CN205206780U - First hydraulic of short fish drags for lance - Google Patents
First hydraulic of short fish drags for lance Download PDFInfo
- Publication number
- CN205206780U CN205206780U CN201521084003.4U CN201521084003U CN205206780U CN 205206780 U CN205206780 U CN 205206780U CN 201521084003 U CN201521084003 U CN 201521084003U CN 205206780 U CN205206780 U CN 205206780U
- Authority
- CN
- China
- Prior art keywords
- lance
- piston
- top connection
- pull rod
- pull bar
- 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.)
- Active
Links
Abstract
The utility model discloses a first hydraulic of short fish drags for lance, it need lean on gravity just can sting the inadaptability of tight fish when salvaging the junk to have overcome the conventional lance that drags for, it is concrete including the top connection, a protection section of thick bamboo, a spring, the pull rod, a piston, lance tile and lance pole, the thread connection protection section of thick bamboo of top connection lower part, the last port of pull rod inserts in the lower port of top connection, the piston bush is in the outside of pull rod, pass through set screw fixed connection between the two, perpendicular fixed connection spring between top connection and the piston, the lower end screw thread connection lance tile of piston, the lance pole passes the lance tile and inserts in the lower port of pull rod, lance pole and pull rod set up the gasket between the two. Should drag for the lance and promote its inside piston and drive the slider with interlock mechanism and sting tight fish through suppressing, have easy operation, safe practicality, characteristics that the reliability is high.
Description
Technical field
The utility model relates to a kind of workover tool in oilfield engineering technical field, particularly a kind of falling object fishing tool.
Background technology
The lance class fishing tool in the past adopted, can be divided into sliding block trip spear by design feature, box cupling drags for lance and several large class of releasing spear.Wherein sliding block trip spear and box cupling drag for lance is all utilize slip dog to glide along slideway under Gravitative Loads to contact with fish cavity wall, drill string is carried afterwards, the contact friction of slip insert and fish cavity wall increases, inclined-plane the produced radial component that moves upward forces slip insert to nip fish cavity wall, with above propose the increase of load and the degree of depth of nipping more deeply to sting tight power also larger.And reversible slips fishing spear be instrument in a free state, circle slips external diameter is slightly larger than fish fish chamber internal diameter, when instrument enters fish chamber with guide shoe, circle slips is compressed, and produces certain outer expansion force, slips is made to be adjacent to fish chamber wall, on carry drill string, mandrel with lift power up, the saw-tooth thread on mandrel, slips coincide mutually, slips produces radial direction expanding force, tightly bites junk and realizes grabbing and drag for.When needing to exit instrument, then need certain to mandrel under hit power, circle slips and the inside and outside saw-tooth thread of mandrel are thrown off, and then positive rotation tubing string 2--3 encloses, and slips and mandrel produce relative displacement, carries drill string and can exit instrument now.The shortcoming of this several instrument needs the weight by fish could realize safety after biting fish to salvage.
Summary of the invention
The purpose of this utility model is to provide a kind of short fish head fluid power and drags for lance, this fluid power drags for lance and overcomes routine and drag for lance and need when salvaging junk just can sting the inadaptability of tight fish by gravity, after instrument enters fish chamber, promote its internal piston and interlinked mechanism band movable slider sting tight fish by suppressing, above carry and realize salvaging.
For achieving the above object, the technical solution adopted in the utility model is: a kind of short fish head fluid power drags for lance, comprise top connection, protection cylinder, spring, pull bar, piston, lance watt and shaft, wherein, the external screw thread of top connection bottom connects protection cylinder, the upper port of pull bar is inserted in the lower port of top connection, therebetween sealing ring is set, piston bush is in the outside of pull bar, therebetween be fixedly connected with by dog screw, vertically between top connection with piston be fixedly connected with spring, the lower end of piston is threaded lance watt, shaft is through lance watt and insert in the lower port of pull bar, shaft and pull bar arrange pad therebetween.
The beneficial effects of the utility model: short fish head fluid power drags for lance and overcomes conventional shoe and drag for lance and salvaging the inadaptability of complicated junk, except having that conventional shoe drags for that lance can drag for, except the feature that can fall, also have simple to operate, safe and practical, that reliability is high feature.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model short fish head fluid power drags for lance.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1: a kind of short fish head fluid power drags for lance, comprise top connection 1, protection cylinder 3, spring 4, pull bar 5, piston 7, lance watts 10 and shaft 11, wherein, the external screw thread of top connection 1 bottom connects protection cylinder 3, the upper port of pull bar 5 is inserted in the lower port of top connection 1, sealing ring 2 is set therebetween, piston 7 is enclosed within the outside of pull bar 5, sealing ring 6 and sealing ring 9 are set therebetween and are fixedly connected with by dog screw, vertically between top connection 1 with piston 7 be fixedly connected with spring 4, the lower end of piston 7 is threaded lance watts 10, shaft 11 is through lance watts 10 and insert in the lower port of pull bar 5, shaft 11 and pull bar 5 arrange pad 8 therebetween.
When short fish head fluid power drags for lance cooperation fishing string to junk enforcement salvaging, first, instrument is introduced in fish chamber; Then, in fishing string, suppress 3-5KN on ground, upper lifting pipe post in situation with pressure, salvage junk; Drag for after obtaining junk, pressure release in pipe, trips out tubing string and junk.If need back-off, drag for after obtaining junk, and conventional left hand fishing spear embodiment is just the same.
According to salvaging junk size and implementing the borehole size salvaged, this instrument has different specifications, can with φ 73 drilling rod, φ 127 drilling rod and other drilling tool, the tool matching that can be attached thereto, implement the salvaging to junk.
Claims (1)
1. one kind short fish head fluid power drags for lance; comprise top connection, protection cylinder, spring, pull bar, piston, lance watt and shaft; it is characterized in that: the external screw thread of described top connection bottom connects protection cylinder; the upper port of pull bar is inserted in the lower port of top connection; therebetween sealing ring is set; piston bush is in the outside of pull bar; therebetween be fixedly connected with by dog screw; vertically between top connection with piston be fixedly connected with spring; the lower end of piston is threaded lance watt; shaft is through lance watt and insert in the lower port of pull bar, and shaft and pull bar arrange pad therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521084003.4U CN205206780U (en) | 2015-12-23 | 2015-12-23 | First hydraulic of short fish drags for lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521084003.4U CN205206780U (en) | 2015-12-23 | 2015-12-23 | First hydraulic of short fish drags for lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205206780U true CN205206780U (en) | 2016-05-04 |
Family
ID=55844505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521084003.4U Active CN205206780U (en) | 2015-12-23 | 2015-12-23 | First hydraulic of short fish drags for lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205206780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194046A (en) * | 2017-11-29 | 2018-06-22 | 中国海洋石油集团有限公司 | Can give up fishing device and its Refloatation method |
-
2015
- 2015-12-23 CN CN201521084003.4U patent/CN205206780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194046A (en) * | 2017-11-29 | 2018-06-22 | 中国海洋石油集团有限公司 | Can give up fishing device and its Refloatation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107060679B (en) | Screw rod hydraulic pressure can move back formula fishing tool | |
| CN104213868B (en) | Desirable bore anchor packer | |
| CN205689156U (en) | A kind of high-adaptability stress decentralized bidirectional hydraulic drilling jar | |
| CN204060596U (en) | A kind of down-hole unfreezing hydraulic force increasing device | |
| CN205503076U (en) | Down -hole junk slip socket | |
| CN207829838U (en) | A kind of releasable formula slips fisher | |
| CN104712279B (en) | Coiled tubing hydraulic double-way jar | |
| CN205206780U (en) | First hydraulic of short fish drags for lance | |
| CN104533331A (en) | Method and device for achieving shock through circulating drilling fluid | |
| CN104499979B (en) | It is changed without the method and device that slips salvages different-diameter fish | |
| CN204175233U (en) | Desirablely bore anchor packer | |
| CN202531042U (en) | Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} | |
| CN109779538B (en) | Petroleum downhole operation device | |
| CN201843556U (en) | Hydraulic withdrawable overshot | |
| CN201074492Y (en) | Left hand fishing spear with large obliqueness of oilfield horizontal well and receded horizontal section | |
| CN107654195B (en) | Composite impact rolling self-adjusting PDC drill bit | |
| CN202108452U (en) | Lifting salvage cylinder for horizontal well | |
| CN213775296U (en) | Steel wire cutting knife capable of positioning | |
| CN202745781U (en) | Downhole throttle salvaging tool for natural gas extraction | |
| CN201321827Y (en) | Anti-sticking hydraulic anchor capable of continuous operation | |
| CN204663449U (en) | A kind of coiled tubing fishing socket of hydraulic pressure release | |
| CN202706985U (en) | Hydraulic machinery integrated bridge plug | |
| CN206338046U (en) | A kind of drilling rod stalk pulling device | |
| CN211201839U (en) | Hydraulic control type underground fishing device | |
| CN202170760U (en) | Downhole hydraulic safety connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |