CN202990896U - Vibration-while-drilling drill rod - Google Patents
Vibration-while-drilling drill rod Download PDFInfo
- Publication number
- CN202990896U CN202990896U CN 201220748690 CN201220748690U CN202990896U CN 202990896 U CN202990896 U CN 202990896U CN 201220748690 CN201220748690 CN 201220748690 CN 201220748690 U CN201220748690 U CN 201220748690U CN 202990896 U CN202990896 U CN 202990896U
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- central tube
- drilling rod
- cylinder body
- vibration
- middle cylinder
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Abstract
The utility model discloses a vibration-while-drilling drill rod. The vibration-while-drilling drill rod comprises a central pipe assembly and an outer cylinder assembly, wherein the upper portion of a central pipe forms an upper joint, a first step structure, a second step structure, a third step structure and a fourth step structure of which overall dimensions are reduced gradually are formed downwards from the upper joint, the outer cylinder assembly is sleeved outside the central pipe assembly, an upper cylinder body is sleeved outside the first step structure and the second step structure, a tensioning body is arranged on the inner side of a middle cylinder body and is sleeved at the position of the third step structure through a thread, the length of the tensioning body is identical to that of the position, a boss is formed at a position on the inner side of the middle cylinder body, which is close to the middle portion, a pit is formed at the corresponding position of the tensioning body, the length of the pit is longer than that of the boss, a disc spring group is arranged between the inner side of the lower portion of the middle cylinder body and the fourth step structure, a piston is arranged at the lower end of the central pipe, the upper end of the piston is in threaded connection with the lower end of the central pipe, and the disc spring group is positioned by the lower end of the tensioning body and is squeezed and pre-tightened by the upper end face of the piston. The device can reduce the bit pressure loss during drilling.
Description
Technical field
The present invention relates to the oil drilling drilling rod, particularly relate to a kind of with boring the vibration drilling rod.
Background technology
Horizontal well drilling technology is the recovery ratio that improves the oil field, an integrated technology that reduces face cost, yet in the horizontal well drilling process, often exist contact between drill string and the borehole wall, will apply axial resistance and rotation torque like this on drill string, make axial rub resistance increment, rotation torque increase.Especially in the extended horizontal well drilling well, because it has long horizontal movement section high deviation angle and long bore hole steady tilted section, therefore there is larger frictional resistance.The existence of frictional resistance makes the gravity (the pressure of the drill) of DHA can not effectively be delivered to drill bit, and the while may be caused drill string limitation destruction and be caused down-hole accident.Be mainly to solve from drilling technology optimization and drilling fluid optimization two aspects for the problem that reduces drilling well frictional resistance in producing at present, still do not effectively reduce the drilling tool of frictional resistance.
Summary of the invention
The purpose of this utility model be to provide a kind of reduce between drilling assembly and the borehole wall frictional resistance, reduce the pressure of the drill loss with boring the vibration drilling rod.
For this reason, the technical solution of the utility model is as follows:
A kind of with boring the vibration drilling rod, comprise: by central tube with bear the central tube assembly that body forms and the urceolus assembly that is formed by upper shell, middle cylinder body, lower contact successively, top connection is formed at described central tube top, and forms from top connection the 1st～4 grade of hierarchic structure that Outside Dimensions reduces successively downwards; Described urceolus assembly is socketed in outside described central tube assembly, and can move up and down with respect to the central tube assembly; Described upper shell is socketed in outside described the 1st～2 hierarchic structure; Describedly bear body to be arranged on described middle cylinder body inboard, and be connected on described the 3rd hierarchic structure place by thread bush, and its length is identical with this director's degree; Be formed with a boss in the inboard close center of described middle cylinder body, be formed with a depression in the corresponding position that bears body, the length of described depression is greater than the length of described boss, and described boss stretches into described recess; Be provided with a dishful of spring group between described middle cylinder body lower inside and described the 4th hierarchic structure; Be provided with a piston in described central tube lower end, the upper end of this piston is threaded with the lower end of central tube; Described dish spring group is located by the lower end that bears body, and is subject to simultaneously the upper surface extruding pretension of piston.
Preferably, described the 2nd grade of hierarchic structure place forms outer hexagonal structure, and the external structure of the internal construction of described upper shell and described the 2nd grade of hierarchic structure adapts.
In addition, be provided with a scraper between inboard, upper shell upper end and described central tube; Seal by airtight and watertight padding between described piston lower end and described lower contact, to increase sealing; Middle cylinder body is threaded respectively with upper shell and lower contact; The lower end of described lower contact is connected with a hydraulic pressure governor motion.
Of the present utility modelly utilize this performance of axial vibration with boring the vibration drilling rod, can make mud motor in the restriction of the middle breakthrough drilling depth of creeping into of extended reach well, near making drilling assembly produces axial vibration by a small margin, make the static friction between drilling assembly and the borehole wall become dynamic friction, thereby significantly reduce frictional resistance.The application of this instrument can reduce in various drilling processes, the particularly loss of the pressure of the drill in the process of the horizontal drilling that uses mud motor, reduces simultaneously to cause because of the drilling rod Strength Failure risk of down-hole accident.
This device adopts the waterpower pulse effect directly to bring out mechanical oscillation under the prerequisite that does not increase the ground installation ability, can realize with boring vibration, and by on propose or transfer the switching that drilling tool is realized vibration.This apparatus structure is simple, the reliability of system and safe, and manufacturing cost and use cost is low.
Description of drawings
Fig. 1 is the cross-sectional view with boring the vibration drilling rod of the present utility model;
Fig. 2 is the cross-sectional view along A-A direction in Fig. 1;
Fig. 3 is the cross-sectional view along B-B direction in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the structure with boring the vibration drilling rod of the present utility model is elaborated.
As shown in Figure 1-Figure 3, should comprise with boring the vibration drilling rod: by central tube 1 with bear the central tube assembly that body 5 forms and the urceolus assembly that is formed by upper shell 3, middle cylinder body 4, lower contact 9 successively.
Top connection is formed at central tube 1 top, is connected with the top drilling tool.Form from top connection the 1st～4 grade of hierarchic structure that Outside Dimensions reduces successively downwards; The urceolus assembly is socketed in outside the central tube assembly, and can move up and down with respect to the central tube assembly.Upper shell 3 is socketed in outside described the 1st～2 hierarchic structure, bear body 5 and be arranged on middle cylinder body 4 inboards, and be connected on the 3rd hierarchic structure place by thread bush, and its length is identical with this director's degree.Be formed with a boss in the inboard close center of middle cylinder body 4, be formed with a depression in the corresponding position that bears body 5, the length of described depression is greater than the length of described boss, and described boss stretches into recess.Be provided with a dishful of spring group 6 between middle cylinder body 4 lower inside and the 4th hierarchic structure; Be provided with a piston 7 in central tube 1 lower end, the upper end of this piston 7 is threaded with the lower end of central tube 1.Dish spring group 6 is located by the lower end that bears body 5, and is subject to simultaneously the upper surface extruding pretension of piston 7.
The 2nd grade of hierarchic structure place of central tube 1 forms outer hexagonal structure, and the outer hexagonal structure of the internal construction of upper shell 3 and the 2nd grade of hierarchic structure adapts, and can bear simultaneously drilling tool pulling force and moment of torsion.
In addition, be provided with a scraper 2 between upper shell 3 inboards, upper end and central tube 1, seal by airtight and watertight padding between piston 7 lower ends and lower contact 9, to increase sealing.
Suitable water-pressure regulating device is installed in lower contact 9, and the pressure oscillation of water-pressure regulating device is converted into the cyclic loading that acts on this vibration drilling rod, makes this vibration drilling rod can also axial vibration when bearing moment of torsion.
The operating principle of this vibration drilling rod is as follows:
The vibration drilling rod is subject to axial tension in entering the well process, central tube 1 and bear central tube assembly that body 5 forms and produce vertically with upper shell 3, middle cylinder body 4 and lower contact 9 composition urceolus assemblys and relatively move.The lower surface of the boss on middle cylinder body 4 is positioned to bear the lower surface of body 5.The pulling force of vibration drilling rod finally passes to the top connection of central tube 1 through lower contact 9, middle cylinder body 4 and dish spring group 6.When the vibration drilling rod when being in this extended state, due to the restriction that bears body 5 and middle cylinder body 4, the pressure oscillation of drilling rod inside can't make this vibration drilling rod pull on to stretch, thereby this drilling rod does not vibrate.When drilling tool during fully down to the shaft bottom, this vibration drilling rod is in the promotion lower compression of the pressure of the drill, fits with the lower surface of upper shell 3 in the upper surface that bears body 5, and the insufficient pressure that be subject to due to piston this moment is with balance upper drilling string pressure, so this vibration drilling rod does not still vibrate.When carrying a segment distance (pick up height is relevant with the design parameters of this vibration drilling rod) on drilling tool is fully behind the shaft bottom, all separate with the urceolus assembly upper and lower end face that bears body 5, and the spring of this moment is in initial its pre-compressed state substantially.
The using method of this device is as follows:
Connect suitable water-pressure regulating device below this vibration drilling rod, and be connected to together the drilling tool appropriate location, then with at the bottom of the drilling assembly lower going-into-well, then on carry the drilling tool certain altitude, drilling rod just begins vibration.
Be connected with suitable water-pressure regulating device below this vibration drilling rod, the purpose of water-pressure regulating device is mainly long-pending by the overflow section of periodically-varied hydrophthalmia, thereby makes the periodic pressure oscillation of the inner generation of drilling rod.When the drilling rod internal pressure raises, piston 7 pressurizeds and to promote central tube 1 up, it is descending that pressure promotes lower contact 9 simultaneously, and dish spring group 6 is compressed; When the recovery of drilling rod internal pressure, dish spring group 6 pushing pistons 7 are descending and promotion lower contact 9 is up.In the vibration drilling rod, a pressure lifting produces once drilling rod and elongates contraction, i.e. a vibration period.The vibration drilling rod produces periodic axial vibration under the effect of periodic pressure fluctuation, thereby makes other drilling tool that is connected with this vibration drilling rod produce axial vibration.Drilling tool makes drilling tool become dynamic friction in the static friction of down-hole in the extensional vibration that well produces, and frictional resistance just reduces greatly like this.
Claims (6)
1. one kind is vibrated drilling rod with boring, it is characterized in that: comprise by central tube (1) and bear the central tube assembly that body (5) forms and the urceolus assembly that is formed by upper shell (3), middle cylinder body (4), lower contact (9) successively, top connection is formed at described central tube (1) top, and forms from top connection the 1st～4 grade of hierarchic structure that Outside Dimensions reduces successively downwards; Described urceolus assembly is socketed in outside described central tube assembly, and can move up and down with respect to the central tube assembly; Described upper shell (3) is socketed in outside described the 1st～2 hierarchic structure; The described body (5) that bears is arranged on described middle cylinder body (4) inboard, and is connected on described the 3rd hierarchic structure place by thread bush, and its length is identical with this director's degree; Be formed with a boss in the inboard close center of described middle cylinder body (4), be formed with a depression in the corresponding position that bears body (5), the length of described depression is greater than the length of described boss, and described boss stretches into described recess; Be provided with a dishful of spring group (6) between described middle cylinder body (4) lower inside and described the 4th hierarchic structure; Be provided with a piston (7) in described central tube (1) lower end, the upper end of this piston (7) is threaded with the lower end of central tube (1); Described dish spring group (6) is located by the lower end that bears body (5), and is subject to simultaneously the upper surface extruding pretension of piston (7).
2. according to claim 1 with boring the vibration drilling rod, it is characterized in that: described the 2nd grade of hierarchic structure place forms outer hexagonal structure, and the external structure of the internal construction of described upper shell (3) and described the 2nd grade of hierarchic structure adapts.
3. according to claim 1 with boring the vibration drilling rod, it is characterized in that: be provided with a scraper (2) between inboard, upper shell (3) upper end and described central tube (1).
4. according to claim 1 with boring the vibration drilling rod, it is characterized in that: seal by airtight and watertight padding between described piston (7) lower end and described lower contact (9).
5. according to claim 1 with boring the vibration drilling rod, it is characterized in that: described middle cylinder body (4) is threaded respectively with described upper shell (3) and lower contact (9).
6. according to claim 1 with boring the vibration drilling rod, it is characterized in that: the lower end of described lower contact (9) is connected with a hydraulic pressure governor motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748690 CN202990896U (en) | 2012-12-31 | 2012-12-31 | Vibration-while-drilling drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748690 CN202990896U (en) | 2012-12-31 | 2012-12-31 | Vibration-while-drilling drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990896U true CN202990896U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220748690 Expired - Fee Related CN202990896U (en) | 2012-12-31 | 2012-12-31 | Vibration-while-drilling drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233189A (en) * | 2021-12-18 | 2022-03-25 | 江苏航天鸿鹏数控机械有限公司 | Clutch for petroleum drilling |
-
2012
- 2012-12-31 CN CN 201220748690 patent/CN202990896U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233189A (en) * | 2021-12-18 | 2022-03-25 | 江苏航天鸿鹏数控机械有限公司 | Clutch for petroleum drilling |
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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: 20130612 Termination date: 20161231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |