CN201148852Y - Steel wire cutting knife for cutting off down-hole steel wire - Google Patents
Steel wire cutting knife for cutting off down-hole steel wire Download PDFInfo
- Publication number
- CN201148852Y CN201148852Y CNU200720187246XU CN200720187246U CN201148852Y CN 201148852 Y CN201148852 Y CN 201148852Y CN U200720187246X U CNU200720187246X U CN U200720187246XU CN 200720187246 U CN200720187246 U CN 200720187246U CN 201148852 Y CN201148852 Y CN 201148852Y
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- steel wire
- blade
- bending head
- cut
- slide block
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Abstract
The utility model relates to a steel-wire cutting knife for cutting an underground steel wire, and is applied to the petroleum down-hole operation for cutting the underground steel wire. The steel-wire cutting knife is characterized in that an open slot is arranged on the wall of a body from top to bottom; a jack bolt is arranged on the body; a steel-wire cutting mechanism is arranged in a center hole at the lower end of the body; the steel-wire cutting mechanism comprises a blade, a slipper block, and a bending head; steps are arranged in the center hole at the lower end of the body; the upper end of the bending head butts against the plane of the steps; a threaded sleeve is connected with the lower end of the body in a screw thread manner; the lower end of the blade is positioned outside the threaded sleeve; a the jack bolt is arranged on the blade. The steel-wire cutting knife has the effects that the underground steel wire can be cut off; the steel wire is protected to the utmost extent, and the directly drawing-out manner for taking out the steel wire which is blocked underground is avoided; the design and structure are simple and skillful, and the steel wire whose maximum diameter is 3mm can be cut off; the steel-wire cutting knife only has eight parts, the reliability is high, and the adaptability is good.
Description
Technical field
The utility model relates to accident treatment technical field under the oil well, and the particularly a kind of and matching used underground work instrument of standard steel wire is a kind of special tool that is used for cutting off the down-hole steel wire.
Background technology
In oil gas field is produced, extensive use down-hole steel wire operation, steel wire operation is mainly used in the production test of oil well; The pulling downhole tool; Adjust the working system of oil well etc.In carrying out steel wire operation, because downhole conditions is complicated and changeable, the situation that the underground work instrument is stuck in the shaft bottom appears sometimes, the mode of carrying in the employing trips out the down-hole steel wire, two kinds of results may appear: when the underground work instrument is blocked when not serious, on propose the unfreezing of steel wire underground work instrument, salvage downhole tool; On being blocked seriously, be rigid, the underground work instrument carries steel wire, because the stressed load of steel wire is limited, can cause the distortion and the damage of steel wire, consequently whole dish steel wire can't reuse, and might damage to downhole tool, be unfavorable for subsequent job, also brought potential safety hazard simultaneously to ground.
The Chinese patent notification number is CN2851512, discloses a kind of down-hole formation testing swab line anti-off tool.This instrument can be thrown off when pulling force is excessive automatically; Can also realize docking again.When the swab line pulling force surpasses predetermined pull, can in time throw off automatically, swab line is not broken.Again descend weighted lever and swab line anti-off tool can realize docking again.Play the effect of protection steel wire.
Summary of the invention
The purpose of this utility model is: a kind of steel wire cutter that is used to cut off the down-hole steel wire is provided, is blocked when carrying out steel wire operation generation underground work instrument, utilize this instrument the steel wire bottom can be cut off and takes out.Promptly at well head steel wire is passed the steel wire cutter, instrument can be by at the bottom of the own wt lower going-into-well, and steel wire is cut off at the place at the shaft bottom rope socket, has protected steel wire to greatest extent, avoids adopting the mode that pulls off firmly to trip out the steel wire that is stuck in the shaft bottom.
The technical scheme that the utility model is taked is: the utility model is used to cut off the steel wire cutter of down-hole steel wire, mainly by blade, dog screw, swivel nut, cut off, slide block, bending head, bolt, body, bearing pin, screw form.It is characterized in that: cylindrical body has centre bore, and on the wall of body open slot is arranged from top to bottom, and the width of open slot can make steel wire enter in the centre bore of body by groove.Horizontal positioning bolt hole is arranged on body, alignment pin is arranged in the bolt hole.After steel wire enters the centre bore of body by groove, can steel wire be positioned in the centre bore of body with alignment pin.
In the centre bore of the lower end of body the wiring clip cutting mechanism is arranged, described wiring clip cutting mechanism is made up of blade, slide block and bending head, and by cutting off blade, slide block and bending head is fixed together.The lower end of the upper end of blade, bending head and the two ends of slide block all are 45 ° inclined-planes, and the slide block external diameter is made up of the circular arc of two different radiis, and integral body is flat, can produce length travel in operation process.Slide block is installed in the centre of blade and bending head, and the inclined-plane on both sides forms cooperation respectively.The open slot direction mutual dislocation of blade, slide block, bending head and body avoids that steel wire skids off in shear history in cutting mechanism.In the centre bore of body lower end step is arranged, the upper end of bending head is against on the step plane.
Screw thread is connected with swivel nut in the lower end of body.The endoporus of swivel nut is less than the body endoporus.Swivel nut endoporus step can play position-limiting action, and restriction wiring clip cutting mechanism skids off from the body lower end.The lower end of blade is in the outside of swivel nut.Horizontal positioning bolt hole is arranged on the blade, positioning bolt is arranged in the bolt hole.Dog screw plays the fixed guide steel wire.
Bolt adopts thread connecting mode to be fixed on bending crown end.Bolt has centre bore, and bolt has open slot.Bolt plays fixedly steel wire of guiding.
For stronger cut-out steel wire, the angle of inclination on a described blade upper end and a bending inclined-plane, lower end is between 30 °～60 °, and best angle is 45 °.
For after finishing steel wire and salvaging, can take out the steel wire cutter that originally be used to cut off the down-hole steel wire from the down-hole, the top of body be shaped as oblique taper type, tiltedly step is arranged at the bottom of taper type.
Because instrument is independent use, finishes after the shear action, trips out the steel wire of cutting off, be lowered to fishing tool again this steel wire cutter is pulled out, so the body upper end has one to salvage the footpath, the diameter of fishing neck is 35mm.The maximum outside diameter of body is 38mm, the width 3.5mm of open slot, and can shear the steel wire maximum gauge is 3mm.
Sketch the use of this steel wire cutter, help to understand the utility model.Instrument seriously is stuck in the down-hole in the underground work process, on carry steel wire and can not trip out instrument, adopt the utility model to cut off steel wire.Unload all component of format steel wire cutter; Steel wire is loosened, and steel wire enters blade and body and passes from the center from open slot, tightens dog screw, prevents that steel wire from skidding off from the center.Steel wire is passed from the cutting mechanism center that blade, a slide block and bending three forms, be connected and fixed with cutting off.Transfer this steel wire cutter, the straight steel wire that manually jumps leaves the steel wire cutter behind.This steel wire cutter drops to the shaft bottom in the effect of gravity.The end face of the blade of steel wire cutter will bump with locking cap top, shaft bottom, upwards extruding.Because the bending head is subjected to the position-limiting action of body step, can not be subjected to displacement, blade and bending head can only push to the centre, force external diameter to produce lengthwise movement less than the slide block of body internal diameter, in the capable thereon process, the inclined-plane at two ends produces dislocation with two inclined-planes of blade and bending head respectively, cuts off the steel wire that interts wherein.The cutting force of steel wire produces by two inclined-plane relative displacements.
Except that dog screw, other spare and accessory parts are equipped with open slot, conveniently at well head steel wire are passed the steel wire cutter, and fix steel wire by setting and two dog screws of part open slot direction.
The beneficial effects of the utility model are: be used to cut off the steel wire cutter of down-hole steel wire, the down-hole steel wire can be cut off.Protect steel wire to greatest extent, avoided adopting the mode that pulls off firmly to trip out the steel wire that is stuck in the shaft bottom.And it is simple, ingenious to have project organization, can cut off the steel wire that maximum gauge is 3mm.This steel wire cutter has only eight parts, the reliability height, and compliance is strong.
Description of drawings
Fig. 1 is the structural profile schematic diagram that is used to cut off the steel wire cutter of down-hole steel wire.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Among the figure, 1. blade, 2. dog screw, 3. swivel nut, 4. cut off, 5. slide block, 6. bending head, 7. bolt, 8. body, 9. bearing pin, 10. screw.
The specific embodiment
Embodiment 1: consult Fig. 1.The steel wire cutter that is used to cut off the down-hole steel wire with a GGD-38 is that example is elaborated.The maximum outside diameter of body 8 is 38mm, and can shear the steel wire maximum gauge is 3mm.
The steel wire cutter cylindrical body 8 that is used to cut off the down-hole steel wire has centre bore, and the maximum outside diameter of body 8 is 38mm, and open slot is arranged from top to bottom, the width 3.5mm of open slot on the wall of body 8.Bearing pin 9 and screw 10 that longitudinal register is arranged on body 8.The top of body 8 be shaped as oblique taper type, tiltedly step is arranged at the bottom of taper type, forms one and salvages directly, the diameter of fishing neck is 35mm.
In the centre bore of the lower end of body 8 the wiring clip cutting mechanism is arranged, described wiring clip cutting mechanism comprises blade 1, slide block 5 and bending 6, and by cutting off 4 blade 1, slide block 5 and bending 6 is fixed together.The lower end of the upper end of blade 1, bending 6 and the two ends of slide block 5 all are 45 ° inclined-planes, and slide block 5 external diameters are made up of the circular arc of two different radiis, and integral body is flat, can produce length travel in operation process.Slide block 5 is installed in the centre of blade 1 and bending 6, and the inclined-plane on both sides forms cooperation respectively.The open slot direction mutual dislocation of blade 1, slide block 5, bending 6 and body 8 avoids that steel wire skids off in shear history in cutting mechanism.In the body 8 lower end centre bores step is arranged, the upper end of bending 6 is against on the step plane.The lower end of the upper end of blade 1, bending 6 and the angle of inclination on slide block 5 inclined-planes are between 30 °～60 °, and best angle is 45 °.
Be connected with a swivel nut 3 at the lower end of body 8 screw thread.The endoporus of swivel nut 3 is less than body 8 endoporus.The lower end of blade 1 is in the outside of swivel nut 3, and length externally is 33.5mm.A positioning bolt hole is longitudinally arranged on the blade 1, positioning bolt 2 is arranged in the bolt hole.
Bolt 7 adopts thread connecting mode to be fixed on bending 6 top.Bolt 7 has centre bore, and bolt 7 has the open slot of 3.5mm.
Use the utility model points for attention:
1, close well head top paraffin valve, lubricator emptying must have the instrument catching device in the wellhead blowout preventer.
2, between instrument catching device and preventer, unclamp seal pressure cap, the lubricator of slinging, before the lifting, steel wire should loosen.
3, steel wire is passed the steel wire cutter, the bearing pin of packing into pushes lubricator closing tool catching device, and lubricator is installed.
4, slowly open paraffin valve, must open slowly, prevent steel wire cutter upper punch.
5, hold steel wire from well head, open the instrument catching device, leave cutter behind, this moment, preventer gate production tree gate must put in place by standard-sized sheet, and the while steel wire must manually jump straight, prevents from just to cut off steel wire at well head.
6, when the steel wire instrument of cutter and down-hole collides, blade and slide block just generation cut off steel wire directly to motion.If steel wire is not disconnected, can be lowered to ram or rod-type cutter, the bump plunger is cut off steel wire.
7, the steel wire cutter can be put upside down use, drops into the steel wire cutter earlier, and steel wire is cut off in back ram down.Following benefit is arranged: when cutter is gone into the well, as run into liquid level and can not cut off steel wire when the seating nipple.
Claims (5)
1, a kind of steel wire cutter that is used to cut off the down-hole steel wire, mainly by blade (1), dog screw (2), swivel nut (3), cut off (4), slide block (5), bending head (6), bolt (7), body (8), bearing pin (9), screw (10) is formed, it is characterized in that: cylindrical body (8) has centre bore, and open slot is arranged from top to bottom on the wall of body (8), the width of open slot can make steel wire enter by groove in the centre bore of body (8), and the bearing pin (9) and the screw (10) of longitudinal register arranged on body (8);
In the lower end centre bore of body (8), the wiring clip cutting mechanism is arranged, described wiring clip cutting mechanism is by blade (1), slide block (5) and bending head (6) are formed, steel wire passes from three's center, and by cutting off (4) with blade (1), slide block (5) and bending head (6) are fixed together, the upper end of blade (1), the two ends of the lower end of bending head (6) and slide block (5) all are 45 ° inclined-planes, slide block (5) external diameter is made up of the circular arc of two different radiis, integral body is flat, can in operation process, produce length travel, slide block (5) is installed in the centre of blade (1) and bending head (6), the inclined-plane on both sides forms cooperation respectively, blade (1), slide block (5), the open slot direction mutual dislocation of bending head (6) and body (8), avoid that steel wire skids off in shear history in cutting mechanism, in the centre bore of body (8) lower end step is arranged, the upper end of bending head (6) is against on the step plane;
Lower end screw thread at body (8) is connected with swivel nut (3), and the endoporus of swivel nut (3) is less than body (8) endoporus, and the lower end of blade (1) is in the outside of swivel nut (3), and blade has horizontal positioning bolt hole on (1), and positioning bolt (2) is arranged in the bolt hole.
2, according to the described steel wire cutter that is used to cut off the down-hole steel wire of claim 1, it is characterized in that: bolt (7) adopts thread connecting mode to be fixed on bending head (6) top, and bolt (7) has centre bore, and bolt (7) has open slot.
3, according to the described steel wire cutter that is used to cut off the down-hole steel wire of claim 1, it is characterized in that: the angle of inclination on described blade (1) upper end and bending head (6) inclined-plane, lower end is between 30 °～60 °, and best angle is 45 °.
4, according to the described steel wire cutter that is used to cut off the down-hole steel wire of claim 1, it is characterized in that: the top of body (8) be shaped as oblique taper type, tiltedly step is arranged at the bottom of taper type.
5, according to the described steel wire cutter that is used to cut off the down-hole steel wire of claim 1, it is characterized in that: the maximum outside diameter of body (8) is 38mm, the width 3.5mm of open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720187246XU CN201148852Y (en) | 2007-12-19 | 2007-12-19 | Steel wire cutting knife for cutting off down-hole steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720187246XU CN201148852Y (en) | 2007-12-19 | 2007-12-19 | Steel wire cutting knife for cutting off down-hole steel wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201148852Y true CN201148852Y (en) | 2008-11-12 |
Family
ID=40116618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720187246XU Expired - Fee Related CN201148852Y (en) | 2007-12-19 | 2007-12-19 | Steel wire cutting knife for cutting off down-hole steel wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201148852Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359873A (en) * | 2019-07-05 | 2019-10-22 | 中国石油天然气集团有限公司 | A kind of underground stub cable cutter and its application method |
| CN111215562A (en) * | 2018-11-23 | 2020-06-02 | 中国石油天然气股份有限公司 | Steel wire cutting device |
| CN113062700A (en) * | 2021-04-20 | 2021-07-02 | 渝丰科技股份有限公司 | Prefabricated cable for drilling special oil and gas well |
-
2007
- 2007-12-19 CN CNU200720187246XU patent/CN201148852Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111215562A (en) * | 2018-11-23 | 2020-06-02 | 中国石油天然气股份有限公司 | Steel wire cutting device |
| CN110359873A (en) * | 2019-07-05 | 2019-10-22 | 中国石油天然气集团有限公司 | A kind of underground stub cable cutter and its application method |
| CN113062700A (en) * | 2021-04-20 | 2021-07-02 | 渝丰科技股份有限公司 | Prefabricated cable for drilling special oil and gas well |
| CN113062700B (en) * | 2021-04-20 | 2024-04-02 | 渝丰科技股份有限公司 | Prefabricated cable for drilling special oil-gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20111219 |