CN212296276U - Underground anti-reverse debris bed flushing tool - Google Patents
Underground anti-reverse debris bed flushing tool Download PDFInfo
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- CN212296276U CN212296276U CN202021010370.0U CN202021010370U CN212296276U CN 212296276 U CN212296276 U CN 212296276U CN 202021010370 U CN202021010370 U CN 202021010370U CN 212296276 U CN212296276 U CN 212296276U
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Abstract
The utility model relates to a rock debris bed flushing tool for preventing underground reverse rotation; belongs to the technical field of oil and gas drilling tools. An upper joint is installed at one end of the outer pipe in a threaded mode, and an end cover is installed at the other end of the outer pipe in a threaded mode; an upper central tube is installed in the outer tube on the inner side of the upper joint through a retaining ring and a supporting disc, a transmission sliding sleeve is installed on the upper central tube in a sliding mode, a lower central tube is installed on one side of the upper central tube, and a lower joint is installed at one end of the lower central tube in a threaded mode. This instrument passes through the interlock between transmission cover and the transmission sliding sleeve, can transship, drilling tool stall back at the high-pressure pump operation, prevents that the drilling tool from producing the dropout between the drilling string that the reversal leads to and the structure also can produce the problem of corresponding destruction, realizes washing the shaft bottom detritus bed through biography pressure hole, pressurization hole and flushing hole, has solved current detritus bed cleaning device and has easily caused the problem of 2 clearance. The tool has the characteristics of simple structure and good practicability, and has positive popularization significance for oil and gas drilling.
Description
Technical Field
The utility model relates to a rock debris bed flushing tool for preventing underground reverse rotation; belongs to the technical field of oil and gas drilling tools.
Background
In recent years, with the technological change, China has been greatly developed in the field of drilling engineering, and the exploitation of conventional oil and gas resources is increased year by year, so that people have to look to the field of unconventional oil and gas resources. However, due to the extremely high requirements of unconventional oil and gas resources on the exploitation technology and the complex and changeable geological conditions in China, a plurality of technical problems are not solved, so that the exploitation becomes extremely difficult. The technical problems generally existing at present are as follows:
1. the cleaning of the bottom hole detritus bed in the drilling process, when the bottom hole detritus bed is accumulated too much in the drilling process, the drilling can be blocked, the rotating speed can be reduced, and finally the whole well can be scrapped,
2. in the drilling process, when bottom pressure is too big, the pump is stopped when high-pressure pump operation is transshipped, and drilling tool stall back, the energy of drilling string storage will release suddenly in the drilling process, lets the drilling tool produce the reversal, if this problem is solved in time, the reversal many times will produce the dropout and its structure also can produce corresponding destruction between the drilling string, and from this, the clearance of detritus bed and the research and development of preventing reverse device are the problem that we need to solve urgently.
Disclosure of Invention
The utility model aims to provide a: aiming at the defects in the prior art, the underground anti-reverse rock debris bed flushing tool can flush the rock debris bed at the bottom of the well, and can prevent the drill strings from tripping caused by the reverse rotation of the drill tool and prevent the corresponding damage problem of the structure after the high-pressure pump is overloaded in operation and the drill tool stops operating.
The technical scheme of the utility model is that:
the utility model provides a detritus bed washing tool that anti-reversion in pit, includes outer tube, top connection, lower clutch, goes up center tube and lower center tube, its characterized in that: an upper joint is installed at one end of the outer pipe in a threaded mode, and an end cover is installed at the other end of the outer pipe in a threaded mode; an upper central tube is installed in the outer tube on the inner side of the upper joint through a retaining ring and a supporting disc, a transmission sliding sleeve is installed on the upper central tube in a sliding mode, a lower central tube is installed in the outer tube on one side of the upper central tube through a transmission sleeve, one end of the lower central tube penetrates through the end cover and extends to the outer end of the end cover, and a lower joint is installed on the end head of the lower central tube extending to the outer end of.
The bearing is arranged on the lower central tube between the transmission sleeve and the end cover, the lower central tube is T-shaped, and a gasket is arranged between the lower central tube extending to the outer end of the end cover and the end cover.
The upper central pipe is in threaded connection with the upper joint; the supporting disk is connected with the retaining ring in a contact mode, and the supporting disk is connected with the central tube in a sliding mode.
The transmission sleeve is a cylindrical body and is fixedly connected with the lower central pipe through a cylindrical pin.
The transmission sliding sleeve is a cylindrical body, a stepped hole is formed in the transmission sliding sleeve, and the transmission sliding sleeve is connected with the upper central tube in a sliding and sealing mode through the matching of a key groove and a key.
The upper central tube and the lower central tube are connected in a sealing sliding contact manner. The end surfaces of the transmission sleeve and the transmission sliding sleeve which correspond to each other are respectively provided with an occlusion tooth, and the transmission sleeve and the transmission sliding sleeve are in occlusion connection through a fit clearance of the occlusion teeth.
The circumference of the upper central tube on one side of the transmission sliding sleeve is uniformly provided with a limiting convex shoulder, and the circumference of the upper central tube between the limiting convex shoulder and the transmission sliding sleeve is provided with a sliding sleeve spring.
An inner flange is arranged on the inner wall of the outer pipe at the other side of the transmission sliding sleeve; and a supporting spring is arranged on the circumference of the upper central tube between the transmission sliding sleeve and the supporting disk, and the supporting spring is respectively in contact connection with the transmission sliding sleeve and the supporting disk.
The supporting disk is cup-shaped, and a pressurizing hole is formed in the circumference of the supporting disk. Pressure transmitting holes are uniformly distributed on the circumference of the upper central tube corresponding to the supporting disk, flushing holes are uniformly distributed on the circumference of the outer tube corresponding to the supporting disk, the pressure transmitting holes are communicated with the central hole of the upper central tube, and the pressure transmitting holes are intermittently communicated with the flushing holes through pressurizing holes.
The drilling fluid supercharging device is characterized in that an arc-shaped slotted hole of 60 degrees is arranged below the supporting plate, a through hole groove of 40 degrees is arranged below the arc-shaped slotted hole, so that the drilling fluid is supercharged, the inner diameter circle of the supporting plate is an eccentric circle, and the arc-shaped slotted hole is always positioned right below under the action of self gravity.
Compared with the prior art, this the utility model has the advantages of:
this in pit anti-detritus bed washing tool that reverses passes through the interlock between transmission cover and the transmission sliding sleeve, can transship in high-pressure pump operation, drilling tool stop operation back, prevent that the drilling tool from producing the dropout between the drilling string that the reversal leads to, and the structure also can produce the problem of corresponding destruction, through the biography pressure hole of last center tube circumference, the last pressurization hole of transmission sliding sleeve and the washing hole realization on the outer tube circumference are washed the detritus bed in the shaft bottom, and have fine washing effect, the problem of current detritus bed cleaning device easily causes 2 clearance has been solved. The underground anti-reverse rock debris bed flushing tool has the characteristics of simple structure and good practicability, improves the working efficiency, reduces the operation cost, and has positive popularization significance for oil and gas drilling.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the outer tube of the present invention;
fig. 3 is a schematic structural view of the upper center tube of the present invention;
fig. 4 is a schematic structural view of the lower center tube of the present invention;
fig. 5 is a schematic structural view of a support plate of the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5 taken along line A-A;
fig. 7 is a schematic structural view of the transmission sliding sleeve of the present invention;
fig. 8 is a schematic structural diagram of the transmission sleeve of the present invention.
In the figure: 1. the device comprises an outer pipe, 2, an upper joint, 3, a lower joint, 4, an upper central pipe, 5, a lower central pipe, 6, an end cover, 7, a retainer ring, 8, a supporting plate, 9, a pressurizing hole, 10, a pressure transfer hole, 11, a flushing hole, 12, a transmission sliding sleeve, 13, a limiting convex shoulder, 14, a sliding sleeve spring, 15, an inner flange, 16, a supporting spring, 17, a transmission sleeve, 18, a gasket, 19, a bearing, 20 and a cylindrical pin.
Detailed Description
The underground anti-reverse detritus bed flushing tool comprises an outer pipe 1, an upper joint 2, a lower joint 3, an upper central pipe 4 and a lower central pipe 5, wherein the upper joint 2 is installed at one end of the outer pipe 1 in a threaded mode, and an end cover 6 is installed at the other end of the outer pipe 1 in a threaded mode; an upper central tube 4 is arranged in the outer tube 1 at the inner side of the upper joint 2 through a retainer ring 7 and a supporting disc 8. The upper central tube 4 is in threaded connection with the upper joint 2; the supporting disc 8 is in contact connection with the retainer ring 7; and a sealing ring is arranged between the retainer ring 7 and the upper central tube 4 to ensure the sealing between the retainer ring 7 and the upper central tube 4. The supporting disk 8 is in a cup shape, and the supporting disk 8 is eccentrically arranged on the upper central tube 4; the support disc 8 is in sliding connection with the upper central tube 4. A pressurizing hole 9 is formed on the circumference of the support disk 8.
The upper central tube 4 is provided with a transmission sliding sleeve 12 in a sliding manner, the transmission sliding sleeve 12 is a cylindrical body, a stepped hole is formed in the transmission sliding sleeve 12, the transmission sliding sleeve 12 is connected with the upper central tube in a sliding and sealing manner through the matching of a key groove and a key, and the transmission sliding sleeve 12 can axially slide on the upper central tube 4 but cannot circumferentially rotate. The circumference of the upper central tube 4 at one side of the transmission sliding sleeve 12 is uniformly provided with a limiting convex shoulder 13, and the circumference of the upper central tube 4 between the limiting convex shoulder 13 and the transmission sliding sleeve 12 is provided with a sliding sleeve spring 14. The sliding sleeve spring 14 is respectively connected with the limiting shoulder 13 and the transmission sliding sleeve 12 in a contact manner. An inner flange 15 is arranged on the inner wall of the outer tube 1 at the other side of the transmission sliding sleeve 12; and a supporting spring 16 is arranged on the circumference of the upper central tube 4 between the transmission sliding sleeve 12 and the supporting disk 8, and the supporting spring 16 is respectively in contact connection with the transmission sliding sleeve 12 and the supporting disk 8.
A lower central tube 5 is arranged in the outer tube 1 on one side of the upper central tube 4, the lower central tube 5 is T-shaped, one end of the lower central tube 5 penetrates through the end cover 6 and extends to the outer end of the end cover 6, and a gasket 18 is arranged between the lower central tube 5 extending to the outer end of the end cover 6 and the end cover 6. To avoid direct contact between the lower central tube 5 and the end cap 6; the end of the lower central tube 5 extending to the outer end of the end cover is provided with a lower joint 3 in a threaded manner. The lower central tube 5 is slidably connected to an end cap 6.
The lower central tube 5 is fixedly provided with a transmission sleeve 17 through a cylindrical pin 20, the transmission sleeve 17 is a cylindrical body, and the transmission sleeve 17 is movably connected with the outer tube 1. A bearing 19 is arranged on the lower central tube 5 between the transmission sleeve 17 and the end cover 6 to facilitate the rotation of the lower central tube 5.
The upper central tube 4 and the lower central tube 5 are connected in a sealing sliding contact manner. The end surfaces of the transmission sleeve 17 and the transmission sliding sleeve 12 are respectively provided with meshing teeth, and the transmission sleeve 17 and the transmission sliding sleeve 12 are in meshing connection through the matching gaps of the meshing teeth.
The pressurizing hole 9 of the underground anti-reverse detritus bed flushing tool and the central hole of the upper central tube 4 are both reducing stepped holes, so that the underground anti-reverse detritus bed flushing tool has the functions of throttling and pressurizing, and the elasticity of the supporting spring 16 is greater than that of the sliding sleeve spring 14; so that the support spring 16 can compress the sliding sleeve spring 14 through the transmission sliding sleeve 12 during operation, and the support plate 8 forms a seal for the flushing hole 11 in an initial state.
When the underground anti-reverse rock debris bed flushing tool works; drilling fluid enters a central hole of an upper central tube 4 from an upper joint 2, and the central hole of the upper central tube 4 is a reducing stepped hole and has the functions of throttling and pressurizing, so that drilling fluid is formed in the upper central tube 4 to be subjected to pressure holding, at the moment, a part of drilling fluid continuously enters a lower central tube 5 in a downward direction and finally acts on a drilling tool, the other part of drilling fluid enters a cavity between a check ring 7 and a supporting disc 8 through a pressure transfer hole 10, and the supporting disc 8 is pushed to move rightwards along the upper central tube 4 along with the increase of pressure.
In the process that the supporting disc 8 moves rightwards along the central tube 4, the supporting spring 16 is compressed, the supporting spring 16 pushes the transmission sliding sleeve 12 to move rightwards along the upper central tube 4, the transmission sliding sleeve 12 simultaneously extrudes the sliding sleeve spring 14 to store energy in the process of moving rightwards, after the transmission sliding sleeve 12 moves rightwards to a proper position, the meshing teeth of the transmission sliding sleeve 12 and the meshing teeth of the transmission sleeve 17 form a meshing state, and as the upper central tube 4 rotates along with the upper joint 2 and the outer tube 1 integrally during working, the meshing teeth of the transmission sliding sleeve 12 and the meshing teeth of the transmission sleeve 17 form the meshing state, the lower central tube 5 is driven to rotate, so that the lower joint 3 at the end of the lower central tube 5 and a drilling tool connected to the lower joint 3 are driven.
In the process that the supporting disc 8 moves rightwards along the central tube 4 and compresses the supporting spring 16, the distance between the supporting disc 8 and an inner flange 15 arranged on the inner wall of the outer tube 1 is gradually reduced; when the support disc 8 is contacted with the inner flange 15, the inner flange 15 blocks the support disc 8, and the support disc 8 cannot move rightwards, which indicates that the support disc is moved in place; at this time, the blocking state of the washing hole 11 by the support disk 8 is released; is in fit communication with the pressurizing hole 9.
Because the support plate 8 is eccentrically arranged on the upper central tube 4, particularly in horizontal drilling, under the action of the self weight of the support plate 8, the pressurizing hole 9 is always positioned below the upper central tube 4 (according to the figure); in the process that the outer tube 1 rotates relative to the supporting disc 8, the pressurizing hole 9 and the flushing hole 11 can be communicated for six times when the outer tube 1 rotates for one circle; the drilling fluid entering the cavity between the retainer ring 7 and the support disc 8 is ejected out through the pressurizing hole 9 and the flushing hole 11; therefore, during working, only the bottom hole detritus bed below the outer pipe 1 can be washed, and the well hole above the outer pipe 1 cannot be washed. During vertical drilling, the outer pipe 1 revolves at a high speed relative to the supporting disc 8, the supporting disc 8 automatically transfers at a slow and low speed along with the high-speed revolution of the outer pipe 1, the rotating speeds of the supporting disc 8 and the supporting disc are different, and the pressurizing hole 9 and the flushing hole 11 are intermittently communicated with each other; thereby flushing the bottom hole bed of cuttings at the periphery of the outer tube 1.
In the drilling process, when the bottom pressure is overlarge and the high-pressure pump runs and overloads, the pumping-stopping drilling fluid loses pressure, and after the drilling tool stops running, the energy stored in the drilling string in the drilling process is suddenly released, so that the drilling tool is reversed, and if the problem is not solved, the drilling string is tripped among the drilling strings due to repeated reversal, and the structure of the drilling string is correspondingly damaged. At this time, the support plate 8 is reset under the reset action of the support spring 16, meanwhile, the transmission sliding sleeve 12 is reset under the action of the sliding sleeve spring 14, the meshing state of the transmission sliding sleeve 12 and the transmission sleeve 17 is released, and the central tube 5 can only be driven by the reverse rotation of the drilling tool to idle.
This anti-detritus bed washing instrument that reverses in pit passes through the interlock between transmission sleeve 17 and the transmission sliding sleeve 12, can transship in the high-pressure pump operation, drilling tool stop operation back, prevent that the drilling tool from producing the dropout between the drilling string that the reversal leads to, and the structure also can produce the problem of corresponding destruction, through the pressure transmission hole 10 of the upper center tube 4 circumference, the pressure hole 9 on the transmission sliding sleeve 12 and the washing hole 11 on the outer tube 1 circumference realize washing the detritus bed in the pit, and have fine washing effect, the problem of current detritus bed cleaning device easily causes 2 clearance has been solved. The underground anti-reverse rock debris bed flushing tool has the characteristics of simple structure and good practicability, improves the working efficiency, reduces the operation cost, and has positive popularization significance for oil and gas drilling.
Claims (10)
1. The utility model provides a rock debris bed washing tool that anti-reversion in pit, includes outer tube (1), top connection (2), lower clutch (3), goes up center tube (4) and lower center tube (5), its characterized in that: an upper joint (2) is installed at one end of the outer pipe (1) in a threaded mode, and an end cover (6) is installed at the other end of the outer pipe (1) in a threaded mode; install center tube (4) through retaining ring (7) and supporting disk (8) in outer tube (1) of top connection (2) inboard, slidable mounting has transmission sliding sleeve (12) on going up center tube (4), be equipped with down center tube (5) through transmission cover (17) in outer tube (1) of going up center tube (4) one side, the one end of lower center tube (5) is passed end cover (6) and is extended to end cover (6) outer end, extend to lower center tube (5) end screw thread of end cover (6) outer end and install lower clutch (3).
2. A downhole anti-reverse cuttings bed flushing tool according to claim 1, wherein: the bearing (19) is arranged on the lower central tube (5) between the transmission sleeve (17) and the end cover (6), the lower central tube (5) is T-shaped, and a gasket (18) is arranged between the lower central tube (5) extending to the outer end of the end cover (6) and the end cover (6).
3. A downhole anti-reverse cuttings bed flushing tool according to claim 1, wherein: the upper central pipe (4) is in threaded connection with the upper joint (2); the supporting disc (8) is in contact connection with the retainer ring (7), and the supporting disc (8) is in sliding connection with the upper central tube (4).
4. A downhole anti-reverse cuttings bed flushing tool according to claim 1, wherein: the transmission sleeve (17) is a cylindrical body, and the transmission sleeve (17) is fixedly connected with the lower central tube (5) through a cylindrical pin (20).
5. A downhole anti-reverse cuttings bed flushing tool according to claim 1, wherein: the transmission sliding sleeve (12) is a cylindrical body, a stepped hole is formed in the transmission sliding sleeve (12), and the transmission sliding sleeve (12) is connected with the upper central tube (4) in a sliding and sealing mode through the matching of a key groove and a key.
6. A downhole anti-reverse cuttings bed flushing tool according to claim 1, wherein: the upper central pipe (4) and the lower central pipe (5) are connected in a sealing sliding contact manner, meshing teeth are respectively arranged on the corresponding end faces of the transmission sleeve (17) and the transmission sliding sleeve (12), and the transmission sleeve (17) and the transmission sliding sleeve (12) are connected in a meshing manner through matching gaps of the meshing teeth.
7. A downhole anti-reverse cuttings bed flushing tool according to claim 5, characterized in that: the transmission device is characterized in that limiting convex shoulders (13) are uniformly distributed on the circumference of the upper central tube (4) on one side of the transmission sliding sleeve (12), and sliding sleeve springs (14) are arranged on the circumference of the upper central tube (4) between the limiting convex shoulders (13) and the transmission sliding sleeve (12).
8. A downhole anti-reverse cuttings bed flushing tool according to claim 6, characterized in that: an inner flange (15) is arranged on the inner wall of the outer pipe (1) at the other side of the transmission sliding sleeve (12); and a supporting spring (16) is arranged on the circumference of the upper central tube (4) between the transmission sliding sleeve (12) and the supporting disc (8), and the supporting spring (16) is respectively in contact connection with the transmission sliding sleeve (12) and the supporting disc (8).
9. A downhole anti-reverse cuttings bed flushing tool according to claim 8, wherein: the supporting disk (8) is cup-shaped, and a pressurizing hole (9) is formed in the circumference of the supporting disk (8).
10. A downhole anti-reverse cuttings bed flushing tool according to claim 8, wherein: pressure transmission holes (10) are uniformly distributed on the circumference of an upper central tube (4) corresponding to a supporting disk (8), flushing holes (11) are uniformly distributed on the circumference of an outer tube (1) corresponding to the supporting disk (8), the pressure transmission holes (10) are communicated with a central hole of the upper central tube (4), and the pressure transmission holes (10) are intermittently communicated with the flushing holes (11) through pressurizing holes (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021010370.0U CN212296276U (en) | 2020-06-05 | 2020-06-05 | Underground anti-reverse debris bed flushing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021010370.0U CN212296276U (en) | 2020-06-05 | 2020-06-05 | Underground anti-reverse debris bed flushing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212296276U true CN212296276U (en) | 2021-01-05 |
Family
ID=73939796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021010370.0U Expired - Fee Related CN212296276U (en) | 2020-06-05 | 2020-06-05 | Underground anti-reverse debris bed flushing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212296276U (en) |
-
2020
- 2020-06-05 CN CN202021010370.0U patent/CN212296276U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210105 Termination date: 20210605 |