensional vibration, then lure
Hair is produced and reversed and impact of collision effect simultaneously with its indirectly/drill bit for being joined directly together to bottom rock, realizes that multidimensional is impacted.
The present invention compared with prior art, with advantages below：One be using the longitudinal direction produced during drill string rotating and
Twisting vibration does not consume drilling well liquid energy as power resources, while there is damping effect, to improving machinery using drillstring vibrations
Drilling speed and raising drill string fatigue life-span have double advantage；Two is to induce drill bit to shaft bottom rock by absorbing the twisting vibration of drill string
The axial impact of stone, increases the depth on Cutter wedging stratum on the premise of the pressure of the drill is not increased, meanwhile, bored by absorbing
The extensional vibration of post induces torsional pulse of the drill bit to bottom rock, and the deficiency of the broken rock moment of torsion that supplement rotating disk is provided increases
The catalase amount of drill bit every revolution, inclining prevention eliminates stick slip vibration and bit balling, improves drilling life of bit；Three
It is that frequency of impact is the several times of drill string rotating speed, the frequency of frequency of impact and drill teeth cutting shaft bottom same point is pulled open, the skill
Art can be used cooperatively with helicoid hydraulic motor, and to drill bit without particular/special requirement, can further be carried on the basis of combined drilling speed-raising
Rate of penetration high and drilling efficiency；Four is that pipe nipple structure is very simple, and no-movable part is protected its safety and stability
Barrier, conventional drilling technique is not changed, is conducive to the popularization and application of the technology；Its simple structure, easy to use, safe and reliable, base
Additionally pressure consumes this nothing, does not influence drilling tool structure, it is adaptable to various drilling platforms, fabricates and working service low cost, for
Deep-well, the safely and fast drilling of ultradeep well have important practical significance.
Brief description of the drawings：
Fig. 1 is agent structure sectional structure principle schematic of the invention.
Fig. 2 is agent structure A-A profiles of the invention.
Fig. 3 is agent structure B-B profiles of the invention.
Specific embodiment：
Below by embodiment and with reference to accompanying drawing, the invention will be further described.
Embodiment：
The agent structure of the present embodiment include upper impact bar 1, lower impact bar 2, sealing ring 3, position-arresting disk 4, lower contact 5, on
The trapezoidal key 12 of impact bar, the trapezoidal key 21 of lower impact bar, six side's grooves 41 and lower contact lower end screw thread 51；Upper impact bar 1, lower impact
The inside of bar 2 and position-arresting disk 4 is equipped with the center flow channels for extending simultaneously insertion in the axial direction, and the upper and lower ends of upper impact bar 1 are equal
Screw thread is provided with, upper impact bar 1 is connected upper drilling string by the screw thread of upper impact bar upper end with the upper drilling string of outside；Upper impact bar
The trapezoidal key 12 of impact bar is provided with 1 outer wall, the lower end of the upper trapezoidal key 12 of impact bar is provided with for placing sealing ring 3
Seal groove, sealing ring 3 is arranged between impact bar 1 and lower impact bar 2；The lower end of upper impact bar 1 sets gradually from top to bottom
There are lower impact bar 2, position-arresting disk 4 and lower contact 5, lower impact bar 2 is set on impact bar 1, and upper impact bar 1 penetrates lower impact bar
2 inside are simultaneously threadedly coupled with the position-arresting disk 4 being placed in inside lower impact bar 2, and upper impact bar 1 and lower impact bar 2 are in addition to trapezoidal key
Be combined into the face of cylinder coordinate；The upper end of lower impact bar 2 is provided with the lower impact bar ladder being meshed with the trapezoidal key 12 of upper impact bar
Shape key 21, the upper trapezoidal key 12 of impact bar and the trapezoidal key 21 of lower impact bar are by the contact of incline plane of trapezoidal key and transmit power and moment of torsion；
The inside of lower impact bar 2 is provided with the spacing end face of lower impact bar, and lower end is provided with screw thread；It is spacing that the upper end of position-arresting disk 4 is provided with position-arresting disk
End face, the lower spacing end face of impact bar and the spacing end face of position-arresting disk are used to prevent position-arresting disk 4 and upper impact bar 1 from lower impact bar together
Deviate from 2, make can only to be produced between impact bar 1 and lower impact bar 2 corner of small size axial movement displacement components u and certain angle
θ；The lower surface middle setting of position-arresting disk 4 has six side's grooves 41, for by external tool by the screw thread of upper impact bar lower end and
The threaded upper ends of position-arresting disk 4 are tightened；The upper end of lower contact 5 is provided with screw thread, lower contact 5 by the screw thread of lower impact bar lower end and
The screw thread of lower contact upper end is connected with lower impact bar 2, and the lower end of lower contact 5 is provided with lower contact lower end screw thread 51, outer for connecting
The lower drilling tool and drill bit in portion.
When the present embodiment works, (vertical view) uniform rotation clockwise under the drive of upper drilling string of upper impact bar 1, by setting
Put the trapezoidal key 12 of impact bar to be engaged with the trapezoidal key 21 of lower impact bar, so as to drive lower impact bar 2, (vertical view) is rotated clockwise；
Lower impact bar 2 drives lower contact 5 to rotate by lower impact bar lower end screw thread, lower contact 5 drive coupled lower drilling string or
(vertical view) is rotated drill bit clockwise, contact of the drill bit with shaft bottom and the friction between drill string and the borehole wall in lower drilling string rotation process
Collision induces drill string and produces extensional vibration and twisting vibration：When method of longitudinal vibration of drilling string, upper impact bar 2 is produced relative to upper impact
The extensional vibration of bar 1, due to being trapezoidal key contacts between upper impact bar 1 and lower impact bar 2, so as to induce lower impact bar 2 produce
Corner in advanced its rotation direction, so as to induce with its indirectly/drill bit for being joined directly together to bottom rock while producing longitudinal direction
With torsional pulse effect (i.e. three-dimensional impact)；When Drillstring Torsional Vibration (clockwise, overlook), upper impact bar 2 produce relative to
The twisting vibration of upper impact bar 1, due to being trapezoidal key contacts between upper impact bar 1 and lower impact bar 2, so as to induce lower impact bar
2 produce extensional vibrations, then induce to produce bottom rock simultaneously with its indirectly/drill bit for being joined directly together and reverse and impact of collision
Effect, realizes that multidimensional is impacted.
The present embodiment is proposed for deep well hard formation efficiency of breaking rock is low, rate of penetration is low and the big problem high of fund input
Drill bit is excited to impact the multidimensional of bottom rock using trapezoidal key engaging structure, so that improve efficiency of breaking rock, eliminate bit balling,
So as to improve the thinking of rate of penetration, it is with a wide range of applications, the drill string connection pipe nipple for being used has simple structure, makes
With it is convenient, safe and reliable, pressure consumption it is low, do not influence drilling tool structure, suitable for various drilling platforms, processing and manufacturing and working service
The features such as cost is relatively low, has important practical significance for the safely and fast drilling of deep-well, ultradeep well.
Claims (2)
1. it is a kind of excite multidimensional impact drill string connection pipe nipple, it is characterised in that agent structure include upper impact bar, lower impact bar,
Sealing ring, position-arresting disk, lower contact, the trapezoidal key of upper impact bar, the trapezoidal key of lower impact bar, six side's grooves and lower contact lower end screw thread；
The inside of upper impact bar, lower impact bar and position-arresting disk is equipped with the center flow channels for extending simultaneously insertion in the axial direction, upper impact bar
Upper and lower ends be equipped with screw thread, upper impact bar is connected by the screw thread of upper impact bar upper end with the upper drilling string of outside；Upper punching
Hit on the outer wall of bar and be provided with the trapezoidal key of impact bar, the lower end of the upper trapezoidal key of impact bar is provided with for placing the close of sealing ring
Sealing groove, sealing ring is arranged between impact bar and lower impact bar；The lower end of upper impact bar is disposed with undershoot from top to bottom
Hit bar, position-arresting disk and lower contact, lower impact rod set is located on impact bar, upper impact bar penetrate lower impact bar inside and be placed in
Position-arresting disk threaded connection inside lower impact bar, upper impact bar and lower impact bar matching somebody with somebody with being combined into the face of cylinder in addition to trapezoidal key
Close；The upper end of lower impact bar is provided with the trapezoidal key of lower impact bar being meshed with the trapezoidal key of upper impact bar, the upper trapezoidal key of impact bar
With the contact of incline plane of the lower excessively trapezoidal key of the trapezoidal push-to of impact bar and transmit power and moment of torsion；The inside of lower impact bar is provided with lower impact bar
Spacing end face, lower end is provided with screw thread；The upper end of position-arresting disk is provided with the spacing end face of position-arresting disk, the lower spacing end face of impact bar and position-arresting disk
Spacing end face is used to prevent position-arresting disk and upper impact bar from deviating from from lower impact bar together；The lower surface middle setting of position-arresting disk has
Six side's grooves, for being tightened the threaded upper ends of the screw thread of upper impact bar lower end and position-arresting disk by external tool；Lower contact
Upper end is provided with screw thread, and lower contact is connected by the screw thread of lower impact bar lower end and the screw thread of lower contact upper end with lower impact bar,
Lower contact lower end is provided with lower contact lower end screw thread, lower drilling tool and drill bit for connecting outside.
2. the drill string connection pipe nipple that multidimensional is impacted is excited according to claim 1, it is characterised in that during work, upper impact bar exists
Uniform rotation clockwise under the drive of upper drilling string, is engaged by setting the upper trapezoidal key of impact bar with the lower trapezoidal key of impact bar,
So as to drive lower impact bar to rotate clockwise；Lower impact bar drives lower contact to rotate by lower impact bar lower end screw thread, lower contact
The coupled lower drilling string of drive or drill bit are rotated clockwise, contact of the drill bit with shaft bottom and brill in lower drilling string rotation process
Frictional impact between post and the borehole wall induces drill string and produces extensional vibration and twisting vibration：When method of longitudinal vibration of drilling string, upper impact
Bar produces the extensional vibration relative to upper impact bar, due to being trapezoidal key contacts between upper impact bar and lower impact bar, so as to lure
Give impact bar and produce corner in advanced its rotation direction, so as to induce with its indirectly/drill bit for being joined directly together to shaft bottom rock
Stone produces longitudinal direction and torsional pulse effect simultaneously；When Drillstring Torsional Vibration, upper impact bar produces the torsion relative to upper impact bar
Rotational oscillation is moved, due to being trapezoidal key contacts between upper impact bar and lower impact bar, so that inducing lower impact bar produces extensional vibration, after
And to induce produce bottom rock simultaneously with its indirectly/drill bit for being joined directly together and reverse and impact of collision effect, realize that multidimensional is rushed
Hit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611232660.8A CN106761387B (en) | 2016-12-28 | 2016-12-28 | A kind of drill string connection pipe nipple of excitation multidimensional impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611232660.8A CN106761387B (en) | 2016-12-28 | 2016-12-28 | A kind of drill string connection pipe nipple of excitation multidimensional impact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761387A true CN106761387A (en) | 2017-05-31 |
| CN106761387B CN106761387B (en) | 2018-09-25 |
Family
ID=58922653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611232660.8A Expired - Fee Related CN106761387B (en) | 2016-12-28 | 2016-12-28 | A kind of drill string connection pipe nipple of excitation multidimensional impact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761387B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275384A (en) * | 2014-06-26 | 2016-01-27 | 中国石油化工股份有限公司 | A percussion drilling device |
| CN106121513A (en) * | 2016-07-05 | 2016-11-16 | 西南石油大学 | A kind of composite impact drilling tool |
-
2016
- 2016-12-28 CN CN201611232660.8A patent/CN106761387B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275384A (en) * | 2014-06-26 | 2016-01-27 | 中国石油化工股份有限公司 | A percussion drilling device |
| CN106121513A (en) * | 2016-07-05 | 2016-11-16 | 西南石油大学 | A kind of composite impact drilling tool |
Non-Patent Citations (1)
| Title |
|---|
| 雷鹏等: "自激振荡式旋冲工具在深井超深井中的试验应用", 《石油钻探技术》 * |
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| Publication number | Publication date |
|---|---|
| CN106761387B (en) | 2018-09-25 |
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Granted publication date: 20180925 Termination date: 20181228 |
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