CN201318142Y - Milling and fishing integrated tool - Google Patents
Milling and fishing integrated tool Download PDFInfo
- Publication number
- CN201318142Y CN201318142Y CNU2008201246723U CN200820124672U CN201318142Y CN 201318142 Y CN201318142 Y CN 201318142Y CN U2008201246723 U CNU2008201246723 U CN U2008201246723U CN 200820124672 U CN200820124672 U CN 200820124672U CN 201318142 Y CN201318142 Y CN 201318142Y
- Authority
- CN
- China
- Prior art keywords
- spear
- hollow
- shoe
- fishing spear
- junk mill
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a downhole tool, in particular to a downhole milling and fishing integrated tool. The utility model adopts the scheme that the downhole milling and fishing integrated tool comprises an upper connector, a lengthened cylinder, a hollow grind shoe and a spear; a groove is formed on the upper surface of the hollow grind shoe; a lug is formed at the tail end of the spear; the rod body of the spear penetrates through the hollow grind shoe; the lug is clamped in the groove; the spear is fixed with the hollow grind shoe through the shear pin at the tail part; and the lengthened cylinder is mounted between the hollow grind shoe and the upper connector. The utility model adopts the scheme that the grind shoe and the spear are dropped at one time, the spear is enabled to grasp the lower part of the central tube of a plugging device, and then the drilling tool is dropped to shear a pin, so as to separate the spear from the hollow grind shoe; when the upper part of a packer is ground out, the remaining part is fished directly; when the grind shoe is found to be out of action, the spear can be withdrawn, and the grind shoe is replaced, thereby saving one-time fishing time; and when being connected below the clamped point, the expensive instruments can be prevented from dropping into the bottom of the well. The installation is convenient, the shear connection of the hollow shoe and the spear can ensure that the spear is dropped into the center tube of the packer successfully, thereby carrying out fishing and releasing the grip of the milling shoe and the spear; the needed torque can be effectively transmitted through the docking method of concave-convex groove; and the effective area between the spear rod and the hollow grind shoe meets the requirements of displacement of circularly carried metal particles.
Description
Technical field
The present invention relates to a kind of downhole tool, be specifically related to milling of a kind of down-hole and fishing tool.
Background technology
When underground work owing to operate miss or other reason, under bore midway packer and be hampered earlier and then blocked, also may be to use the well of permanent packer to need well workover, packer has stopped up the passage of oil well, make oil well have no idea exploiting, in order to open the oil well passage, must partly grind off the packer that is blocked, could rise the tubing string of bottom out.Traditional solution is with junk mill the position of meeting card to be ground off earlier, and following tubing string is fallen the shaft bottom, and then fishing spear is pulled remaining tubing string come out down, and such method need be descended twice tubing string, relatively loses time.
The utility model content
In order to address the above problem, this programme provides a kind of device of not only can milling but also can salvage, and makes operation once finish, and this programme adopts mode as follows:
Integrated device is salvaged in the milling of a kind of down-hole, comprise top connection, lengthening tube, hollow junk mill and reversible fishing spear, its improvement is, hollow junk mill upper surface is fluted, described fishing spear afterbody has lug, and described fishing spear shaft passes hollow junk mill, and described lug snaps in the groove, described fishing spear is fixed together by the shear pin and the hollow junk mill of afterbody, and described lengthening tube is installed between hollow junk mill and the top connection.
A kind of optimal way of this programme, described fishing spear are reversible slips fishing spear.Described fishing spear rear end is equipped with extension bar.
Another optimal way of this programme, described reversible fishing spear afterbody lug and hollow junk mill groove are corresponding.
An optimal way again of this programme, the length of the length of described lengthening tube and reversible fishing spear adapts.Described shear pin fixed point is two.
The another optimal way of this programme, described hollow junk mill groove are the recessed circle of diameter greater than hollow junk mill internal diameter, and described fishing spear afterbody has the circle projection of diameter greater than shaft, and described projection snaps in recessed circle.
This programme adopts the integral type junk mill, catches the latter half of plugging device in polishing, after top is ground off, directly the part that will be left salvages out, but also can change junk mill halfway, and does not influence the use of fishing spear, saved the time that secondary is salvaged, and easy for installation.The shear pin formula of hollow junk mill and fishing spear is connected, and can guarantee to drag for lance and arrive in the packer central tube down smoothly, and implement slipping out of the hand of salvaging, junk mill and fishing spear; The docking calculation of tongue and groove can effectively transmit the moment of torsion that needs; Drag for the effective area between lance bar and the hollow junk mill, satisfied the discharge capacity requirement that metallic particles is carried in circulation.
Description of drawings
Fig. 1 junk mill is salvaged the integrated device structural representation
Hollow junk mill groove of Fig. 2 and the protruding circle schematic diagram of fishing spear
The specific embodiment
Employing is threaded togather top connection 4 and lengthening tube 3 utilization earlier in this programme, then fishing spear 5 is penetrated hollow junk mill 1, again hollow junk mill 1 is connected with lengthening tube 3 again, connected mode can adopt engage thread, top connection 4 other ends are connected with drill collar, rear end face at hollow junk mill 1 radially has oval groove 7, in fishing spear 7 masthead portions corresponding lug 6 is arranged, the lug 6 of its rear end snaps in the groove 7 of hollow junk mill 1 rear end face after fishing spear 5 inserts hollow junk mill 1, have the pin hole 8 relative at the afterbody of hollow junk mill 1 with fishing spear 5, pin hole 8 is two, inserting shear pin is fixed together hollow junk mill 1 with fishing spear 5, container cavity when the effect of lengthening tube 3 mainly is to retreat as fishing spear 5, therefore the length of its length and fishing spear 5 adapts, when hollow junk mill arrives the precalculated position 1 time, utilizing suspending weight to judge whether fishing spear 5 has dragged for obtains, obtain then strengthen the power of putting forward if drag for, make the abundant distending of slips of fishing spear 5, press down then and cut off shear pin, this moment, fishing spear 5 separated with hollow junk mill 1, fishing spear 5 is motionless, transfer hollow junk mill 1 and carry out milling to top of fish turn on pump rotation drilling tool, after the intact packer of milling is met the position, card division, following tubing string falls because of deadweight drives fishing spear 5, when lug 6 is fallen hollow junk mill 1 upper surface, be blocked, realize salvaging following tubing string.If not unfreezing then continue milling to the lower slips of packer repeats to propose action on above-mentioned.
If need to change hollow junk mill 1 midway, then go up in the groove 7 that carrying handle lug 6 rotates to junk mill, just changeing drilling tool fishing spear 5 is withdrawed from, judge whether unfreezing according to suspending weight, if fishing spear 5 slips withdraw from fastening state, then fishing spear 5 leaves the holding section with outside the hollow junk mill 1 referred well.
As shown in Figure 2, hollow junk mill can also not adopt recess in the rear end and adopt a form of enclosing groove, groove diameter is greater than the internal diameter of hollow junk mill, the fishing spear afterbody has the circle projection of the diameter corresponding with groove greater than shaft, the fishing spear projection snaps in the recessed circle of hollow junk mill in use, utilizes shear pin to fix again.
Fixing shear pin can be installed 2-8 on demand.
Fishing spear preferably adopts slip-type.
Fishing spear 5 will rotate to top dead-centre to slips before going into well, hollow junk mill 1 goes into will in time install self-styled behind the well or build annular space, prevent the annular space junk, when fishing spear 5 is slipped out of the hand, the above distance of 200mm must be arranged between hollow junk mill 1 and the fish end face, the activity otherwise drilling tool is had no idea, can abovely carry drilling tool once every one hour during boring mill, determine the safety of fishing spear, in order effectively to remove the metallic particles that grinds, prevent to precipitate bit freezing, will use fishing cup in the drilling tool structure, recommend to be installed in about 10m position, junk mill top.
Claims (7)
1, integrated instrument is salvaged in a kind of down-hole milling, comprise top connection (4), lengthening tube (3), hollow junk mill (1) and fishing spear (5), it is characterized in that, hollow junk mill (1) upper surface fluted (7), described fishing spear (5) afterbody has lug (6), described fishing spear (5) shaft passes hollow junk mill (1), described lug (6) snaps in the groove (7), described fishing spear (5) is fixed together by the shear pin and the hollow junk mill (1) of afterbody, and described lengthening tube (3) is installed between hollow junk mill (1) and the top connection (4).
2, integrated instrument is salvaged in a kind of down-hole milling as claimed in claim 1, it is characterized in that, described fishing spear (5) is the slip-type fishing spear.
3, integrated instrument is salvaged in a kind of down-hole milling as claimed in claim 1 or 2, it is characterized in that, described fishing spear (5) rear end is equipped with extension bar (9).
4, integrated instrument is salvaged in a kind of down-hole milling as claimed in claim 3, it is characterized in that, described slip-type fishing spear (5) afterbody lug (6) and hollow junk mill (1) groove (7) are corresponding one by one.
5, integrated instrument is salvaged in a kind of down-hole milling as claimed in claim 4, it is characterized in that, the length of described lengthening tube (3) is corresponding with the length of slip-type fishing spear (5).
6, integrated instrument is salvaged in a kind of down-hole milling as claimed in claim 5, it is characterized in that, described shear pin fixed qty be minimum be 2.
7, integrated instrument is salvaged in a kind of down-hole milling as claimed in claim 1, it is characterized in that, described hollow junk mill (1) groove (7) is the recessed circle (11) of diameter greater than hollow junk mill (1) internal diameter, described fishing spear (5) afterbody has the circle projection (10) of diameter greater than shaft, and described projection (10) snaps in recessed circle (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201246723U CN201318142Y (en) | 2008-12-17 | 2008-12-17 | Milling and fishing integrated tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201246723U CN201318142Y (en) | 2008-12-17 | 2008-12-17 | Milling and fishing integrated tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318142Y true CN201318142Y (en) | 2009-09-30 |
Family
ID=41196908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201246723U Expired - Lifetime CN201318142Y (en) | 2008-12-17 | 2008-12-17 | Milling and fishing integrated tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318142Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389543A (en) * | 2014-09-24 | 2015-03-04 | 新疆华油油气工程有限公司 | Milling and fishing integrated well repairing tool |
| CN104747113A (en) * | 2013-12-31 | 2015-07-01 | 贵州高峰石油机械股份有限公司 | Packer in recycling oil well air drill |
| CN106468149A (en) * | 2015-08-20 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of salvaging structure |
| CN109252823A (en) * | 2018-09-20 | 2019-01-22 | 中国石油天然气股份有限公司 | A kind of synchronous grasping mechanism of multiple wing junk mill and application method |
| CN111691842A (en) * | 2020-06-19 | 2020-09-22 | 中国石油大学(华东) | Cutting and fishing method |
-
2008
- 2008-12-17 CN CNU2008201246723U patent/CN201318142Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747113A (en) * | 2013-12-31 | 2015-07-01 | 贵州高峰石油机械股份有限公司 | Packer in recycling oil well air drill |
| CN104389543A (en) * | 2014-09-24 | 2015-03-04 | 新疆华油油气工程有限公司 | Milling and fishing integrated well repairing tool |
| CN106468149A (en) * | 2015-08-20 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of salvaging structure |
| CN109252823A (en) * | 2018-09-20 | 2019-01-22 | 中国石油天然气股份有限公司 | A kind of synchronous grasping mechanism of multiple wing junk mill and application 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 |
| CN111691842A (en) * | 2020-06-19 | 2020-09-22 | 中国石油大学(华东) | Cutting and fishing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |