CN104632117B - Mechanical throw in catcher - Google Patents
Mechanical throw in catcher Download PDFInfo
- Publication number
- CN104632117B CN104632117B CN201510060306.0A CN201510060306A CN104632117B CN 104632117 B CN104632117 B CN 104632117B CN 201510060306 A CN201510060306 A CN 201510060306A CN 104632117 B CN104632117 B CN 104632117B
- Authority
- CN
- China
- Prior art keywords
- connecting cylinder
- guide groove
- type guide
- limit hook
- claw
- 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.)
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Links
- 210000000078 claw Anatomy 0.000 claims abstract description 32
- 239000004576 sand Substances 0.000 abstract description 7
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 210000003462 vein Anatomy 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
- E21B31/20—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)
Abstract
The invention provides a kind of mechanical throw in catcher, what is be connected including connecting cylinder, with connecting cylinder draws tiltedly and with drawing the fishing head being tiltedly connected, limit hook, control core, claw are sequentially provided with the connecting cylinder, described claw one end is connected with fishing head, the other end be connected with control core, and the control wicking surface is provided with V-type guide groove, and the opening of the V-type guide groove is towards claw direction, limit hook one end is hooked in V-type guide groove, and the other end is hooked in the end face of connecting cylinder；The limit hook is connected one end with V-type guide groove and is arranged with back-moving spring.The present invention to existing fishing spear by being improved, it is allowed in instrument that in particular cases fishing tool still is able to and drawn oblique disengagement by the stuck grade of sand setting, it is to avoid carried on large-tonnage and cause cable to put off, it is ensured that the safety of instrument, the further deterioration of accident is avoided, while greatling save cost.
Description
Technical field
The invention belongs to drilling engineering technical field, and in particular to a kind of mechanical throw in catcher, be bored for drilling well industry underground
Mud-pulse inclinometer is salvaged during well.
Background technology
A large amount of with wireless drilling instrument use, and former wireless drilling inclinometers fishing tool occurs in drilling process
Down-hole accident salvage wireless drilling inclinometers when exist salvage one-way, i.e. fishing tool block draw tiltedly after can not disengage again,
If instrument due in drilling tool sand setting it is stuck, can cause to salvage cable pulling off, cause drilling tool inner cable to fall well, influence next step thing
Therefore processing, cause down-hole accident to complicate, had a strong impact on downhole safety, while increasing cost.
The content of the invention
The purpose of the present invention is because salvaging mud arteries and veins when overcoming the existing fishing tool to occur underground failure in drilling process
The problem of rushing inclinometer failure and increase failure difficulty under processing well and cause possibility that instrument is scrapped.
Therefore, the invention provides a kind of mechanical throw in catcher, including connecting cylinder, drawing tiltedly and with drawing tiltedly of being connected with connecting cylinder
Limit hook, control core, claw are sequentially provided with the fishing head of connection, the connecting cylinder, described claw one end connects with fishing head
Connect, the other end be connected with control core, the control wicking surface is provided with V-type guide groove, and the opening of the V-type guide groove is towards claw side
To limit hook one end is hooked in V-type guide groove, and the other end is hooked in the end face of connecting cylinder；The limit hook and V-type guide groove
Connection one end is arranged with back-moving spring, and the back-moving spring radial direction two ends abut connecting cylinder inwall.
The end face of the limit hook and connecting cylinder connects one end and is arranged with wire loop.
The connecting cylinder other end is provided with connector.
Two V-grooves that the V-type guide groove is connected respectively by two ends are constituted, and two V-groove opening directions are identical.
The claw is connected with control core by locknut.
The connecting cylinder is tiltedly connected through a screw thread with drawing.
The beneficial effects of the invention are as follows：The present invention adds limit hook, control in primary tube in instrument fishing spear equipment
Core and reseting spring device, on the one hand do not change original fishing tool and salvage characteristic, on the other hand used using rod member decentralization is salvaged
Property and above carry the powered MWD fishing spears transferred again, with the MWD instruments of horizontal well, big hole deviation well are carried out it is effective drag for,
Put, it is ensured that instrument fishing spear under stuck state tiltedly can be disengaged smoothly with drawing, it is to avoid accident is complicated.
Brief description of the drawings
Fig. 1 is the structural representation of salvaging state of the present invention；
Fig. 2 is the structural representation of dispensing state of the present invention；
Fig. 3 is the structural representation of V-type guide groove.
In figure：1st, connecting cylinder；2nd, claw；3rd, draw tiltedly；4th, limit hook；5th, back-moving spring；6th, core is controlled；7th, locknut；8、
Fishing head；9th, connector；10th, the first summit；11st, the second summit；12nd, wire loop.
Embodiment
Embodiment 1：
Present embodiments provide a kind of mechanical throw in catcher, including connecting cylinder 1, be connected with connecting cylinder 1 draw oblique 3 and with drawing tiltedly
Limit hook 4, control core 6, claw 2 are sequentially provided with the fishing head 8 of 3 connections, the connecting cylinder 1, described one end of claw 2 is with beating
First 8 connection is dragged for, the other end is connected with control core 6, control core 6 surface is provided with V-type guide groove, the opening of the V-type guide groove
Towards the direction of claw 2, the one end of limit hook 4 is hooked in V-type guide groove, and the other end is hooked in the end face of connecting cylinder 1；The limiting card
Hook 4 is connected one end with V-type guide groove and is arranged with back-moving spring 5, and the back-moving spring radial direction two ends abut connecting cylinder inwall.
The implementation process of the present invention：Claw 2 and control core 6 are connected into the component of composition control core 6 first, by back-moving spring 5
It is set in limit hook 4 and is connected one end with V-type guide groove, in connecting cylinder 1, the one end of limit hook 4 is then hooked in control
The V-type guide groove of core 6, now one end of limit hook 4 and V-type guide groove hook, the other end is hooked in the end-face hole of connecting cylinder 1
It is interior, it will finally draw oblique 3 and be arranged on connecting cylinder 1, back-moving spring 5 is in compressive state.
Specific work process：When being salvaged, one end by limit hook 4 along V-type guide groove slides to apex, now
Control core 6 is moved with claw 2 to oblique 3 direction is drawn, and back-moving spring 5 is gradually resetted, and claw 2, which is sitting in, to be drawn on oblique 3 face, then will be salvaged
First 8 are entered in connecting cylinder 1 by drawing oblique 3, and claw 2 blocks fishing head 8, you can underground equipment is salvaged, and salvages state
When, salvaged weight of equipment acts on the drawing on oblique 3 of throw in catcher.
When occurring instrument or equipment during salvaging by the special circumstances such as sand setting is stuck, limit hook 4 is oriented to along V-type
The summit of groove slides to end, and limit hook 4 pulls the control component of core 6, control core 6 is drawn oblique 3 direction shifting to remote with claw 2
Dynamic, now claw 2 is with drawing oblique 3 emaciated face from fishing head 8 is disengaged with claw 2, and disengaged condition acts on throw in catcher without weight of equipment
On.
Back-moving spring 5 in the present embodiment, damping and restoring force are provided for control core 6 in salvaging and dispensing.
This tool throw in catcher that the present embodiment is provided is allowed in instrument by sand setting card by being improved to existing fishing spear
In particular cases fishing tool of waiting indefinitely still is able to and drawn oblique 3 and disengages, it is to avoid is carried on large-tonnage and causes cable to put off, it is ensured that instrument
Safety, it is to avoid the further deterioration of accident, while the also normal work of without prejudice to instrument and the salvaging in the case of other, machinery knot
Structure changes, and process is simple, with low cost, can further reduce the risk cost of special well.
Embodiment 2：
A kind of mechanical throw in catcher is present embodiments provided, claw 2 and control core 6 are connected into the component of composition control core 6 first,
Back-moving spring 5 is set in limit hook 4 with V-type guide groove and is connected one end, in connecting cylinder 1, then by limit hook 4 one
End hook is controlling the V-type guide groove of core 6, and now one end of limit hook 4 and V-type guide groove is hooked, and the other end is hooked in connecting cylinder 1
End-face hole in, will finally draw oblique 3 be arranged on connecting cylinder 1 on, back-moving spring 5 be in compressive state；Limit hook 4 and connecting cylinder
1 end face connects one end and is arranged with wire loop 12, prevents limit hook 4 from deviating from, while can not be locked by limit hook 4, it is ensured that
Limit hook 4 is freely slidable in V-type guide groove.
Embodiment 3：
A kind of mechanical throw in catcher is present embodiments provided, the component of composition control core 6 is connected by claw 2 and control core 6, will be multiple
Position spring 5 is set in limit hook 4 and is connected one end with V-type guide groove, in connecting cylinder 1, then by the end hook of limit hook 4 one
The V-type guide groove of core 6 is being controlled, now one end of limit hook 4 and V-type guide groove is hooked, and the other end is hooked in the end of connecting cylinder 1
In face, it will finally draw oblique 3 and be arranged on connecting cylinder 1, back-moving spring 5 is in compressive state；The other end of connecting cylinder 1 is provided with connection
First 9, during salvaging, the other end of connector 9 can be connected through a screw thread with salvaging rod member.
The present invention adds limit hook 4, control core 6 and the device of back-moving spring 5 in original fishing spear equipment, on the one hand not
Change original fishing tool and salvage characteristic, on the other hand using salvaging rod member decentralization inertia and above put forward the powered transferred again
MWD fishing spears, to carry out effective dragging for, putting to the MWD instruments of horizontal well, big hole deviation well, it is ensured that instrument is beaten under stuck state
Drag for lance and can smoothly be disengaged with drawing oblique 3, it is to avoid accident is complicated.
Embodiment 4：
The invention provides a kind of mechanical throw in catcher as shown in Figure 1, 2, including connecting cylinder 1, with drawing that connecting cylinder 1 is connected
Oblique 3 and with draw be sequentially provided with oblique 3 fishing heads 8 being connected, the connecting cylinder 1 limit hook 4, control core 6, claw 2, the card
The one end of pawl 2 is connected with fishing head 8, and the other end is connected by locknut 7 with control core 6, and the control surface of core 6 is oriented to provided with V-type
Groove, the opening of the V-type guide groove is towards the direction of claw 2, and the one end of limit hook 4 is hooked in V-type guide groove, and the other end is hooked in connection
The end face of cylinder 1；The limit hook 4 is connected one end with V-type guide groove and is arranged with back-moving spring 5, limit hook 4 and connecting cylinder 1
End face connect one end and be arranged with wire loop 12, the other end of connecting cylinder 1 is provided with connector 9, wherein, connecting cylinder 1 passes through with drawing oblique 3
Threaded connection, correspondence model can be replaced by according to the size of fishing head 8 draws oblique 3, meets different salvaging demands.
Thereafter, two V-grooves that V-type guide groove is connected respectively by two ends are constituted, and two V-groove opening directions are identical,
As shown in Figure 3.
The mechanical throw in catcher specific implementation process that the present embodiment is provided：Claw 2 and control core 6 are connected into composition control first
The component of core 6, is set in limit hook 4 with V-type guide groove by back-moving spring 5 and is connected one end, in connecting cylinder 1, then will limit
Position one end of grab 4 is hooked in the V-type guide groove of control core 6, and now the first summit 10 of limit hook 4 and V-type guide groove is hooked, separately
One end is hooked in the end-face hole of connecting cylinder 1, will finally be drawn oblique 3 and is arranged on connecting cylinder 1, back-moving spring 5 is in compressive state.
Specific work process：As shown in figure 3, when being salvaged, the first summit by limit hook 4 along V-type guide groove
10 slide at the second summit 11, now control core 6 to be moved with claw 2 to oblique 3 direction is drawn, back-moving spring 5 gradually resets, claw 2
It is sitting in and draws on oblique 3 face, then enters fishing head 8 in connecting cylinder 1 by drawing oblique 3, claw 2 blocks fishing head 8, you can to well
Lower equipment is salvaged, when salvaging state, and salvaged weight of equipment acts on the drawing on oblique 3 of throw in catcher.
When occurring instrument or equipment during salvaging by the special circumstances such as sand setting is stuck, limit hook 4 is oriented to along V-type
Second summit 11 of groove is slided at the first summit 10, and limit hook 4 pulls the control component of core 6, makes control core 6 and claw 2 to remote
From oblique 3 direction movement is drawn, now claw 2 is with drawing oblique 3 emaciated face from fishing head 8 is disengaged with claw 2, and disengaged condition is without weight of equipment
Act on throw in catcher.
Back-moving spring 5 in the present embodiment, damping and restoring force are provided for control core 6 in salvaging and dispensing.
2014,10 mouthfuls of accident wells are completed using the mechanical throw in catcher of the present embodiment, because instrument sand card can not be salvaged, success
3 mouthfuls of wells are disengaged, cable loss 5000m are reduced, add up cost-effective nearly 500,000 yuan altogether.
In summary, in instrument, by the stuck grade of sand setting, in particular cases fishing tool still is able to and drawn oblique 3 disengagement to the present invention,
Avoiding large-tonnage from above carrying causes cable to put off, it is ensured that the safety of instrument, it is to avoid the further deterioration of accident, while also without prejudice to instrument
The normal work of device and the salvaging in the case of other；The present invention is not related to electronics and the mechanical structure change of MWD instruments, process letter
It is single, it is with low cost, the risk cost of special well can be further reduced, can widely be promoted in situ of drilling well, be applicable model
Enclose big, by transforming instrument fishing spear in primary tube, it is ensured that the salvaging process safety of MWD instruments, it is to avoid accident
Complicate, can be applied to using special wells such as horizontal well, the directional wells for sitting keyed MWD.
The part that embodiment is not specifically described belongs to the common knowledge and known technology of the art, herein no longer
Describe in detail one by one.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (1)
1. mechanical throw in catcher, including connecting cylinder（1）With connecting cylinder（1）Drawing for connection is oblique（3）With with draw tiltedly（3）The salvaging of connection
Head（8）, it is characterised in that：The connecting cylinder（1）Inside it is sequentially provided with limit hook（4）, control core（6）, claw（2）, the card
Pawl（2）One end and fishing head（8）Connection, the other end and control core（6）Connection, the control core（6）Surface is oriented to provided with V-type
Groove, the opening of the V-type guide groove is towards claw（2）Direction, limit hook（4）One end is hooked in V-type guide groove, and the other end is hooked in
Connecting cylinder（1）End face；The limit hook（4）One end, which is connected, with V-type guide groove is arranged with back-moving spring（5）, the reset bullet
Spring（5）Radial direction two ends abut connecting cylinder（1）Inwall, two V-grooves that the V-type guide groove is connected respectively by two ends are constituted, should
Two V-groove opening directions are identical；
The limit hook（4）With connecting cylinder（1）End face connect one end and be arranged with wire loop（12）, the connecting cylinder（1）Separately
One end is provided with connector（9）, the claw（2）With control core（6）Pass through locknut（7）Connection, the connecting cylinder（1）With drawing tiltedly
（3）It is connected through a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060306.0A CN104632117B (en) | 2015-02-05 | 2015-02-05 | Mechanical throw in catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060306.0A CN104632117B (en) | 2015-02-05 | 2015-02-05 | Mechanical throw in catcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632117A CN104632117A (en) | 2015-05-20 |
| CN104632117B true CN104632117B (en) | 2017-10-03 |
Family
ID=53211296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060306.0A Active CN104632117B (en) | 2015-02-05 | 2015-02-05 | Mechanical throw in catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104632117B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203362092U (en) * | 2013-07-01 | 2013-12-25 | 李士铭 | Retractable fishing cylinder |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101157A (en) * | 1977-07-11 | 1978-07-18 | Richey Vernon T | Tool for fishing an object from a bore hole |
| US4232894A (en) * | 1979-08-02 | 1980-11-11 | Taylor William T | Selectively releasable overshot and pull tool |
| CN2916111Y (en) * | 2006-05-23 | 2007-06-27 | 辽河石油勘探局 | Releasing dragging device |
| CN201013287Y (en) * | 2007-03-01 | 2008-01-30 | 华北石油管理局 | Retrievable fishing barrel for reclaiming bridging plug |
| CN201068761Y (en) * | 2007-08-09 | 2008-06-04 | 丁广营 | Down-hole salvaging tool |
| CN204511354U (en) * | 2015-02-05 | 2015-07-29 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Machinery throw in catcher |
-
2015
- 2015-02-05 CN CN201510060306.0A patent/CN104632117B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203362092U (en) * | 2013-07-01 | 2013-12-25 | 李士铭 | Retractable fishing cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104632117A (en) | 2015-05-20 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: Weiyang road 710018 Shaanxi city of Xi'an province Changqing No. 151 building room 1902 Patentee before: CNPC CHUANQING DRILLING ENGINEERING CO., LTD. CHANGQING WELL DRILLING GENERAL Co. |
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| TR01 | Transfer of patent right |