Non-rotating sleeve scraper

Abstract

The utility model provides a non-rotating casing scraper. The non-rotating casing scraper comprises an upper connector, a sliding seat, a centralizing body, a plurality of scraper sleeves, a spring seat, a plurality of limiting sleeves, a plurality of springs, a plurality of pressing plates and a plurality of second hexagonal head bolts. According to the non-rotating casing scraper provided by the utility model, a scraper of a conventional mechanical casing scraper is directly mounted on the body, and when drilling work is carried out, the body and the scraper rotate along with a drill rod, so that the scraper rotates relative to a casing, friction is generated, and the casing is possibly damaged; and the upper joint of the non-rotary casing scraper is not connected with the spring seat, and the upper joint and the lower joint do not generate a force for driving the scraper to rotate when rotating along with the drill rod, so that the scraper does not damage the casing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of casing scraper, especially to a non-rotating casing scraper. BACKGROUND

[0002] The casing scraper can be used for removing cement blocks, cement rings, hard wax, various salt crystals and deposits, perforation burrs and iron oxide generated after casing corrosion and the like remaining on the inner wall of the casing, so as to unblock the underground tools.

[0003] The non-rotating casing scraper and scraping method, the traditional rubber tube type casing scraper and spring type casing scraper are connected with the drill bit or the milling tool when going down the well, the scraper rotates with the drill bit or the milling tool, which will rub with the casing, and long-time rubbing will damage the casing and even cause accidents.

[0004] Therefore, it is necessary to provide a non-rotating casing scraper to solve the above technical problems. SUMMARY

[0005] The utility model provides a non-rotating casing scraper, solved the traditional rubber tube type casing scraper and spring type casing scraper with drill bit or milling tool connection down the well, the scraper rotates with the drill bit or the milling tool, which will rub with the casing, and long-time rubbing will damage the casing and even cause accidents.

[0006] To solve the above technical problems, the utility model provides a non-rotating casing scraper, comprising:

[0007] The upper joint, the sliding seat, the centralizer, the plurality of scraper sleeves, the spring seat, the plurality of limiting sleeves, the plurality of springs, the plurality of pressing plates and the plurality of second hexagonal head bolts, the sliding seat is arranged on the surface of the upper joint, the centralizer is connected to the surface of the sliding seat, the plurality of scraper sleeves are all sleeved on the surface of the upper joint, the spring seat is installed on the surface of the plurality of scraper sleeves, the plurality of springs are all arranged on the surface of the spring seat, the plurality of pressing plates are respectively arranged on the left and right sides of the surface of the plurality of springs, the plurality of second hexagonal head bolts are respectively threadedly connected between the plurality of pressing plates and the spring seat, and the plurality of limiting sleeves are all sleeved on the surface of the upper joint and located between the plurality of scraper sleeves.

[0008] The surface of the spring seat is respectively installed with the left-hand scraper and the right-hand scraper.

[0009] Preferably, one end of the upper joint is sleeved with a lower joint.

[0010] Preferably, an O-shaped sealing ring is sleeved on the surface of the upper joint and in the inner part of the lower joint, and a first hexagonal head bolt is arranged between the upper joint and the lower joint.

[0011] Preferably, the pressing plate is used for limiting the spring.

[0012] Preferably, a positioning assembly is arranged between the pressing plate and the spring, the positioning assembly comprises a mounting groove, a mounting block, two positioning plates, two rubber blocks, a pressing block and a plurality of fixing pins, the mounting groove is arranged on the surface of the pressing plate, and the mounting block is arranged in the mounting groove.

[0013] Preferably, the two positioning plates are symmetrically connected to the two sides of one side of the mounting block, and the two rubber blocks are bonded to the opposite sides of the two positioning plates.

[0014] Preferably, the pressing block is arranged in the mounting groove and located at one side of the mounting block, and the plurality of fixing pins are arranged between the mounting block and the pressing plate.

[0015] Compared with the prior art, the non-rotating sleeve scraping device has the following beneficial effects:

[0016] The non-rotating sleeve scraping device of the utility model provides a non-rotating sleeve scraping device, the conventional mechanical sleeve scraping device is directly installed on the body, when drilling work is carried out, the body is rotated together with the scraping knife and the drill rod, so that the scraping knife is rotated relative to the sleeve, friction is generated, and the sleeve can be damaged, and the upper connector of the non-rotating sleeve scraping device is not connected with the spring seat, and the upper connector and the lower connector will not generate the rotating force for driving the scraping knife when the drill rod is rotated, so that the scraping knife will not damage the sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the first embodiment of the non-rotating sleeve scraping device of the utility model;

[0018] Figure 2 It is a structure schematic view of the pressing plate and the spring installation;

[0019] Figure 3 It is Figure 2 It is an internal structure schematic view of the pressing plate and the spring installation;

[0020] Figure 4 It is Figure 1 It is a structure schematic view of the scraping knife;

[0021] Figure 5 It is a structure schematic view of the second embodiment of the non-rotating sleeve scraping device of the utility model;

[0022] Figure 6 It is Figure 5 It is an enlarged schematic view of A part.

[0023] The figure mark: 1, upper joint; 2, sliding seat; 3, centralizer; 4, scraper sleeve; 5, left-handed scraper; 6, right-handed scraper; 7, spring seat; 8, limiting sleeve; 9, lower joint; 10, O-shaped sealing ring; 11, spring; 12, first hexagonal head bolt; 13, pressing plate; 14, second hexagonal head bolt;

[0024] 15, positioning assembly; 151, mounting groove; 152, mounting block; 153, positioning plate; 154, rubber block; 155, extrusion block; 156, fixing bolt. DETAILED DESCRIPTION

[0025] The utility model will be further explained in connection with the drawings and embodiments.

[0026] First embodiment

[0027] Please combine with Figure 1 , Figure 2 , Figure 3 And Figure 4 Among them, Figure 1 It is the structure schematic drawing of the first embodiment of the non-rotating sleeve pipe skiving device provided by the utility model; Figure 2 It is the structure schematic drawing of the pressing plate and spring installation; Figure 3 It is the internal structure schematic drawing of the pressing plate and spring installation shown in Figure 2 It is the structure schematic drawing of the scraper shown in Figure 4 It is the structure schematic drawing of the scraper shown in Figure 1 A non-rotating sleeve pipe skiving device, comprising:

[0028] Upper joint 1, sliding seat 2, centralizer 3, multiple scraper sleeves 4, spring seat 7, multiple limiting sleeves 8, multiple springs 11, multiple pressing plates 13 and multiple second hexagonal head bolts 14, the sliding seat 2 is arranged on the surface of the upper joint 1, the centralizer 3 is connected to the surface of the sliding seat 2, multiple scraper sleeves 4 are all sleeved on the surface of the upper joint 1, the spring seat 7 is installed on the surface of multiple scraper sleeves 4, multiple springs 11 are all arranged on the surface of the spring seat 7, multiple pressing plates 13 are respectively arranged on the left and right sides of the surface of multiple springs 11, multiple second hexagonal head bolts 12 are respectively threadedly connected between multiple pressing plates 13 and the spring seat 7, multiple limiting sleeves 8 are all sleeved on the surface of the upper joint 1 and located between multiple scraper sleeves 4;

[0029] The surface of the spring seat 7 is respectively provided with left-handed scraper 5 and right-handed scraper 6.

[0030] One end of the upper joint 1 is sleeved with lower joint 9.

[0031] The surface of the upper joint 1 is sleeved with an O-shaped sealing ring 10 inside the lower joint 9, and a first hexagonal head bolt 12 is arranged between the upper joint 1 and the lower joint 9.

[0032] The pressing plate 13 is used for limiting the spring 11.

[0033] The number of the spring seat 7 is one, the number of the limiting sleeve 8 is three, and the number of the spring 24 is twenty-four, that is, two springs 24 are stacked in one group, and there are 12 groups in total, one limiting sleeve 8 is composed of four frames, one group of springs 24 is arranged on each frame, and there are 8 groups in total, and the twenty-four springs 24 are arranged on the three limiting sleeves 8 respectively, and the spring seat 7 penetrates between the three limiting sleeves 8.

[0034] The spring 11 is placed on the back of the scraper, and the pressing plate 13 is fixed; the scraper combination key is directly assembled into the inner hole of the scraper sleeve 4, the centralizing body 3, the three groups of scraper sleeves 4 and the limiting sleeves 8 are sequentially sleeved on the spring seat 7, and the sliding seat 2 and the spring seat 7 assembly are sequentially sleeved on the upper joint 1 and connected with the lower joint 9.

[0035] After the non-rotating casing scraper is connected with the downhole tool to be associated, the non-rotating casing scraper is lowered into the well through the drill rod, the hydraulic casing scraper is in a non-working state, the upper joint penetrates through the sliding seat and the spring seat and is connected with the lower joint, and torque is directly transmitted, so that the torque is not transmitted to the scraper, and the scraper only moves forward and backward with the drill, so that the casing is cleaned.

[0036] Compared with the related art, the non-rotating casing scraper has the following beneficial effects:

[0037] The non-rotating casing scraper provided by the utility model has the advantages that the conventional mechanical casing scraper is directly installed on the body, when drilling work is performed, the body and the scraper rotate together with the drill rod, so that the scraper rotates relative to the casing, friction is generated, and the casing may be damaged, the upper joint of the non-rotating casing scraper is not connected with the spring seat, and when the upper joint 1 and the lower joint 9 rotate with the drill rod, no rotating force is generated on the scraper, so that the scraper will not damage the casing.

[0038] Second embodiment

[0039] Please refer to Figure 5 and Figure 6 , based on the non-rotating casing scraper provided by the first embodiment of the application, another non-rotating casing scraper is provided in the second embodiment of the application. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0040] Specifically, the second embodiment of the present application provides a non-rotating sleeve scraper, which is different from the prior art in that a positioning assembly 15 is arranged between the pressing plate 13 and the spring 11, the positioning assembly 15 comprises a mounting groove 151, a mounting block 152, two positioning plates 153, two rubber blocks 154, a pressing block 155 and a plurality of fixing pins 156, the mounting groove 151 is formed in the surface of the pressing plate 13, and the mounting block 152 is arranged in the mounting groove 151.

[0041] The mounting groove 151 and the mounting block 152 facilitate installation of the positioning plate 153 with the rubber block 154, a fixing hole matched with the fixing pin 156 is formed in the bottom of the inner wall of the mounting groove 151, and in use, when the mounting block 152 with the rubber block 154 and the positioning plate 153 is installed, the mounting block 152 is first placed in the mounting groove 151, and then the fixing pin 156 is used to pass through the mounting block 152 and be connected with the fixing hole in the bottom of the inner wall of the mounting groove 151, and the pressing block 155 facilitates the pressing function when the mounting block 152 is installed in the mounting groove 151.

[0042] The two positioning plates 153 are symmetrically connected to the two sides of one side of the mounting block 152, and the two rubber blocks 154 are bonded to the opposite sides of the two positioning plates 153.

[0043] The pressing block 155 is installed in the mounting groove 151 and located at one side of the mounting block 152, and the plurality of fixing pins 156 are arranged between the mounting block 152 and the pressing plate 13.

[0044] Compared with the prior art, the non-rotating sleeve scraper has the following beneficial effects:

[0045] The non-rotating sleeve scraper provided by the present application has the mounting groove 151, the mounting block 152, the two positioning plates 153, the two rubber blocks 154, the pressing block 155 and the fixing pins 156 arranged between the pressing plate 13 and the spring 11, which can play a positioning role when the spring 11 is installed, and can play a limiting role at the position of the spring 11 when the spring 11 is pressed downward.

[0046] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion obtained by using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A non-rotating cannula skimmer, characterized in that, Include: The upper joint, sliding seat, centralizer, a plurality of scraper sleeve, spring seat, a plurality of limit sleeve, a plurality of springs, a plurality of pressure plate and a plurality of second hexagonal head bolt, the sliding seat is arranged on the surface of the upper joint, the centralizer is connected to the surface of the sliding seat, a plurality of scraper sleeve is sleeved on the surface of the upper joint, the spring seat is installed on the surface of a plurality of scraper sleeve, a plurality of springs are arranged on the surface of the spring seat, a plurality of pressure plate is respectively arranged on the left and right sides of the surface of a plurality of springs, a plurality of second hexagonal head bolt is respectively screwed between a plurality of pressure plate and the spring seat, a plurality of limit sleeve is sleeved on the surface of the upper joint and located between a plurality of scraper sleeve; The surface of the spring seat is respectively provided with left-handed scraper and right-handed scraper.

2. The non-rotating cannula skiving device of claim 1, wherein, One end of the upper joint is sleeved with the lower joint.

3. The non-rotating cannula skiving device of claim 2, wherein, The surface of the upper joint and the inside of the lower joint are sleeved with O-shaped sealing ring, and the first hexagonal head bolt is arranged between the upper joint and the lower joint.

4. The non-rotating cannula skiving device of claim 1, wherein, The pressure plate is used for limiting the spring.

5. The non-rotating cannula skiving device of claim 1, wherein, The positioning assembly is arranged between the pressure plate and the spring, and the positioning assembly comprises a mounting groove, a mounting block, two positioning plates, two rubber blocks, a pressing block and a plurality of fixing pins, the mounting groove is opened on the surface of the pressure plate, and the mounting block is arranged in the mounting groove.

6. The non-rotating cannula skiving device of claim 5, wherein, Two positioning plates are symmetrically connected to the two sides of one side of the mounting block, and two rubber blocks are bonded to the opposite side of two positioning plates.

7. The non-rotating cannula skiving device of claim 5, wherein, The pressing block is installed in the mounting groove and located on one side of the mounting block, and a plurality of fixing pins are respectively arranged between the mounting block and the pressure plate.

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