CN201943620U - Multilayer casing pipe cutting knife - Google Patents
Multilayer casing pipe cutting knife Download PDFInfo
- Publication number
- CN201943620U CN201943620U CN2011200357167U CN201120035716U CN201943620U CN 201943620 U CN201943620 U CN 201943620U CN 2011200357167 U CN2011200357167 U CN 2011200357167U CN 201120035716 U CN201120035716 U CN 201120035716U CN 201943620 U CN201943620 U CN 201943620U
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- cutting knife
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- cutters
- piston rod
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Abstract
The utility model relates to a multilayer casing pipe cutting knife, which is a casing pipe cutting tool used in petroleum drilling and workover operations. The multilayer casing pipe cutting knife comprises a cylindrical revolution body-type main body which is in threaded connection with an upper joint; a hydraulic cylinder barrel is arranged along the revolution centre line; a piston which is capable of moving along the hydraulic cylinder barrel is arranged in the hydraulic cylinder barrel; the backpressure face of the piston is provided with a piston rod; a return spring is sheathed on the piston rod; a drilling fluid channel is arranged along the revolution centre line of the piston and the piston rod; the inlet of the drilling fluid channel is provided with a water nozzle; the top end of the piston rod is supported on a plurality of telescopic cutter handles of cutters evenly distributed on the revolution circumference of the main body; and the cutters are respectively connected to a hinge of the main body. The pressure of drilling fluid is utilized by the multilayer casing pipe cutting knife to push the piston for controlling the cutters to be opened or closed; due to the fact that the circumference is provided with the cutters, and different diameters of casing pipes can be cut as long as the cutters are opened at different angles, and thereby, the problem that different diameters of casing pipes cannot be cut by the cutters is solved. Due to the fact that the cutters are arranged on the cutting knife through pin shafts, the cutters are convenient to demount.
Description
Technical field
The utility model relates to a kind of multilayer sleeve cutter, is a kind of collar buster in a kind of oil drilling, the workover treatment, is a kind of instrument that is used to cut down-hole casing.
Background technology
In oil drilling or well workover process, often need cut sleeve pipe in the down-hole.Existing most of tubing cutting tool is once gone into the well and can only be cut a kind of sleeve pipe of specification.Sleeve pipe as needs cutting plurality of specifications just needs to pull out of hole again and again, bore down, changes cutting tool, wastes time and energy.Existing cutter damage if any cutting knife, can't change cutting knife at situ of drilling well, need arrive in the mechanical workshop and could change cutting knife, and operating efficiency is lower.Existing cutting knife has only a blade usually, and cutting efficiency is lower.
Summary of the invention
In order to overcome prior art problems, the utility model proposes a kind of multilayer sleeve cutter.Described cutter have can be for convenience detach cutting knife, described cutting knife is scalable, can cut the sleeve pipe of certain diameter scope, and need not to change cutter.The cutting knife of described cutter has a plurality of blades, can cut sleeve pipe efficiently.
The purpose of this utility model is achieved in that a kind of multilayer sleeve cutter, comprise: the columniform main body that is threaded with top connection, centre of gyration line along described main body is provided with hydraulic cylinder, be provided with the piston that can move along hydraulic cylinder in the described hydraulic cylinder, the back pressure face of described piston is provided with piston rod, described upper cover of piston rod has back-moving spring, centre of gyration line along described piston and piston rod is provided with the drilling fluid passage, the import department of described drilling fluid passage is provided with water nozzle, the top of described piston rod withstands on a plurality of turning round on the cutting knife handle of cutting knife uniform on the circumference in main body of can stretching, and described a plurality of cutting knifes are connected with the main body hinge respectively.
Further, described cutting knife is connected with main body as hinge by bearing pin, and described bearing pin is by screw.
Further, be welded with a plurality of cutting tips on the described cutting knife.
Further, be welded with a plurality of hard alloy particles on the described cutting knife.
Further, on the revolution circumference of described main body uniform 3 cutting knife.
The beneficial effect that the utility model produces is: the utility model utilizes the pressure of drilling fluid, promote the piston that the control cutting knife opens and closes, because a plurality of cutting knifes are arranged on circumference, cutting knife opens the sleeve pipe that different angles just can be cut different-diameter, has solved the problem that cutting knife can cut the sleeve pipe of different-diameter.Because cutting knife is installed on the cutter by bearing pin, dismantle very conveniently, closely need a screw promptly dismantled and assembled, very convenient.Solved the problem that cutting knife is changed at the scene.Owing to be provided with a plurality of blades on the cutting knife, solved the problem of stock-removing efficiency.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is embodiment one a described cutter structural principle schematic diagram of the present utility model, is the rotation profile of the B-B of Fig. 2;
Fig. 2 is the novel embodiment of this usefulness two, five described cutter structural principle schematic diagrames, is the sectional drawing that Fig. 1 A-A amplifies.
The specific embodiment
Embodiment one:
Present embodiment is a kind of multilayer sleeve cutter, comprise: the columniform main body 5 that is threaded with top connection 1, centre of gyration line along described main body is provided with hydraulic cylinder, be provided with the piston 3 that can move along hydraulic cylinder in the described hydraulic cylinder, the back pressure face of described piston is provided with piston rod, described upper cover of piston rod has back-moving spring 4, centre of gyration line along described piston and piston rod is provided with the drilling fluid passage, the import department of described drilling fluid passage is provided with water nozzle 2, the exit of described drilling fluid passage is provided with nozzle 6, the top of described piston rod withstand on a plurality of can stretch the cutting knife of cutting knife 8 uniform on the main body revolution circumference 81 on, described a plurality of cutting knifes are connected with the main body hinge respectively.
The operating principle of present embodiment is: utilize drilling fluid that piston is carried out the pressure effect and carries out hydraulically operated.When drilling liquid flow was crossed the drilling fluid passage, the appropriate design by hole dimension in the water nozzle produced enough pressure reduction, promoted piston and moved down.Piston moves down the compression spring, and the cutting knife of piston rod promotion simultaneously outwards opens, and cuts sleeve pipe gradually.
After cutting is finished, stop the supply of drilling fluid, piston resets under the effect of back-moving spring, and piston rod no longer promotes cutting knife.On carry cutter, cutting knife inside spinning reduction under the effect of deadweight, cutter just can propose from well.
The key of present embodiment is to make cutting knife scalable within the specific limits, except that being convenient to trip-out, following boring, importantly can cutting the sleeve pipe of certain diameter scope, rather than can only cut a kind of sleeve pipe of diameter.Cutting knife in the present embodiment is just as a lever, and blade is an arm of force of lever, and hilt is another arm of force, and fulcrum is the hinge that is connected on the main body.Blade is sagging naturally under the effect of gravity, when pressing hilt, and the blade perk, from the cutter visual observation, the phenomenon of generation is exactly that blade stretches out from main body.
For ease of the dismounting cutting knife, can use multiple mode fixed cutting tool, for example with bolt or other easy-to-dismount devices.Present embodiment adopts a kind of mode of bearing pin, and as hinge, as the fulcrum of cutting knife, and with jackscrew or screw fixed pin shaft, dismounting is very convenient with bearing pin.
For improving stock-removing efficiency, present embodiment welds a plurality of carbide chips as blade on cutting knife.Further can increase stock-removing efficiency welding some hard alloy particles on the cutting knife again.
Can also increase the number of cutting knife for improving stock-removing efficiency, for example can use two, three, four, perhaps more cutting knife is installed on the revolution circumference of main body evenly distributedly.What of cutter decide according to the diameter of cutter, can select to use four above cutting knifes when the diameter of cutter is big, when the cutter diameter than hour just using two or three cutting knife.
Embodiment two:
Present embodiment is the improvement of embodiment one, is the refinement of embodiment one about cutting knife.The described cutting knife of present embodiment is connected with main body as hinge by bearing pin 7, and described bearing pin is fixing by screw 9.
As shown in Figure 2, the fixed screw of the described bearing pin of present embodiment is arranged on an end of bearing pin, also can use jackscrew that bearing pin is fixed.
Embodiment three:
Present embodiment is the improvement of embodiment two, is the refinement of embodiment two about cutting knife.Be welded with a plurality of cutting tips on the described cutting knife of present embodiment.
Be to improve stock-removing efficiency, present embodiment has adopted the mode of the cutting tip that welded on the cutting knife, and these cutting tips can be alloy steels, also can be carbide alloy.
Embodiment four:
Present embodiment is the improvement of embodiment three, is the refinement of embodiment three about cutting knife.Be welded with a plurality of hard alloy particles on the described cutting knife of present embodiment.
For improving stock-removing efficiency, except that a plurality of cutting tips of welding on cutting knife, can also increase some hard alloy particles of welding.Because the power of drilling rod is powerful, can increases cutting data by the mode that increases blade and hard alloy particle fully, and can not overload.
Embodiment five:
Present embodiment is the improvement of the foregoing description, is the refinement of the foregoing description about cutting knife quantity.Uniform 3 cutting knife on the revolution circumference of the described main body of present embodiment.
As shown in Figure 2, present embodiment is suitable for the less drilling rod of diameter, and as can see from Figure 3, the less drilling rod of diameter three cutting knifes of arranging are very crowded, but the space is enough.
It should be noted that at last, below only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model (such as annexation etc. between the motion mode of cutting knife, each key element), and not break away from the spirit and scope of technical solutions of the utility model.
Claims (5)
1. multilayer sleeve cutter, comprise: the columniform main body that is threaded with top connection, centre of gyration line along described main body is provided with hydraulic cylinder, be provided with the piston that can move along hydraulic cylinder in the described hydraulic cylinder, the back pressure face of described piston is provided with piston rod, described upper cover of piston rod has back-moving spring, it is characterized in that, centre of gyration line along described piston and piston rod is provided with the drilling fluid passage, the import department of described drilling fluid passage is provided with water nozzle, the exit of described drilling fluid passage is provided with nozzle, the top of described piston rod withstands on a plurality of turning round on the cutting knife handle of cutting knife uniform on the circumference in main body of can stretching, and described a plurality of cutting knifes are connected with the main body hinge respectively.
2. cutter according to claim 1 is characterized in that described cutting knife is connected with main body as hinge by bearing pin, and described bearing pin is by screw.
3. cutter according to claim 2 is characterized in that, is welded with a plurality of cutting tips on the described cutting knife.
4. cutter according to claim 3 is characterized in that, is welded with a plurality of hard alloy particles on the described cutting knife.
5. according to claim 1,2,3, one of 4 described cutteves, it is characterized in that uniform 3 cutting knife on the revolution circumference of described main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357167U CN201943620U (en) | 2011-02-10 | 2011-02-10 | Multilayer casing pipe cutting knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200357167U CN201943620U (en) | 2011-02-10 | 2011-02-10 | Multilayer casing pipe cutting knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201943620U true CN201943620U (en) | 2011-08-24 |
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ID=44470969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200357167U Expired - Fee Related CN201943620U (en) | 2011-02-10 | 2011-02-10 | Multilayer casing pipe cutting knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201943620U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103190692A (en) * | 2013-04-07 | 2013-07-10 | 湖北烟草金叶复烤有限责任公司 | Tobacco leaf threshing machine with cutting edge tool |
| CN103510902A (en) * | 2012-06-25 | 2014-01-15 | 中国石油化工股份有限公司 | Oil pipe cutting device |
| CN105298423A (en) * | 2015-11-16 | 2016-02-03 | 中国石油集团海洋工程有限公司 | Hydraulic cutter for one-time cutting of multi-layer casing |
| CN107387011A (en) * | 2017-08-02 | 2017-11-24 | 西南石油大学 | Waterpower promotes the downhole tool for realizing continuous cutting different-diameter sleeve pipe |
| CN107701136A (en) * | 2017-05-09 | 2018-02-16 | 深圳市远东石油钻采工程有限公司 | A kind of new type of deep-water major diameter hydraulic cutter and efficient blade apparatus |
| CN107701137A (en) * | 2017-05-09 | 2018-02-16 | 深圳市远东石油钻采工程有限公司 | A kind of pressure difference changes limit-type deep water casing-pipe cutting hydraulic cutter device greatly |
| CN108782151A (en) * | 2018-05-17 | 2018-11-13 | 道真自治县云星种植有限责任公司 | Honeysuckle planting unit |
| CN108915629A (en) * | 2018-08-06 | 2018-11-30 | 西南石油大学 | It is a kind of for cutting the novel hydropower cutter device of multilayer sleeve |
| CN110439490A (en) * | 2019-07-31 | 2019-11-12 | 中国海洋石油集团有限公司 | A kind of multilayer sleeve forging milling tool |
| CN111425158A (en) * | 2019-01-10 | 2020-07-17 | 中国石油天然气股份有限公司 | Oil well downhole pipe column cutting device and using method thereof |
| CN112469882A (en) * | 2018-07-25 | 2021-03-09 | 沙特阿拉伯石油公司 | Milling underground pipe fitting |
| CN115711099A (en) * | 2021-08-23 | 2023-02-24 | 中国石油天然气集团有限公司 | Vertical feed type hydraulic oil pipe internal cutting knife |
-
2011
- 2011-02-10 CN CN2011200357167U patent/CN201943620U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510902A (en) * | 2012-06-25 | 2014-01-15 | 中国石油化工股份有限公司 | Oil pipe cutting device |
| CN103190692A (en) * | 2013-04-07 | 2013-07-10 | 湖北烟草金叶复烤有限责任公司 | Tobacco leaf threshing machine with cutting edge tool |
| CN105298423A (en) * | 2015-11-16 | 2016-02-03 | 中国石油集团海洋工程有限公司 | Hydraulic cutter for one-time cutting of multi-layer casing |
| CN107701136A (en) * | 2017-05-09 | 2018-02-16 | 深圳市远东石油钻采工程有限公司 | A kind of new type of deep-water major diameter hydraulic cutter and efficient blade apparatus |
| CN107701137A (en) * | 2017-05-09 | 2018-02-16 | 深圳市远东石油钻采工程有限公司 | A kind of pressure difference changes limit-type deep water casing-pipe cutting hydraulic cutter device greatly |
| CN107387011A (en) * | 2017-08-02 | 2017-11-24 | 西南石油大学 | Waterpower promotes the downhole tool for realizing continuous cutting different-diameter sleeve pipe |
| CN108782151A (en) * | 2018-05-17 | 2018-11-13 | 道真自治县云星种植有限责任公司 | Honeysuckle planting unit |
| CN112469882A (en) * | 2018-07-25 | 2021-03-09 | 沙特阿拉伯石油公司 | Milling underground pipe fitting |
| CN108915629A (en) * | 2018-08-06 | 2018-11-30 | 西南石油大学 | It is a kind of for cutting the novel hydropower cutter device of multilayer sleeve |
| CN111425158A (en) * | 2019-01-10 | 2020-07-17 | 中国石油天然气股份有限公司 | Oil well downhole pipe column cutting device and using method thereof |
| CN111425158B (en) * | 2019-01-10 | 2023-12-22 | 中国石油天然气股份有限公司 | Downhole tubular column cutting device for oil well and use method thereof |
| CN110439490A (en) * | 2019-07-31 | 2019-11-12 | 中国海洋石油集团有限公司 | A kind of multilayer sleeve forging milling tool |
| CN115711099A (en) * | 2021-08-23 | 2023-02-24 | 中国石油天然气集团有限公司 | Vertical feed type hydraulic oil pipe internal cutting knife |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170727 Granted publication date: 20110824 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200727 Granted publication date: 20110824 |
|
| 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: 20110824 Termination date: 20180210 |