CN201661250U - Drill collar capable of relieving stick-slip phenomenon - Google Patents
Drill collar capable of relieving stick-slip phenomenon Download PDFInfo
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- CN201661250U CN201661250U CN2010201297455U CN201020129745U CN201661250U CN 201661250 U CN201661250 U CN 201661250U CN 2010201297455 U CN2010201297455 U CN 2010201297455U CN 201020129745 U CN201020129745 U CN 201020129745U CN 201661250 U CN201661250 U CN 201661250U
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- drill collar
- pipe
- drill
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Abstract
The utility model relates to a drill collar capable of relieving a stick-slip phenomenon, which is connected with the lower part of a drill column in well drilling. The drill collar can effectively relieve the damage of the stick-slip phenomenon to a drill and the drill column. The utility model has the technical scheme that the outer layer of the drill collar is provided with a drill collar outer pipe, and the inner layer of the drill collar is provided with a drill collar inner pipe; the radial direction of the lower end of the drill collar outer pipe is symmetrically provided with outer pipe end surface stop blocks; the radial direction of the lower end of the drill collar inner pipe is symmetrically provided with inner pipe end surface stop blocks; the upper end surface of the drill collar inner pipe is provided with a thrust bearing; the inner cylindrical surface of the drill collar outer pipe is provided with symmetrical outer pipe cylindrical surface stop blocks; and the outer cylindrical surface of the drill collar inner pipe is provided with symmetrical inner pipe cylindrical surface stop blocks; a sealing device is arranged between the drill collar outer pipe and the drill collar inner pipe of the drill collar; the radial direction on the inner cylindrical surface of the drill collar outer pipe is symmetrically provided with two radially symmetrical circular arc slots; and the outer pipe cylndrical surface stop blocks are arranged between the circular arc slots. The drill collar relieves the stick-slip phenomenon and dynamic load overload, prolongs the service lives of the drill and the drill column and is used for petroleum and natural gas and geology well drilling projects.
Description
Technical field
The utility model relates to a kind of drill collar that can alleviate stick-slip phenomenon that oil and gas well drilling and geological prospecting drilling well connect in the drill string bottom that is used for, and belongs to drilling tool.
Background technology
Drill collar is in the bottom of drill string, is the chief component of bottomhole assembly.Its main feature is wall thickness big (is generally 38 to 53 millimeters, is equivalent to 4 to 6 times of drill pipe thickness), has bigger gravity and rigidity, and it mainly plays following several respects in drilling process: 1, apply the pressure of the drill to drill bit; 2, the necessary intensity under the assurance contractive condition; 3, alleviate drill bit vibrations, swing and beat etc., make the drill bit stable working; 4, control hole deviation.
Drill collar has many different shapes, as circle, the side, triangle and spiral.Two kinds of the most frequently used is circular (level and smooth) drill collar and spirality drill collars.
In drilling process, the drilling rod driving force is approximately equal to the average amplitude of drill bit resistance, and resistance is unstable to be changed, when drill bit and bottom rock resistance greater than the drilling rod driving force, drill bit and rod rotation speed significantly reduce, and when drilling rod driving energy accumulation was arrived to a certain degree, the drilling rod driving force was greater than resistance, the drilling speed of drill bit and drilling rod will sharply increase, and the anticlimax significantly of this drill bit and rod rotation speed is called stick-slip phenomenon with uprushing.
Stick-slip phenomenon can influence the life-span of drill bit significantly, causes that easily drill bit lost efficacy in advance and drill string reverses overload.At present, alleviate the important topic that stick-slip phenomenon is drill collar research.
Summary of the invention
The purpose of this utility model is: to occur stick-slip phenomenon in the drilling process in order overcoming, thereby to influence the life-span of drill bit, cause that drill bit lost efficacy in advance and drill string reverses overload, the spy provides a kind of drill collar that can alleviate stick-slip phenomenon.
In order to achieve the above object, the technical scheme that the utility model solves this technical problem is: a kind of drill collar that can alleviate stick-slip phenomenon, be made up of pipe in drill collar outer tube, the drill collar, its architectural feature is: the drill collar skin is the drill collar outer tube, and the drill collar internal layer is a pipe in the drill collar; In the spacing scheme of end face, in the lower end of drill collar outer tube radial symmetric 2 outer tube end face limited blocks are set, the lower end radial symmetric of pipe is provided with 2 inner tube face limited blocks in drill collar, and the upper surface of pipe is provided with thrust bearing in the drill collar; In the spacing scheme in the face of cylinder, 2 symmetrical outer tube face of cylinder limited blocks are set on the inner cylinder face of drill collar outer tube, pipe face of cylinder limited block in 2 symmetries is set on the external cylindrical surface of pipe in drill collar.Pipe, outer tube can relatively rotate in the angular range of limited block restriction in the drill collar.In drill collar two ends drill collar outer tube and drill collar, be provided with sealing device between the pipe, prevent that mud boulder from entering.The material proportion of drill collar outer tube is greater than the material proportion of pipe in the drill collar.Radial symmetric has the arc groove of two radial symmetric on the inner cylinder face of drill collar outer tube, is two outer tube face of cylinder limited blocks between two arc grooves.
In drilling process, the drill collar outer tube is with drilling rod, manage high speed rotating together in the drill collar, when drill bit and bottom rock resistance greater than the drilling rod driving force, pipe speed reduces suddenly in drilling rod and the drill collar, the drill collar outer tube is because inertia still keeps high speed rotating, limited block on the drill collar outer tube is because the limited block on the interior pipe of inertia impact, thereby the part kinetic energy of drill collar outer tube passes to pipe in the drill collar, outer tube speed reduces, the speed of interior pipe and drilling rod is gone up, in the rise process under motor-driven in drilling rod and the drill collar speed of pipe can significantly increase, pipe limited block in the outer tube limited block will impact in the other direction, the part kinetic energy of interior pipe passes to outer tube, and pipe and the increase of drilling rod speed are slowed down in making, and have alleviated the damage to drill bit and drill string of stick-slip phenomenon.
The utility model has following beneficial effect compared with the prior art: the energy transmission of pipe has alleviated stick-slip phenomenon and dynamic loading overload in (1) drill collar outer tube and the drill collar, has increased the life-span of drill bit and drill string; (2) the material proportion of drill collar outer tube can not only provide bigger impact force greater than the material proportion of interior pipe, and can increase the pressure of the drill when the drill collar given volume, better reaches the demand of drilling well.
Description of drawings
Fig. 1 can alleviate the structural representation of the drill collar of stick-slip phenomenon for the utility model.
Fig. 2 is the A-A sectional view of the spacing Fig. 1 of the utility model drill collar end face.
Fig. 3 is the spacing structural representation in the utility model drill collar face of cylinder.
Fig. 4 is the B-B sectional view of the utility model drill collar spacing Fig. 3 in the face of cylinder.
Among the figure: 1, pipe 3, inner tube face limited block 4, outer tube end face limited block 5, thrust bearing 6, outer tube face of cylinder limited block 7, interior pipe face of cylinder limited block 8, arc groove 9, sealing device in drill collar outer tube 2, the drill collar.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments.
According to Fig. 1, shown in Figure 2, a kind of drill collar that can alleviate stick-slip phenomenon, include pipe 2 in drill collar outer tube 1, the drill collar, be provided with two outer tube end face limited blocks 4 in the lower end of drill collar outer tube 1 radial symmetric, the external diameter of the lower end of pipe 2 is uprushed in the drill collar, equate with outer external diameter of pipe, and radial symmetric is provided with two inner tube face limited blocks 3, and the upper surface of pipe 2 is provided with thrust bearing 5 in the drill collar.The characteristics of this programme are: it is two-layer that drill collar is divided in drill collar outer tube 1 and the drill collar pipe 2, and pipe 2 can relatively rotate in the angular range of end face limited block restriction in drill collar outer tube 1 and the drill collar.In the drilling process, drill collar outer tube 1 is with pipe 2 high speed rotating in the drill collar, when drill bit and bottom rock resistance greater than the drilling rod driving force, the rotating speed of pipe 2 reduces suddenly in the drill collar, when stick-slip phenomenon occurring, drill collar outer tube 1 is because inertia still keeps high speed rotating, the outer tube rotating speed is greater than interior pipe rotating speed, outer tube end face limited block on the drill collar outer tube 1 is because the inner tube face limited block on the interior pipe 2 of inertia impact drill collar, part kinetic energy passed to manage 2 in the drill collar, thereby the speed of pipe 2 in the drill collar is gone up, in the rise process under motor-driven in drilling rod and the drill collar speed of pipe 2 can significantly increase, outer tube end face limited block 4 will impact inner tube face limited block 3 in the other direction, and interior pipe 2 of drill collar and the increase of drilling rod speed are slowed down.Thrust bearing 5 can carry drill collar outer tube 1 and reduce friction.Be provided with sealing device 9 between the pipe 2 in drill collar two ends drill collar outer tube 1 and the drill collar, can prevent that mud boulder from entering.The material proportion of drill collar outer tube 1 is greater than the material proportion of interior pipe.
According to Fig. 3, shown in Figure 4, a kind of drill collar that can alleviate stick-slip phenomenon, include pipe 2 in drill collar outer tube 1, the drill collar, radial symmetric is provided with pipe face of cylinder limited block 7 in two on pipe 1 external cylindrical surface in drill collar, radial symmetric has the arc groove 8 of two radial symmetric on drill collar outer tube 1 inner cylinder face, be two outer tube face of cylinder limited blocks 6 between two arc grooves 8, the upper surface of pipe is provided with thrust bearing 5 in the drill collar.The characteristics of this programme are: it is two-layer that drill collar is divided in drill collar outer tube 1 and the drill collar pipe 2, and interior pipe face of cylinder limited block 7 can rotate in the arc groove 8 of drill collar outer tube 1 with pipe in the drill collar.In the drilling process, the interior pipe 2 of drill collar outer tube 1 drill collar is high speed rotating together, when drill bit and bottom rock resistance greater than the drilling rod driving force, the rotating speed of pipe 2 reduces suddenly in the drill collar, when stick-slip phenomenon occurring, drill collar outer tube 1 is because inertia still keeps high speed rotating, the outer tube rotating speed is greater than interior pipe rotating speed, outer tube face of cylinder limited block 6 is because the interior pipe face of cylinder limited block 7 of inertia impact, thereby the speed of pipe 2 in the drill collar is gone up, in the rise process under motor-driven in drilling rod and the drill collar speed of pipe 2 can significantly increase, interior pipe face of cylinder limited block 7 will impact outer tube face of cylinder limited block 6, make manage in the drill collar 2 and the increase of drilling rod speed slow down.Thrust bearing can carry drill collar outer tube 1 and reduce friction.Be provided with sealing device 9 between the pipe 2 in drill collar two ends drill collar outer tube 1 and the drill collar, can prevent that mud boulder from entering.The material proportion of drill collar outer tube 1 is greater than the material proportion of interior pipe.
The actual Shi Buxu that puts into production of the utility model changes the original volume and the syndeton of drill string, has bigger engineering using value.
Claims (3)
1. the drill collar that can alleviate stick-slip phenomenon is made up of pipe in drill collar outer tube, the drill collar, and it is characterized in that: the drill collar skin is drill collar outer tube (1), and the drill collar internal layer is a pipe (2) in the drill collar; Lower end radial symmetric at drill collar outer tube (1) is provided with 2 outer tube end face limited blocks (4), and the lower end radial symmetric of pipe (2) is provided with 2 inner tube face limited blocks (3) in drill collar, and the upper surface of pipe (2) is provided with thrust bearing (5) in drill collar; 2 symmetrical outer tube face of cylinder limited blocks (6) are set on the inner cylinder face of drill collar outer tube (1), pipe face of cylinder limited block (7) in 2 symmetries is set on the external cylindrical surface of pipe (2) in drill collar.
2. drill collar according to claim 1 is characterized in that: be provided with sealing device (9) between the pipe (2) in drill collar two ends drill collar outer tubes (1) and drill collar.
3. drill collar according to claim 1 is characterized in that: radial symmetric has the arc groove (8) of two radial symmetric on the inner cylinder face of drill collar outer tube (1), is two outer tube face of cylinder limited blocks (6) between two arc grooves (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201297455U CN201661250U (en) | 2010-03-05 | 2010-03-05 | Drill collar capable of relieving stick-slip phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201297455U CN201661250U (en) | 2010-03-05 | 2010-03-05 | Drill collar capable of relieving stick-slip phenomenon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661250U true CN201661250U (en) | 2010-12-01 |
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ID=43231665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201297455U Expired - Fee Related CN201661250U (en) | 2010-03-05 | 2010-03-05 | Drill collar capable of relieving stick-slip phenomenon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892813A (en) * | 2010-03-05 | 2010-11-24 | 西南石油大学 | Drill collar capable of reducing stick slip phenomena |
| CN102828698A (en) * | 2012-08-31 | 2012-12-19 | 山西环界石油钻具制造有限公司 | Three-slot drill column special for driving vehicle-mounted drilling machine |
-
2010
- 2010-03-05 CN CN2010201297455U patent/CN201661250U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892813A (en) * | 2010-03-05 | 2010-11-24 | 西南石油大学 | Drill collar capable of reducing stick slip phenomena |
| CN101892813B (en) * | 2010-03-05 | 2012-08-15 | 西南石油大学 | Drill collar capable of reducing stick slip phenomena |
| CN102828698A (en) * | 2012-08-31 | 2012-12-19 | 山西环界石油钻具制造有限公司 | Three-slot drill column special for driving vehicle-mounted drilling machine |
| CN102828698B (en) * | 2012-08-31 | 2015-09-23 | 山西环界石油钻具制造股份有限公司 | Be exclusively used in the three traverse drill posts that truck-mounted drilling rig drives |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130305 |