CN202391372U - Hollow grind shoes for refloating small underground litters - Google Patents
Hollow grind shoes for refloating small underground litters Download PDFInfo
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- CN202391372U CN202391372U CN2011203432009U CN201120343200U CN202391372U CN 202391372 U CN202391372 U CN 202391372U CN 2011203432009 U CN2011203432009 U CN 2011203432009U CN 201120343200 U CN201120343200 U CN 201120343200U CN 202391372 U CN202391372 U CN 202391372U
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Abstract
The utility model discloses a pair of hollow grind shoes for refloating small underground litters. The pair of hollow grind shoes comprises tire bodies (2) and upper joints (1) arranged above the tire bodies (2), wherein the tire bodies (2) are internally provided with a cavity respectively, the cavities are internally provided with a refloating device respectively, and the lower ends of the tire bodies (2) are respectively provided with a grinding surface (8). According to the hollow grind shoes for refloating the small underground litters provided by the utility model, the grind shoes are combined with the refloating devices, so that the integrated work of drilling, grinding and refloating can be realized. Furthermore, the hollow grind shoes are simple in structure, less in construction working procedure, and convenient to operate, so that powerful equipment support can be provided for grinding, milling and refloating the underground litters, the construction efficiency of workover treatment can be greatly improved, and the production cost can be reduced, and therefore the hollow grind shoes are high in use value.
Description
Technical field
The utility model relates to a kind of hollow junk mill, relates in particular to a kind of hollow junk mill that can salvage down-hole smallclothes junk.
Background technology
Oil well various faults or down-hole accident often occur in process of production for various reasons.Particularly after down-hole bit freezing or fish accident take place, force the oil well underproduction, subtract to annotate or stop production, stop and annotate, possibly cause oil well to be scrapped when serious.Therefore, in time properly handling down-hole accident is an important process that guarantees the oil well ordinary production, for guaranteeing that oil field stable high yield has crucial meaning.
Every disconnected drilling rod, drill collar, drill bit, oil pipe, sucker rod, fishing tool, rope class, instrument that drops in the well, and the obstruction production of dropping in the well and the object of construction are referred to as trouble of lost tool in hole, and the scene is commonly called as and is " fish ".These junks, what have drops to the shaft bottom, becomes the road blocking tiger that continues to creep into; What have drops to drill bit or centralizer with the upper part, becomes the immediate cause that causes bit freezing; What have in well midway, and horizontal stalk has been blocked the path of drilling tool operation in well; These accidents are not eliminated and can't be continued to creep into.Fish accident is the maximum accident of occurrence frequency in the down-hole accident, and the loss that causes also is very large.
In the oil well production process, mainly adopt following mode for the processing of down-hole smallclothes junk at present: according to different junks, instrument is salvaged to select junk basket with reverse circulation, strong magnetic die pointedly, tackle all problems at once etc.But the junk basket with reverse circulation service condition is relatively harsher, and strong magnetic die is invalid basically in deep-well, has great risk and tackle all problems at once in long barefoot interval, to use.Owing to many defectives that above-mentioned fishing tool exists in use, seriously influenced the timely cleaning of trouble of lost tool in hole.
In addition, for the junk that is buried by sand or cement is dead admittedly, then can't directly salvage.Generally need overlap earlier and mill operation, and then select proper tools to salvage.Mill, salvage operation and will certainly prolong the well workover cycle and increase special cover, increase workover cost, the production efficiency of oil well is impacted.
Summary of the invention
The purpose of the utility model is to provide a kind of mill of boring function that both had, and has the hollow junk mill of salvaging function again, optimizes and salvages operation.
A kind of concrete technical scheme of salvaging the hollow junk mill of down-hole smallclothes junk of the utility model is:
A kind of hollow junk mill of salvaging down-hole smallclothes junk comprises carcass and the top connection that is arranged on the carcass top, and carcass inside has cavity, is provided with fishing device in the cavity, and the lower end of carcass is provided with grinding face.
First embodiment of the hollow junk mill of the utility model is: the inner cavity of carcass comprises columniform first cavity, second cavity and the 3rd cavity; First cavity, second cavity and the 3rd cavity be UNICOM in order from bottom to top; The aperture of first cavity is greater than the aperture of second cavity; The aperture of second cavity is formed with first step greater than the aperture of the 3rd cavity between first cavity and second cavity, between second cavity and the 3rd cavity, be formed with second step.
The fishing device that is arranged on the carcass internal cavities comprises slips reset ring, spring, slips and slip spider; Slips resets and encircles the cylinder-like structure that has flange for the bottom; Slips reset the ring top be socketed in second cavity, cylindrical springs be sleeved on slips reset the ring on, the upper end of spring contacts with first step; The spring lower end contacts with the flange that slips resets on encircling; Slips be arranged on slips reset the ring lower end, the arranged outside of slips has the slip spider that matches with slips, slip spider is fixed on the sidewall of first cavity.
The reset width of width and first step of ring upper flange of the width of fishing device medi-spring and slips is identical, slips reset lateral wall and the inwall of spring and the mutual sliding-contact of sidewall of second cavity of ring top cylinder shape structure.
The inside of slip spider is formed with a conical cavity that matches with slips in the fishing device, and the conical cavity bottom is formed with the horizontal stop section of annular.The bottom of slip spider is provided with the protection gasket ring, and the lower end of slip spider is formed with groove, protection be formed with on the gasket ring with slip spider on the convexity that matches of groove.Be formed with breaker slot on the housing of slips in the fishing device, be formed with the detent bumps that matches with breaker slot on the slip spider.
Second embodiment of the hollow junk mill of the utility model is: the inner cavity of carcass comprises columniform first cavity and second cavity; Second cavity and first cavity be UNICOM up and down; The aperture of first cavity is formed with first step less than the aperture of second cavity between first cavity and second cavity.
The fishing device that is arranged on the carcass internal cavities comprises some spring leafs, and spring leaf is fixedly installed on the drift angle place between first step and first cavity.The top and bottom of integrated spring leaf are certain bending angle in the fishing device, and the center position in the spring leaf bottom is formed with screw.
A kind of combination of salvaging the hollow junk mill of down-hole smallclothes junk through junk mill and fishing device of the utility model has realized boring mill, salvaging institutional operation.And this device construction is simple, working procedure is few, easy to operate, for the milling of trouble of lost tool in hole, salvage strong equipment support is provided, improved the efficiency of construction of workover treatment greatly, reduced cost of production, have higher use value.
Description of drawings
Fig. 1 is the sectional drawing of hollow junk mill first embodiment of the utility model;
Fig. 2 is the sectional drawing of hollow junk mill second embodiment of the utility model;
Fig. 3 is the be hit by a bullet elevation of reed of hollow junk mill second embodiment of the utility model;
Fig. 4 is the be hit by a bullet side sectional view of reed of hollow junk mill second embodiment of the utility model.
The specific embodiment
In order better to understand purpose, structure and the function of the utility model,, a kind of hollow junk mill of salvaging down-hole smallclothes junk of the utility model is done further detailed description below in conjunction with accompanying drawing.
The hollow junk mill of the salvaging down-hole smallclothes junk of the utility model mainly comprises top connection 1 and carcass 2, and wherein, top connection 1 is arranged on the upper end of carcass 2, is mainly used in the jointed rod (not shown).The structure of top connection 1 can adopt the structure of common top connection in the prior art, and top connection 1 and carcass 2 are connected through modes such as screw threads.
In addition, different with existing junk mill, also be provided with fishing device in the internal cavities of the carcass 2 of the hollow junk mill of the utility model.The hollow junk mill of the utility model is through being arranged on the fishing device of carcass 2 inside, the function that can realize salvaging trouble of lost tool in hole like a cork.Carry out special cover separately when having avoided construction and mill, salvage operation, shortened the well workover cycle, reduced workover cost, have very great help for the production efficiency that improves oil well.
Kind according to trouble of lost tool in hole is different, and carcass 2 inner fishing devices can be arranged to multiple form of structure.As shown in Figure 1, the fishing device among first embodiment of the hollow junk mill of the utility model is mainly used in elongated junks such as salvaging drift size gauge tool, weighted lever, logger.
As shown in Figure 1, the carcass of present embodiment hollow core junk mill 2 inner cavitys mainly comprise from bottom to top UNICOM in order of columniform first cavity 9, second cavity 10 and the 3rd cavity 11, the first cavitys 9, second cavity 10 and the 3rd cavity 11.And the aperture of first cavity 9 is greater than the aperture of second cavity 10, and the aperture of second cavity 10 is greater than the aperture of the 3rd cavity 11, and formed first step 12 and second step 13 thus.
Be provided with spring 4 cylindraceous in first cavity 9, the upper end of spring 4 contacts with first step 12.The width of spring 4 is identical with the width of first step 12, and the lateral surface of spring 4 abuts against on the sidewall of first cavity 9, thus, makes the medial surface of spring 4 and the sidewall of second cavity 10 match, and in the vertical direction forms a unified curved surface.
Also be provided with the slips ring 3 that resets in first cavity 9, slips ring 3 the main body that resets is a cylinder-like structure, and is formed with flange around the bottom of cylinder-like structure.Slips ring 3 the cylinder-like structure that resets can be socketed in second cavity 10 in the utility model, and closely contacts with the sidewall of second cavity 10, and the width of the flange of cylinder-like structure bottom is identical with the width of spring 4, and flange closely is connected to the lower end of spring 4.Therefore, the slips ring 3 that resets closely is enclosed in spring 4 between first cavity 9 and first step 12, and the reset lateral wall of ring 3 top cylinder shape structures of slips closely contacts, and can slide each other with the inside wall of spring 4, the sidewall of second cavity 10.
The bottom of slip spider 6 is equipped with protection gasket ring 7, and the bottom surface of protection gasket ring 7 and the bottom surface of carcass 2 are in the same plane, are used to protect slip spider 6.In addition, as shown in Figure 1, be formed with convexity on the protection gasket ring 7, on slip spider 6, be formed with groove accordingly, through convexity on the protection gasket ring 7 and the groove fit on the slip spider 6, prevent to protect gasket ring 7 move left and right.Certainly; Also can be set to protect on the gasket ring 7 in the hollow junk mill of the utility model form groove, and form convexity on the slip spider 6, perhaps on protection gasket ring 7 and slip spider 6, form other interface arrangments; To prevent that neonychium ring 7 from sliding, and is not limited in the description of interface arrangment among Fig. 1.Protection gasket ring 7 is fixing through welding with carcass 2 contact portions.
The concrete course of work of hollow junk mill first embodiment of the salvaging down-hole smallclothes junk of the utility model is:
Utilize drilling rod that the hollow junk mill of present embodiment is transferred to the shaft bottom, when arriving the top of trouble of lost tool in hole, stop to transfer, and with workover fluid cyclic flusher junk top.Flushing process hollow core junk mill is slowly transferred to the junk top under the rotation of drilling rod drives, utilize 8 pairs of junk tops of grinding face of hollow junk mill lower end to revise, the deposit (fixed thing) outside the junk is bored the mill cleaning.
Simultaneously, junk will progress into the hollow junk mill inside of present embodiment.Hollow junk mill continues descending, and junk arrives slips 5, and goes up top slips 5.Slips 5 is up along the conical cavity in the slip spider 6, and on push away slips reset the ring 3.The slips ring 3 that resets is up along the side of the medial surface of spring 4 and second cavity 10, compresses spring 4 simultaneously.
Then, carry the hollow junk mill of the utility model on.Under the elastic force effect of spring 4, the slips ring that resets is 3 descending, and under push away slips 5.Slips 5 progresses into the conical cavity of slip spider 6 inside, because surrounding space dwindles, the card of slips 5 is compressed, and makes the clamping force of slips 5 increase gradually.Thus junk is clamped in the slips 5, junk is carried in the process last, be unlikely to from the hollow junk mill of the utility model, to drop.Carry drill string in the continuation, pull trouble of lost tool in hole out.
Fishing device among hollow junk mill first embodiment of above-mentioned the utility model is mainly used in elongated junks such as salvaging drift size gauge tool, weighted lever, logger.Fishing device among hollow junk mill second embodiment of the utility model shown in Fig. 2 then is mainly used in the spherical junk of salvaging steel ball and so on, and the concrete structure of fishing device is in the present embodiment:
As shown in Figure 2; Carcass 2 inner cavitys mainly comprise columniform first cavity 9 ' and second cavity 10 ' in the present embodiment; Second cavity 10 ' and first cavity UNICOM about in the of 9 ', and the aperture of first cavity 9 ' is less than the aperture of second cavity 10 ', and formed first step 12 ' thus.
The sidewall of first cavity 9 ' is provided with spring leaf 5 ', and the effect of the slips 5 among first embodiment of spring leaf 5 ' and the utility model is identical, and all card falling stop thing when being used to salvage trouble of lost tool in hole prevents that junk from dropping from hollow junk mill.And according to actual conditions, the number of spring leaf 5 ' also can be set flexibly, and in the present embodiment, the number of spring leaf 5 ' is preferably 4.
Like Fig. 3, shown in 4, the spring leaf 5 ' structure that is formed in one, and the bottom of spring leaf 5 ' is vertical, upper angled makes to present certain bending angle between top and the bottom of spring leaf 5 '.In addition, the center position in spring leaf 5 ' vertical bottom also is formed with screw 51 '.Therefore, spring leaf 5 ' can pass through screw on the sidewall of first cavity 9 ' easily, and makes the inclined upper of spring leaf 5 ' be in the drift angle place of first step 12 ' and first cavity 9 '.
Similar with first embodiment; Workover fluid can normally circulate when guarantee salvaging, and between spring leaf 5 ', also is provided with the tank (not shown), in order to avoid during the hollow junk mill hydrophthalmia of junk total blockage present embodiment; Workover fluid can flow into the shaft bottom through tank, guarantees the success rate of salvaging.
The concrete course of work of the hollow junk mill of the salvaging down-hole smallclothes junk of present embodiment is following:
Utilize drilling rod that the hollow junk mill of present embodiment is transferred to the shaft bottom, when arriving the top of trouble of lost tool in hole, stop to transfer, and with workover fluid cyclic flusher junk top.Flushing process hollow core junk mill is slowly transferred to the junk top under the rotation of drilling rod drives, utilize 8 pairs of junk tops of grinding face of hollow junk mill lower end to revise, the deposit (fixed thing) outside the junk is bored the mill cleaning.
Simultaneously, junk will progress into the hollow junk mill inside of present embodiment.Hollow junk mill continues descending, and junk arrives spring leaf 5 ', and goes up top spring leaf 5 '.Because spring leaf 5 ' has elasticity, junk can be up gradually, and pass spring leaf 5 ' and get into second cavity 10 '.
Then, last exhaust reduction footwear, because spring leaf 5 ' has recovered original form, junk just is blocked in second cavity 10 ', can't drop down.Therefore, spherical junk is just salvaged easily.
A kind of hollow junk mill of salvaging trouble of lost tool in hole of the utility model is through adopting the combination of junk mill and fishing device; Perfection has realized salvaging, has bored the mill institutional operation; Not only greatly reduce cost of production; Improved the efficiency of construction of workover treatment, and the hollow junk mill of the utility model is simple in structure, working procedure is few, easy to operate, be convenient to large tracts of land and promote.
Along with the continuous expansion in petroleum exploration and development zone and the continuous prolongation of oil mining time; The workover rig service to oil well number of times will constantly increase; Junk in the oil well also can constantly form simultaneously, and a kind of hollow junk mill of salvaging trouble of lost tool in hole of the utility model will obtain increasing application.
More than by specific embodiment the utility model is further described; But it should be understood that; Here concrete description; Should not be construed as the qualification to the essence and the scope of the utility model, the various modifications that the one of ordinary skilled in the art makes the foregoing description after reading this manual all belong to the scope that the utility model is protected.
Claims (10)
1. hollow junk mill of salvaging down-hole smallclothes junk comprises carcass (2) and is arranged on the top connection (1) of carcass (2) top that it is characterized in that carcass (2) inside has cavity, is provided with fishing device in the cavity, the lower end of carcass (2) is provided with grinding face (8).
2. hollow junk mill according to claim 1; It is characterized in that; The inner cavity of carcass (2) comprises columniform first cavity (9), second cavity (10) and the 3rd cavity (11); First cavity (9), second cavity (10) and the 3rd cavity (11) be UNICOM in order from bottom to top, and the aperture of first cavity (9) is greater than the aperture of second cavity (10), and the aperture of second cavity (10) is greater than the aperture of the 3rd cavity (11); Between first cavity (9) and second cavity (10), be formed with first step (12), between second cavity (10) and the 3rd cavity (11), be formed with second step (13).
3. hollow junk mill according to claim 2; It is characterized in that; The fishing device that is arranged on carcass (2) internal cavities comprises slips reset ring (3), spring (4), slips (5) and slip spider (6), and the slips ring (3) that resets has the cylinder-like structure of flange for the bottom, and the reset top of ring (3) of slips is socketed in second cavity (10); Cylindrical springs (4) is sleeved on slips and resets on the ring (3); The upper end of spring (4) contacts with first step (12), and the flange that spring (4) lower end and slips reset on the ring (3) contacts, and slips (5) is arranged on slips ring (3) lower end that resets; The arranged outside of slips (5) has the slip spider (6) that matches with slips (5), and slip spider (6) is fixed on the sidewall of first cavity (9).
4. hollow junk mill according to claim 3; It is characterized in that; The reset width of width and first step (12) of ring (3) upper flange of the width of fishing device medi-spring (4) and slips is identical, slips reset lateral wall and the inwall of spring (4) and the mutual sliding-contact of sidewall of second cavity (10) of ring (3) top cylinder shape structure.
5. hollow junk mill according to claim 4 is characterized in that, the inside of slip spider in the fishing device (6) is formed with a conical cavity that matches with slips (5), and the conical cavity bottom is formed with the horizontal stop section of annular.
6. hollow junk mill according to claim 5; It is characterized in that; The bottom of slip spider in the fishing device (6) is provided with protection gasket ring (7), and the lower end of slip spider (6) is formed with groove, be formed with in protection gasket ring (7) with slip spider (6) on the convexity that matches of groove.
7. hollow junk mill according to claim 5 is characterized in that, is formed with breaker slot (14) on the housing of slips in the fishing device (5), is formed with the detent bumps (15) that matches with breaker slot (14) on the slip spider (6).
8. hollow junk mill according to claim 1; It is characterized in that; The inner cavity of carcass (2) comprises columniform first cavity (9 ') and second cavity (10 '); Second cavity (10 ') and first cavity (9 ') be UNICOM up and down, and the aperture of first cavity (9 ') is formed with first step (12 ') less than the aperture of second cavity (10 ') between first cavity (9 ') and second cavity (10 ').
9. hollow junk mill according to claim 8 is characterized in that, the fishing device that is arranged on carcass (2) internal cavities comprises some spring leafs (5 '), and spring leaf (5 ') is fixedly installed on the drift angle place between first step (12 ') and first cavity (9 ').
10. hollow junk mill according to claim 9 is characterized in that the top and bottom of integrated spring leaf (5 ') are certain bending angle in the fishing device, and the center position in spring leaf (5 ') bottom is formed with screw (51 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203432009U CN202391372U (en) | 2011-09-09 | 2011-09-09 | Hollow grind shoes for refloating small underground litters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203432009U CN202391372U (en) | 2011-09-09 | 2011-09-09 | Hollow grind shoes for refloating small underground litters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391372U true CN202391372U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203432009U Expired - Fee Related CN202391372U (en) | 2011-09-09 | 2011-09-09 | Hollow grind shoes for refloating small underground litters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391372U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966326A (en) * | 2012-11-16 | 2013-03-13 | 沈阳北方重矿机械有限公司 | Profiled salvage drill bit |
| CN108194044A (en) * | 2018-02-23 | 2018-06-22 | 中国石油天然气股份有限公司 | Grind shoe |
| CN109252823A (en) * | 2018-09-20 | 2019-01-22 | 中国石油天然气股份有限公司 | Multi-wing grind shoe synchronous grabbing mechanism and using method |
| CN111648737A (en) * | 2020-07-01 | 2020-09-11 | 中煤科工集团重庆研究院有限公司 | Clamping type buckle-making fishing drill bit for underground coal mine |
| CN112469882A (en) * | 2018-07-25 | 2021-03-09 | 沙特阿拉伯石油公司 | Milling underground pipe fitting |
-
2011
- 2011-09-09 CN CN2011203432009U patent/CN202391372U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966326A (en) * | 2012-11-16 | 2013-03-13 | 沈阳北方重矿机械有限公司 | Profiled salvage drill bit |
| CN108194044A (en) * | 2018-02-23 | 2018-06-22 | 中国石油天然气股份有限公司 | Grind shoe |
| CN112469882A (en) * | 2018-07-25 | 2021-03-09 | 沙特阿拉伯石油公司 | Milling underground pipe fitting |
| CN109252823A (en) * | 2018-09-20 | 2019-01-22 | 中国石油天然气股份有限公司 | Multi-wing grind shoe synchronous grabbing mechanism and using method |
| CN109252823B (en) * | 2018-09-20 | 2023-11-28 | 中国石油天然气股份有限公司 | Synchronous grabbing mechanism for multi-wing mill shoes and use method |
| CN111648737A (en) * | 2020-07-01 | 2020-09-11 | 中煤科工集团重庆研究院有限公司 | Clamping type buckle-making fishing drill bit for underground coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20160909 |