CN203822227U - Novel device for clearing and salvaging fallen objects and deposited sand at bottom of well - Google Patents
Novel device for clearing and salvaging fallen objects and deposited sand at bottom of well Download PDFInfo
- Publication number
- CN203822227U CN203822227U CN201420195945.9U CN201420195945U CN203822227U CN 203822227 U CN203822227 U CN 203822227U CN 201420195945 U CN201420195945 U CN 201420195945U CN 203822227 U CN203822227 U CN 203822227U
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- China
- Prior art keywords
- well
- sand setting
- fishing device
- spool
- seat
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Abstract
The utility model relates to a novel device for clearing and salvaging fallen objects and deposited sand at the bottom of a well. The device comprises a barrel body, an upper connecting head which is connected with the upper end of the barrel body, a gear milling structure which is connected with the lower end of the barrel body, as well as an overflow check valve, a damping sleeve and a basket which are sequentially arranged in an inner cavity of the barrel body from top to bottom. The lowest end of the device is designed with a dextral zigzag pulling tooth which has the functions of breaking and pulling nonmetal big fallen objects at the bottom of the well, and the basket, the damping sleeve and the overflow check valve can ensure that small scattered objects at the bottom of the well can be completely salvaged, the operating procedure is greatly simplified, various kinds of scattered objects at the bottom of the well can be completely salvaged, and the salvage success rate is high.
Description
Technical field
The utility model relates to petroleum machinery field, particularly novel bottom hole falling article and sand setting cleaning fishing device for a kind of oil field.
Background technology
Traditional oil well bottom hole falling article and sand setting manner of cleaning up need to be equipped with multiple types of tools, lower many times tubing strings, efficiency is low, cost is high, usual manner is to fish for targetedly technique according to the situation employing of junk, as ferromagnetism junk adopts magnetic fishing tool, nonferromagnetic junk adopts reverse circulation to drag for basket, and shaft bottom sand setting adopts sand bucket etc.In shaft bottom small falling object is fished for process, inevitably can run into sand and bury phenomenon, want to salvage the sand washing that successfully just need to circulate, be that instrument directly contacts with junk or utilizes liquid stream to bring junk into instrument.After operation completes, sand can be redeposited to top of fish, wants thoroughly sand setting to be taken out of to ground and can only adopt sand bucket.Want to clear up at the bottom of completed well, must be equipped with multiple types of tools, lower many times tubing strings, efficiency is low, cost is high.
Summary of the invention
For above-mentioned defect, the utility model provides a kind of novel bottom hole falling article and sand setting simple in structure, reasonable in design, that salvaging efficiency is high to clear up fishing device.
The technical solution of the utility model is: comprise cylindrical shell with and the top connection that connects of upper end, overflow ball-and-seat, damping sleeve, the basketry being provided with successively from top to bottom in the mill teeth structure that lower end connects and cylinder lumen; Described mill teeth structure comprises the adapter sleeve of upper end and the zigzag moving tooth of lower end; Described basketry comprise peripheral ring-type basket support with and in be provided with by steel wire, intert the grid form; Described damping sleeve comprise outside tubular filter body with and inner chamber the upper end sieve plate, the inner chamber lower end that are provided be provided with by steel wire, intert the grid forming; Described overflow ball-and-seat comprise valve body with and the interior guiding cap being provided with successively from top to bottom, spool and valve seat; The central authorities that described guiding is emitted are provided with pilot hole, surrounding is provided with flowing hole; Described spool is seated on valve seat, spool central authorities be provided with valve core rod and its one end through described pilot hole, the other end through valve seat, on described valve core rod, be set with spring, its one end and guiding cap against, the other end and spool against.
Such scheme is further improved to:
Described zigzag moving tooth surface paving is welded with wear-resisting YD alloy.
Grid diameter in described basketry is not more than 8mm.
Described sieve plate diameter is 10mm, and the grid diameter in described damping sleeve is less than 10mm.
Described guiding cap is connected with valve body by screw thread.
On described valve seat, cut the seepage seam of many 0.2mm.
The utility model comprises that top connection, overflow ball-and-seat, damping sleeve, basketry, cylindrical shell, back of the body cap and mill teeth form, the zigzag that is designed with bottom dextrorotation is pulled out tooth, there is function broken and that stir shaft bottom non-metal kind bulk junk, basketry, damping sleeve, overflow ball-and-seat structure can guarantee shaft bottom smallclothes be scattered mince all salvaged.Device has greatly been simplified flow chart, all kinds of fall-outs in down-hole can be salvaged completely, and fishing success ratio is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of mill teeth structure;
Fig. 3 is the upward view of Fig. 2;
Fig. 4 is the structural representation of basketry;
Fig. 5 is the structural representation of Fig. 4;
Fig. 6 is the structural representation of damping sleeve;
Fig. 7 is the left view that Fig. 6 is;
Fig. 8 is the right view of Fig. 6;
Fig. 9 is the structural representation of overflow ball-and-seat;
Figure 10 is the structural representation of valve seat;
In figure: 1, top connection, 2, overflow ball-and-seat, 3, damping sleeve, 4, cylindrical shell, 5, basketry, 6, back of the body cap, 7, mill teeth structure; 11, adapter sleeve, 12, moving tooth; 21, guiding cap, 22, spring, 23, spool, 24, valve seat, 25, valve body, 26, seepage seam, 27, valve core rod; 31, filter body, 32, sieve plate, 33, sheath, the 34, first steel wire; 41, basket support, 42, guard ring, the 43, second steel wire.
The specific embodiment
With reference to Fig. 1, a kind of novel bottom hole falling article and sand setting cleaning fishing device, comprise that top connection 1, overflow ball-and-seat 2, damping sleeve 3, basketry 5, cylindrical shell 4, back of the body cap 6 and mill teeth structure 7 form, specific as follows:
1, mill teeth structure: the zigzag that is designed with bottom dextrorotation of device is pulled out tooth 12, pulls out tooth 12 external surfaces pavings and is welded with wear-resisting YD alloy, can realize the stirring and creeping on a small quantity of top of fish junk, and fluid,matching flows junk and sand.
2, basketry: basketry 5 is comprised of basket frame 41, guard ring 42 and the second steel wire 43, basketry 5 is for salvaging the junk of diameter between 10-55mm.Basket support 5 is thin-walled rings, is processed with N steel wire perforation of 15 ° of being inclined upwardly is used for guiding steel wire and forms grid at circumferencial direction, and grid diameter is not more than 8mm.The second steel wire 43 diameters are 1mm, around being through on basket frame 41.Guard ring 42 is fixed on the second steel wire 43 on basket frame 41, and during work, junk is opened in passage access to plant in the driving lower compression steel wire distortion of working fluid, and after circulation stops, deforming steel wire resets and seals passage, stops junk and realizes dragging for and obtain.
3, damping sleeve: formed by filter body 31, sieve plate 32, sheath 33 and the first steel wire 34, filter body 31 upper ends are the sieve plates 32 that are designed with a plurality of diameter 10mm, be used for filtering diameter and be greater than 10mm junk, bottom is the steel wire separation net that grid diameter is less than 10mm, the soft junks such as rubber that diameter are greater than to 10mm stop, and avoid it by sieve pore blockade.The first steel wire 34 is fixed on filter body 31 by sheath 33, and damping sleeve is used for guaranteeing that fluid passage is unimpeded, and small falling object and sand can pass through, and larger junk pulled in basketry.
4, overflow ball-and-seat: formed by guiding cap 21, spring 22, spool 23, valve seat 24 and valve body 25, the diameter range of mainly fishing for junk is 0.25-10mm, the particle size range of fishing for sand is 0.250.40mm, and can, by the fluid seepage in tubing string in well, avoid liquid to take well head contaminated environment out of.Guiding cap 21 is members that have external screw thread and center to have pilot hole, pilot hole is used for righting valve core rod 27, guarantee spool 23 and valve seat 24 center superpositions, in pilot hole surrounding, there is larger flowing hole, guiding cap is connected with valve body 25 by external screw thread, play the effect of spring base, spring 22 is sleeved on valve core rod 27, and under free state, maintaining valve is normally off.Spool 23 lower ends are that a sphere and valve body ball seat coincide closed channel, and valve core rod 27 coordinates and does centralized positioning with pilot hole, and spring 22 is enclosed within on valve core rod 27.Valve body 25 tops have internal thread to be used for fixing guiding cap 21, and centre has a ball seat to be used for coordinating with spool formation one way valve, and the seepage seam 26 that cuts many 0.2mm on valve seat 24 is used for the liquid in valve seat 24 top tubing strings to flow back in well.
When device is gone into the well, first top connection 1 is connected with drilling tool or tubing round thread, when device, transfer and stop transferring when from top of fish 10000mm, start ground cement car, adopt the anti-circulation well cleanup pattern of liquid, after returning liquid, outlet slowly transfers tubing string to top of fish position, after upper lifting pipe post 1000mm-2000mm, by speed faster, transfer to top of fish again, small falling object and sand enter lower shell 4 by basketry 5, damping sleeve 3 blocks larger junk and sand between cylindrical shell 4 and basketry 5, and the liquid after filtration returns out ground by overflow ball-and-seat 2.So repeatedly carry out multi-pass operation, then instrument is turned an angle, by 7 pairs of tops of fish of mill teeth structure, stir and creep into until operation completes on a small quantity, in termination of pumping, carry, complete fishing.
Claims (6)
1. a novel bottom hole falling article and sand setting cleaning fishing device, is characterized in that: comprise cylindrical shell with and the top connection that connects of upper end, overflow ball-and-seat, damping sleeve, the basketry being provided with successively from top to bottom in the mill teeth structure that lower end connects and cylinder lumen; Described mill teeth structure comprises the adapter sleeve of upper end and the zigzag moving tooth of lower end; Described basketry comprise peripheral ring-type basket support with and in be provided with by steel wire, intert the grid form; Described damping sleeve comprise outside tubular filter body with and inner chamber the upper end sieve plate, the inner chamber lower end that are provided be provided with by steel wire, intert the grid forming; Described overflow ball-and-seat comprise valve body with and the interior guiding cap being provided with successively from top to bottom, spool and valve seat; The central authorities that described guiding is emitted are provided with pilot hole, surrounding is provided with flowing hole; Described spool is seated on valve seat, spool central authorities be provided with valve core rod and its one end through described pilot hole, the other end through valve seat, on described valve core rod, be set with spring, its one end and guiding cap against, the other end and spool against.
2. novel bottom hole falling article according to claim 1 and sand setting cleaning fishing device, is characterized in that: described zigzag moving tooth surface paving is welded with wear-resisting YD alloy.
3. novel bottom hole falling article according to claim 1 and sand setting cleaning fishing device, is characterized in that: the grid diameter in described basketry is not more than 8mm.
4. novel bottom hole falling article according to claim 1 and sand setting cleaning fishing device, is characterized in that: described sieve plate diameter is 10mm, and the grid diameter in described damping sleeve is less than 10mm.
5. novel bottom hole falling article according to claim 1 and sand setting cleaning fishing device, is characterized in that: described guiding cap is connected with valve body by screw thread.
6. novel bottom hole falling article according to claim 1 and sand setting cleaning fishing device, is characterized in that: the seepage seam that cuts many 0.2mm on described valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195945.9U CN203822227U (en) | 2014-04-22 | 2014-04-22 | Novel device for clearing and salvaging fallen objects and deposited sand at bottom of well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195945.9U CN203822227U (en) | 2014-04-22 | 2014-04-22 | Novel device for clearing and salvaging fallen objects and deposited sand at bottom of well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822227U true CN203822227U (en) | 2014-09-10 |
Family
ID=51477740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195945.9U Expired - Fee Related CN203822227U (en) | 2014-04-22 | 2014-04-22 | Novel device for clearing and salvaging fallen objects and deposited sand at bottom of well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822227U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806188A (en) * | 2015-05-08 | 2015-07-29 | 中国石油天然气股份有限公司 | Underground fallen drilling part salvaging method |
| CN109113616A (en) * | 2017-06-26 | 2019-01-01 | 中国石油天然气股份有限公司 | Formation particle processing method |
| CN111173468A (en) * | 2020-01-03 | 2020-05-19 | 西南石油大学 | Hydraulic rock debris fishing tool for horizontal well |
| CN115341869A (en) * | 2021-05-14 | 2022-11-15 | 中国石油天然气股份有限公司 | Fishing tool for bottom plug of oil-gas well |
-
2014
- 2014-04-22 CN CN201420195945.9U patent/CN203822227U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806188A (en) * | 2015-05-08 | 2015-07-29 | 中国石油天然气股份有限公司 | Underground fallen drilling part salvaging method |
| CN104806188B (en) * | 2015-05-08 | 2017-05-10 | 中国石油天然气股份有限公司 | Underground fallen drilling part salvaging method |
| CN109113616A (en) * | 2017-06-26 | 2019-01-01 | 中国石油天然气股份有限公司 | Formation particle processing method |
| CN109113616B (en) * | 2017-06-26 | 2021-11-30 | 中国石油天然气股份有限公司 | Method for treating formation sand |
| CN111173468A (en) * | 2020-01-03 | 2020-05-19 | 西南石油大学 | Hydraulic rock debris fishing tool for horizontal well |
| CN115341869A (en) * | 2021-05-14 | 2022-11-15 | 中国石油天然气股份有限公司 | Fishing tool for bottom plug of oil-gas well |
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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 |
Granted publication date: 20140910 Termination date: 20170422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |