CN113107394A

CN113107394A - Slider type centralizer

Info

Publication number: CN113107394A
Application number: CN202110561847.7A
Authority: CN
Inventors: 吴帮民
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-23
Filing date: 2021-05-23
Publication date: 2021-07-13

Abstract

The invention discloses a slider type centralizer, which relates to the technical field of well cementing tools and comprises a sleeve and an oil pipe, wherein fixed bases are fixedly arranged on the outer portion of the sleeve in an evenly distributed mode, movable shafts are fixedly sleeved at two ends of the sleeve, a movable plate is movably sleeved in the fixed base, a centralizing spring is fixedly connected between the fixed base and the movable plate, and a sliding base is fixedly arranged on the outer portion of the movable plate. This slider formula centralizer, cooperation through roller and connecting axle and sliding base is used, make this slider formula centralizer can be at sliding base's inside activity suit connecting axle, and at the fixed suit roller of the outside of connecting axle, make the surface of roller extend to sliding base's outside, then make the surface of roller can contact with the oil well wall of a well, oil pipe drives the centralizer and descends or when ascending, thereby the roller can roll under the effect of connecting axle and reduce the frictional force between centralizer and the wall of a well, the operating personnel of being convenient for operates.

Description

Slider type centralizer

Technical Field

The invention relates to the technical field of well cementation tools, in particular to a sliding block type centralizer.

Background

The centralizer belongs to a well cementing tool, is simple to manufacture, attractive in structure, firm and durable, has large centralizing force, overcomes the defect that the existing welded centralizer is easy to be detached from welding, and is a centralizer capable of ensuring the well drilling and cementing quality.

At present the centralizer commonly used mainly includes ball formula and slider formula two kinds, but common slider formula centralizer still has certain not enough when using in the market, at first, common slider formula centralizer is great at the friction of during operation between the oil well wall of a well, be unfavorable for oil pipe's lift operation, secondly, the relation of connection between common slider formula centralizer and the oil pipe is comparatively complicated, inconvenient installation, and common slider formula centralizer remains the reinforcing to oil pipe's righting effect, for this reason, we have designed a slider formula centralizer and have solved above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a slider type centralizer, which solves the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a slider formula centralizer, includes sleeve pipe and oil pipe, sheathed tube outside fixed mounting has evenly distributed's unable adjustment base, and the fixed cover in sheathed tube both ends has the loose axle, unable adjustment base's inside movable sleeve is equipped with the fly leaf, and fixedly connected with between unable adjustment base and the fly leaf rights the spring, the outside fixed mounting of fly leaf has sliding base, sliding base's inside movable sleeve is equipped with evenly distributed's connecting axle, the fixed cover in outside of connecting axle is equipped with the roller, the outside movable sleeve of loose axle is equipped with embedded splint and cup joint formula splint, embedded splint all are provided with evenly distributed's fixed plate with the inside of cup joint formula splint.

Preferably, the external fixed mounting of muff-coupling splint has the bell and spigot joint and cup joints the piece, the outside movable sleeve of cup joint piece is equipped with the joint post, the external fixed mounting of embedded splint has the joint to connect.

Preferably, the distance value between the sleeve joint and the sleeve joint block is matched with the size value of the joint, the fixing hole matched with the joint column is formed in the outer portion of the joint, and the clamping groove matched with the joint column is formed in the outer portion of the sleeve joint.

Preferably, the fixed cover in outside of joint post is equipped with the baffle, the inside of cup jointing piece is seted up with baffle assorted movable slot, and fixedly connected with joint spring between cup jointing piece and the baffle.

Preferably, the embedded clamping plate and the sleeved clamping plate are both made of soft iron sheets, the sleeve is made of metal, and waterproof paint is coated outside the sleeve.

Preferably, the fixed slots are uniformly distributed on the outer portion of the oil pipe, and the fixed plates are matched with the fixed slots.

Preferably, the outer surface of the roller extends to the outside of the sliding base, and the roller is made of hard rubber.

Preferably, the fixed base is internally provided with a sliding chute matched with the movable plate, and the top of the fixed base is provided with a limiting plate matched with the movable plate.

The invention provides a sliding block type centralizer, which has the following beneficial effects:

1. this slider formula centralizer, cooperation through roller and connecting axle and sliding base is used, make this slider formula centralizer can be at sliding base's inside activity suit connecting axle, and at the fixed suit roller of the outside of connecting axle, make the surface of roller extend to sliding base's outside, then make the surface of roller can contact with the oil well wall of a well, oil pipe drives the centralizer and descends or when ascending, thereby the roller can roll under the effect of connecting axle and reduce the frictional force between centralizer and the wall of a well, the operating personnel of being convenient for operates.

2. This slider formula centralizer, use through joint post and joint spring and joint and the cooperation that cup joints, make this slider formula centralizer can stimulate the joint post and make the terminal retraction of joint post overlap the inside of piece, it is closed with embedded splint and cup joint formula splint, the joint connects embedding to overlap the piece and cup joints between the joint, loosen the joint post, the joint post just can pass the joint hole that the joint connects the outside and insert the inside that cup joints the joint under the effect of joint spring force, thereby it is fixed stable with embedded splint and cup joint formula splint, make this slider formula centralizer can be swift install in oil pipe's outside.

3. This slider formula centralizer uses through sliding bottom and fly leaf and unable adjustment base and the cooperation of rightting the spring for this slider formula centralizer is when going deep into the oil well, roller and the contact of oil well inner wall and extrusion sliding bottom, and sliding bottom can drive the inside of fly leaf retraction unable adjustment base and compress righting the spring under the effect of roller, thereby rights oil pipe through the elasticity of righting the spring, thereby guarantees the effect of rightting to oil pipe.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the exterior of the present invention;

FIG. 3 is a schematic view of the construction of the embedded splint and the slip cover splint of the present invention;

FIG. 4 is a schematic view of the interior of the fixing base according to the present invention;

fig. 5 is a schematic structural diagram of the interior of the sliding base according to the present invention.

In the figure: 1. a sleeve; 2. a fixed base; 3. a sliding base; 4. a roller; 5. sleeving a joint; 6. sleeving and connecting blocks; 7. a clamping column; 8. fixing grooves; 9. clamping a connector; 10. a fixing plate; 11. an embedded splint; 12. an oil pipe; 13. a muff-coupling splint; 14. clamping a spring; 15. a movable shaft; 16. a centering spring; 17. a movable plate; 18. and (7) connecting the shafts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: a slide block type centralizer comprises a casing 1 and an oil pipe 12, wherein fixed bases 2 which are uniformly distributed are fixedly arranged outside the casing 1, movable shafts 15 are fixedly sleeved at two ends of the casing 1, movable plates 17 are movably sleeved inside the fixed bases 2, centralizing springs 16 are fixedly connected between the fixed bases 2 and the movable plates 17, sliding grooves matched with the movable plates 17 are formed inside the fixed bases 2, limiting plates matched with the movable plates 17 are arranged at the tops of the fixed bases 2, the sliding grooves formed inside the fixed bases 2 enable the sliding bases 3 and the movable plates 17 to slide inside the fixed bases 2, the centralizing springs 16 are driven to be compressed when the movable plates 17 slide, so that the fit relation between the external structure of the casing 1 and the inner wall of an oil well is ensured, the centralizing effect on the oil pipe 12 is further ensured, the limiting plates arranged at the tops of the fixed bases 2 can prevent the movable plates 17 from being separated from the inside the fixed bases 2 in the sliding process, the external part of the movable plate 17 is fixedly provided with the sliding base 3, the internal part of the sliding base 3 is movably sleeved with the connecting shafts 18 which are uniformly distributed, the external part of the connecting shaft 18 is fixedly sleeved with the rollers 4, the outer surfaces of the rollers 4 extend to the external part of the sliding base 3, the rollers 4 are made of hard rubber, the outer surfaces of the rollers 4 extend to the external part of the sliding base 3 and are in direct contact with the well wall of an oil well, so that when the oil pipe 12 and the sleeve 1 are lifted and moved, the rollers 4 can roll under the action of the connecting shafts 18 to reduce the friction force between the sleeve 1 and the well wall, the operation of an operator is facilitated, the rollers 4 can play a certain safety protection effect by using the hard rubber, the external part of the movable shaft 15 is movably sleeved with the embedded type clamping plates 11 and the sleeved type clamping plates 13, and both the, the casing 1 is made of metal, waterproof paint is coated on the outer part of the casing 1, the embedded clamp plate 11 and the sleeved clamp plate 13 are made of soft iron sheets, so that the embedded clamp plate 11 and the sleeved clamp plate 13 have certain deformation capacity, the embedded clamp plate 11 and the sleeved clamp plate 13 are convenient to be attached to the outer surface of the oil pipe 12 after being closed, the casing 1 is made of metal and can ensure the stability of the integral structure of the centralizer, the waterproof paint coated on the outer part of the casing 1 can prolong the service life of the whole device, the embedded clamp plate 11 and the sleeved clamp plate 13 are internally provided with uniformly distributed fixed plates 10, the outer part of the oil pipe 12 is provided with uniformly distributed fixed grooves 8, the fixed plates 10 are matched with the fixed grooves 8, and the fixed grooves 8 on the outer part of the oil pipe 12 can be matched with the fixed plates 10 on the inner sides of the embedded clamp plate, thereby assisting the sleeve joint between the sleeve 1 and the oil pipe 12, preventing the sleeve 1 and the oil pipe 12 from sliding up and down after the sleeve joint is completed, improving the stability of the centralizer during operation, the sleeve joint 5 and the sleeve joint block 6 are fixedly arranged outside the sleeve joint type clamp plate 13, the clamp column 7 is movably sleeved outside the sleeve joint block 6, the clamp joint 9 is fixedly arranged outside the embedded clamp plate 11, the sleeve joint 5, the sleeve joint block 6 and the clamp joint 9 can be connected and fixed through the clamp column 7, so that the embedded clamp plate 11 and the sleeve joint type clamp plate 13 are closed and fixed, the sleeve 1 can be fixedly sleeved outside the oil pipe 12, ensuring that the sleeve 1 can not be separated from the outside of the oil pipe 12 during the centralizing operation of the oil pipe 12, the distance value between the sleeve joint 5 and the sleeve joint block 6 is matched with the size value of the clamp joint 9, the fixing hole matched with the clamp column 7 is arranged outside the clamp joint 9, the external part of the sleeve joint 5 is provided with a clamping groove matched with the clamping column 7, when the embedded clamp plate 11 and the sleeve joint clamp plate 13 are completely closed, the clamping joint 9 can be embedded between the sleeve joint 5 and the sleeve joint block 6, the tail end of the clamping column 7 can pass through the clamping joint 9 through a fixed hole on the external part of the clamping joint 9 and is embedded into the clamping groove on the external part of the sleeve joint 5, so that the sleeve joint 5, the sleeve joint block 6 and the clamping joint block 9 are stably connected, the external part of the clamping column 7 is fixedly sleeved with a baffle plate, the internal part of the sleeve joint block 6 is provided with a movable groove matched with the baffle plate, a clamping spring 14 is fixedly connected between the sleeve joint block 6 and the baffle plate, a worker can pull the clamping column 7 to enable the tail end of the clamping column 7 to retract into the inner part of the sleeve joint block 6, the clamping column 7 can compress the clamping spring 14 in the movable groove through the, joint connects 9 can imbed between cover joint piece 6 and the cover connects 5, loosens joint post 7 this moment, and joint post 7 just can reset under the effect of the 14 elasticity power of joint spring to pass the outside joint hole of joint 9 and insert the inside of cover joint 5, with embedded splint 11 and the fixed stability of cover joint formula splint 13.

In conclusion, when the slider type centralizer is used, an oil pipe 12 is sleeved inside a sleeve 1, the positions of a fixed groove 8 and a fixed plate 10 are corresponding, an embedded clamp plate 11 and a sleeved clamp plate 13 are shifted to enable the embedded clamp plate 11 and the sleeved clamp plate 13 to deflect around a movable shaft 15, a clamping column 7 is pulled at the same time, the tail end of the clamping column 7 retracts into the sleeved block 6 and compresses a clamping spring 14 through a baffle outside the clamping column 7, the embedded clamp plate 11 and the sleeved clamp plate 13 are closed, the fixed plate 10 is clamped inside the fixed groove 8, a clamping joint 9 is embedded between the sleeved block 6 and a sleeved joint 5, the clamping column 7 is loosened, the clamping column 7 penetrates through a clamping hole outside the clamping joint 9 under the action of the elastic force of the clamping spring 14 and is inserted into the sleeved joint 5, the embedded clamp plate 11 and the sleeved clamp plate 13 are fixed stably, when the centralizer follows the oil pipe 12 to enter the inside an oil well, the roller 4 contacts with the inner wall of the oil well and extrudes the sliding base 3 through the connecting shaft 18, the sliding base 3 drives the movable plate 17 to retract into the fixed base 2 under the action of the connecting shaft 18 and compress the centering spring 16, so that the oil pipe 12 always bears the elastic force of the centering spring 16, meanwhile, the outer surface of the roller 4 contacts with the well wall and starts to roll under the action of the connecting shaft 18, and the installation and use processes of the whole slide block type centering device are completed.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a slider formula centralizer, includes sleeve pipe (1) and oil pipe (12), its characterized in that: the utility model discloses a sleeve pipe, including sleeve pipe (1), the fixed cover in both ends of sleeve pipe (1) has evenly distributed unable adjustment base (2), and the fixed cover in both ends of sleeve pipe (1) has loose axle (15), the inside movable sleeve of unable adjustment base (2) is equipped with fly leaf (17), and fixedly connected with rights spring (16) between unable adjustment base (2) and fly leaf (17), the outside fixed mounting of fly leaf (17) has sliding base (3), the inside movable sleeve of sliding base (3) is equipped with evenly distributed's connecting axle (18), the outside fixed sleeve of connecting axle (18) is equipped with roller (4), the outside movable sleeve of loose axle (15) is equipped with embedded splint (11) and cup joint formula splint (13), the inside of embedded splint (11) and cup joint formula splint (13) all is provided with evenly distributed's fixed plate (10).

2. The slider-type centralizer of claim 1, wherein: the socket joint formula splint (13) outside fixed mounting have socket joint (5) and cup joint piece (6), the outside movable sleeve of cup joint piece (6) is equipped with joint post (7), the outside fixed mounting of embedded splint (11) has joint to connect (9).

3. The slider-type centralizer of claim 2, wherein: the socket joint connects (5) and cup joints the big or small value that connects (9) of distance value between piece (6) and joint and matches, the joint connect the outside of (9) seted up with joint post (7) assorted fixed orifices, the outside of socket joint connects (5) seted up with joint post (7) assorted draw-in groove.

4. The slider-type centralizer of claim 2, wherein: the fixed cover in outside of joint post (7) is equipped with the baffle, the inside of cup jointing piece (6) is seted up with baffle assorted movable groove, and fixedly connected with joint spring (14) between cup jointing piece (6) and the baffle.

5. The slider-type centralizer of claim 1, wherein: embedded splint (11) and bell and spigot joint formula splint (13) all adopt soft iron sheet to make, sleeve pipe (1) adopts the metal to make, and the outside of sleeve pipe (1) is paintd waterproof coating.

6. The slider-type centralizer of claim 1, wherein: the fixing device is characterized in that fixing grooves (8) which are uniformly distributed are formed in the outer portion of the oil pipe (12), and the fixing plate (10) is matched with the fixing grooves (8).

7. The slider-type centralizer of claim 1, wherein: the outer surface of the roller (4) extends to the outside of the sliding base (3), and the roller (4) is made of hard rubber.

8. The slider-type centralizer of claim 1, wherein: the inside of unable adjustment base (2) is seted up with fly leaf (17) assorted spout, and the top of unable adjustment base (2) is provided with the limiting plate with fly leaf (17) assorted.