CN110748323B - Well wall mud removing device - Google Patents
Well wall mud removing device Download PDFInfo
- Publication number
- CN110748323B CN110748323B CN201810818914.7A CN201810818914A CN110748323B CN 110748323 B CN110748323 B CN 110748323B CN 201810818914 A CN201810818914 A CN 201810818914A CN 110748323 B CN110748323 B CN 110748323B
- Authority
- CN
- China
- Prior art keywords
- wheel
- outer ring
- fit
- reversing
- radial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007790 scraping Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 230000001174 ascending effect Effects 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 4
- 239000004568 cement Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
- E21B37/04—Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a well wall mud removing device which takes the pushing force of annular fluid as power, can automatically reciprocate along a pipe fitting in the annular space outside the pipe fitting and can rotationally scrape and clean the outer wall of the pipe fitting and the well wall. The device mainly comprises a body, an outer ring, a travelling mechanism and a reversing mechanism; the outer ring and the body form rotary fit, the outer ring and the travelling mechanism form gear transmission, the travelling mechanism is a two-position swinging mechanism, the travelling mechanism and the reversing rod form friction rolling fit at the same time, and the reversing rod and the body form axial sliding fit; the body is annular and provided with an axial hole and a radial hole, and the axial hole and the radial hole are through holes; the outer ring is provided with a scraping plate which is in the shape of a vortex blade. The invention relates to a well wall mud removing device, which comprises a driving wheel, a reciprocating motion, an automatic reversing mechanism and a well wall cleaning mechanism.
Description
Technical Field
The invention relates to a pipe wall and well wall mud removing device in the field of petroleum drilling, in particular to a well wall mud removing device.
Background
In the well cementation process, mud cake media and impurities prevent cement paste from fully contacting the outer wall of the casing and the well wall, so that the cementing quality of the first interface and the second interface is poor. Poor quality of well cementation can cause channeling of water, gas and liquid among strata, confusion of stratum pressure, and finally, the productivity of an oil well is reduced, and the yield of a temporary well or even the whole block is affected. The prior mode mainly uses a pre-liquid or circularly adjusts the slurry performance, and has poor effect on cleaning mud cakes. At present, no mechanical equipment and no device for scraping mud cakes during well cementation exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a well wall mud removing device. The device is in the circulation mud, inject cement slurry and displace the in-process, with the fluid that returns up in the annular space between sleeve pipe and wall of a well as power, realize automatic reversing on the sleeve pipe, reciprocating motion from top to bottom, scrape the clearance repeatedly to wall of a well and sleeve pipe outer wall, clear away the mud cake, make the cement slurry fully contact with sleeve pipe wall, wall of a well, solved the negative influence of mud cake medium to the well cementation quality, be favorable to improving first, second interface cementation quality and cement sheath self intensity.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
The well wall mud removing device mainly comprises a body, an outer ring, a reversing mechanism and a travelling mechanism; the body is of a hollow cylinder structure, one or more axial holes are axially and uniformly distributed on the inner wall of the cylinder, radial holes are formed in the body corresponding to the outer side of each axial hole, and the axial holes and the radial holes are of through hole structures; the outer ring is sleeved outside the body, the inner wall of the outer ring is provided with inner teeth and is in rotary fit with the body, a mud scraping plate extends out of the outer ring, and the mud scraping plate is in a shape of a vortex blade; the travelling mechanism is arranged in a radial hole of the body and is a two-position swinging mechanism and comprises a transverse wheel, a vertical wheel, a swinging arm, a downlink wheel and an uplink wheel; the vertical wheel is connected in the radial hole of the body through a central shaft, the descending wheel and the ascending wheel form linkage fit with each other through a driving belt A and a driving belt B, the swinging arm is symmetrical relative to the swinging axle center of the swinging arm, the vertical wheel and the descending wheel form linkage fit with each other through a same-direction driving belt, and the descending wheel and the ascending wheel form linkage fit with each other through a reverse driving belt; the reversing mechanism comprises a reversing rod penetrating through an axial hole of the body, and an upper platform and a lower platform fixed at the middle section of the reversing rod, wherein the reversing rod and the axial hole of the body form axial sliding fit, the upper platform and the lower platform are arranged in radial holes of the body at intervals, are respectively positioned above and below the downlink wheel and are distributed on two sides of a swinging center shaft of the swing arm; the descending wheels and the ascending wheels of the travelling mechanism and the upper platform and the lower platform of the reversing mechanism form interval friction rolling fit, and when the swing arm swings in two positions, the descending wheels and the ascending wheels alternately extend out of the inner circle of the body.
The above scheme further includes:
The top end of the limiting rod is hinged below the lower platform, the limiting rod is elastic, the lower end of the limiting rod is tilted towards the lower wheel shaft, the limiting rod extends downwards along the axial hole and forms spacing limiting fit with the lower wheel shaft of the ascending wheel.
A spring is arranged between the limiting rod and the lower platform, and saw teeth connected with the lower platform in a clamping mode are arranged at the bottom end of the limiting rod.
A torsion spring is arranged between the swing arm and the middle shaft.
The driving belt B is installed in a shape like a Chinese character 'ji', and the driving direction is opposite to that of the driving belt A.
And a limiting block A and a limiting block B are also fixed on the inner wall of the radial hole, are arranged in mirror symmetry relative to the center shaft and form limiting fit with the swing arm.
The mud scraping plates on the outer ring are a plurality of groups uniformly distributed along the circumference, and the groups comprise outer mud scraping plates which extend outwards in the radial direction and inner mud scraping plates which extend inwards in the radial direction.
The opposite surfaces of the upper platform and the lower platform are provided with dense tooth-shaped friction layers, and the surfaces of the corresponding uplink wheel and the corresponding downlink wheel are also provided with dense tooth-shaped friction layers.
A bearing is arranged between the body and the outer ring.
Compared with the prior art, the invention has the beneficial effects that: the method comprises the steps of (1) arranging driving wheels on the ascending and descending of a well wall mud removing device; (2) Automatically running underground by using the circulating fluid as power; (3) Reciprocating up and down, automatically reversing, and repeatedly cleaning the outer wall and the well wall of the sleeve; (4) The well wall can also be the inner wall of the outer casing, and the invention can be used for cleaning the space between two casings.
Drawings
FIG. 1 is a top view of a borehole wall mud removal apparatus.
Fig. 2 is a cross-sectional view taken along section A-A of fig. 1.
Fig. 3 is a cross-sectional view taken along section B-B of fig. 2.
Fig. 4 is a cross-sectional view taken along section C-C of fig. 3.
Fig. 5 is a front view of a part of the structure of a travelling mechanism of the borehole wall mud removing device.
Fig. 6 is a right side view of a part of the structure of a travelling mechanism of the borehole wall mud removing device.
Fig. 7 is a state diagram of the borehole wall mud removal device when it moves upward.
FIG. 8 is a state diagram of the borehole wall mud removal apparatus as it reaches the upper collar.
Fig. 9 is a state diagram of the commutation of the borehole wall mud removal device at the upper collar.
Fig. 10 is a state diagram of the commutation of the borehole wall mud removal device at the lower collar.
Fig. 11 is a front view of the reversing mechanism of the borehole wall mud removal device.
FIG. 12 is a right side view of the reversing mechanism of the borehole wall mud removal device
Fig. 13 is a perspective side view of the reversing mechanism of the borehole wall mud removal device.
The marks in the figure: 1. the body, 2, outer mud scraping plate, 3, axial hole, 4, bearing, 5, outer ring, 6, reversing lever, 7, descending wheel, 8, swing arm, 9, stopper A,10, stopper B,11, axis, 12, inner mud scraping plate, 13, mandrel, 14, sleeve, 15, lower platform, 16, boss, 17, upper platform, 18, torsion spring, 19, drive belt A,20, vertical wheel, 21, drive belt B,22, transverse wheel, 23, ascending wheel, 24, lower wheel axle, 25, stop lever, 26, radial hole, 27, coupling, 28, spring.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention relates to a well wall mud removing device which takes the pushing force of annular fluid as power, can automatically reciprocate along a pipe fitting in the annular space outside the pipe fitting and can rotationally scrape and clean the outer wall of the pipe fitting and the well wall. The upper and lower sides of the well wall mud removing device are provided with driving wheels, the driving wheels reciprocate up and down, the automatic reversing is carried out, and the outer wall of the sleeve and the well wall are cleaned repeatedly.
Referring to fig. 1, a borehole wall mud removing device mainly comprises a body 1, an outer ring 5, a reversing mechanism and a travelling mechanism.
Referring to fig. 2, the body 1 is in a hollow cylinder structure, 2 or 4 axial holes 3 are uniformly distributed on the inner wall of the cylinder in the axial direction, radial holes 26 are arranged in the body 1 corresponding to the outer side of each axial hole 3, and the axial holes 3 and the radial holes 26 are all in through hole structures.
Referring to fig. 1-4, the outer ring 5 is sleeved outside the body, the inner wall of the outer ring 5 is provided with inner teeth and is in rotary fit with the body 1, a mud scraping plate extends out of the outer ring 5, and the mud scraping plate is in a shape of a turbo blade.
Referring to fig. 3-6, the travelling mechanism is arranged in a radial hole 26 of the body 1, and is a two-position swinging mechanism, comprising a transverse wheel 22, a vertical wheel 20, a swinging arm 8, a descending wheel 7 and an ascending wheel 23. The transverse wheel 22 is provided with two layers of external teeth, and the transverse wheel 22 is connected in a radial hole 26 of the body 1 through a vertical rotating shaft. The vertical wheel 20 has a combined structure of conical teeth and a belt pulley, and the vertical wheel 20 is connected in a radial hole 26 of the body 1 through a horizontal spindle 13. The outer external teeth of the transverse wheel 22 and the inner teeth of the outer ring 5 form gear rotation transmission fit, and the inner external teeth of the transverse wheel 22 and the conical teeth on the vertical wheel 20 form right-angle gear transmission fit. The descending wheel 7 and the ascending wheel 23 are respectively connected with the upper end and the lower end of the swing arm 8 through upper and lower wheel shafts, and the belt pulley of the vertical wheel 20 is respectively in linkage fit with the upper wheel shaft of the descending wheel 7 and the lower wheel shaft 24 of the ascending wheel 23 through a driving belt A19 and a driving belt B21. The swing arm 8 is rotatably connected in a radial hole 26 of the body 1 by a central shaft 11. The descending wheel 7 and the ascending wheel 23 are symmetrical relative to the swing axis of the swing arm 8, the vertical wheel 20 and the descending wheel 7 form the same-direction transmission belt linkage fit, and the vertical wheel 20 and the ascending wheel 23 form the reverse transmission belt linkage fit.
Referring to fig. 11-13, the reversing mechanism comprises a reversing rod 6 penetrating through the axial hole 3 of the body, an upper platform 17 and a lower platform 15 fixed at the middle section of the reversing rod 6, wherein the reversing rod 6 and the axial hole 3 of the body 1 form an axial sliding fit, the upper platform 17 and the lower platform 15 are arranged in a radial hole 26 of the body 1 at intervals, are respectively positioned above and below the descending wheel 7, and are distributed on two sides of a swinging center shaft of the swing arm 8.
The descending wheels 7 and the ascending wheels 23 of the travelling mechanism and the upper platform 17 and the lower platform 15 of the reversing mechanism form interval friction rolling fit, and when the swing arm 8 swings in two positions, the descending wheels 7 and the ascending wheels 23 alternately extend out of the inner circle of the body 1.
Based on the above embodiments:
further, referring to fig. 7-10 and 12, the device further comprises a limiting rod 25 with a top end hinged below the lower platform 15, wherein the limiting rod 25 has elasticity, the lower end of the limiting rod is tilted towards the lower wheel axle 24, and the limiting rod 25 extends downwards along the axial hole 3 and forms spacing limiting fit with the lower wheel axle 24 of the ascending wheel 23.
Further, a spring 28 is arranged between the limit rod 25 and the lower platform 15, and the bottom end of the limit rod 25 is provided with saw teeth which are clamped with the lower platform 15.
Further, referring to fig. 6, a torsion spring 18 and a boss 16 are provided between the swing arm 8 and the center shaft 11. The driving belt B21 is installed in a 8 shape, and the driving direction is opposite to that of the driving belt A19.
Referring to fig. 7, a limiting block A9 and a limiting block B10 are also fixed on the inner wall of the radial hole 26, and the limiting block A9 and the limiting block B10 are arranged in mirror symmetry relative to the central shaft 11 and form limiting fit with the swing arm 8.
Referring to fig. 2, the number of the blades on the outer ring 5 is 2 to 8 (4 are preferred in this embodiment) uniformly distributed circumferentially, and the number of the blades is divided into an outer blade 2 extending radially outwardly and an inner blade 12 extending radially inwardly.
Further, the opposite surfaces of the upper platform 17 and the lower platform 15 are provided with dense tooth friction layers, and the surfaces of the corresponding up-running wheel 23 and down-running wheel 7 are also provided with dense tooth friction layers.
Exemplary embodiments of the invention
Referring to fig. 1-13, the borehole wall mud removing device mainly comprises a body 1, an outer ring 5, a travelling mechanism and a reversing mechanism (reversing rod 6). The outer ring 5 is connected with the body 1 through a bearing 4 and forms rotary fit, the outer ring 5 forms gear transmission with a travelling mechanism through a transverse wheel 22, the travelling mechanism forms two-position swing fit with the body 1, the travelling mechanism simultaneously forms friction rolling fit with a reversing rod 6, and the reversing rod 6 forms axial sliding fit with the body 1.
The body 1 is annular, and is provided with an axial hole 3 and a radial hole 26, and the axial hole 3 and the radial hole 26 are through holes. The outer ring 5 has internal teeth, the transverse wheel 22 has two layers of external teeth, and the outer ring 5 and the transverse wheel 22 form gear transmission. The outer ring 5 is radially provided with an outer scraping plate 2 extending outwards and an inner scraping plate 12 extending inwards, and the outer scraping plate 2 and the inner scraping plate 12 are in the shape of a turbine blade and can drive the outer ring 5 to rotate when fluid passes through. The number of the mud scraping plates on the outer ring 5 is four, and the number of the radial holes 26, the axial holes 3, the travelling mechanism and the reversing rod 6 are four.
The running gear is mounted in the radial hole 26, and referring to fig. 5 and 6, the running gear includes a transverse wheel 22, a vertical wheel 20, a swing arm 8, a descending wheel 7, an ascending wheel 23, a center shaft 11, a spindle 13, a transmission belt a19 and a transmission belt B21. The transverse wheel 22 and the conical teeth on the vertical wheel 20 form right-angle gear transmission, the transverse wheel 22 is fixed on the body 1 through the spindle 13, and the transverse wheel 22 and the spindle 13 form rotary fit. The vertical wheel 20 is provided with a driving belt A19 and a driving belt B21, the vertical wheel 20 drives the descending wheel 7 to rotate through the driving belt A19, and the vertical wheel 20 drives the ascending wheel 23 to rotate through the driving belt B21. The driving belt B21 is installed in a 8 shape, the driving direction is opposite to that of the driving belt A19, and the rotating shaft of the ascending wheel 23 is a lower wheel shaft 24. The descending wheel 7 is above the ascending wheel 23, and the descending wheel 7 and the ascending wheel 23 are respectively in rotary fit with the swing arm 8. The middle shaft 11 is fixed on the body 1, the middle part of the swing arm 8 is connected with the middle shaft 11, a boss 16 is arranged below the middle shaft 11, one end of the torsion spring 18 is fixed on the boss 16, and the other end is fixed above the swing arm 8. Referring to fig. 2, a limiting block A9 and a limiting block B10 are also fixed on the inner wall of the radial hole 26, and the limiting block A9 and the limiting block B10 are in mirror image opposition relative to the central shaft 11, so as to limit the swing arm 8 to swing within a certain angle. The extension of the torsion spring 18 at the position of the limiting block of the swing arm 8 is shortest, and the swing of the swing arm 8 belongs to a two-position limiting state. And in the position of the limiting block A9 and the limiting block B10, the descending wheels 7 and the ascending wheels 23 alternately extend out of the inner circle of the body 1 and are pressed on the outer wall of the sleeve 14 under the action of the torsion spring 18.
Referring to fig. 7 to 13, the reversing lever 6 is installed in the radial hole 26, the reversing lever 6 has a rod shape, and upper and lower ends of the reversing lever 6 pass through the axial hole 3 and protrude from upper and lower surfaces of the body 1, respectively. The middle part of the reversing lever 6 is provided with an upper platform 17 and a lower platform 15, the upper platform 17 and the lower platform 15 are vertically spaced at a certain distance, are respectively positioned above and below the descending wheel 7, and are distributed on two sides of the middle shaft 11.
A limit rod 25 with a pendulum structure is arranged below the lower platform 15, and the top end of the limit rod 25 is connected below the lower platform 15 and extends downwards from the axial hole 3. A spring 28 is arranged between the limiting rod 25 and the lower platform 15, the lower end of the limiting rod 25 slightly tilts towards the lower wheel axle 24 under the action of the spring 28, and the bottom end of the limiting rod 25 is in a zigzag shape. The opposite side of the upper platform 17 and the lower platform 15 is provided with an adhesion layer with high friction resistance.
Referring to fig. 7, the swing arm 8 is in the position of the stopper B10, and the up-going wheel 23 is pressed against the outer wall of the sleeve 14. When the annular fluid flows through the mud scraping plate, the outer ring 5 is driven to rotate, the vertical wheel 20 is driven to rotate through the transverse wheel 22, the transmission belt B21 drives the lower wheel shaft 24 and the uplink wheel 23 to rotate anticlockwise, and the body 1 is enabled to ascend along the sleeve 14.
Referring to fig. 8, the top end of the reversing lever 6 reaches the collar 27, the body 1 continues to move upward, and the descending wheel 7 touches the upper platform 17 above. Because the winding method of the driving belt A19 and the driving belt B is opposite, the steering direction of the descending wheel 7 is opposite to that of the ascending wheel 23, the descending wheel 7 rolls clockwise on the upper platform 17, moves towards the sleeve 14 and drives the swing arm 8 to swing towards the limiting block A9.
Referring to fig. 9, when the swing arm 8 passes over the central axis, the descending wheel 7 is separated from the upper platform 17 and presses against the sleeve 14, the ascending wheel 23 is separated from the sleeve 14, and the body 1 moves downward under the driving of the descending wheel 7.
Referring to fig. 10, the bottom end of the reversing rod 6 reaches the lower coupling, the body 1 continues to descend, the limiting rod 25 ascends along with the reversing rod 6, and when the descending wheel 7 touches the lower platform 15 below, the bottom end of the limiting rod 25 is clamped at the bottom of the radial hole 26 to limit the reversing rod 6. The descending wheel 7 rolls along the lower platform 15 and is separated from the sleeve 14, so that the swing arm 8 is reversed to the position of the limiting block B10, the ascending wheel 23 is pressed on the sleeve 14, meanwhile, the lower wheel shaft 24 presses the limiting rod 25 towards the direction of the sleeve 14, the bottom of the limiting rod 25 is released, and the limiting of the reversing rod 6 is released.
The function of the stop lever 25 is to maintain a certain pressure and friction when the descent wheel 7 rolls on the lower platform 15. In the position of fig. 10, when the downlink wheel 7 starts to roll outwards along the lower platform 15, as the swing arm 8 has not swung through the central axis just after the sleeve 14 is separated, the body 1 is pushed by the fluid returned from the annulus to move upwards, so that the downlink wheel 7 is separated from the lower platform upwards at the moment, the pressure on the lower platform 15 is lost, the friction force is lost, the downlink wheel 7 cannot run through the lower platform 15, the swing arm 8 cannot complete reversing, and the reversing and upward acting force is converted to the uplink wheel 23.
Claims (10)
1. The well wall mud removing device is characterized by mainly comprising a body (1), an outer ring (5), a reversing mechanism and a travelling mechanism; the body (1) is of a hollow cylinder structure, more than 2 or more than 2 axial holes (3) are axially uniformly distributed on the inner wall of the cylinder, radial holes (26) are formed in the body (1) corresponding to the outer side of each axial hole (3), and the axial holes (3) and the radial holes (26) are of through hole structures; the outer ring (5) is sleeved outside the body, inner teeth are arranged on the inner wall of the outer ring (5) and form rotary fit with the body (1), a scraping plate extends out of the outer ring (5), and the scraping plate is in a shape of a vortex blade; the travelling mechanism is arranged in a radial hole (26) of the body (1), is a two-position swinging mechanism and comprises a transverse wheel (22), a vertical wheel (20), a swinging arm (8), a downlink wheel (7) and an uplink wheel (23); the horizontal wheel (22) is provided with two layers of external teeth, the horizontal wheel (22) is connected in a radial hole (26) of the body (1) through a vertical rotating shaft, the vertical wheel (20) is provided with a combined structure of conical teeth and a belt pulley, the vertical wheel (20) is connected in the radial hole (26) of the body (1) through a horizontal spindle (13), the external teeth of the outer layer of the horizontal wheel (22) are in gear rotation transmission fit with the internal teeth of the outer ring (5), the external teeth of the inner layer of the horizontal wheel (22) and the conical teeth on the vertical wheel (20) form right-angle gear transmission fit, the downlink wheel (7) and the uplink wheel (23) are respectively connected at the upper end and the lower end of the swing arm (8) through an upper wheel shaft and a lower wheel shaft, the belt pulley of the vertical wheel (20) is respectively in linkage fit with the upper wheel shaft (24) of the downlink wheel (7) through a transmission belt A (19) and a transmission belt B (21), the swing arm (8) is rotationally connected in the radial hole (26) of the body (1) through a central shaft (11), and the downlink wheel (7) and the uplink wheel (23) are in opposite linkage fit with the vertical belt (23) and form opposite linkage with the vertical belt (20); the reversing mechanism comprises a reversing rod (6) penetrating through the axial hole (3) of the body, and an upper platform (17) and a lower platform (15) fixed at the middle section of the reversing rod (6), wherein the reversing rod (6) and the axial hole (3) of the body (1) form axial sliding fit, the upper platform (17) and the lower platform (15) are arranged in radial holes (26) of the body (1) at intervals, are respectively positioned above and below the descending wheel (7) and are distributed on two sides of a swinging center shaft of the swinging arm (8); the descending wheels (7) and the ascending wheels (23) of the travelling mechanism are in friction rolling fit with the upper platform (17) and the lower platform (15) of the reversing mechanism at intervals, and when the swing arm (8) swings in two positions, the descending wheels (7) and the ascending wheels (23) alternately extend out of the inner circle of the body (1).
2. A borehole wall mud removal apparatus as set forth in claim 1 wherein: the device also comprises a limiting rod (25) with the top end hinged below the lower platform (15), wherein the limiting rod (25) is elastic, the lower end of the limiting rod is tilted towards the lower wheel shaft (24), and the limiting rod (25) extends downwards along the axial hole (3) and forms spacing limiting fit with the lower wheel shaft (24) of the ascending wheel (23).
3. A borehole wall mud removal apparatus as set forth in claim 2 wherein: a spring (28) is arranged between the limiting rod (25) and the lower platform (15), and saw teeth which are clamped with the lower platform (15) are arranged at the bottom end of the limiting rod (25).
4. A borehole wall mud removal apparatus according to claim 1 or 2 or 3, wherein: a torsion spring (18) is arranged between the swing arm (8) and the middle shaft (11).
5. A borehole wall mud removal apparatus according to claim 1 or 2 or 3, wherein: the driving belt B (21) is installed in a 8 shape, and the driving direction is opposite to that of the driving belt A (19).
6. A borehole wall mud removal apparatus according to claim 1 or 2 or 3, wherein: and a limiting block A (9) and a limiting block B (10) are also fixed on the inner wall of the radial hole (26), and the limiting block A (9) and the limiting block B (10) are arranged in mirror symmetry relative to the central shaft (11) and form limiting fit with the swing arm (8).
7. A borehole wall mud removal apparatus according to claim 1 or 2 or 3, wherein: the mud scraping plates on the outer ring (5) are a plurality of groups uniformly distributed along the circumference, and the groups comprise outer mud scraping plates (2) which extend outwards in the radial direction and inner mud scraping plates (12) which extend inwards in the radial direction.
8. A borehole wall mud removal apparatus according to claim 1 or 2 or 3, wherein: the opposite surfaces of the upper platform (17) and the lower platform (15) are provided with dense tooth-shaped friction layers, and the surfaces of the corresponding up-running wheel (23) and down-running wheel (7) are also provided with dense tooth-shaped friction layers.
9. A borehole wall mud removal apparatus according to claim 1 or 2 or 3, wherein: a bearing (4) is arranged between the body (1) and the outer ring (5).
10. A borehole wall mud removal apparatus as set forth in claim 4 wherein: the driving belt B (21) is installed in a 8 shape, and the driving direction is opposite to that of the driving belt A (19); a limiting block A (9) and a limiting block B (10) are also fixed on the inner wall of the radial hole (26), and the limiting block A (9) and the limiting block B (10) are arranged in mirror symmetry relative to the center shaft (11) and form limiting fit with the swing arm (8); the mud scraping plates on the outer ring (5) are a plurality of groups which are uniformly distributed along the circumference, the components are an outer scraping plate (2) which extends outwards in a radial direction and an inner scraping plate (12) which extends inwards in a radial direction; the opposite surfaces of the upper platform (17) and the lower platform (15) are provided with dense tooth-shaped friction layers, and the surfaces of the corresponding up-running wheel (23) and down-running wheel (7) are also provided with dense tooth-shaped friction layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818914.7A CN110748323B (en) | 2018-07-24 | 2018-07-24 | Well wall mud removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818914.7A CN110748323B (en) | 2018-07-24 | 2018-07-24 | Well wall mud removing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110748323A CN110748323A (en) | 2020-02-04 |
| CN110748323B true CN110748323B (en) | 2024-07-26 |
Family
ID=69275408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810818914.7A Active CN110748323B (en) | 2018-07-24 | 2018-07-24 | Well wall mud removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110748323B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209586332U (en) * | 2018-07-24 | 2019-11-05 | 中石化石油工程技术服务有限公司 | A kind of borehole wall desludging device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558738A (en) * | 1984-04-02 | 1985-12-17 | Howard Sr Robert G | Oil well casing scraper |
| CN2252884Y (en) * | 1996-04-24 | 1997-04-23 | 张志武 | Automatic paraffin scraper of oil well |
| CN203847062U (en) * | 2014-05-27 | 2014-09-24 | 台州市黄岩双通石化机械有限公司 | Turbine type downhole vibration well cementation device |
| CN204344075U (en) * | 2014-09-11 | 2015-05-20 | 中国石油化工股份有限公司 | Insulated tubing device for dedusting inner wall |
| CN105064952A (en) * | 2015-09-09 | 2015-11-18 | 长江大学 | Well cementation fluid rotary flow generating device |
-
2018
- 2018-07-24 CN CN201810818914.7A patent/CN110748323B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209586332U (en) * | 2018-07-24 | 2019-11-05 | 中石化石油工程技术服务有限公司 | A kind of borehole wall desludging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110748323A (en) | 2020-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106180014B (en) | A kind of lamp stand automatic cleaning apparatus and method | |
| GB2165283A (en) | Apparatus and method for driving casing or conductor pipe | |
| BR0011453B1 (en) | method and apparatus for displacing drilling fluids with completion and scrutiny fluids, and for tubular cleaning members. | |
| CN111551395A (en) | Sampling device for soil remediation | |
| CN107165577A (en) | Screw underbalance pulse hydroscillator | |
| CN111206910A (en) | Hydraulic jet staged fracturing tool for horizontal well | |
| CA2858548C (en) | Resonant extractor system and method | |
| CN110748323B (en) | Well wall mud removing device | |
| CN107042461A (en) | Automatic rust removing device inside oil drill rocker | |
| CN104863497B (en) | A kind of drill bit spiral percussion mechanism | |
| CN107724998B (en) | Telescopic controllable sleeve cleaning tool for scraper | |
| US1402786A (en) | Well-cleaning device | |
| CN112240179B (en) | Novel hydraulic jet blockage removing device | |
| CN211666691U (en) | Automatic mud scraper of sleeve pipe | |
| CN215369732U (en) | Oil recovery well washing device for oil recovery in oil field | |
| CN209875056U (en) | Rotary drilling rig with cleaning mechanism | |
| CN110541681A (en) | Intelligent rock debris cleaning device | |
| CN214997479U (en) | Highway bridge construction drilling equipment | |
| CN208996625U (en) | A kind of sealed power drilling tool impact transmission shaft | |
| CN209586332U (en) | A kind of borehole wall desludging device | |
| CN205135489U (en) | Coiled tubing radial drilling is with sitting hanging commutator | |
| CN111021991B (en) | Online cleaning device for oil pumping pipe of vertical well | |
| CN212359655U (en) | Combined type rotational flow hydraulic centralizer | |
| CN109538160B (en) | Hydraulic drive radial vibration well cementation nipple and use method | |
| CN206174864U (en) | Rotatory STREAMING axial impact drilling tool of joining in marriage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |