CN209780818U - Connecting rod type friction-reducing oscillation tool - Google Patents
Connecting rod type friction-reducing oscillation tool Download PDFInfo
- Publication number
- CN209780818U CN209780818U CN201920506082.5U CN201920506082U CN209780818U CN 209780818 U CN209780818 U CN 209780818U CN 201920506082 U CN201920506082 U CN 201920506082U CN 209780818 U CN209780818 U CN 209780818U
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- impact head
- shell
- column
- sleeve
- connecting rod
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Abstract
the utility model relates to a connecting rod formula oscillation tool that rubs falls belongs to the oscillation tool technical field in the pit. The connecting rod type friction-reducing oscillation tool comprises an upper joint, an impeller, a connecting rod, a connecting sleeve, an impact head and a shell: one end of the shell is movably provided with a rotating sleeve through a connecting sleeve and a bearing; one end of the rotating sleeve is movably provided with an upper joint through a bearing; a flow dividing column is fixedly arranged in the connecting sleeve through a limiting cylinder; one end of the flow distribution column is fixedly provided with a flow distribution cap; the flow dividing column is movably connected with the rotary sleeve through a supporting bearing; a turbine is arranged on the flow dividing column on one side of the support bearing; an impact head is movably arranged in the shell through a positioning spring; an impeller is movably arranged in the shell between the impact head and the splitter column through a supporting rotating shaft. When the connecting rod type friction-reducing oscillation tool works, the problem that the oscillation frequency of the existing oscillation tool is fixed is solved; the requirements of people for use are met.
Description
Technical Field
the utility model relates to a connecting rod formula oscillation tool that rubs falls belongs to the oscillation tool technical field in the pit.
Background
in the field of oil exploration, friction resistance is an important factor affecting the drilling rate. When the well is drilled normally, the drilling tool assembly and the well wall are in a static friction state. Whether the vertical well, the directional well or the horizontal well is adopted, friction resistance between a drill string and a well wall is an important factor influencing the drilling speed in the drilling process, the mechanical drilling speed is low due to extra torque and friction resistance caused by friction between a drill group combination and the well wall, the tool surface is difficult to control, a single-trip drilling ruler is few, serious abrasion is caused to the drill string and a drill bit, and the like. For directional and horizontal wells, high friction can also create a curved borehole, thereby reducing the ability of the drill rig to reach maximum depth and even affecting well production. Particularly, in the drilling process of a horizontal well, the drilling tool can generate large friction resistance and pressure supporting phenomena in a well section with large curvature of a well bore or an overlong horizontal section, and the drilling pressure cannot be effectively applied. The problems of large friction resistance and pressure supporting not only seriously affect the mechanical drilling speed of the horizontal well, but also easily cause the occurrence of underground complex accidents such as sticking and blocking and the like. At present, people often connect a hydraulic oscillator capable of generating axial oscillation on a pipe column for reducing friction resistance. The hydraulic oscillator changes static friction to which the drilling tool is subjected downhole into dynamic friction through pressure pulses. The high-frequency oscillation of the hydraulic oscillator changes the pressurizing mode which only depends on the self gravity of the drilling tool. When the hydraulic oscillator drives the drilling tool to oscillate underground, the static friction force between the drilling tool and the well wall is converted into the dynamic friction force, and the use requirement is met to a certain extent.
But due to the limitation of the structure of the existing hydraulic oscillator, the hydraulic oscillator generates axial oscillation by means of shock; the problems of easy abrasion and fixed oscillation frequency which can not be adjusted exist, and the use requirement of people can not be met.
Disclosure of Invention
The utility model aims to provide a: the connecting rod type friction-reducing oscillation tool is compact in structure and ingenious in design, and solves the problems that an existing oscillation tool is prone to abrasion and fixed in oscillation frequency.
The technical scheme of the utility model is that:
A connecting rod type friction-reducing oscillation tool comprises an upper joint, a rotary sleeve, a flow dividing cap, a flow dividing column, a turbine, a limiting cylinder, an impeller, a connecting rod, a connecting sleeve, an impact head and a shell; the method is characterized in that: one end of the shell is movably provided with a rotating sleeve through a connecting sleeve and a bearing; one end of the rotating sleeve is movably provided with an upper joint through a bearing; a flow dividing column is fixedly arranged in the connecting sleeve through a limiting cylinder; one end of the shunt column extends into the rotary sleeve and is fixedly provided with a shunt cap; the flow dividing column is movably connected with the rotary sleeve through a supporting bearing; a turbine is arranged on the flow dividing column on one side of the support bearing; the stator part of the turbine is fixedly connected with the flow dividing column, and the rotor part of the turbine is fixedly connected with the rotating sleeve; an impact head is movably arranged in the shell through a positioning spring; an impeller is movably arranged in the shell between the impact head and the splitter column through a supporting rotating shaft; the impeller is movably connected with a connecting rod through a connecting pin arranged eccentrically; one end of the connecting rod is movably connected with the middle part of the impact head through a connecting pin.
A step through hole is formed in the rotating sleeve; a pressure build-up inner edge is arranged inside the inlet end of the rotating sleeve; and a limiting ring groove is formed in the circumferential surface of the joint of one end of the rotating sleeve and the upper joint, and the upper joint is connected with the limiting ring groove of the rotating sleeve in a sliding mode through a limiting pin.
The shunting cap is of a stepped shaft type structure, and the stepped part of the shunting cap is of a conical shape.
The tail end of the flow dividing column is of an upward inclined structure; a plurality of overflowing holes are uniformly distributed on the circumferential surface of the horizontal section of the flow dividing column; a diversion hole is arranged in the diversion column; the tail end of the diversion hole is communicated with the outside.
The inlet end of the limiting cylinder is of a conical structure.
The impact head is of an integrated structure; one end of the impact head is provided with a limit flange; spline teeth are uniformly arranged on the circumferential surface of the limiting flange, and the spline teeth of the limiting flange are in sliding connection with spline grooves arranged in the shell; a positioning flange is arranged on the circumferential surface of the impact head; the lower end of the impact head is provided with a connecting external thread; the tail end of the shell is connected with the circumferential surface of the impact head in a sliding way; the positioning spring is arranged on the impact head in the shell, and two ends of the positioning spring are respectively connected with the limiting flange and the shell.
The utility model has the advantages that:
When the connecting rod type friction-reducing oscillation tool works, friction-reducing oscillation is realized in a mode that the impact head moves back and forth, impact cannot be generated, the working environment of parts is improved, and the service life of each part is greatly prolonged; the frequency of the reciprocating movement of the impact head can be controlled by changing the hydraulic pressure of the drilling fluid, so that the problem of fixed oscillation frequency of the existing oscillation tool is solved; the requirements of people for use are met.
Drawings
FIG. 1 is a front view structural diagram of the present invention;
FIG. 2 is a cross-sectional view of the splitter column of the present invention;
FIG. 3 is a view showing the combination of the impeller, the connecting rod and the connecting column;
FIG. 4 is a cross-sectional view of the impact head of the present invention;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 6 is a schematic structural view of the impact head of the present invention moving downward to the limit position;
Fig. 7 is a schematic structural view of the impact head of the present invention moving up to the limit position.
In the figure: 1. the device comprises an upper joint, 2, a rotary sleeve, 3, a flow distribution cap, 4, a flow distribution column, 5, a turbine, 6, a support bearing, 7, an impeller, 8, a connecting rod, 9, a connecting sleeve, 10, an impact head, 11, a shell, 12, a limiting barrel, 13, a positioning spring, 14, a support rotating shaft, 15, a connecting pin, 16, a pressure-building inner edge, 17, an overflowing hole, 18, a flow guide hole, 19, a limiting flange, 20, a positioning flange, 21, a limiting pin, 22 and a limiting ring groove.
Detailed Description
The connecting rod type friction-reducing oscillation tool is composed of an upper connector 1, a rotating sleeve 2, a shunting cap 3, a shunting column 4, a turbine 5, a limiting cylinder 12, an impeller 7, a connecting rod 8, a connecting sleeve 9, an impact head 10 and a shell 11 (see the attached figure 1 in the specification).
One end of the shell 11 is connected with a connecting sleeve 9 through threads; one end of the connecting sleeve 9 is movably provided with a rotating sleeve 2 through a bearing; one end of the rotary sleeve 2 is movably provided with an upper joint 1 through a bearing.
A limiting ring groove 22 (refer to the attached figure 6 in the specification) is arranged on the circumferential surface of the joint of one end of the rotary sleeve 2 and the upper joint 1, and the upper joint 1 is connected with the limiting ring groove 22 of the rotary sleeve 2 in a sliding way through a limiting pin 21; the purpose of so setting is: so that the rotary sleeve 2 can only rotate relative to the upper joint 1 under the action of the limiting ring groove 22 and the limiting pin 21, thereby avoiding the problem of 'disjointing' between the upper joint 1 and the rotary sleeve 2. The other end of the rotary sleeve 2 is also provided with a limit pin 21 (not shown in the attached drawings), and the connecting sleeve 9 is also correspondingly provided with a limit ring groove 22 (not shown in the attached drawings); the purpose of so setting is: so that the rotary sleeve 2 can only rotate relative to the connecting sleeve 9, and the problem of 'disjointing' between the rotary sleeve 2 and the connecting sleeve 9 is avoided.
a step through hole is formed inside the rotary sleeve 2; the inner part of the inlet end of the rotating sleeve 2 is provided with a pressure build-up inner edge 16 (see the attached figure 1 in the specification). The purpose of the pressure build-up inner edge 16 is to: in the process that the drilling fluid entering the upper connector 1 passes through the pressure-retaining inner edge 16 of the rotary sleeve 2 during operation, the pressure of the drilling fluid entering the rotary sleeve 2 is increased in a mode that the flow area is reduced and the flow pressure is increased, and the purpose that the pressure of the drilling fluid impacts the turbine 5 is achieved.
The diversion column 4 is fixedly arranged in the connecting sleeve 9 through a limiting cylinder 12; therefore, the shell 11, the connecting sleeve 9 and the limiting cylinder 12 can be kept relatively fixed and form a whole.
The tail end of the splitter column 4 is in an upward inclined structure (see the description and the attached figure 1); a plurality of overflowing holes 17 are uniformly distributed on the circumferential surface of the horizontal section of the flow distribution column 4; a diversion hole 18 is arranged in the diversion column 4; the tail end of the diversion hole 18 is communicated with the outside. The purpose of so arranging the splitter column 4 is: when the drilling fluid is in work, after the drilling fluid enters the diversion hole 18 through the overflowing hole 17, the drilling fluid can impact the impeller 7 in an eccentric shape under the guidance of the diversion hole 18, and therefore the purpose of driving the impeller to rotate continuously in the same direction is achieved.
The inlet end of the limiting cylinder 12 is in a conical structure (see the description of the attached drawing 1), and the limiting cylinder 12 is arranged in such a way that: so that during operation, drilling fluid can smoothly enter the diversion hole 18 through the overflowing hole 17 along the conical surface of the limiting barrel 12, and the problem of leakage of the drilling fluid is avoided.
One end of the diversion column 4 extends to the inside of the rotary sleeve 2 and is fixedly provided with a diversion cap 3 (see the attached figure 3 in the specification); the shunting cap 3 is of a stepped shaft type structure, and the stepped part of the shunting cap 3 is of a conical shape. The purpose of so arranging the diverter cap 3 is: so that during operation, drilling fluid can evenly strike turbine 5 along the conical surface of reposition of redundant personnel cap 3 during operation, and then has reduced the uneven risk of turbine 5 atress.
The flow dividing column 4 is movably connected with the rotating sleeve 2 through a supporting bearing 6; the purpose of so setting is: so that the support bearing 6 can provide support for the splitter column 4 without hindering the rotation of the rotary sleeve 2 relative to the splitter column 4.
A turbine 5 is arranged on the splitter column 4 on one side of the support bearing 6; the stator part of the turbine 5 is fixedly connected with the splitter column 4, and the rotor part of the turbine 5 is fixedly connected with the rotary sleeve 2 (see the description and the attached figure 1); so when drilling fluid strikes turbine 5, under the drive of turbine 5 rotor, it can drive swivel housing 2 synchronous rotation.
an impact head 10 is movably arranged in the shell 11 through a positioning spring 13 (see the description and the attached figure 1). The impact head 10 is of a one-piece structure (see the specification, figure 4); one end of the impact head 10 is provided with a limit flange 19; spline teeth are uniformly arranged on the circumferential surface of the limiting flange 19, and the spline teeth of the limiting flange 19 are in sliding connection with spline grooves arranged in the shell 11; the purpose of so setting is: so that the impact head 10 can only slide back and forth along the axial direction of the housing 11 and cannot rotate relative to the housing.
A positioning flange 20 is arranged on the circumferential surface of the impact head 10; the lower end of the impact head 10 is provided with a connecting external thread; the tail end of the shell 11 is connected with the circumferential surface of the impact head 10 in a sliding way; the positioning spring 13 is installed on the impact head 10 inside the housing 11, and both ends of the positioning spring 13 are respectively connected with the limiting flange 19 and the housing 11. The positioning spring 13 is provided for the purpose of: so that the impact head 10 is at the non-limit position (refer to the attached figure 1 of the specification) under the action of the positioning spring 13, and thus the impact head 10 is positioned by the positioning spring 13 in the process of lowering the pipe column, and the impact head 10 is at the non-limit position, so that the problem that the impact head 10 is easily damaged when being at the limit position for a long time is avoided.
an impeller 7 is movably arranged in a shell 11 between the impact head 10 and the splitter column 4 through a supporting rotating shaft 14; when the impeller 7 receives hydraulic shock, it rotates.
The impeller 7 is movably connected with a connecting rod 8 through a connecting pin 15 which is eccentrically arranged; one end of the connecting rod 8 is movably connected with the middle part of the impact head 10 through a connecting pin 15 (see the attached figure 1 in the specification). Thus, when the impeller 7 rotates, the impact head 10 can be driven to reciprocate by the connecting rod 8 and the connecting pin 15.
Assembling the connecting rod type friction-reducing oscillation tool on a running pipe column, and running the connecting rod type friction-reducing oscillation tool into a well along with the pipe column, wherein when the pipe column moves in place, the drilling process is carried out; the pipe column is continuously pressed towards the connecting rod type friction-reducing oscillation tool, and pressed drilling fluid enters the rotary sleeve 2 through the upper connector 1 to impact the turbine 5.
Under the effect that drilling fluid is strikeed, the rotor of turbine 5 drives swivel housing 2 synchronous rotation, and swivel housing 2 rotates the in-process, takes place dynamic friction with the wall of a well to and then reduce the friction between swivel housing 2 and the wall of a well.
After passing through the turbine 5, the drilling fluid enters the diversion hole 18 through the overflowing hole 17, and then eccentrically impacts the impeller 7 under the guidance of the diversion hole 18; the impeller 7 is continuously rotated in the same direction after being impacted.
During the rotation process of the impeller 7, the impact head 10 can be driven to reciprocate through the connecting rod 8 and the connecting pin 15, and during the reciprocating motion process of the impact head 10; the tubular columns connected with the oscillating tool can be synchronously driven to move back and forth, so that static friction force of the tubular columns below the oscillating tool, which is in contact with the well wall, is converted into sliding friction force, and the purpose of reducing friction resistance is further achieved.
During the rotation of the impeller 7, the drilling fluid, which has performed the impact, finally flows through the impact head 10 into the string connected thereto and powers the action of the drilling bit. In the process, people can adjust the pressure of the drilling fluid according to the requirement, when the pressure of the drilling fluid is higher, the reciprocating frequency of the impact head 10 is higher, and vice versa, the pressure is lower; therefore, the problem that the existing oscillation tool has fixed oscillation frequency can be solved, and the use requirement of people is met.
Claims (6)
1. A connecting rod type friction-reducing oscillation tool is composed of an upper connector (1), a rotary sleeve (2), a flow dividing cap (3), a flow dividing column (4), a turbine (5), a limiting cylinder (12), an impeller (7), a connecting rod (8), a connecting sleeve (9), an impact head (10) and a shell (11); the method is characterized in that: one end of the shell (11) is movably provided with a rotating sleeve (2) through a connecting sleeve (9) and a bearing; one end of the rotating sleeve (2) is movably provided with an upper joint (1) through a bearing; a diversion column (4) is fixedly arranged in the connecting sleeve (9) through a limiting cylinder (12); one end of the shunt column (4) extends into the rotary sleeve (2) and is fixedly provided with a shunt cap (3); the flow dividing column (4) is movably connected with the rotating sleeve (2) through a supporting bearing (6); a turbine (5) is arranged on the flow dividing column (4) at one side of the support bearing (6); the stator part of the turbine (5) is fixedly connected with the shunt column (4), and the rotor part of the turbine (5) is fixedly connected with the rotary sleeve (2); an impact head (10) is movably arranged in the shell (11) through a positioning spring (13); an impeller (7) is movably arranged in the shell (11) between the impact head (10) and the flow dividing column (4) through a supporting rotating shaft (14); the impeller (7) is movably connected with a connecting rod (8) through a connecting pin (15) which is eccentrically arranged; one end of the connecting rod (8) is movably connected with the middle part of the impact head (10) through a connecting pin (15).
2. The link type friction reducing oscillation tool according to claim 1, wherein: a step through hole is formed in the rotating sleeve (2); a pressure build-up inner edge (16) is arranged inside the inlet end of the rotary sleeve (2); a limiting ring groove (22) is arranged on the circumferential surface of the joint of one end of the rotary sleeve (2) and the upper joint (1), and the upper joint (1) is connected with the limiting ring groove (22) of the rotary sleeve (2) in a sliding way through a limiting pin (21).
3. the link type friction reducing oscillation tool according to claim 2, wherein: the shunt cap (3) is of a stepped shaft type structure, and the stepped part of the shunt cap (3) is of a conical shape.
4. The link type friction reducing oscillation tool according to claim 3, wherein: the tail end of the flow dividing column (4) is of an upward inclined structure; a plurality of overflowing holes (17) are uniformly distributed on the circumferential surface of the horizontal section of the flow dividing column (4); a diversion hole (18) is arranged in the diversion column (4); the tail end of the diversion hole (18) is communicated with the outside.
5. The link type friction reducing oscillation tool according to claim 4, wherein: the inlet end of the limiting cylinder (12) is in a conical structure.
6. The link type friction reducing oscillation tool according to claim 5, wherein: the impact head (10) is of an integrated structure; one end of the impact head (10) is provided with a limit flange (19); spline teeth are uniformly arranged on the circumferential surface of the limiting flange (19), and the spline teeth of the limiting flange (19) are in sliding connection with spline grooves arranged in the shell (11); a positioning flange (20) is arranged on the circumferential surface of the impact head (10); the lower end of the impact head (10) is provided with a connecting external thread; the tail end of the shell (11) is connected with the circumferential surface of the impact head (10) in a sliding way; the positioning spring (13) is arranged on the impact head (10) in the shell (11), and two ends of the positioning spring (13) are respectively connected with the limiting flange (19) and the shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920506082.5U CN209780818U (en) | 2019-04-15 | 2019-04-15 | Connecting rod type friction-reducing oscillation tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920506082.5U CN209780818U (en) | 2019-04-15 | 2019-04-15 | Connecting rod type friction-reducing oscillation tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780818U true CN209780818U (en) | 2019-12-13 |
Family
ID=68802690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920506082.5U Expired - Fee Related CN209780818U (en) | 2019-04-15 | 2019-04-15 | Connecting rod type friction-reducing oscillation tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209780818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882102A (en) * | 2019-04-15 | 2019-06-14 | 长江大学 | A kind of link-type drop is rubbed oscillation tool |
-
2019
- 2019-04-15 CN CN201920506082.5U patent/CN209780818U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882102A (en) * | 2019-04-15 | 2019-06-14 | 长江大学 | A kind of link-type drop is rubbed oscillation tool |
| CN109882102B (en) * | 2019-04-15 | 2024-03-22 | 长江大学 | Connecting rod type friction-reducing oscillation tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |