CN104389543A - Milling and fishing integrated well repairing tool - Google Patents
Milling and fishing integrated well repairing tool Download PDFInfo
- Publication number
- CN104389543A CN104389543A CN201410492617.XA CN201410492617A CN104389543A CN 104389543 A CN104389543 A CN 104389543A CN 201410492617 A CN201410492617 A CN 201410492617A CN 104389543 A CN104389543 A CN 104389543A
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- CN
- China
- Prior art keywords
- milling
- shoe
- joint
- lost
- twin
- 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.)
- Pending
Links
- 238000003801 milling Methods 0.000 title claims abstract description 62
- 238000003466 welding Methods 0.000 claims abstract description 4
- 206010055018 Gingival cyst Diseases 0.000 claims description 11
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract 2
- 241000251468 Actinopterygii Species 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a milling and fishing integrated well repairing tool. The tool comprises an upper joint, a double-female joint, a transitional joint, convex lug pins, an anti-dropping spear rod, a shearing pin, a mill shoe, an anti-dropping spear tile, a release ring and a guide shoe, wherein the upper joint is in threaded connection with the double-female joint; a double-stage male buckle is arranged at the lower end of the upper joint; a double-stage female buckle matched with the upper joint is arranged at the upper end of the double-female joint; the double-female joint is in threaded connection with the transitional joint; the transitional joint is in threaded connection with the middle of the mill shoe; the anti-dropping spear rod connected with the mill shoe through the shearing pin is inserted in the mill shoe; two convex lug pins fixed through spot welding are mounted at the upper end of the anti-dropping spear rod; a horse tooth external thread, the release ring and a guide shoe external thread are arranged below a smooth section of the anti-dropping spear rod in sequence; and the lower part of the anti-dropping spear rod is in threaded connection with the anti-dropping spear tile. The tool has the characteristics of reasonable structure and finish of fishing and milling construction through one pipe column.
Description
Technical field
The invention belongs to workover tool, be 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.
Summary of the invention
The present invention 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 invention 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 present invention has following beneficial effect:
The present invention 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 present invention overlap milling fishing integrated workover tool enter well view;
Fig. 2 is that the casing section mill that the present invention overlaps milling fishing integrated workover tool frees view to fishing spear;
Fig. 3 is that view is freed in the midway that the present invention overlaps milling fishing integrated workover tool;
Fig. 4 is milling shoe " J " the type groove planar development schematic diagram that the present invention overlaps milling fishing integrated workover tool.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
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 explanation embodiments of the present invention; be not limited to the present invention, for a person skilled in the art, within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
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 |
|---|---|---|---|
| CN201410492617.XA CN104389543A (en) | 2014-09-24 | 2014-09-24 | Milling and fishing integrated well repairing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492617.XA CN104389543A (en) | 2014-09-24 | 2014-09-24 | Milling and fishing integrated well repairing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104389543A true CN104389543A (en) | 2015-03-04 |
Family
ID=52607492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492617.XA Pending CN104389543A (en) | 2014-09-24 | 2014-09-24 | Milling and fishing integrated well repairing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929558A (en) * | 2015-06-23 | 2015-09-23 | 中国石油集团渤海钻探工程有限公司 | Fixed-point sleeve taking and replacement process method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5881816A (en) * | 1997-04-11 | 1999-03-16 | Weatherford/Lamb, Inc. | Packer mill |
| US20030205377A1 (en) * | 2002-05-06 | 2003-11-06 | National Oilwell, L.P. | Packer retriever |
| CN2713125Y (en) * | 2004-07-06 | 2005-07-27 | 新疆石油管理局钻井工艺研究院 | Fishing and milling tool |
| CN2752427Y (en) * | 2004-12-29 | 2006-01-18 | 大庆市萨尔图区登峰石油构件厂 | Small dimention high strength returnable fishing spears |
| CN201318142Y (en) * | 2008-12-17 | 2009-09-30 | 新疆华油油气工程有限公司 | Milling and fishing integrated tool |
| CN203347723U (en) * | 2013-06-22 | 2013-12-18 | 阜宁县石油机械有限公司 | Rotatable and retractable sectioning type slip fishing spear |
| CN203655206U (en) * | 2013-12-31 | 2014-06-18 | 贵州高峰石油机械股份有限公司 | Apparatus of recycling packer for casing-head gas drilling |
| CN204098838U (en) * | 2014-09-24 | 2015-01-14 | 新疆华油油气工程有限公司 | A kind of cover milling fishing integrated workover tool |
-
2014
- 2014-09-24 CN CN201410492617.XA patent/CN104389543A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5881816A (en) * | 1997-04-11 | 1999-03-16 | Weatherford/Lamb, Inc. | Packer mill |
| US20030205377A1 (en) * | 2002-05-06 | 2003-11-06 | National Oilwell, L.P. | Packer retriever |
| CN2713125Y (en) * | 2004-07-06 | 2005-07-27 | 新疆石油管理局钻井工艺研究院 | Fishing and milling tool |
| CN2752427Y (en) * | 2004-12-29 | 2006-01-18 | 大庆市萨尔图区登峰石油构件厂 | Small dimention high strength returnable fishing spears |
| CN201318142Y (en) * | 2008-12-17 | 2009-09-30 | 新疆华油油气工程有限公司 | Milling and fishing integrated tool |
| CN203347723U (en) * | 2013-06-22 | 2013-12-18 | 阜宁县石油机械有限公司 | Rotatable and retractable sectioning type slip fishing spear |
| CN203655206U (en) * | 2013-12-31 | 2014-06-18 | 贵州高峰石油机械股份有限公司 | Apparatus of recycling packer for casing-head gas drilling |
| CN204098838U (en) * | 2014-09-24 | 2015-01-14 | 新疆华油油气工程有限公司 | A kind of cover milling fishing integrated workover tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929558A (en) * | 2015-06-23 | 2015-09-23 | 中国石油集团渤海钻探工程有限公司 | Fixed-point sleeve taking and replacement process method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of 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 |
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| 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 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |