CN108775229A - A kind of steel wire rope cap head fishing tool - Google Patents
A kind of steel wire rope cap head fishing tool Download PDFInfo
- Publication number
- CN108775229A CN108775229A CN201810736749.0A CN201810736749A CN108775229A CN 108775229 A CN108775229 A CN 108775229A CN 201810736749 A CN201810736749 A CN 201810736749A CN 108775229 A CN108775229 A CN 108775229A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- fishing tool
- outside
- magnet
- wire rope
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 106
- 239000010959 steel Substances 0.000 title claims abstract description 106
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 14
- 241000251468 Actinopterygii Species 0.000 abstract description 13
- 229910052742 iron Inorganic materials 0.000 abstract description 7
- 230000001788 irregular Effects 0.000 abstract description 7
- 230000005415 magnetization Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 9
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229920000965 Duroplast Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
-
- 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
- E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means
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)
Abstract
The invention belongs to Oil & Gas Drilling Technology fields, more particularly to a kind of Novel steel wire rope cap head fishing tool.A kind of be made outside steel wire of steel wire is provided to grab and magnet is coordinated to realize that steel wire grabs magnetized steel wire rope cap head fishing tool outside.It is grabbed outside steel wire because there is magnetism by magnet magnetization, it can be adsorbed in the iron filings or steel wire rope rope socket for encountering underground, and being made outside steel wire to grip in during decentralization jarring of steel wire can open to capture salvage objects because of external force, then salvage objects have been salvaged under the action of steel wire elastic force, it is slipped out of the hand due to the flexible deformation of steel wire to grab realization outside steel wire after more than certain force, then the hook gripped in before restoring again under the action of elastic force outside steel wire after slipping out of the hand grabs shape.The irregular sundries salvaging such as steel wire rope rope socket or rubber fish in oil/gas well is set to be more prone to;It slips out of the hand for the salvage objects being difficult to out and is also more prone to.
Description
Technical field
The invention belongs to Oil & Gas Drilling Technology fields, more particularly to a kind of Novel steel wire rope cap head fishing tool.
Background technology
In water injection well in oil fields test process, logging steel wire is due to the originals such as use for a long time, pulling force excess load, steel wire sand holes
The pit shaft steel wire junk caused by is the production problem of relatively common and very bad processing.Falling in the wellbore is stayed after steel wire fracture
Object, which will influence test equipment tripping in, to be salvaged.Steel wire rope rope socket, iron filings or rubber fish etc. are irregular miscellaneous at present
For object there are no fit closely fishing tool, conventional fishing tool is irregular miscellaneous for steel wire rope rope socket or rubber fish etc.
Object can't be completed to salvage well, seriously affect normal production.
Invention content
The present invention provides a kind of Novel steel wire rope cap head fishing tool, solve steel wire rope rope socket or rubber in oil/gas well
The technical issues of irregular sundries such as glue fish can not be salvaged.
Specific technical solution is that the steel wire rope cap head fishing tool, including fishing tool ontology, helmet, magnet are fixed
Set is grabbed outside steel wire, magnet and trip bolt;Connector is arranged in fishing tool ontology upper end, for the tool string of upper end into
Row connection, common tool string includes weighted lever and bumper jar, and connector is used to connect with the bottom of bumper jar, fishing tool
It is arranged on this body sidewall outside steel wire and grabs jack, for the upper end grabbed outside steel wire to be carried out insertion fixation, this side of fishing tool
Trip bolt through-hole is correspondingly arranged on the outside of wall with helmet side wall, trip bolt passes through trip bolt through-hole by helmet and salvaging work
Has the connection of ontology fixed thread, fishing tool ontology side-wall outer side is correspondingly arranged on trip bolt through-hole with helmet side wall, fastens
Screw is threadedly coupled across helmet with fishing tool ontology, and the lower end of helmet is pressed in the outside that receptacle portion is grabbed outside steel wire, uses
It is fixed after grabbing insertion outside steel wire to being grabbed outside steel wire;Magnet fixed sleeve is connect with fishing tool ontology lower thread, magnetic
Iron is connected to the fixation realized in magnet fixed sleeve to magnet;Magnet lower end diameter is more than upper end diameter and can outside be grabbed with steel wire
Side wall contacts;It is grabbed outside steel wire and grabs jack outside upper end insertion steel wire, lower end is inside hook formation;The fishing tool sheet
It is additionally provided with to accommodate on body sidewall and grabs the groove being caught in outside steel wire, middle section card is grabbed in a groove outside steel wire.
Steel wire rope cap head fishing tool is assembled, then beats steel wire rope cap head by application method first in use
Fishing combined tool connector is connected to the lower end of basic tool string, then will arrive fish position under steel wire rope cap head fishing tool, opens
Then the downward jarring of bumper jar above carries whether exploration catches fish and salvage objects, one end is grabbed outside steel wire be caught in outside steel wire and grab jack
Interior, then centre position is caught in groove, is fixed using helmet, to ensure that grabbing abundant fixation outside steel wire will not occur
The hook of rotation and lower end grabs that the moment is inside, and the magnet contacted therewith will grab magnetization to make it have magnetic work(outside steel wire
Can, iron filings that can be in air-breathing oil/gas well.And grabbed outside steel wire because bending inwards and there is good toughness, under it
It can deform when encountering salvage objects during falling and separate outward, then catch salvage objects, and when fish or salvage objects have been difficult to
When going out, and because grabbing and can centainly be deformed outside steel wire, salvages or replace again to make it be detached from realization from salvage objects
Other fishing tools are salvaged.
At least 2 are grabbed outside steel wire.
The magnet is that cylindrical lower end head diameter is more than upper end diameter.
Fishing tool ontology and magnet fixed sleeve side are correspondingly arranged on elastic cylindrical pin.
Advantageous effect:The irregular sundries salvaging such as steel wire rope rope socket or rubber fish in oil/gas well is set to be more prone to;It is right
The salvage objects gone out in being difficult to, which are slipped out of the hand, to be also more prone to, the drawbacks of can not rising out and can not slip out of the hand after preventing crawl;Structure is more
Simply, cost is lower, is grasped outside steel wire and determines more to fasten and effectively prevent rotational deformation.
Description of the drawings
In order to illustrate more clearly of technical scheme of the present invention, attached drawing needed for embodiment description will be made below simple
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, to those of ordinary skill in the art
For, without creative efforts, other attached drawings are can also be obtained according to these attached drawings, these attached drawings institute is straight
The technical solution connect should also belong to the scope of protection of the present invention.
Fig. 1 is the structural schematic diagram of the present invention.
Reference sign:1, fishing tool ontology;1.1, connector;1.2, groove;1.3, trip bolt through-hole;2, it protects
Cap;3, magnet fixed sleeve;4, it is grabbed outside steel wire;5, magnet;6, trip bolt;7, elastic cylindrical pin;8, jack is grabbed outside steel wire.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below to the specific reality of the present invention
The mode of applying elaborates.Many details are elaborated in the following description in order to fully understand the present invention.But this
Invention can be much to implement different from other manner described here, and those skilled in the art can be without prejudice to the present invention
Similar improvement is done in the case of intension, therefore the present invention is not limited by following public specific implementation mode.
The problem of can not being salvaged for the irregular sundries of steel wire rope rope socket or rubber fish etc. in oil/gas well, the application carries
A kind of be made outside steel wire of steel wire has been supplied to grab and magnet is coordinated to realize that steel wire grabs magnetized steel wire rope cap head fishing tool outside.Steel
Silk is outer to grab because that, thus with magnetism, can be adsorbed in the iron filings or steel wire rope rope socket for encountering underground by magnet magnetization, and
Being made outside steel wire to grip in during decentralization jarring of steel wire can open to capture salvage objects because of external force, then in steel wire elastic force
Under the action of salvaged salvage objects, and when salvage objects can not pull-up when due to steel wire bearing capacity it is limited, after more than certain force by
It is slipped out of the hand in the flexible deformation of steel wire to grab realization outside steel wire, then grips in outside steel wire after slipping out of the hand under the action of elastic force and restore again
Hook before grabs shape.
Embodiment 1, as shown in Figure 1, the steel wire rope cap head fishing tool, including fishing tool ontology 1, helmet 2, magnet
4, magnet 5 and trip bolt 6 are grabbed outside fixing sleeve 3, steel wire;1 upper end of fishing tool ontology be arranged connector 1.1, for
The tool string at end is attached, and common tool string includes weighted lever and bumper jar, and connector 1.1 is for the bottom with bumper jar
Portion connects, and connector 1.1 can be steel wire connector either threaded connector or pin connector etc..Fishing tool ontology 1
It is arranged on side wall outside steel wire and grabs jack 8, for the upper end for grabbing 4 outside steel wire to be carried out insertion fixation, 1 side wall of fishing tool ontology
Outside is additionally provided with helmet 2, and 1 side-wall outer side of fishing tool ontology is correspondingly arranged on trip bolt through-hole 1.3 with 2 side wall of helmet,
Helmet 2 is threadedly coupled by trip bolt 6 across trip bolt through-hole 1.3 with fishing tool ontology 1, and the lower end of helmet 2 is pressed in
The outside that 8 part of jack is grabbed outside steel wire, for carrying out being fixed fixation to grabbing 4 outside steel wire after grabbing 4 insertions outside steel wire;Magnet
Fixing sleeve 3 is connect with 1 lower thread of fishing tool ontology, and magnet 5 is connected to the fixation realized in magnet fixed sleeve 3 to magnet 5;
Magnet fixed sleeve 3 is molded for duroplasts, or is formed without magnetic metal casting.5 lower end diameter of magnet
More than upper end diameter, smaller be connected in magnetic fixing sleeve 3 of upper end diameter is fixed, lower end because be relatively large in diameter,
More than the diameter of magnetic fixing sleeve 3 so as to realize and grab the contacts of 4 side walls outside steel wire, to realize will grab outside steel wire 4 into
The absorption grabbed outside steel wire to iron filings or steel wire rope rope socket is realized in row magnetization;It is grabbed outside steel wire and grabs jack 8 outside 4 upper ends insertion steel wire
In, lower end is inside hook formation, and 4 are grabbed outside steel wire to be carried out as needed for 2,4 or 8 or 6 etc.
Selection setting;Grabbing 4 outside steel wire can select the steel wire of a diameter of 20-28mm to be made as needed.In the small feelings of salvage objects weight
Fine wire can be selected under condition, and vice versa.It is additionally provided with to accommodate on 1 side wall of fishing tool ontology and grabs 4 outside steel wire and be caught in
Groove 1.2, grab 4 middle sections outside steel wire and be stuck in groove 1.2.To make steel wire rope rope socket or rubber fish in oil/gas well
It is more prone to etc. the salvaging of irregular sundries;It slips out of the hand for the salvage objects being difficult to out and is also more prone to, can not be risen after preventing crawl
The drawbacks of going out and can not slipping out of the hand;Structure is simpler, and cost is lower, is grasped outside steel wire and determines more to fasten and rotation is effectively prevent to become
Shape.
Steel wire rope cap head fishing tool is assembled, then beats steel wire rope cap head by operation principle first in use
The connector of fishing combined tool is connected to the lower end of basic tool string, then will arrive fish position under steel wire rope cap head fishing tool, opens
It opens the downward jarring of bumper jar and then above carries whether exploration catches fish and salvage objects, one end is grabbed outside steel wire be caught in outside steel wire and grab jack
Interior, then centre position is caught in groove, is fixed using helmet, to ensure that grabbing abundant fixation outside steel wire will not occur
The hook of rotation and lower end grabs that the moment is inside, and the magnet contacted therewith will grab magnetization to make it have magnetic work(outside steel wire
Can, iron filings that can be in magnetic gas and oil gas well.And grabbed outside steel wire because bending inwards and there is good toughness, at it
It can deform when encountering salvage objects in dropping process and separate outward, then catch salvage objects, and when fish or salvage objects are difficult to
When rising, and because grabbing and can centainly be deformed outside steel wire, to make it be detached from realization salvaging or more again from salvage objects
Other fishing tools are changed to be salvaged.
Embodiment 2, based on the above technical solution, the magnet 5 are that cylindrical lower end head diameter is more than upper end
Diameter.The upper end of cylinder-shaped magnet 5 is connected in magnet fixed sleeve 3, can be arranged by the upper end in cylinder-shaped magnet 5
It is fixedly connected at the shape of threads to match with magnet fixed sleeve 3, it also can be by being molded on the outside of 5 upper end of cylinder-shaped magnet
Fixation of the magnet fixed sleeve 3 both to realize, it is preferred that correspond to and set in fishing tool ontology 1 and 3 side of magnet fixed sleeve
Elastic cylindrical pin 7 is set to be fixed, 3 side of 1 side wall of fishing tool ontology and magnet fixed sleeve is passed through by elastic cylindrical pin 7
Wall realizes the fixation of cylinder-shaped magnet 5 and magnet fixed sleeve 3 to push against the side wall of cylinder-shaped magnet 5.
Claims (4)
1. a kind of steel wire rope cap head fishing tool, it is characterised in that:Including fishing tool ontology, helmet, magnet fixed sleeve, steel wire
It grabs outside, magnet and trip bolt;Connector is arranged in fishing tool ontology upper end, is arranged outside steel wire on this body sidewall of fishing tool
Jack is grabbed, fishing tool ontology side-wall outer side is additionally provided with helmet, and fishing tool ontology side-wall outer side is corresponding with helmet side wall to be set
It is equipped with trip bolt through-hole, trip bolt is threadedly coupled across helmet with fishing tool ontology;The lower end of helmet is pressed in steel wire
The outer outside for grabbing receptacle portion;Magnet fixed sleeve is connect with fishing tool ontology lower thread, and magnet is connected to magnet fixed sleeve
It is interior;Magnet lower end diameter, which is more than upper end diameter, to be contacted with side wall is grabbed outside steel wire;Upper end is grabbed outside steel wire to be inserted into outside steel wire
Jack is grabbed, lower end is inside hook formation;It is additionally provided with to accommodate to grab outside steel wire on described this body sidewall of fishing tool and be caught in
Groove.
2. steel wire rope cap head fishing tool according to claim 1, it is characterised in that:At least 2 are grabbed outside steel wire.
3. steel wire rope cap head fishing tool according to claim 2, it is characterised in that:Magnet is cylindrical lower end head diameter
More than upper end diameter.
4. steel wire rope cap head fishing tool according to claim 3, it is characterised in that:Fishing tool ontology and magnet are solid
Surely set side is correspondingly arranged on elastic cylindrical pin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810736749.0A CN108775229A (en) | 2018-07-06 | 2018-07-06 | A kind of steel wire rope cap head fishing tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810736749.0A CN108775229A (en) | 2018-07-06 | 2018-07-06 | A kind of steel wire rope cap head fishing tool |
Publications (1)
Publication Number | Publication Date |
---|---|
CN108775229A true CN108775229A (en) | 2018-11-09 |
Family
ID=64029708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810736749.0A Pending CN108775229A (en) | 2018-07-06 | 2018-07-06 | A kind of steel wire rope cap head fishing tool |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108775229A (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB753458A (en) * | 1952-12-19 | 1956-07-25 | David John Frederick Burns | Improvements in magnetic fishing tools for bore holes |
CN2549168Y (en) * | 2002-04-03 | 2003-05-07 | 中国石油化工股份有限公司***分公司采油六厂 | Downhole fishing claw |
US20070102161A1 (en) * | 2005-09-09 | 2007-05-10 | Gazewood Michael J | Magnetic fishing tool and method |
CN202152657U (en) * | 2011-08-10 | 2012-02-29 | 中国石油集团川庆钻探工程有限公司 | Jaw type well testing rope cap head fishing barrel |
CN202381013U (en) * | 2011-11-01 | 2012-08-15 | 中国石油天然气集团公司 | Composite small junk fishing socket |
CN204200142U (en) * | 2014-09-15 | 2015-03-11 | 中法渤海地质服务有限公司 | One is tackled all problems at once fishing tool |
CN204327024U (en) * | 2014-10-24 | 2015-05-13 | 中国石油化工股份有限公司 | Diameter adjustable spiral wire fish fisher |
CN104612618A (en) * | 2015-01-26 | 2015-05-13 | 成都科盛石油科技有限公司 | Oil well fisher |
CN205858236U (en) * | 2016-06-30 | 2017-01-04 | 中国石油天然气股份有限公司 | Rotary steel wire junk fishing tool |
CN107448161A (en) * | 2017-08-23 | 2017-12-08 | 中国石油天然气股份有限公司 | Strong magnetic salvager and strong magnetic block arrangement method thereof |
CN207177791U (en) * | 2017-08-23 | 2018-04-03 | 中国石油天然气股份有限公司 | Casing transformer well fishing device |
CN207436981U (en) * | 2017-09-26 | 2018-06-01 | 中国石油天然气股份有限公司 | Fishing device |
CN208633799U (en) * | 2018-07-06 | 2019-03-22 | 西安荣达石油工程有限公司 | A kind of wirerope cap head fishing tool |
-
2018
- 2018-07-06 CN CN201810736749.0A patent/CN108775229A/en active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB753458A (en) * | 1952-12-19 | 1956-07-25 | David John Frederick Burns | Improvements in magnetic fishing tools for bore holes |
CN2549168Y (en) * | 2002-04-03 | 2003-05-07 | 中国石油化工股份有限公司***分公司采油六厂 | Downhole fishing claw |
US20070102161A1 (en) * | 2005-09-09 | 2007-05-10 | Gazewood Michael J | Magnetic fishing tool and method |
CN202152657U (en) * | 2011-08-10 | 2012-02-29 | 中国石油集团川庆钻探工程有限公司 | Jaw type well testing rope cap head fishing barrel |
CN202381013U (en) * | 2011-11-01 | 2012-08-15 | 中国石油天然气集团公司 | Composite small junk fishing socket |
CN204200142U (en) * | 2014-09-15 | 2015-03-11 | 中法渤海地质服务有限公司 | One is tackled all problems at once fishing tool |
CN204327024U (en) * | 2014-10-24 | 2015-05-13 | 中国石油化工股份有限公司 | Diameter adjustable spiral wire fish fisher |
CN104612618A (en) * | 2015-01-26 | 2015-05-13 | 成都科盛石油科技有限公司 | Oil well fisher |
CN205858236U (en) * | 2016-06-30 | 2017-01-04 | 中国石油天然气股份有限公司 | Rotary steel wire junk fishing tool |
CN107448161A (en) * | 2017-08-23 | 2017-12-08 | 中国石油天然气股份有限公司 | Strong magnetic salvager and strong magnetic block arrangement method thereof |
CN207177791U (en) * | 2017-08-23 | 2018-04-03 | 中国石油天然气股份有限公司 | Casing transformer well fishing device |
CN207436981U (en) * | 2017-09-26 | 2018-06-01 | 中国石油天然气股份有限公司 | Fishing device |
CN208633799U (en) * | 2018-07-06 | 2019-03-22 | 西安荣达石油工程有限公司 | A kind of wirerope cap head fishing tool |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2305261A (en) | Method of removing pipe from wells | |
CN208633799U (en) | A kind of wirerope cap head fishing tool | |
CN201448079U (en) | Fishing device for rope drilling tool | |
CN108775229A (en) | A kind of steel wire rope cap head fishing tool | |
CN205225091U (en) | Anti-drop joint | |
CN207538808U (en) | A kind of universality obtains the device of all kinds of junks in oil well shaft bottom | |
CN207144882U (en) | A kind of connecting rod retracting device for cord coring drill | |
CN202325342U (en) | Side hook type steel wire and rope cap fisher | |
CN203822231U (en) | Novel drilling falling-object salvaging device | |
CN202611646U (en) | Down-hole fishing tool for fishing small dropped objects at hole bottom | |
CN201068760Y (en) | Oilfield down-hole salvager | |
CN201428408Y (en) | General overshot for oil well workover operation | |
CN111636841B (en) | Through type rope coring drilling tool inner assembly salvaging mechanism | |
CN210685901U (en) | Well bottom fishing equipment for workover | |
CN212774204U (en) | Assembly fishing mechanism in through type rope core drill | |
CN201057007Y (en) | Reversible loose-leaf type fishing barrel | |
CN104514519B (en) | Oil well pipe string breaking and falling object preventing device | |
CN207436981U (en) | Fishing device | |
CN201517385U (en) | Multifunctional fishing tool for oil and gas field | |
CN103422827A (en) | Jarring-type bridge plug jar knocker | |
CN202596635U (en) | Drive-down bridge plug fishing tool | |
CN211008551U (en) | A test end cap for preventing logging instrument falls into well | |
US6615919B2 (en) | Well pipe extraction apparatus | |
CN209277836U (en) | A kind of novel percussion drill machine tup recovery hook | |
CN2383966Y (en) | Mechanical up-hammer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181109 |
|
RJ01 | Rejection of invention patent application after publication |