CN204098838U - A kind of cover milling fishing integrated workover tool - Google Patents
A kind of cover milling fishing integrated workover tool Download PDFInfo
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- CN204098838U CN204098838U CN201420551386.0U CN201420551386U CN204098838U CN 204098838 U CN204098838 U CN 204098838U CN 201420551386 U CN201420551386 U CN 201420551386U CN 204098838 U CN204098838 U CN 204098838U
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Abstract
The open a kind of cover milling fishing integrated workover tool of the utility model, comprise top connection, two female joint, transit joint, lug pin, anti-lost shaft, shear pin, milling shoe, anti-lost lance watt, release ring and guide shoe, described top connection is threaded two female joint, described top connection lower end is provided with twin-stage pin thread, described pair of female joint upper end is provided with the twin-stage box with top connection coupling, described pair of female joint is threaded transit joint, be threaded in the middle part of described transit joint and milling shoe, the anti-lost shaft linked together by shear pin and milling shoe is inserted with in described milling shoe, described two the lug pins being provided with spot welding in anti-lost shaft upper end and fixing, described anti-lost shaft has gingival cyst of mucous gland in the newborn external screw thread, release ring and guide shoe external screw thread at bright and clean section of next coming in order, described anti-lost shaft bottom is threaded with described anti-lost lance watt.There is rational in infrastructure, that one-trip string completes fishing sleeve milling construction feature.
Description
Technical field
The utility model belongs to workover tool, is specifically related to cover milling fishing integrated workover tool.
Background technology
Packer is the important downhole tool of oil-gas mining, Main Function protects the sleeve pipe of low grade of steel from the corrosion of hazardous medium and external force to the squeeze and destroy of sleeve pipe, due to exhaustion or the formation sand production of stratum energy, the tubing string in well is needed to rise out, but along with the prolongation packer of recovery time may be malfunctioning, cause and can not reclaim, particularly the theory of permanent packer design just can not be taken out, want that these packers are taken out the most direct effective method to cut tubing string on packer top exactly, first top tubing string is tripped out, try every possible means again to process packer, just the tubing string below packer can be salvaged out.Along with China's natural gas well is developed and the construction of gas storage on a large scale, permanent packer obtains large-scale use, how processing these permanent packers efficiently has put in face of well puller author, special in ultra-deep Oil/gas Well, very big error is also existed to the cutting of tubing string, the general oil pipe all remaining 2 ~ 4 meters, first the remaining oil pipe in tubing string top must be ground off when the problem caused is well workover, just packer can be ground, descend fishing tool that the tubing string below packer is salvaged out after having ground packer again, such well workover mode is not only lost time, and increase cost, because milling residue oil pipe can produce a large amount of iron particles, some can be deposited on top of fish, cause the concrete degree of depth distortion of top of fish, milling is constructed and becomes more complicated.The problem that this case will solve first drags for oil pipe, grinds less as far as possible or do not grind oil pipe, directly overlaps milling to packing element, carries and just can salvage all tubing strings directly.
Utility model content
The utility model is intended to the defect overcoming prior art, a kind of cover milling fishing integrated workover tool is provided, there is rational in infrastructure, one-trip string and complete fishing sleeve milling construction, and the arbitrary way of milling shoe can be changed in work progress, reach the object that construction is reliable, cost-saving.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of cover milling fishing integrated workover tool, comprise top connection, two female joint, transit joint, lug pin, anti-lost shaft, shear pin, milling shoe, anti-lost lance watt, release ring and guide shoe, described top connection is threaded two female joint, described top connection lower end is provided with twin-stage pin thread, described pair of female joint upper end is provided with the twin-stage box with top connection coupling, described pair of female joint is threaded transit joint, be threaded in the middle part of described transit joint and milling shoe, the anti-lost shaft linked together by shear pin and milling shoe is inserted with in described milling shoe, described two the lug pins being provided with spot welding in anti-lost shaft upper end and fixing, described anti-lost shaft has gingival cyst of mucous gland in the newborn external screw thread, release ring and guide shoe external screw thread at bright and clean section of next coming in order, described anti-lost shaft bottom is threaded with described anti-lost lance watt.
Further, described top connection upper end is provided with and sends into the box thread of drilling tool coupling.
Further, the described pair of female joint lower end inside is provided with one expanding bright and clean section, and bright and clean section of upper end offers twin-stage box.
Further, described transit joint upper end is provided with the twin-stage pin thread be connected with two female joint lower end, and transit joint lower end is provided with twin-stage box.
Further, between described two lug pin outer ends, length is less than casing section mill internal diameter 2 millimeters.
Further, described anti-lost shaft adopts hollow structure, upper end is drilled with lug pin hole, and middle part raised step is milled with cotter slot, raised step bottom is provided with undergauge step A successively, has externally threaded bright and clean section of gingival cyst of mucous gland in the newborn, bright and clean section of undergauge, be provided with external screw thread undergauge section again.
Further, described milling shoe adopts hollow design, and described milling shoe upper end circumference is milled with " J " type groove, and described " J " type flute length slot part is opening groove, and short slot part is closed slots; Be provided with the twin-stage male thread matched with the box thread of transit joint in the middle part of described milling shoe, be provided with bright and clean section in twin-stage male thread lower end, be evenly provided with pin hole bright and clean section of circumference, described milling shoe bottom paving weldering carbide alloy.
Further, described anti-lost lance watt is provided with gingival cyst of mucous gland in the newborn internal thread, and a described anti-lost lance watt outside is provided with sawtooth and salvages screw thread.
Further, described guide shoe top is provided with internal thread, and lower end outside is inclined-plane undergauge, and guide shoe inside adopts hollow design.
Compared with prior art, the utility model has following beneficial effect:
The utility model can rinse top of fish inside before fishing spear enters top of fish.Anti-lost shaft step A can limit the length inserted, and avoids and inserts dark and made pleasant can not transposition.Midway can discharge fishing spear and carry out replacing milling shoe.The iron filings that milling produces can be reduced to greatest extent, improve efficiency of construction.Anti-lost lance watt length is 1.5 times of standard lance watt, and grappling is reliable.By the cooperation of two female joint and transit joint, can adjusting sleeve milling tube length degree arbitrarily.
Accompanying drawing explanation
Fig. 1 be the utility model cover milling fishing integrated workover tool enter well view;
Fig. 2 is that the casing section mill of the utility model cover milling fishing integrated workover tool frees view to fishing spear;
Fig. 3 is that view is freed in the midway of the utility model cover milling fishing integrated workover tool;
Fig. 4 is milling shoe " J " the type groove planar development schematic diagram of the utility model cover milling fishing integrated workover tool.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
As Figure 1-3, a kind of cover milling fishing integrated workover tool, comprise top connection 1, two female joint 2, transit joint 3, lug pin 4, anti-lost shaft 5, shear pin 6, milling shoe 7, anti-lost lance watts 8, release ring 9 and guide shoe 10, described top connection 1 is threaded two female joint 2, described top connection lower end is provided with twin-stage pin thread, and described top connection 1 upper end is provided with and sends into the box thread of drilling tool coupling.Described pair of female joint 2 upper end is provided with the twin-stage box mated with top connection 1, and described pair of female joint 2 lower end inside is provided with one expanding bright and clean section, and bright and clean section of upper end offers twin-stage box.Described pair of female joint 2 is threaded transit joint 3, is threaded in the middle part of described transit joint 3 and milling shoe 7, and described transit joint 3 upper end is provided with the twin-stage pin thread be connected with two female joint 2 lower end, and transit joint 3 lower end is provided with twin-stage box.The anti-lost shaft 5 linked together by shear pin 6 and milling shoe 7 is inserted with in described milling shoe 7, described milling shoe 7 adopts hollow design, described milling shoe 7 upper end circumference is milled with " J " type groove (as Fig. 4), described " J " type flute length slot part is opening groove 71, and short slot part is closed slots 72; Be provided with the twin-stage male thread matched with the box thread of transit joint 3 in the middle part of described milling shoe 7, be provided with bright and clean section in twin-stage male thread lower end, be evenly provided with pin hole bright and clean section of circumference, described milling shoe 7 bottom paving weldering carbide alloy.Described two the lug pins 4 being provided with spot welding in anti-lost shaft 5 upper end and fixing, between described two lug pin 4 outer ends, length is less than casing section mill internal diameter 2 millimeters.Described anti-lost shaft 5 bottom and described anti-lost lance watts 8 is threaded; Described anti-lost lance watts 8 is provided with gingival cyst of mucous gland in the newborn internal thread, is provided with sawtooth and salvages screw thread outside described anti-lost lance watts 8.Described anti-lost shaft 5 adopts hollow structure, and upper end is drilled with lug pin hole, and middle part raised step is milled with cotter slot, raised step bottom is provided with undergauge step A successively, has externally threaded bright and clean section of gingival cyst of mucous gland in the newborn, bright and clean section of undergauge, be provided with external screw thread undergauge section again.Described anti-lost shaft 5 bottom has gingival cyst of mucous gland in the newborn external screw thread successively and is socketed with release ring 9 and guide shoe 10 successively.Described guide shoe top is provided with internal thread, and lower end outside is inclined-plane undergauge, and guide shoe 10 inside adopts hollow design.
Watt 8 derotations of anti-lost lance are enclosed within anti-lost shaft 5, and are rotated in place; Release ring 9 is inserted in bright and clean section of anti-lost shaft gingival cyst of mucous gland in the newborn thread portions; Guide shoe 10 and anti-lost shaft are threaded; Anti-lost shaft 5 is inserted in milling shoe 7, the anti-lost cotter slot of shaft 5 raised section and the pin hole of milling shoe 7 is aligned, shear pin 6 is screwed in the pin hole of milling shoe 7, and be inserted in the cotter slot of anti-lost shaft 5; Connect the twin-stage button of top connection 1 and two female joint 2; Connect the twin-stage button of two female joint 2 and transit joint 3; The twin-stage connecting transit joint 3 and milling shoe 7 is buckled, and carries out covering protection to shear pin 6, assembles complete.
As shown in Figure 1, enter well normal condition, anti-lost lance watts 8 is positioned at the top of gingival cyst of mucous gland in the newborn screw thread, the opening groove of lug is positioned at " J " type groove.
As shown in Figure 2, implement to salvage to fish (fall into the article under oil well, be commonly called as fish), casing section mill is freed fishing spear
Slowly transfer at distance fish 2-3 rice turn on pump and rinse fish, find that pump pressure raises suddenly, stop circulation, carry slowly, determine that salvaging successful subsequent is carried on continuous, the design load (this case is 150KN) that load is increased to shear pin always cuts off pin, and fishing spear is temporarily locked in oil pipe 11, transfers drilling tool, lug pin is in casing section mill, casing section mill and fishing spear are freed, and carry out cover milling construction, after the complete packing element of cover milling, fish moves down, lug is fallen on milling shoe again, trips out cover and drags for integrated tool, fish can be taken to ground.
As shown in Figure 3, cover drag for integrated tool midway free
When judging that milling shoe lost efficacy, on carry drilling tool, make lug automatically can enter " J " groove, derotation tubing string 1/4 encloses, and keeps moment of torsion to transfer tubing string, the short groove of lug enters " J " groove, continue to transfer pressurization 30KN, positive rotation tubing string, makes anti-lost lance watt arrive release ring place, above carries can tripping out cover and dragging for integrated tool.
The foregoing is only and embodiment of the present utility model is described; be not limited to the utility model; for a person skilled in the art; all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a cover milling fishing integrated workover tool, comprise top connection, two female joint, transit joint, lug pin, anti-lost shaft, shear pin, milling shoe, anti-lost lance watt, release ring and guide shoe, it is characterized in that: described top connection is threaded two female joint, described top connection lower end is provided with twin-stage pin thread, described pair of female joint upper end is provided with the twin-stage box with top connection coupling, described pair of female joint is threaded transit joint, be threaded in the middle part of described transit joint and milling shoe, the anti-lost shaft linked together by shear pin and milling shoe is inserted with in described milling shoe, described two the lug pins being provided with spot welding in anti-lost shaft upper end and fixing, described anti-lost shaft has gingival cyst of mucous gland in the newborn external screw thread, release ring and guide shoe external screw thread at bright and clean section of next coming in order, described anti-lost shaft bottom is threaded with described anti-lost lance watt.
2. one overlaps milling fishing integrated workover tool according to claim 1, it is characterized in that, described top connection upper end is provided with and sends into the box thread of drilling tool coupling.
3. a kind of cover milling fishing integrated workover tool according to claim 1, is characterized in that, the described pair of female joint lower end inside is provided with one expanding bright and clean section, and bright and clean section of upper end offers twin-stage box.
4. one overlaps milling fishing integrated workover tool according to claim 1, it is characterized in that, described transit joint upper end is provided with the twin-stage pin thread be connected with two female joint lower end, and transit joint lower end is provided with twin-stage box.
5. one overlaps milling fishing integrated workover tool according to claim 1, and it is characterized in that, between described two lug pin outer ends, length is less than casing section mill internal diameter 2 millimeters.
6. one overlaps milling fishing integrated workover tool according to claim 1, it is characterized in that, described anti-lost shaft adopts hollow structure, upper end is drilled with lug pin hole, middle part raised step is milled with cotter slot, raised step bottom is provided with undergauge step A successively, has externally threaded bright and clean section of gingival cyst of mucous gland in the newborn, bright and clean section of undergauge, be provided with external screw thread undergauge section again.
7. one overlaps milling fishing integrated workover tool according to claim 1, it is characterized in that, described milling shoe adopts hollow design, and described milling shoe upper end circumference is milled with " J " type groove, described " J " type flute length slot part is opening groove, and short slot part is closed slots; Be provided with the twin-stage male thread matched with the box thread of transit joint in the middle part of described milling shoe, be provided with bright and clean section in twin-stage male thread lower end, be evenly provided with pin hole bright and clean section of circumference, described milling shoe bottom paving weldering carbide alloy.
8. one overlaps milling fishing integrated workover tool according to claim 1, and it is characterized in that, described anti-lost lance watt is provided with gingival cyst of mucous gland in the newborn internal thread, and a described anti-lost lance watt outside is provided with sawtooth and salvages screw thread.
9. one overlaps milling fishing integrated workover tool according to claim 1, and it is characterized in that, described guide shoe top is provided with internal thread, and lower end outside is inclined-plane undergauge, and guide shoe inside adopts hollow design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551386.0U CN204098838U (en) | 2014-09-24 | 2014-09-24 | A kind of cover milling fishing integrated workover tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551386.0U CN204098838U (en) | 2014-09-24 | 2014-09-24 | A kind of cover milling fishing integrated workover tool |
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| Publication Number | Publication Date |
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| CN204098838U true CN204098838U (en) | 2015-01-14 |
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| CN201420551386.0U Active CN204098838U (en) | 2014-09-24 | 2014-09-24 | A kind of cover milling fishing integrated workover tool |
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Cited By (2)
| 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 |
| CN108194044A (en) * | 2018-02-23 | 2018-06-22 | 中国石油天然气股份有限公司 | Junk mill |
-
2014
- 2014-09-24 CN CN201420551386.0U patent/CN204098838U/en active Active
Cited By (2)
| 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 |
| CN108194044A (en) * | 2018-02-23 | 2018-06-22 | 中国石油天然气股份有限公司 | Junk mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Jinfu Inventor after: Zhang Fuxiang Inventor after: Li Zhiguo Inventor after: Wang Qunqi Inventor after: Lu Yao Inventor after: Gao Wenxiang Inventor after: Luo Xianwu Inventor after: Wang Xiaoyong Inventor before: Zhu Jinfu |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHU JINFU TO: ZHU JINFU ZHANG FUXIANG LI ZHIGUO WANG QUNQI LU YAO GAO WENXIANG LUO XIANWU WANG XIAOYONG |