CN203161150U - Side fisher for fishing underground broken rod - Google Patents
Side fisher for fishing underground broken rod Download PDFInfo
- Publication number
- CN203161150U CN203161150U CN 201220638753 CN201220638753U CN203161150U CN 203161150 U CN203161150 U CN 203161150U CN 201220638753 CN201220638753 CN 201220638753 CN 201220638753 U CN201220638753 U CN 201220638753U CN 203161150 U CN203161150 U CN 203161150U
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- CN
- China
- Prior art keywords
- rod
- drilling
- cylindrical shell
- opening slips
- hypomere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a side fisher for fishing an underground broken rod. The side fisher comprises a slotting barrel, wherein a drilling rod connector connected with a drilling rod or a flexible toggle is arranged at the top of the slotting barrel; and an opening slip is arranged at the bottom of the slotting barrel. According to the side fisher, the opening slip at the bottom of the slotting barrel approaches to the broken rod from the side face, a bayonet of the opening slip is clamped on a thinner rod body of the broken rod, the drilling rod is pulled upwards to drive a thicker part of the broken rod to enter a middle section open slot of the slotting barrel, and the broken rod is pulled out of a drilling mouth. When the geometric shape of the top of the broken rod is irregular, the fishing operation can be conducted directly without milling, and the side fisher solves the problem that the broken rod is difficult to fish when the geometric shape of the top of the broken rod is irregular. The time required by accident handling is shortened, the number of equipment required by the accident handling is reduced, the accident handling process is simplified greatly, the accident handling time is shortened greatly, the drilling efficiency is improved, and the drilling cost is saved. Particularly when the milling operation cannot be conducted on a 'paunchy' section, an underground accident can be removed quickly, and the heavy loss due to scrap of a whole well is avoided.
Description
Technical field
The utility model relates to a kind ofly to be salvaged the side that the disconnected bar in down-hole uses and drags for device, belongs to the disconnected bar fishing tool technical field in down-hole in the drilling engineering.
Background technology
Along with the continuous development of petroleum and natural gas production technique, drilling depth is constantly deepened, and this just causes drilling failure frequent and complicated more, and a lot of drilling failures can not be salvaged with conventional fisher.
At present in the drilling engineering, if the drill rod breaking accident, the conventional practice is to adopt from well head fishing tool to be put into the down-hole and carry out fishing, and the disconnected masthead portion that fishing tool normally clips fracture pulls it.The fishing tool of this routine is had relatively high expectations to disconnected bar fracture location, requires the top of disconnected bar to have the geometric shape of rule relatively.Do not have the geometric shape of rule as resolute masthead portion, the mode that then must adopt milling could be salvaged after with irregular part elimination, and this mode takes time and effort, and downhole condition is had relatively high expectations.When particularly disconnected masthead portion is in well " pregnant " section, can't carry out milling operation at all.After this situation occurring, just can only abandon lower drilling tool, adopt window sidetracking or drilling well is scrapped, cause great manpower and materials waste.
Summary of the invention
The purpose of this utility model is, provides a kind of and salvages the side that the disconnected bar in down-hole uses and drag for device.Disconnected masthead portion shape is not had any requirement, need not adopt the mode of milling can directly carry out fishing; To the less demanding of masthead portion and well that break, can adapt to the fishing of " pregnant " borehole segments.To overcome the deficiencies in the prior art.
The technical solution of the utility model:
A kind ofly salvage the side that the disconnected bar in down-hole uses and drag for device, comprise the fluting cylindrical shell, fluting cylindrical shell top is provided with the tool joint that is connected usefulness with drilling rod or bendable toggle, is provided with the opening slips bottom the fluting cylindrical shell.
Aforementioned side is dragged in the device, and described fluting cylindrical shell is cylindric, and the top of cylinder is provided with the internal thread that is connected with tool joint, and in the cylinder, hypomere is provided with open slot, the depth D of stage casing open slot is greater than the cylinder radius R, and the depth d of hypomere open slot is less than the cylinder radius R; Be provided with the opening slips in the hypomere open slot; The upper surface of hypomere open slot is provided with lead-in chamfered.
Aforementioned side is dragged in the device, described opening slips to be shaped as open circles tubular, the cross sectional shape of opening slips is C shape; The cylindrical of pipe epimere is the face of cylinder, and the cylindrical of pipe hypomere is taper seat; The endoporus of opening slips is stepped hole, and epimere is large diameter hole, and hypomere is small diameter bore, and large diameter hole is connected through chamfered transition with small diameter bore; The hole wall of small diameter bore is provided with one group of elastic groove that is uniformly distributed along the circumference; The hole wall of small diameter bore is provided with anti-slop serrations; The cylindrical of opening slips is provided with keyway.
Aforementioned side is dragged in the device, and the bottom of described fluting cylindrical shell is provided with the guiding key, and the keyway on guiding key and the opening slips cylindrical is slidingly connected.
Aforementioned side is dragged in the device, and the fluting cylindrical shell of described opening slips top is provided with stop screw.
Compared with prior art, the utility model approaches disconnected bar from the side by the opening slips that is located at fluting cylindrical shell bottom, the bayonet socket of opening slips is stuck on the thinner body of rod of disconnected bar, upwards spur the disconnected bar thicker part branch of drilling rod drive and enter in the stage casing open slot of fluting cylindrical shell, the bar that will break is pulled out the drilling well mouth.When disconnected masthead portion geometric shape is irregular, need not adopt the mode of milling can directly carry out fishing, reduce required time and the equipment of processing accident, simplified the accident processing procedure greatly, reduce break down time, improved drilling efficiency, saved drilling cost.Solved the salvaging difficult problem when disconnected masthead portion geometric shape is irregular.Particularly can solve down-hole accident fast in " pregnant " section can't carry out milling operation the time, prevent that whole mouthful of well from scrapping the heavy losses that cause.
Description of drawings
Fig. 1 is the schematic perspective view that side is dragged for device;
Fig. 2 is the floor map of Fig. 1;
Fig. 3 is the structural representation of fluting cylindrical shell;
Fig. 4 is the structural representation of opening slips;
Fig. 5 is schematic diagram of the present utility model;
1. and vertical view 2. Fig. 6 is that step among Fig. 5;
Fig. 7 is step vertical view 3., 4. and 5. among Fig. 5.
Being labeled as among the figure: 1-fluting cylindrical shell, 2-tool joint, 3-opening slips, 4-stage casing open slot, 5-hypomere open slot, 6-lead-in chamfered, the 7-face of cylinder, 8-taper seat, 9-large diameter hole, 10-small diameter bore, 11-inclined-plane, 12-elastic groove, 13-anti-slop serrations, 14-keyway, 15-guiding key, 16-stop screw, 17-side are dragged for device, 18-drilling well, the disconnected bar of 19-.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but not as to any restriction of the present utility model.
A kind ofly salvage the side that the disconnected bar in down-hole uses and drag for device, as depicted in figs. 1 and 2.Comprise fluting cylindrical shell 1, fluting cylindrical shell 1 top is provided with the tool joint 2 that is connected usefulness with drilling rod or bendable toggle, and fluting cylindrical shell 1 bottom is provided with opening slips 3.Described fluting cylindrical shell 1 as shown in Figure 3.Fluting cylindrical shell 1 is cylindric, the top of cylinder is provided with the internal thread that is connected with tool joint, in the cylinder, hypomere is provided with open slot, the depth D of stage casing open slot 4 is greater than cylinder radius R (see figure 2), the depth d of hypomere open slot 5 is less than cylinder radius R (see figure 2); Be provided with opening slips 3 in the hypomere open slot 5; The upper surface of hypomere open slot 5 is provided with lead-in chamfered 6.Described opening slips 3 as shown in Figure 7, opening slips 3 to be shaped as open circles tubular, the cross sectional shape of opening slips 3 is C shape; The cylindrical of pipe epimere is the face of cylinder 7, and the cylindrical of pipe hypomere is taper seat 8; The endoporus of opening slips 3 is stepped hole, and epimere is large diameter hole 9, and hypomere is small diameter bore 10, and 11 transition are connected large diameter hole 9 through the inclined-plane with small diameter bore 10; The hole wall of small diameter bore 10 is provided with one group of elastic groove that is uniformly distributed along the circumference 12; The hole wall of small diameter bore 10 is provided with anti-slop serrations 13; The cylindrical of opening slips 3 is provided with keyway 14.The bottom of fluting cylindrical shell 1 is provided with guiding key 15(and sees Fig. 3), the keyway 14 on guiding key 15 and opening slips 3 cylindricals is slidingly connected.The fluting cylindrical shell 1 of described opening slips 3 tops is provided with stop screw 16.
The course of work of the present utility model and principle
Extremely shown in Figure 7 as Fig. 5.The utility model drags for device 17 bar 19 that will break by side and salvages in drilling well 18.Side is dragged for device as shown in Figure 4, comprises fluting cylindrical shell 1, and fluting cylindrical shell 1 top is provided with the tool joint 2 that is connected usefulness with drilling rod or bendable toggle, and fluting cylindrical shell 1 bottom is provided with opening slips 3; Salvage when breaking bar 19, by drilling rod side being dragged for device 17 puts to disconnected bar 19 positions (seeing that the step of Fig. 5 1.) from the well head of drilling well 18, utilize the drilling rod offside to drag for device 17 then and apply lateral force or revolving force, make side drag for device 17 and approach step that disconnected bar 19(sees Fig. 5 from the side 2.), the bayonet socket of opening slips 3 is stuck on the thinner body of rod of disconnected bar 19 (seeing that the step of Fig. 5 3.), upwards spur drilling rod and drive the stage casing open slot 4 interior (seeing that the step of Fig. 5 4.) that disconnected bar 19 thicker part branches enter fluting cylindrical shell 1, disconnected bar 19 is pulled out the well head (seeing that the step of Fig. 5 5.) of drilling well 18.The top of fluting cylindrical shell 1 and opening slips 3 junctions is provided with lead-in chamfered 6(and sees Fig. 2 and Fig. 3), by lead-in chamfered 6 and cooperating that disconnected bar 19 top thicker parts divide, realize the automatic centering function of disconnected bar 19, drive disconnected bar 19 thicker part branches and enter in the stage casing open slot 4 of fluting cylindrical shell 1.Opening slips 3 is connected with 1 basal sliding of fluting cylindrical shell; And by guiding key 15 guiding and transmission moment of torsion (seeing Fig. 2 and Fig. 3).The outer conical surface of opening slips 3 cooperates with interior circle or the internal conical surface of fluting cylindrical shell 1 bottom, at opening slips 3 elastic groove 12(is set simultaneously and sees Fig. 4); After opening slips 3 blocked disconnected bar 19, opening slips 3 moved down under the effect of disconnected bar 19 deadweights, and opening slips 3 internal diameters are shunk automatically, prevented that disconnected bar 19 from coming off from opening slips 3.The opening slips prevents that by the pawl of inner headed face disconnected bar from sliding in the opening slips.
To some supplementary notes of the present utility model
" pregnant " described in background information section, refer to have in the drilling well one section diameter become suddenly big form than the large space section.Disconnected bar is not necessarily vertical in " pregnant " section, also can tilt, but gradient generally can be very not big.Because epimere is the minor diameter well head, so the grinding tool that puts down from well head is difficult to approach the fracture location of disconnected bar, so can't grinding.
The used drilling rod front of drilling well is equipped with drill bit, the diameter of general drill bit is greater than the diameter of drilling rod, so a gap is arranged between drilling rod and the borehole wall, side of the present utility model is dragged for device and can be put from the gap between drilling rod and the borehole wall to disconnected bar position.
Two ends of drill be owing to need be connected with other drilling rod in addition, thus the two ends of drill diameter than middle the body of rod slightly larger in diameter of drilling rod some, and the body of rod section of drilling rod centre is longer, is stuck than being easier to.Therefore opening slips 3 of the present utility model is to block the middle body of rod position of disconnected bar, in the process of upwards drawing, makes the drilling rod automatic capturing vertically pull out well head.
If run into " pregnant " section, can drag for the device top in side of the present utility model and connect a bendable toggle, make side drag for device and can in certain angle, tilt to snap in to break on the body of rod of bar.The bendable toggle is existing instrument.
Side of the present utility model is dragged for device can be by following parameter designing and making
1 is suitable for well 9 1/2 ";
2 salvage fish 5 " drilling rod;
3 joint screw thread NC50;
4 maximum tensile load 1000kN;
200 ℃ of 5 maximum operating temperatures;
6 are suitable for well temperature-40 ℃～150 ℃;
The degree of depth is salvaged less than 1500mm by the disconnected masthead portion of 7 distances.
Claims (5)
1. salvage the side that the disconnected bar in down-hole uses and drag for device for one kind, it is characterized in that: comprise fluting cylindrical shell (1), fluting cylindrical shell (1) top is provided with the tool joint (2) that is connected usefulness with drilling rod or bendable toggle, is provided with opening slips (3) bottom the fluting cylindrical shell (1).
2. drag for device according to the described side of claim 1, it is characterized in that: described fluting cylindrical shell (1) is for cylindric, the top of cylinder is provided with the internal thread that is connected with tool joint, in the cylinder, hypomere is provided with open slot, the depth D of stage casing open slot (4) is greater than the cylinder radius R, and the depth d of hypomere open slot (5) is less than the cylinder radius R; Be provided with opening slips (3) in the hypomere open slot (5); The upper surface of hypomere open slot (5) is provided with lead-in chamfered (6).
3. drag for device according to the described side of claim 2, it is characterized in that: described opening slips (3) to be shaped as open circles tubular, the cross sectional shape of opening slips (3) is C shape; The cylindrical of pipe epimere is the face of cylinder (7), and the cylindrical of pipe hypomere is taper seat (8); The endoporus of opening slips (3) is stepped hole, and epimere is large diameter hole (9), and hypomere is small diameter bore (10), and (11) transition is connected large diameter hole (9) through the inclined-plane with small diameter bore (10); The hole wall of small diameter bore (10) is provided with one group of elastic groove that is uniformly distributed along the circumference (12); The hole wall of small diameter bore (10) is provided with anti-slop serrations (13); The cylindrical of opening slips (3) is provided with keyway (14).
4. drag for device according to the described side of claim 3, it is characterized in that: the bottom of described fluting cylindrical shell (1) is provided with guiding key (15), and the keyway (14) on guiding key (15) and opening slips (3) cylindrical is slidingly connected.
5. drag for device according to the described side of claim 4, it is characterized in that: the fluting cylindrical shell (1) of described opening slips (3) top is provided with stop screw (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638753 CN203161150U (en) | 2012-11-28 | 2012-11-28 | Side fisher for fishing underground broken rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638753 CN203161150U (en) | 2012-11-28 | 2012-11-28 | Side fisher for fishing underground broken rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161150U true CN203161150U (en) | 2013-08-28 |
Family
ID=49022342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220638753 Withdrawn - After Issue CN203161150U (en) | 2012-11-28 | 2012-11-28 | Side fisher for fishing underground broken rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775017A (en) * | 2012-11-28 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Fishing method for broken rod and side fishing device used in method |
-
2012
- 2012-11-28 CN CN 201220638753 patent/CN203161150U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775017A (en) * | 2012-11-28 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Fishing method for broken rod and side fishing device used in method |
| CN103775017B (en) * | 2012-11-28 | 2016-04-13 | 贵州高峰石油机械股份有限公司 | Device is dragged in a kind of Refloatation method and side used of disconnected bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |