CN209892159U - Along with boring deep sea marine riser purger - Google Patents
Along with boring deep sea marine riser purger Download PDFInfo
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- CN209892159U CN209892159U CN201920753633.8U CN201920753633U CN209892159U CN 209892159 U CN209892159 U CN 209892159U CN 201920753633 U CN201920753633 U CN 201920753633U CN 209892159 U CN209892159 U CN 209892159U
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- sleeve
- shell
- deep sea
- rotating shaft
- drilling
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Abstract
The utility model relates to a following along with boring deep sea marine riser purger belongs to offshore oil gas well downhole tool field. The cleaner comprises a shell, a rotating shaft and a cleaning knife; a rotating shaft is arranged in the shell through a throttling sleeve; a flow limiting sleeve is arranged at the end of the bottom of the rotating shaft corresponding to the centralizing sleeve in a threaded manner; an assembly recess is arranged at the joint of the middle shell and the lower shell, a piston is arranged in the assembly recess through an inner boss and a spring, a mounting hole is formed in the bottom end of the assembly recess, and a cleaning knife is arranged in the mounting hole through the spring and an end cover; the cleaner has the characteristics of drilling, can work only by increasing the flow of drilling fluid, and does not influence the work of a lower drilling tool, so that the time for tripping the drill is saved, the cost is saved, and the cleaner has the characteristics of simple structure, convenience in disassembly and assembly and maintenance, high safety performance, and good economic benefit and popularization significance; is particularly suitable for cleaning deep sea marine risers.
Description
Technical Field
The utility model relates to a following along with boring deep sea marine riser purger belongs to offshore oil gas well downhole tool field.
Background
The marine riser is a pipe column from the bottom of the marine drilling platform to the shallow layer of the sea and is a safe channel for isolating seawater and circulating mud during drilling operation; the original oil is conveyed to a submarine pipeline during oil extraction operation. But mud, rock debris and other impurities are easily adhered to the inner wall of the water-proof pipe during the drilling operation; wax is easy to deposit in the oil extraction process, and solid hydrate is easy to form at low temperature so as to block a riser. The drilling process remains the mud, debris such as detritus can make the marine riser increase of friction if not clean in time, and this will influence the follow-up drilling string's of creeping into going into, and the marine riser is not clean enough simultaneously will influence the quality of crude oil in crude oil transportation process, consequently need clean the marine riser for guaranteeing the normal use of marine riser. However, the cleaning tool commonly used at present can only be used for pulling out the drill after drilling is finished and then extending the cleaning tool into the marine riser for cleaning, so that the efficiency is low, the time is wasted, resources such as drilling fluid and the like are wasted, and a marine riser cleaner capable of drilling is urgently needed, namely, the purposes of drilling and cleaning can be achieved.
Disclosure of Invention
The utility model aims to provide a: aiming at the problems that the existing cleaner can not enter a marine riser while drilling and the opening of a tool is not controlled, the deep sea marine riser cleaner while drilling is high in cleaning efficiency and tool reliability.
The technical scheme of the utility model is that:
the utility model provides a along with boring deep sea marine riser purger, includes casing, pivot and clean sword, and the casing comprises casing, middle casing and the casing down of mutual threaded connection, its characterized in that: a rotating shaft is arranged in the upper shell through a throttling sleeve; the outer surface of the end head at the bottom of the rotating shaft is movably provided with a righting sleeve; a flow limiting sleeve is arranged at the end of the bottom of the rotating shaft corresponding to the centralizing sleeve in a threaded manner; a positioning sleeve is arranged between the flow limiting sleeve and the inner wall of the shell through a positioning seat, an assembly cavity is arranged on the middle shell and the lower shell corresponding to the end socket at the bottom of the flow limiting sleeve, a chuck is arranged in the assembly cavity through a return spring, and the chuck is connected with the positioning seat in an embedded mode; the joint of the middle shell and the lower shell is provided with an assembling recess, a piston is arranged in the assembling recess through an inner boss and a spring, the bottom end of the assembling recess is provided with a mounting hole, and a cleaning knife is arranged in the mounting hole through the spring and an end cover.
The upper shell above the assembly recess is provided with valve holes in a radial symmetrical mode, the valve holes are communicated with the assembly recess through communicating holes, and ball valves are mounted in the valve holes through valve covers and springs.
The rotating shaft is a tubular body, and spiral grooves are symmetrically arranged on the rotating shaft.
The upper shell is provided with a pin hole corresponding to the spiral groove, a guide pin is installed in the pin hole through internal threads, and one end of the guide pin is connected with the spiral groove in a sliding embedded mode.
The throttling sleeve and the centering sleeve are respectively in threaded connection with the rotating shaft, and the throttling sleeve and the centering sleeve are respectively in sliding sealing connection with the inner wall of the shell.
The positioning sleeve is in threaded connection with the positioning seat and the righting sleeve respectively; the positioning seat and the positioning sleeve are connected with the inner wall of the shell in a sliding manner.
The flow limiting sleeve is a cup-shaped body, a flow limiting opening is formed in the bottom of the flow limiting sleeve, and a flange is arranged on the circumference of the flow limiting sleeve.
And balls are arranged between the positioning seat and the flow-limiting sleeve as well as between the positioning sleeve and the flow-limiting sleeve.
The chuck is connected with the inner wall of the assembly cavity in a sliding manner.
The cleaning knife and the piston are respectively T-shaped, and the tail end of the cleaning knife and the bottom end of the piston are respectively provided with corresponding slopes; the cleaning knife is connected with the piston through a slope surface in sliding contact.
The beneficial effects of the utility model reside in that:
the cleaning device for the deep sea riser while drilling has the characteristics of being while drilling, can work only by increasing the flow of drilling fluid, and does not influence the work of a drilling tool below, so that the time for tripping a drill is saved, the cost is saved, and the cleaning device has the characteristics of simple structure, convenience in disassembly and maintenance, high safety performance, and good economic benefit and popularization significance; is particularly suitable for cleaning deep sea marine risers.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is an enlarged view of the structure at B in FIG. 1;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 1;
fig. 4 is a schematic structural diagram of the rotating shaft of the present invention.
In the figure: 1. the device comprises a rotating shaft, 2, a cleaning knife, 3, an upper shell, 4, a middle shell, 5, a lower shell, 6, a throttling sleeve, 7, a centering sleeve, 8, a spiral groove, 9, a guide pin, 10, a flow limiting sleeve, 11, a flange, 12, a liquid flow hole, 13, a positioning seat, 14, a positioning sleeve, 15, a ball, 16, a return spring, 17, a chuck, 18, an inner boss, 19, a spring, 20, a piston, 21, an end cover, 22, a communication hole, 23, a valve cover, 24 and a ball valve.
Detailed Description
The deep sea riser cleaner while drilling comprises a shell, a rotating shaft 1 and a cleaning knife 2, wherein the shell is composed of an upper shell 3, a middle shell 4 and a lower shell 5 which are in threaded connection with each other. A rotating shaft 1 is arranged in the upper shell 5 through a throttling sleeve 6; the outer surface of the bottom end of the rotating shaft 1 is movably provided with a righting sleeve 7; the rotating shaft 1 is a tubular body, the rotating shaft 1 is symmetrically provided with spiral grooves 8, the rotating shaft 1 below the spiral grooves 8 is provided with liquid flow holes 12, and the liquid flow holes 12 are communicated with a central hole of the rotating shaft 1. The upper shell 5 is provided with a pin hole corresponding to the spiral groove 8, a guide pin 9 is installed in the pin hole through internal threads, and one end of the guide pin 9 is connected with the spiral groove 8 in a sliding embedded mode.
The throttling sleeve 6 and the centering sleeve are respectively installed at the top and the bottom of the rotating shaft 1 corresponding to threads, and the throttling sleeve 6 and the centering sleeve 7 are respectively connected with the inner wall of the shell in a sliding and sealing manner. The end of the bottom of the rotating shaft 1 corresponding to the righting sleeve 7 is provided with a flow limiting sleeve 10 through a thread; the flow limiting sleeve 10 is a cup-shaped body, a flow limiting opening is formed in the bottom of the flow limiting sleeve 10, and a flange 11 is arranged on the circumference of the flow limiting sleeve 10.
A positioning sleeve 14 is arranged between the flow limiting sleeve 10 and the inner wall of the shell through a positioning seat 13, and the positioning sleeve 14 is in threaded connection with the positioning seat 13 and the righting sleeve 7 respectively; the positioning seat 13, the positioning sleeve 14 and the inner wall of the shell are connected in a sliding mode, and the balls 15 are arranged between the positioning seat 13, the positioning sleeve 14 and the flow limiting sleeve 10, so that the flexibility of rotation between the flow limiting sleeve 10 and the positioning seat 13 and the positioning sleeve 14 is improved in work.
The middle shell 4 and the lower shell 5 corresponding to the bottom end of the flow limiting sleeve 10 are provided with assembling cavities, a chuck 17 is arranged in each assembling cavity through a return spring 16, and the chuck 17 is connected with the positioning seat 13 in an embedded mode; the chuck 17 is annular, and the chuck 17 is connected with the inner wall of the assembly cavity in a sliding way; the chuck 17 is used for axial limiting of the positioning seat 13 and the positioning sleeve 14, and assists the centering sleeve 7, the positioning seat 13 and the positioning sleeve 14 to reset under the action of the reset spring 16.
An assembly recess is arranged at the joint of the middle shell 4 and the lower shell 5, a piston 20 is arranged in the assembly recess through an inner boss 18 and a spring 19, a mounting hole is formed in the bottom end of the assembly recess, a cleaning knife 2 is arranged in the mounting hole through the spring 19 and an end cover 21, and the end cover 21 is in threaded connection with the mounting hole; the cleaning knife 2 and the piston 20 are respectively T-shaped, and the tail end of the cleaning knife 2 and the bottom end of the piston 20 are respectively provided with corresponding slopes; the cleaning blade 2 and the piston 20 are connected by a ramp surface in sliding contact.
The upper shell 3 above the assembly recess is provided with valve holes in a radial symmetrical shape, the valve holes are communicated with the assembly recess through a communication hole 22, and a ball valve 24 is arranged in each valve hole through a valve cover 23 and a spring 19. The valve cover 23 is in threaded connection with the valve hole.
In the drilling process of the deep sea riser cleaner while drilling, the drill stem is connected through the upper shell 3 and rotates along with the rotation of the drill stem. In an initial state, the inner wall of the upper shell 3 forms a seal for the liquid flow hole 12, and drilling fluid in the central hole of the rotating shaft 1 cannot flow out of the liquid flow hole 12; when the cleaning knife 2 is not needed to be opened, the cleaner is tightly attached to the outer sleeve and does not influence the drilling work, after a barrier (scaling) is generated at a certain part of a known marine riser, the discharge capacity of drilling fluid can be increased, so that the cleaning knife 2 is unfolded to scrape and remove the barrier, and the specific working process is as follows:
the flow of drilling fluid is increased and pressurized, the drilling fluid enters the cleaner from the port of the upper shell 3, the drilling fluid is subjected to pressure drop due to the conical central hole of the throttling sleeve 6, so that the rotating shaft 1 is pushed to move downwards, in the downward moving process of the rotating shaft 1, the rotating shaft 1 rotates (can only rotate 90 degrees) according to the spiral groove 8 due to the matching of the spiral groove 8 and the guide pin 9, in the process, the rotating shaft 1 pushes the centering sleeve 7, the positioning seat 13 and the positioning sleeve 14 to move downwards simultaneously, and the chuck 17 compresses the return spring 16 to store energy. In the process of rotating and moving downwards of the rotating shaft 1, the liquid flow hole 12 below the spiral groove 8 moves downwards along with the rotation of the rotating shaft 1 and gradually moves towards the valve hole port; when the return spring 16 is compressed to the limit and the guide pin 9 slides to the lowest point of the spiral groove 8, the rotating shaft 1 is indicated to rotate 90 degrees; at this time, the liquid flow hole 12 is matched with the valve hole port; the rotating shaft 1 stops rotating under the pressure of the drilling fluid and the action of the spiral groove 8.
Because the discharge amount of the flow-limiting opening of the flow-limiting sleeve 10 is smaller than the entering amount of the drilling fluid, a certain collection is formed in the rotating shaft 1, and after the drilling fluid collects a certain amount, the drilling fluid presses the ball valve 24 to retreat, so that the blocking state of the ball valve 24 on the communicating hole 22 is released; drilling fluid enters the mounting recess through the communication bore 22 and acts on the piston 20, thereby pushing the piston 20 down and compressing the spring 19.
The piston 20 moves downwards to contact with the cleaning knife 2, and the tail end of the cleaning knife 2 and the bottom end of the piston 20 are respectively provided with corresponding slopes; after the piston 20 and the cleaning knife 2 are in sliding contact through the slope, the interface pushes the cleaning knife 2 to be radially expanded, so that the cleaning knife 2 scrapes and removes obstacles (dirt), the flow and pressure of drilling fluid are reduced after the obstacles (dirt) are removed, and the cleaning knife 2, the piston 20 and the ball valve 24 are respectively reset under the action of the corresponding springs 19; meanwhile, the rotating shaft 1 is reversely rotated and reset under the action of the reset spring 16.
The cleaning device for the deep sea riser while drilling has the characteristics of being while drilling, can work only by increasing the flow of drilling fluid, and does not influence the work of a drilling tool below, so that the time for tripping a drill is saved, the cost is saved, and the cleaning device has the characteristics of simple structure, convenience in disassembly and maintenance, high safety performance, and good economic benefit and popularization significance; is particularly suitable for cleaning deep sea marine risers.
Claims (9)
1. The utility model provides a along with boring deep sea marine riser purger, includes casing, pivot (1) and clean sword (2), and the casing comprises casing (3), middle casing (4) and lower casing (5) of mutual threaded connection, its characterized in that: a rotating shaft (1) is arranged in the upper shell (3) through a throttling sleeve (6); the outer surface of the bottom end of the rotating shaft (1) is movably provided with a righting sleeve (7); a flow limiting sleeve (10) is arranged at the bottom end of the rotating shaft (1) corresponding to the centralizing sleeve (7) in a threaded manner; a positioning sleeve (14) is arranged between the flow limiting sleeve (10) and the inner wall of the shell through a positioning seat (13), an assembly cavity is arranged on the middle shell (4) and the lower shell (5) corresponding to the bottom end of the flow limiting sleeve (10), a chuck (17) is arranged in the assembly cavity through a return spring (16), and the chuck (17) is connected with the positioning seat (13) in an embedded manner; the cleaning tool is characterized in that an assembly recess is formed in the joint of the middle shell (4) and the lower shell (5), a piston (20) is installed in the assembly recess through an inner boss (18) and a spring (19), a mounting hole is formed in the bottom end of the assembly recess, and a cleaning tool (2) is installed in the mounting hole through the spring (19) and an end cover (21).
2. The deep sea riser while drilling cleaner of claim 1, wherein: valve holes are radially and symmetrically formed in the upper shell (3) above the assembly recess, the valve holes are communicated with the assembly recess through communicating holes (22), and ball valves (24) are mounted in the valve holes through valve covers (23) and springs (19); the rotating shaft (1) is a tubular body, and spiral grooves (8) are symmetrically arranged on the rotating shaft (1).
3. The deep sea riser while drilling cleaner of claim 2, wherein: the upper shell (3) is provided with a pin hole corresponding to the spiral groove (8), a guide pin (9) is installed in the pin hole through internal threads, and one end of the guide pin (9) is connected with the spiral groove (8) in a sliding embedded mode.
4. The deep sea riser while drilling cleaner of claim 1, wherein: the throttling sleeve (6) and the centering sleeve (7) are respectively in threaded connection with the rotating shaft (1), and the throttling sleeve (6) and the centering sleeve (7) are respectively in sliding sealing connection with the inner wall of the shell.
5. The deep sea riser while drilling cleaner of claim 1, wherein: the positioning sleeve (14) is in threaded connection with the positioning seat (13) and the righting sleeve (7) respectively; the positioning seat (13) and the positioning sleeve (14) are connected with the inner wall of the shell in a sliding way.
6. The deep sea riser while drilling cleaner of claim 1, wherein: the flow limiting sleeve (10) is a cup-shaped body, a flow limiting opening is formed in the bottom of the flow limiting sleeve (10), and a flange (11) is arranged on the circumference of the flow limiting sleeve (10).
7. The deep sea riser while drilling cleaner of claim 5, wherein: and balls (15) are arranged between the positioning seat (13), the positioning sleeve (14) and the flow-limiting sleeve (10).
8. The deep sea riser while drilling cleaner of claim 1, wherein: the chuck (17) is connected with the inner wall of the assembly cavity in a sliding way.
9. The deep sea riser while drilling cleaner of claim 1, wherein: the cleaning knife (2) and the piston (20) are respectively T-shaped, and the tail end of the cleaning knife (2) and the bottom end of the piston (20) are respectively provided with corresponding slopes; the cleaning knife (2) is connected with the piston (20) through a slope surface in a sliding contact manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920753633.8U CN209892159U (en) | 2019-05-24 | 2019-05-24 | Along with boring deep sea marine riser purger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920753633.8U CN209892159U (en) | 2019-05-24 | 2019-05-24 | Along with boring deep sea marine riser purger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209892159U true CN209892159U (en) | 2020-01-03 |
Family
ID=69021017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920753633.8U Expired - Fee Related CN209892159U (en) | 2019-05-24 | 2019-05-24 | Along with boring deep sea marine riser purger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209892159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392435A (en) * | 2020-11-17 | 2021-02-23 | 安徽省煤田地质局第一勘探队 | Ultrasonic vibration combined type well flushing device and well flushing method |
-
2019
- 2019-05-24 CN CN201920753633.8U patent/CN209892159U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392435A (en) * | 2020-11-17 | 2021-02-23 | 安徽省煤田地质局第一勘探队 | Ultrasonic vibration combined type well flushing device and well flushing method |
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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: 20200103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |