阅读说明：本技术 一种钻头同步旋转刮管器 (A kind of drill bit synchronous rotary pipeline scraper ) 是由 向长树 于 2019-10-20 设计创作，主要内容包括：本发明公开了一种钻头同步旋转刮管器,包括筒体,筒体的筒壁上开有若干个安装槽,安装槽内通过第一弹簧连接有刮刀板,安装槽内还设有弹性系数远大于第一弹簧的第二弹簧,第二弹簧顶端设有活动板,第一弹簧的底部安装在活动板上,活动板一端连接有连动杆,连动杆末端伸出至筒体外部,连动杆具有向外伸出或向内收缩的空间,且当连动杆向外伸出时,活动板沿筒体径向向外移动,当连动杆向内收缩时,带动活动板沿筒体径向向内移动。本发明的优点在于无论套管的实际内径怎么变化,刮刀板均能以几乎恒定的挤压力度进行刮削,即能避免刮削力度过大而导致的刮刀损坏、钻具卡死的情况,又能避免刮削力度过小而导致的清洁效果差的情况。(The invention discloses a kind of drill bit synchronous rotary pipeline scrapers, including cylinder, several mounting grooves are provided on the barrel of cylinder, it is connected in mounting groove by the first spring and scrapes knife plate, the second spring that coefficient of elasticity is much larger than the first spring is additionally provided in mounting groove, second spring top is equipped with movable plate, the bottom of first spring is mounted on movable plate, movable plate one end is connected with interlocking lever, interlocking lever end is extend out to outside cylinder, interlocking lever has protruding or to contract space, and when interlocking lever is protruding, movable plate is moved radially outward along cylinder, when interlocking lever is to contract, movable plate is driven to move radially inwardly along cylinder.The advantage of the invention is that no matter how the actual inner diameter of casing changes, scraping knife plate can carry out scraping with nearly constant extruding dynamics, it is avoided that the stuck situation of the damage of scraper caused by scraping dynamics is excessive, drilling tool, and is avoided that the situation of cleaning effect difference caused by scraping dynamics is too small.)

1. a kind of drill bit synchronous rotary pipeline scraper, including cylinder (1), several mounting grooves are provided on the barrel of the cylinder (1) (2), it is connected in the mounting groove (2) by the first spring (3) and scrapes knife plate (4), it is characterised in that: in the mounting groove (2) It is additionally provided with the second spring (5) that coefficient of elasticity is much larger than the first spring (3), second spring (5) top is equipped with movable plate (6), the bottom of first spring (3) is mounted on movable plate (6), and described movable plate (6) one end is connected with interlocking lever (7), Interlocking lever (7) end extend out to cylinder (1) outside, and interlocking lever (7) has protruding or to contract space, and works as When interlocking lever (7) is protruding, the movable plate (6) is moved radially outward along cylinder (1), when interlocking lever (7) is to contract, Movable plate (6) are driven to move radially inwardly along cylinder (1).

2. a kind of drill bit synchronous rotary pipeline scraper according to claim 1, it is characterised in that: the second spring (5) Coefficient of elasticity is 10 to 12 times of second spring (5).

3. a kind of drill bit synchronous rotary pipeline scraper according to claim 1, it is characterised in that: the second spring (5) is extremely Rare three be uniformly arranged along mounting groove (2) slot bottom, and be provided with and every second spring (5) phase in the bottom of movable plate (6) Corresponding jack (8).

4. a kind of drill bit synchronous rotary pipeline scraper according to claim 1, it is characterised in that: set in the mounting groove (2) There is the guide rail (9) of one group of opposition, the both ends of the movable plate (6) are movably connected on guide rail (9), and leading in wherein one end Through slot (10) are provided on rail (9), for across interlocking lever (7).

5. a kind of drill bit synchronous rotary pipeline scraper according to claim 1, it is characterised in that: the interlocking lever (7) is by axis Be integrally formed to bar and radial bars, the axial stem is fixedly connected with movable plate (6), the radial bars along cylinder (1) radially to Outer stretching.

6. a kind of drill bit synchronous rotary pipeline scraper according to claim 1, it is characterised in that: the end of the interlocking lever (7) End offers spherical groove (11), and activity is embedded with roller ball (12) in the spherical groove (11).

7. a kind of drill bit synchronous rotary pipeline scraper according to claim 6, it is characterised in that: the roller ball (12) uses Silicon nitride material is made, and spherical groove (11) inner surface is covered with one layer of silicon nitride coating.

8. a kind of drill bit synchronous rotary pipeline scraper according to claim 1, it is characterised in that: the side for scraping knife plate (4) Side is equipped with bolt retainer (13).

Technical field

The present invention relates to drilling equipment technical fields, and in particular to a kind of drill bit synchronous rotary pipeline scraper.

Background technique

In oil extraction process, casing inner cylinder can adhere to often cement block, cement sheath, hard wax, various saline crystallizations and The objects such as generated iron oxide after deposit, perforation burrs and casing corrosion, therefore, it is necessary to tripping in pipeline scrapers in well Under casing inner cylinder carry out prune job, to improve the success rate of tool tripping in and operation, the latus rectum of retaining sleeve is constant.Pipe cleaning Device is usually used cooperatively with screw motor, is mounted on drill bit rear and drill bit synchronous rotary, is cleaned simultaneously in drilling process Internal surface of sleeve pipe saves and primary additional removes process.

Most commonly seen drill bit synchronous rotary pipeline scraper is spring casing pipeline scraper, scrapes knife plate and is connected to by spring On shell wall, when use, scrapes knife plate under spring squeezing action, expands outwardly and be tightly attached to internal surface of sleeve pipe, realizes scraping work Make.There are a drawbacks for the structure: if casing inner diameter is larger, spring excessively extends, and the resilient pressing force for causing it to provide is not Foot, shaving effect are undesirable；If encounter casing inner diameter it is smaller when, spring excessively compresses, cause its provide resilient pressing force mistake Greatly, long-term high-intensitive scraping, is easily damaged scraper.In this case, if casing inner cylinder there are a certain section of attachment cement block, various salt The thicker situation such as class crystallization and deposit, this makes this section of casing inner diameter become smaller, if scraper is directly in larger resilient pressing force Under the action of carry out scraping, it is easy to cause scraper to damage, it is harder to encounter deposit, or even also entire drilling tool can be made stuck It can not rotate.

Although casing inner diameter amplitude of variation is little in normal use, since spring length is short, lesser width Degree variation also can cause spring extruding force to change greatly, so the drawback can not be ignored, it would be highly desirable to solve.

Summary of the invention

The purpose of the present invention is to provide a kind of drill bit synchronous rotary pipeline scrapers, and which solve conventional springs formula casing pipes cleaning Spring resilient pressing force changes with casing inner diameter and is changed in device, caused by scraper damage or shaving effect is undesirable asks Topic.

The present invention through the following technical solutions to achieve the above objectives:

A kind of drill bit synchronous rotary pipeline scraper, including cylinder are provided with several mounting grooves, the installation on the barrel of the cylinder It is connected in slot by the first spring and scrapes knife plate, the second bullet that coefficient of elasticity is much larger than the first spring is additionally provided in the mounting groove Spring, the second spring top are equipped with movable plate, and the bottom of first spring is mounted on movable plate, described movable plate one end It is connected with interlocking lever, the interlocking lever end is extend out to outside cylinder, and interlocking lever has protruding or to contract space, And when interlocking lever is protruding, the movable plate is moved radially outward along cylinder, when interlocking lever is to contract, drive activity Plate is moved radially inwardly along cylinder.

Further improvement lies in that the coefficient of elasticity of the second spring is 10 to 12 times of second spring.

Further improvement lies in that three that the second spring is at least uniformly arranged along mounting groove slot bottom, and in activity The bottom of plate is provided with jack corresponding with every second spring.

Further improvement lies in that being equipped with the guide rail of one group of opposition in the mounting groove, the both ends of the movable plate are movable It is connected on guide rail, and is provided with through slot on the guide rail of wherein one end, for across interlocking lever.

Further improvement lies in that the interlocking lever is integrally formed by axial stem and radial bars, the axial stem and movable plate It is fixedly connected, the radial bars are extended radially out along cylinder.

Further improvement lies in that the end of the interlocking lever offers spherical groove, activity is embedded with rolling in the spherical groove Dynamic ball.

Further improvement lies in that the roller ball is made of silicon nitride material, the spherical groove inner surface is covered with one Layer silicon nitride coating.

Further improvement lies in that the side for scraping knife plate is equipped with bolt retainer.

The beneficial effects of the present invention are: in casing scraping, no matter how the actual inner diameter of casing changes, and it is equal to scrape knife plate Scraping can be carried out with nearly constant extruding dynamics, that is, be avoided that caused by scraping dynamics is excessive that scraper damage, drilling tool are stuck The case where, and it is avoided that the situation of cleaning effect difference caused by scraping dynamics is too small.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention；

Fig. 2 is the sectional view of part-structure of the present invention；

Fig. 3 is the connection schematic diagram of guide rail and movable plate；

In figure: 1, cylinder；2, mounting groove；3, the first spring；4, knife plate is scraped；5, second spring；6, movable plate；7, interlocking lever；8, Jack；9, guide rail；10, through slot；11, spherical groove；12, roller ball；13, bolt retainer.

Specific embodiment

The application is described in further detail with reference to the accompanying drawing, it is necessary to it is indicated herein to be, implement in detail below Mode is served only for that the application is further detailed, and should not be understood as the limitation to the application protection scope, the field Technical staff can make some nonessential modifications and adaptations to the application according to above-mentioned application content.

In conjunction with shown in Fig. 1 to Fig. 3, a kind of drill bit synchronous rotary pipeline scraper, including cylinder 1, if being provided on the barrel of cylinder 1 Dry mounting groove 2, interior be connected with by the first spring 3 of mounting groove 2 scrape knife plate 4, scrape knife plate 4 and stretch out from the side of cylinder 1, be used for Scraping cleaning is carried out to internal surface of sleeve pipe.The side for scraping knife plate 4 is equipped with bolt retainer 13, scrapes knife plate 4 for mounting and dismounting.

The second spring 5 that coefficient of elasticity is much larger than the first spring 3, the bullet of specific second spring 5 are additionally provided in mounting groove 2 Property coefficient is 10 to 12 times of second spring 5, and when the effect by same size power, the deformation quantity of the first spring 3 is second 10 to 12 times of spring 5.At least be uniformly arranged along 2 slot bottom of mounting groove three of second spring 5, and in the bottom of movable plate 6 It is provided with jack 8 corresponding with every second spring 5, the support of several second springs 5 ensure that the stationarity of movable plate 6.

It is equipped with movable plate 6 on 5 top of second spring, the bottom of the first spring 3 is mounted on movable plate 6,6 one end of movable plate It is connected with interlocking lever 7,7 end of interlocking lever is extend out to outside cylinder 1.In order to guarantee that movable plate 6 can be moved steadily, in mounting groove 2 It is inside equipped with the guide rail 9 of one group of opposition, the both ends of movable plate 6 are flexibly connected on the rail 9, and on the guide rail of wherein one end 9 It is provided with through slot 10, for across interlocking lever 7.10 width of through slot is equal across the width of part with interlocking lever 7, and 10 length of through slot is big The thickness of part is passed through in interlocking lever 7, so that interlocking lever 7 can radially move back and forth.

It should be noted that under normal circumstances scraping when, the decrement of the first spring 3 is 2-3cm, and identical power acts on Decrement in second spring 5 is about 2mm, and due to being overlaying structure, this can make the first spring 3 that the deformation of 2mm or so also occur Amount, and for this first spring 3 lesser for coefficient of elasticity, the change of extruding force is almost negligible to be disregarded.

Interlocking lever 7 is integrally formed by axial stem and radial bars, and axial stem passes through through slot 10 and is fixedly connected with movable plate 6, Radial bars are extended radially out along cylinder 1.It is equipped in the barrel of cylinder 1 for interlocking lever 7 to be protruding or sky to contract Between, and when interlocking lever 7 is protruding, movable plate 6 is moved radially outward along cylinder 1, when interlocking lever 7 is to contract, is driven Movable plate 6 is moved radially inwardly along cylinder 1.

The end of interlocking lever 7 offers spherical groove 11, and 11 inner surface of spherical groove is covered with one layer of silicon nitride coating, spherical groove Activity is embedded with roller ball 12 in 11, and roller ball 12 is made of silicon nitride material.The silicon nitride material coefficient of expansion is small, high temperature When, locking phenomenon will not occur in spherical groove 11；In addition, silicon nitride material hardness is very big, excellent wear-resisting property, and itself has There is lubricity, so that the rotation that roller ball 12 also can be stable in poor environment.The setting of roller ball 12, so that in second spring In the biggish situation of 5 coefficient of elasticity, the rotation that interlocking lever 7 is moved freely against internal surface of sleeve pipe, to pipeline scraper still can guarantee It will not be impacted with moving up and down.

In the use of the present invention, pipeline scraper is mounted on drill bit rear and drill bit synchronous rotary, and it is sent into well together Under.During feeding, the roller ball 12 of 7 end of interlocking lever is in rolling contact with internal surface of sleeve pipe.When encountering certain on internal surface of sleeve pipe When one section of deposit is thicker, some thickness of deposits reach 3cm or more, are equivalent to casing radius and reduce 3cm or more, if tradition Pipeline scraper, this will obviously increase considerably the extruding force of the first spring 3, it is easy to cause the damage of scraper or even the card of drilling tool Extremely；And use the present invention, internal surface of sleeve pipe can force interlocking lever 7 to move radially inwardly, drive movable plate 6 along guide rail 9 it is radial to Interior movement, second spring 5 is compressed, so that the distance between movable plate 6 and internal surface of sleeve pipe are kept approximately constant, at this time first The extruding force of spring 3 is also just almost unchanged, is equivalent to and carries out scraping with normal extruding force, scraping each time can make thicker Deposit is more thinning, can clear up completely after multiple scraping, and the mode of this scraping several times effectively can avoid scraper from damaging Situation bad, drilling tool is stuck.When encounter a certain section of internal surface of sleeve pipe it is serious by drilling fluid erosion when, internal diameter expand, if tradition Pipeline scraper, this will obviously reduce the extruding force of the first spring 3, reduce shaving effect；And the present invention is used, casing inner diameter becomes larger meeting Keep interlocking lever 7 corresponding protruding, movable plate 6 can be moved radially outward under the elastic reaction of second spring 5, can still be made The distance between movable plate 6 and internal surface of sleeve pipe are kept approximately constant, so that the first spring 3 provides sufficient extruding force, guarantee to scrape Cut cleaning effect.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.