CN113638701A - Drill rod centralizer of top drive type geothermal drilling machine - Google Patents
Drill rod centralizer of top drive type geothermal drilling machine Download PDFInfo
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- CN113638701A CN113638701A CN202111194672.7A CN202111194672A CN113638701A CN 113638701 A CN113638701 A CN 113638701A CN 202111194672 A CN202111194672 A CN 202111194672A CN 113638701 A CN113638701 A CN 113638701A
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- 238000010276 construction Methods 0.000 claims description 3
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drill rod centralizer of a top-drive geothermal drilling machine, which comprises a fixed seat, a first clamp body, a second clamp body, a first driving device and a second driving device, wherein an avoidance part for a drill rod to pass through is arranged on the fixed seat, each of the first clamp body and the second clamp body is movably arranged on the fixed seat between a righting position and an avoidance position, each of the first clamp body and the second clamp body comprises an adaptation part, the adaptation part of the first clamp body at the righting position and the adaptation part of the second clamp body at the righting position are combined to define a drill rod righting part, the drill rod righting part is adapted to the drill rod, the first driving device is connected with the first clamp body, and the second driving device is connected with the second clamp body. The drill rod centralizer of the top drive type geothermal drilling machine has the advantages of high working efficiency, good safety performance and the like.
Description
Technical Field
The invention relates to the technical field of centralizing devices, in particular to a drill rod centralizer of a top drive type drilling machine.
Background
Geothermal heat is mineral resources integrating heat collection, mine and water, and compared with energy sources such as coal and petroleum, geothermal heat is clean and can be recycled, and belongs to renewable resources. The geothermal resource has multiple functions and wide application, and not only has wide application in the fields of heating, refrigeration, bathing and the like; but also a hot brine resource and a natural fertilizer water resource which can be used for extracting industrial raw materials such as bromine, iodine, borax, sylvite, ammonium salt and the like, and simultaneously, the mineral water resource and a domestic water supply resource are precious medical hot mineral water and drinking mineral water.
With the wide utilization of geothermal resources, geothermal well drilling technology is rapidly developed. When a drill rod of a top-drive geothermal drilling machine is used for drilling a geothermal well, a drill rod centralizer is needed to centralize the drill rod so as to prevent the drill rod from inclining in the drilling process. In the related art, the drill rod centralizer of the top drive type geothermal drilling machine has the problems of low operation efficiency, high safety risk, high manufacturing cost and the like.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a drill rod centralizer of a top drive type drilling machine, so that the working efficiency is improved, and the safety risk is reduced.
A pipe centralizer for a top drive drilling rig according to an embodiment of the present invention includes.
The drill rod fixing device comprises a fixing seat, wherein an avoiding part for the drill rod to pass through is arranged on the fixing seat;
the drilling rod centering device comprises a first clamp body and a second clamp body, wherein each of the first clamp body and the second clamp body is movably arranged on a fixed seat between a centering position and an avoiding position, each of the first clamp body and the second clamp body comprises a matching part, the matching part of the first clamp body at the centering position is matched with the matching part of the second clamp body at the centering position to define a drilling rod centering part, the drilling rod centering part corresponds to the avoiding part in the vertical direction, the drilling rod centering part is matched with a drilling rod, and the matching part of the first clamp body at the avoiding position is separated from the matching part of the second clamp at the avoiding position; and
the first driving device is connected with the first clamp body so as to drive the first clamp body to move between a righting position and an avoiding position, and the second driving device is connected with the second clamp body so as to drive the second clamp body to move between the righting position and the avoiding position.
The drill rod centralizer of the top drive type drilling machine has the advantages of high working efficiency, good safety performance and the like.
In some embodiments, each of the first and second clamp bodies is swingably provided on the fixing base.
In some embodiments, the drill rod centralizer of the top drive drilling rig further comprises:
a first guide rail and a second guide rail, each of the first guide rail and the second guide rail being disposed on the holder; and
the first guide portion is arranged on the first clamp body and matched with the first guide rail so that the first clamp body can swing along the extending direction of the first guide rail, the second guide portion is arranged on the second clamp body and matched with the second guide rail so that the second clamp body can swing along the extending direction of the second guide rail.
In some embodiments, the first guide portion is a first guide wheel disposed on the first caliper body such that the first guide wheel rolls along the first guide rail;
the second guide part is a second guide wheel which is arranged on the second clamp body so that the second guide wheel can roll along the second guide rail.
In some embodiments, the fixed base has a first connecting portion and a second connecting portion opposite to each other in the first horizontal direction, one end of the first clamp body is rotatably connected to the first connecting portion, and one end of the second clamp body is rotatably connected to the second connecting portion.
In some embodiments, the first driving device includes a first fixing portion and a first telescopic portion, the first telescopic portion is movably disposed on the first fixing portion along an extending direction of the first fixing portion, one of the first fixing portion and the first telescopic portion is rotatably connected to the fixing base, and the other of the first fixing portion and the first telescopic portion is rotatably connected to the first clamp body;
the second driving device comprises a second fixing part and a second telescopic part, the second telescopic part is movably arranged on the second fixing part along the extending direction of the second fixing part, one of the second fixing part and the second telescopic part can be rotatably connected with the fixing seat, and the other of the second fixing part and the second telescopic part can be rotatably connected with the second clamp body.
In some embodiments, the first driving device is a first hydraulic cylinder, the first hydraulic cylinder includes a first cylinder body and a first piston rod, the first piston rod is movably disposed on the first cylinder body along an extending direction of the first cylinder body, the first cylinder body constitutes the first fixed portion, and the first piston rod constitutes the first telescopic portion;
the second driving device is a second hydraulic cylinder, the second hydraulic cylinder comprises a second cylinder body and a second piston rod, the second piston rod is movably arranged on the second cylinder body along the extending direction of the second cylinder body, the second cylinder body forms the second fixing portion, and the second piston rod forms the second telescopic portion.
In some embodiments, each of the mating portion of the first clamp body and the mating portion of the second clamp body includes a rounded mating surface, the rounded mating surfaces of the first clamp body in the righting position and the rounded mating surfaces of the second clamp body in the righting position cooperate to define a cylindrical pipe centralizing portion.
In some embodiments, the first clamp body comprises a first clamp body and the second clamp body comprises a second clamp body, the adapter of the first clamp body being removably connected to the first clamp body, the adapter of the second clamp body being removably connected to the second clamp body.
In some embodiments, the holder is of a frame-type construction.
Drawings
FIG. 1 is a front view of a pipe centralizer for a top drive drilling rig according to one embodiment of the present invention.
FIG. 2 is a bottom view of a pipe centralizer of a top drive drilling rig according to one embodiment of the present invention.
Fig. 3 is a view from a-a of fig. 2.
Reference numerals:
a drill rod centralizer 100;
a fixed seat 1; an avoidance portion 101; a first guide rail 102; a second guide rail 103; legs 104; a roller 105;
a first clamp body 2; a first fitting portion 201; a first caliper body 202; a first guide portion 203; a first guide wheel 2031;
a second clamp body 3; a second fitting portion 301; a second caliper body 302; a second guide portion 303; a second guide wheel 3031;
a first drive device 4; a first fixed portion 401; a first expansion portion 402;
a second drive device 5; a second fixing portion 501;
a first pin 6;
a second pin 7;
a first articulated seat 8;
a second articulated seat 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 and 3, a pipe centralizer (hereinafter, referred to as a pipe centralizer) 100 of a top drive type drilling machine according to an embodiment of the present invention includes a fixed base 1, a first clamp body 2, a second clamp body 3, a first driving device 4, and a second driving device 5.
An avoiding part 101 for the drill rod to pass through is arranged on the fixed seat 1. The relief portion 101 may be a relief groove or a relief hole.
Each of the first clamp body 2 and the second clamp body 3 is movably disposed on the fixing base 1 between a righting position and an avoiding position, and each of the first clamp body 2 and the second clamp body 3 includes an adapting portion. The adaptation portion of the first clamp body 2 is a first adaptation portion 201, the adaptation portion of the second clamp body 3 is a second adaptation portion 301, the first adaptation portion 201 of the first clamp body 2 located at the righting position and the second adaptation portion 301 of the second clamp body 3 located at the righting position are involuted to define a drill rod righting portion, the drill rod righting portion corresponds to the avoidance portion 101 in the up-down direction, the drill rod righting portion is used for being adapted to a drill rod, and the first adaptation portion 201 of the first clamp body 2 located at the avoiding position is separated from the second adaptation portion 301 of the second clamp body 3 located at the avoiding position.
The first driving device 4 is connected with the first clamp body 2 so as to drive the first clamp body 2 to move between the righting position and the avoiding position, and the second driving device 5 is connected with the second clamp body 3 so as to drive the second clamp body 3 to move between the righting position and the avoiding position.
When the drill rod centralizer 100 according to the embodiment of the invention is in operation, the first clamp body 2 is driven by the first driving device 4 to be located at the avoiding position, and the second clamp body 3 is driven by the second driving device 5 to be located at the avoiding position, so that the first adapting part 201 of the first clamp body 2 is separated from the second adapting part 301 of the second clamp body 3, and a drill rod can conveniently pass through the avoiding part 101 of the fixed seat 1 and between the first clamp body 2 and the third clamp body 3. Then, the first clamp body 2 is driven by the first driving device 4 to be located at a righting position, and the second clamp body 3 is driven by the second driving device 5 to be located at a righting position, so that the first adapting portion 201 of the first clamp body 2 and the second adapting portion 301 of the second clamp body 3 are combined to form a drill rod righting portion, and a drill rod passing through the drill rod centralizer 100 is righted by the drill rod righting portion.
Therefore, in the working process of the drill rod centralizer 100 according to the embodiment of the invention, the first clamp body 2 and the second clamp body 3 do not need to be moved manually by a constructor, so that the working efficiency is effectively improved, and safety accidents caused by accidents of the constructor in the construction process can be effectively avoided.
Therefore, the drill rod centralizer 100 according to the embodiment of the invention has the advantages of high working efficiency, good safety performance and the like.
In some embodiments, each of the first and second clamp bodies 2 and 3 is swingably provided on the fixing base 1.
For example, one end of the first clamp body 2 is hinged to the fixed seat 1 by a first pin 6, the other end of the first clamp body 2 is a free end, and the free end of the first clamp body 2 can swing around the first pin 6 under the driving of the first driving device 4, so that the first clamp body 2 moves between the righting position and the avoiding position. One end of the second clamp body 3 is hinged to the fixing seat 1 through a second pin shaft 7, the other end of the second clamp body 3 is a free end, the free end of the second clamp body 3 can swing around the second pin shaft 7 under the driving of the second driving device 5, and then the second clamp body 3 moves between a righting position and an avoiding position.
In order to make the technical solution of the present application easier to understand, the technical solution of the present application will be further described below by taking as an example that the height direction of the fixing base 1 coincides with the up-down direction as shown in fig. 1 and 3, and the arrangement direction of the first and second clamp bodies 2 and 3 coincides with the left-right direction as shown in fig. 2, and the front-back direction as shown in fig. 2 and 3.
The escape portion 101 of the fixed base 1 extends in the vertical direction. The rear end of the first clamp body 2 is hinged to the fixed seat 1 through a first pin shaft 6, the front end of the first clamp body 2 is a free end, and the free end of the first clamp body 2 can swing around the first pin shaft 6 under the driving of the first driving device 4. The front end of the second clamp body 3 is hinged to the fixed seat 1 through a second pin shaft 7, the rear end of the second clamp body 3 is a free end, and the free end of the second clamp body 3 can swing around the second pin shaft 7 under the driving of the first driving device 4. The first clamp body 2 is located at the righting position, and when the second clamp body 3 is located at the righting position, the first clamp body 2 is located on the left side of the second clamp body 3. When the first clamp body 2 swings to the left, the first clamp body 2 can swing from the righting position (as shown in fig. 2) to the avoiding position, and when the second clamp body 3 swings to the right, the second clamp body 3 can swing from the righting position to the avoiding position (as shown in fig. 2). On the contrary, when the first clamp body 2 swings to the right, the first clamp body 2 can swing from the avoiding position to the righting position, and when the second clamp body 3 swings to the left, the second clamp body 3 can swing from the avoiding position to the righting position.
In some embodiments, each of the first mating portion 201 of the first clamp body 2 and the second mating portion 301 of the second clamp body 3 comprises a circular arc shaped mating surface, the circular arc shaped mating surface of the first clamp body 2 in the righting position and the circular arc shaped mating surface of the second clamp body 3 in the righting position cooperate to define a cylindrical pipe centralizing portion.
For example, the first fitting portion 201 of the first clamp body 2 and the second fitting portion 301 of the second clamp body 3 are both semicircular sleeves, and the inner circumferential surfaces of the semicircular sleeves form semicircular arc-shaped fitting surfaces, so that the circular arc-shaped fitting surfaces of the first clamp body 2 and the second clamp body 3 form a cylindrical centering portion when facing each other.
Therefore, when the drill rod centralizing part is utilized to centralize the drill rod, the contact area between the drill rod centralizing part and the drill rod can be larger, and the centralizing effect of the drill rod centralizer 100 can be improved.
In other embodiments, the first fitting portion 201 of the first caliper body 2 and the second fitting portion 301 of the second caliper body 3 are each composed of a plurality of protrusions.
In some embodiments, the first clamp body 2 includes a first clamp body 202, the second clamp body 3 includes a second clamp body 302, the first adapter portion 201 of the first clamp body 2 is detachably connected to the first clamp body 202, and the second adapter portion 301 of the second clamp body 3 is detachably connected to the second clamp body 302.
For example, the first fitting portion 201 of the first caliper body 2 and the first caliper body 202 are connected by a bolt, and the second fitting portion 301 of the second caliper body 3 and the second caliper body 302 are connected by a bolt. Therefore, when drill rods with different radial sizes are centered, the first adapting part 201 on the first clamp body 2 and the second adapting part 301 on the second clamp body 3 can be detached, and the first adapting part 201 and the second adapting part 301 which are matched with the radial sizes of the drill rods can be installed. Thereby providing versatility to the drill rod centralizer 100. In addition, when the second adapter part 301 on the first clamp body 2 or the second adapter part 301 on the second clamp body 3 is worn seriously and needs to be replaced, the damaged adapter part can be detached and replaced by a new adapter part, so that the service life of the drill rod centralizer 100 is prolonged. Therefore, the drill rod centralizer 100 of the embodiment of the invention also has the advantages of good universality and long service life.
Optionally, a plurality of first counter bores are formed in the first adapting portion 201, a plurality of first threaded holes are formed in the first adapting portion 201 and the first clamp body 202, the plurality of first counter bores correspond to the plurality of first threaded holes one to one, the first adapting portion 201 and the first clamp body 202 are connected through a countersunk head bolt which penetrates through the first counter bore and is in threaded connection with the first threaded hole, and a countersunk head bolt head can be completely arranged in the first counter bore so as to prevent the countersunk head bolt from being exposed outside the first adapting portion 201 and influencing the righting effect. Be equipped with a plurality of second counter bores on second adaptation portion 301, be equipped with a plurality of second screw holes on second adaptation portion 301 and the second clamp body 302, a plurality of second counter bores and a plurality of second screw hole one-to-ones, second adaptation portion 301 and second clamp body 302 through pass the second counter bore and with second screw hole threaded connection's countersunk head bolted connection, the countersunk head bolt head can be arranged in the second counter bore completely to avoid the countersunk head bolt to expose in the second adaptation portion 301 outside and influence righting the effect.
In some embodiments, the fixing base 1 has a frame-type structure.
For example, the fixing base 1 includes a rectangular frame and four legs 104, the four legs 104 are all disposed at a lower portion of the rectangular frame, and the first clamp body 2 and the second clamp body 3 are both connected to the rectangular frame.
From this, fixing base 1 overall structure is simple, light in weight and structural strength are higher, when guaranteeing drilling rod centralizer 100 stability and security when centering on the drilling rod, is favorable to reducing drilling rod centralizer 100's processing cost and material cost.
Optionally, the fixing base 1 includes a plurality of rollers 105, and the plurality of rollers 105 are disposed at the bottom end of the fixing base 1.
For example, as shown in fig. 1, the lower end of each of the four legs 104 of the fixing base 1 is provided with a roller 105.
Thus, movement of the rod centralizer 100 may be achieved by rolling of the roller 105, thereby facilitating movement of the rod centralizer 100.
In some embodiments, as shown in fig. 2, the fixed base 1 has a first connecting portion and a second connecting portion oppositely arranged in a first horizontal direction, one end of the first clamp body 2 is rotatably connected with the first connecting portion, and one end of the second clamp body 3 is rotatably connected with the second connecting portion.
For example, as shown in fig. 2 and 3, the first horizontal direction coincides with the front-rear direction, the first connection portion (rear connection portion) and the second connection portion (front connection portion) are arranged opposite to each other in the front-rear direction, the rear end of the first clamp body 2 is hinged to the rear connection portion by a first pin 6, and the front end of the second clamp body 3 is hinged to the front connection portion by a second pin 7.
Alternatively, the first caliper body 2 has a first stopping portion and a second stopping portion, the second caliper body 3 has a third stopping portion and a fourth stopping portion, the first stopping portion of the first caliper body at the centering position abuts against the third stopping portion of the second caliper body 3 at the centering position, and the second stopping portion of the first caliper body at the centering position abuts against the fourth stopping portion of the second caliper body 3 at the centering position.
For example, the first stopper portion is constituted by the hinged end of the first caliper body 2, the second stopper portion is constituted by the free end of the first caliper body 2, the third stopper portion is constituted by the free end of the second caliper body 3, and the fourth stopper portion is constituted by the hinged end of the second caliper body 3.
Therefore, when the first clamp body 2 and the second clamp body 3 are both located at the righting position, the first stopping portion abuts against the third stopping portion, the second stopping portion abuts against the fourth stopping portion, and the limiting between the first clamp body 2 and the second clamp body 3 can be achieved.
As shown in fig. 2, in some embodiments, the first driving device 4 includes a first fixing portion 401 and a first telescopic portion 402, the first telescopic portion 402 is movably disposed on the first fixing portion 401 along an extending direction of the first fixing portion 401, one of the first fixing portion 401 and the first telescopic portion 402 is rotatably connected to the fixing base 1, and the other of the first fixing portion 401 and the first telescopic portion 402 is rotatably connected to the first clamp body 2.
Optionally, the fixing base 1 has a first hinge seat 8, the first fixing portion 401 is hinged to the first hinge seat 8, and the first telescopic portion 402 is hinged to the first clamp body 202.
Therefore, when the first telescopic part 402 moves along the extending direction of the first fixing part 401 to extend the first driving device 4, the first driving device 4 drives the first clamp body 2 to swing from the avoiding position to the righting position around the first hinge seat 8. When the first telescopic portion 402 moves along the extending direction of the first fixing portion 401 to shorten the first driving device 4, the first driving device 4 drives the first clamp body 2 to swing from the righting position to the avoiding position around the first hinge seat 8.
As shown in fig. 2, in some embodiments, the second driving device 5 includes a second fixing portion 501 and a second telescopic portion, the second telescopic portion is movably disposed on the second fixing portion 501 along the extending direction of the second fixing portion 501, one of the second fixing portion 501 and the second telescopic portion is rotatably connected to the fixing base 1, and the other of the second fixing portion 501 and the second telescopic portion is rotatably connected to the second clamp body 3.
Optionally, the fixed seat 1 has a second hinge seat 9, the second fixed portion 501 is hinged to the second hinge seat 9, and the second telescopic portion is hinged to the second clamp body 302.
Therefore, when the second telescopic portion moves along the extending direction of the second fixing portion 501 to extend the second driving device 5, the second driving device 5 drives the second clamp body 3 to swing from the avoiding position to the righting position around the second hinge seat 9. When the second telescopic portion moves along the extending direction of the second fixing portion 501 to shorten the second driving device 5, the second driving device 5 drives the second clamp body 3 to swing from the righting position to the avoiding position around the second hinge seat 9.
In some embodiments, the first driving device 4 is a first hydraulic cylinder, which includes a first cylinder body and a first piston rod, the first piston rod is movably disposed on the first cylinder body along an extending direction of the first cylinder body, the first cylinder body constitutes the first fixed portion 401, and the first piston rod constitutes the first telescopic portion 402.
The second driving device 5 is a second hydraulic cylinder, and the second hydraulic cylinder includes a second cylinder body and a second piston rod, the second piston rod is movably disposed on the second cylinder body along an extending direction of the second cylinder body, the second cylinder body constitutes a second fixing portion 501, and the second piston rod constitutes a second expansion portion.
In order to ensure the centering effect, the first clamp body 2 and the second clamp body 3 are usually made of steel with a relatively high density, so that the first clamp body 2 and the second clamp body 3 have relatively high mass and can be driven to swing by a relatively high force. The hydraulic cylinder can bear larger working pressure and works reliably, so that the first driving device 4 and the second driving device 5 adopt the hydraulic cylinder, and the requirements can be better met. In addition, the first driving device 4 and the second driving device 5 adopt hydraulic cylinders, so that the corresponding clamp bodies are conveniently kept at the avoiding position or the righting position.
As shown in fig. 2, in some embodiments, the pipe centralizer 100 further comprises a first guide rail 102, a second guide rail 103, a first guide 203, and a second guide 303. Each of the first guide rail 102 and the second guide rail 103 is provided on the holder 1. The first guide portion 203 is provided on the first clamp body 2, and the first guide portion 203 is engaged with the first rail 102 so that the first clamp body 2 swings in the extending direction of the first rail 102. The second guide portion 303 is provided on the second clamp body 3, and the second guide portion 303 is engaged with the second guide rail 103 so that the second clamp body 3 swings in the extending direction of the second guide rail 103.
Therefore, the first guide portion 203 is engaged with the first guide rail 102, so that the first clamp body 2 can swing along the preset path, and the second guide portion 303 is engaged with the second guide rail 103, so that the second clamp body 3 can swing along the preset path, which is beneficial to improving the reliability of the drill rod centralizer 100.
Optionally, the first connecting portion and the second rail 103 are of an integral structure, and the second connecting portion and the first rail 102 are of an integral structure.
As shown in fig. 2, in some embodiments, the first guide portion 203 is a first guide wheel 2031, and the first guide wheel 2031 is disposed on the first caliper body 2 such that the first guide wheel 2031 rolls along the first guide rail 102. The second guide portion 303 is a second guide wheel 3031, and the second guide wheel 3031 is provided on the second caliper body 3 such that the second guide wheel 3031 rolls along the second guide rail 103.
Therefore, when the first guide wheel 2031 moves along the first guide rail 102, rolling friction is generated between the first guide wheel 2031 and the first guide rail 102, and the friction resistance is small, so that the first clamp body 2 can be driven to swing with a small driving force, and the requirement for the first driving device 4 is low; when the second guide wheel 3031 moves along the second guide rail 103, rolling friction is generated between the second guide wheel 3031 and the second guide rail 103, and the friction resistance is small, so that the second clamp body 3 can be driven to swing by using a small driving force, the requirement on the second driving device 5 is low, and the manufacturing cost is reduced. In addition, the friction resistance between the first guide wheel 2031 and the first guide rail 102 and between the second guide wheel 3031 and the second guide rail 103 is small, so that the friction loss of the first guide wheel 2031, the first guide rail 102, the second guide wheel 3031 and the second guide rail 103 can be reduced, and the service life of the drill rod centralizer 100 can be prolonged.
Optionally, the first guide wheel 2031 is fixed on the first clamp body 202 by a first bearing and a first bearing seat, and the second guide wheel 3031 is fixed on the second clamp body 302 by a second bearing and a second bearing seat. Specifically, a first bearing seat is fixed on the first clamp body 202 through a bolt, an outer ring of the first bearing is connected with the first bearing seat, and an inner ring of the first bearing is connected with the first guide wheel 2031; the second bearing seat is fixed on the second clamp body 302 through bolts, the outer ring of the second bearing is connected with the second bearing seat, and the inner ring of the second bearing is connected with the second guide wheel 3031.
Referring to fig. 1 to 3, a process of using the drill rod centralizer 100 according to an embodiment of the present invention is described:
firstly, a first driving device 4 and a second driving device 5 are used for respectively driving a first clamp body 2 and a second clamp body 3 to swing to an avoidance position; the drill rod is then passed through the bypass section 101 and between the first adapter section 201 and the adapter 202.
And then, the first driving device 4 and the second driving device 5 are used for driving the first clamp body 2 and the second clamp body 3 to swing to the righting positions respectively, so that the first adapting part 201 and the adapter 202 are oppositely combined to form a drill rod righting part, and the drill rod is righted by the drill rod righting part.
When the drill rod needs to be disassembled, the first driving device 4 and the second driving device 5 are used for driving the first clamp body 2 and the second clamp body 3 to swing to the avoidance positions respectively, so that the drill rod can be conveniently pulled out of the drill rod centralizer 100.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the embodiments of the present invention have been shown and described, it is understood that the above embodiments are illustrative and not to be construed as limiting the present invention, and that various changes, modifications, substitutions and alterations in the above embodiments, which are within the scope of the present invention, may be made by those of ordinary skill in the art.
Claims (10)
1. A drill stem centralizer for a top drive geothermal drill, comprising:
The drill rod fixing device comprises a fixing seat, wherein an avoiding part for the drill rod to pass through is arranged on the fixing seat;
the drilling rod centering device comprises a first clamp body and a second clamp body, wherein each of the first clamp body and the second clamp body is movably arranged on a fixed seat between a centering position and an avoiding position, each of the first clamp body and the second clamp body comprises a matching part, the matching part of the first clamp body at the centering position is matched with the matching part of the second clamp body at the centering position to define a drilling rod centering part, the drilling rod centering part corresponds to the avoiding part in the vertical direction, the drilling rod centering part is matched with a drilling rod, and the matching part of the first clamp body at the avoiding position is separated from the matching part of the second clamp at the avoiding position; and
the first driving device is connected with the first clamp body so as to drive the first clamp body to move between a righting position and an avoiding position, and the second driving device is connected with the second clamp body so as to drive the second clamp body to move between the righting position and the avoiding position.
2. The drill rod centralizer of a top drive geothermal drill according to claim 1, wherein each of the first clamp body and the second clamp body is swingably disposed on the fixed seat.
3. The drill pipe centralizer of a top drive geothermal drill according to claim 2, further comprising:
a first guide rail and a second guide rail, each of the first guide rail and the second guide rail being disposed on the holder; and
the first guide portion is arranged on the first clamp body and matched with the first guide rail so that the first clamp body can swing along the extending direction of the first guide rail, the second guide portion is arranged on the second clamp body and matched with the second guide rail so that the second clamp body can swing along the extending direction of the second guide rail.
4. The drill rod centralizer of a top drive geothermal drill according to claim 3, wherein the first guide portion is a first guide wheel disposed on the first clamp body such that the first guide wheel rolls along the first guide rail;
The second guide part is a second guide wheel which is arranged on the second clamp body so that the second guide wheel can roll along the second guide rail.
5. The drill rod centralizer of a top drive geothermal drill according to any one of claims 2-4, wherein the fixed base has a first connecting portion and a second connecting portion disposed opposite to each other in the first horizontal direction, the first clamp body has one end rotatably connected to the first connecting portion, and the second clamp body has one end rotatably connected to the second connecting portion.
6. The drill rod centralizer of a top drive geothermal drill according to any one of claims 2-4, wherein the first drive device comprises a first fixed portion and a first telescopic portion, the first telescopic portion is movably arranged on the first fixed portion along an extension direction of the first fixed portion, one of the first fixed portion and the first telescopic portion is rotatably connected with the fixed base, and the other of the first fixed portion and the first telescopic portion is rotatably connected with the first clamp body;
the second driving device comprises a second fixing part and a second telescopic part, the second telescopic part is movably arranged on the second fixing part along the extending direction of the second fixing part, one of the second fixing part and the second telescopic part can be rotatably connected with the fixing seat, and the other of the second fixing part and the second telescopic part can be rotatably connected with the second clamp body.
7. The drill rod centralizer of a top drive geothermal drill according to claim 6, wherein the first drive device is a first hydraulic cylinder, the first hydraulic cylinder comprises a first cylinder body and a first piston rod, the first piston rod is movably arranged on the first cylinder body along the extension direction of the first cylinder body, the first cylinder body forms the first fixed part, and the first piston rod forms the first telescopic part;
the second driving device is a second hydraulic cylinder, the second hydraulic cylinder comprises a second cylinder body and a second piston rod, the second piston rod is movably arranged on the second cylinder body along the extending direction of the second cylinder body, the second cylinder body forms the second fixing portion, and the second piston rod forms the second telescopic portion.
8. The drill rod centralizer of a top drive geothermal drill according to any one of claims 1-4, wherein each of the adapter portion of the first clamp body and the adapter portion of the second clamp body comprises a radiused adapter surface, the radiused adapter surface of the first clamp body in the centralizing position and the radiused adapter surface of the second clamp body in the centralizing position cooperate to define a cylindrical drill rod centralizing portion.
9. The drill pipe centralizer of a top drive geothermal drill according to any one of claims 1-4, wherein the first clamp body comprises a first clamp body and the second clamp body comprises a second clamp body, the adapter of the first clamp body being removably coupled to the first clamp body and the adapter of the second clamp body being removably coupled to the second clamp body.
10. The drill pipe centralizer of a top drive geothermal drill according to any one of claims 1-4, wherein the fixed seat is of a frame-like construction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111194672.7A CN113638701B (en) | 2021-10-13 | 2021-10-13 | Drill rod centralizer of top drive type geothermal drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111194672.7A CN113638701B (en) | 2021-10-13 | 2021-10-13 | Drill rod centralizer of top drive type geothermal drilling machine |
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| CN113638701B CN113638701B (en) | 2022-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320193A (en) * | 2021-12-31 | 2022-04-12 | 中石化四机石油机械有限公司 | Self-adaptive centering centralizer for oil pipe of workover automation platform and use method of self-adaptive centering centralizer |
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|---|---|
| CN113638701B (en) | 2022-03-25 |
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