CN205823221U - One is novel drags for lance - Google Patents
One is novel drags for lance Download PDFInfo
- Publication number
- CN205823221U CN205823221U CN201620715785.5U CN201620715785U CN205823221U CN 205823221 U CN205823221 U CN 205823221U CN 201620715785 U CN201620715785 U CN 201620715785U CN 205823221 U CN205823221 U CN 205823221U
- Authority
- CN
- China
- Prior art keywords
- fishing head
- mandrel
- lance
- fish
- track
- 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.)
- Expired - Fee Related
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Abstract
This utility model relates to a kind of novel dragging for lance, mainly includes top connection, lock-screw, fishing head, mandrel.Being provided with locking track in the middle part of described mandrel and unlock track, matching with the slideway on described fishing head, described fishing head, lower end divides eight lobes, every lobe to be a card tile, according to its elastic deformation and fish female thread make-up.Transfer during normal work and drag for lance, workover rig manometric suspending weight registration shows that fishing head contacts with fish when diminishing, continue to transfer mandrel, fishing head leading portion divides lobe slips to shrink, and engages with fish further, upper lifting pipe post, mandrel moves relative on fishing head, fishing head and the locking of fish cavity wall, continuation carries, and fishing head drives fish motion to realize salvaging.When load is transfinited, continuing to transfer mandrel, fishing head contraction, slips releases with junk fish wall locking effect, rotates tubing string counterclockwise, makes fishing head be in mandrel and unlocks in track, upper lifting pipe post, and taking-up is dragged for lance and continued to transfer the salvaging of other fishing tools.
Description
Technical field
This utility model relates to a kind of novel dragging for lance and work process thereof.
Background technology
Lobe is divided to drag for the fishing tool that lance is a kind of internal and external threads make-up.When its elastic deformation of dissection type KAWAl enters box cupling
Time in box, upper bailing lance, by the radial tension after male cone (strobilus masculinus) laminating in mandrel and slips, keep the connectivity after make-up
Can, thus engaging fish.Point lobe drags for lance and limits due to the structure of self, and when lifting load and being bigger, it is difficult to exit in time, makes
Becoming tubing string to meet card cannot be movable, in turn results in more complicated secondary down-hole accident.
Summary of the invention
This utility model is for drawbacks described above, it is provided that the novel of a kind of reversible drags for lance and work process thereof.
The technical scheme is that this utility model of this utility model is that one is novel drags for lance, mainly by top connection, lock
Tight screw, fishing head, mandrel composition.Described top connection has tubing thread, can be connected implementation tool with oil pipe and transfer, top connection
Maximum outside diameter has both righting function.Described mandrel with threadeding, and added with lock-screw, thus realizes both fortune with top connection
Dynamic synchronization, has annular space in the middle of mandrel and top connection, fishing head can axially-movable in this space, set in the middle part of mandrel
Having locking track and unlock track, for controlling the mandrel relative position with fishing head, fishing head is along can during mandrel axially-movable
To realize power and energy, mandrel bottom is starting taper structure, and starting taper front end can increase the degrees of expansion of fishing head, lets slip under salvaging
Journey play the guiding role.Described fishing head inwall is provided with track, matches with the slideway on fishing head, can turn by rotating against
Changing fishing head and to locking track or unlock track, fishing head lower end divides eight lobes, every lobe to be a card tile, according to its elastic deformation with
Salvage thing female thread make-up, thus realize salvaging.
The novel work process dragging for lance, comprises the steps:
(1) normal salvage
Scheme one: drag for lance fishing head and be in the locking track of mandrel, transfer and drag for lance, observes the manometric suspending weight of well workover and shows
Number diminishes, it was demonstrated that the card tile of fishing head tentatively engages with fish female thread, continues to transfer mandrel, and fishing head leading portion divides lobe slips
Shrinking, engage with fish further, upper lifting pipe post, fishing head engages motionless with fish, and mandrel moves relative on fishing head, before starting taper
The maximum outside diameter of end makes fishing head expand, fishing head and the locking of fish cavity wall, and continuation carries, and well workover Pressure gauge registration becomes big, beats
Dragging for head drives fish motion to realize salvaging.
Scheme two: drag for lance fishing head and be in the unblock track of mandrel, transfer and drag for lance, observes the manometric suspending weight of well workover and shows
Number diminishes, it was demonstrated that the card tile of fishing head tentatively engages with fish female thread, continues to transfer mandrel, and fishing head leading portion divides lobe slips
Shrinking, engage with fish further, turn clockwise tubing string, and top connection band moving mandrel turns clockwise relative to fishing head, beats
Dragging for a relative motion to lock in track to mandrel, upper lifting pipe post, fishing head engages motionless with fish, and mandrel is relative on fishing head
Moving, the maximum outside diameter of starting taper front end makes fishing head expand, fishing head and the locking of fish cavity wall, continuation carries, well workover pressure representative
Number becomes big, and fishing head drives fish motion to realize salvaging.
(2) exit when cannot salvage and drag for Mao Zuoye
When load is transfinited, lifting load is bigger, it is impossible to when realizing fishing, will carry out exiting dragging for lance operation.Under continuation
Putting mandrel, fishing head engages motionless with fish, in the unblock track of fishing head relative motion to mandrel, rotates tubing string counterclockwise,
Making fishing head be in mandrel and unlock in track, be now positioned at point lobe of fishing head at the minimum outer diameter of mandrel, slips shrinks, card
Watt with junk fish wall locking effect release, upper lifting pipe post, take out drag for lance.
Accompanying drawing explanation
Fig. 1 is a kind of novel structural representation dragging for lance of this utility model.
Fig. 2 is Fig. 1 (A A) sectional view.
Fig. 3 is the structural representation unlocking track that in Fig. 1, fishing head 3 is in mandrel 4.
Fig. 4 is the structural representation of the locking track that fishing head 3 is in mandrel 4 in Fig. 1.
In figure: 1. top connection, 2. lock-screw, 3. fishing head, 4. mandrel, a. unlocks track, and b. locks track.
Detailed description of the invention
This utility model is described further by engagement accompanying drawing below.
As shown in Figure 1 and Figure 2, this utility model is a kind of novel to drag for lance, mainly by top connection 1, lock-screw 2, fishing head
3, mandrel 4 forms.Described top connection 1 has tubing thread, can be connected below implementation tool with oil pipe, the maximum outside diameter of top connection 1
Have both righting function.Described mandrel 4 with threadeding, and added with lock-screw 2, thus realizes both motions with top connection 1
Synchronize.Described fishing head 3 inwall is provided with track, coordinates with the slideway on mandrel 4, has annular sky in the middle of mandrel 4 and top connection 1
Between, fishing head 3 can axially-movable in this space, by rotate against convertible fishing head 3 to locking track or unlock rail
Road, fishing head 3 lower end is in the starting taper front end of mandrel 4, and being divided into eight lobes, every lobe is a card tile, according to its elastic deformation with beat
Drag for thing female thread make-up, thus realize salvaging.It is provided with locking track in the middle part of mandrel 4 and unlocks track, controlling mandrel and fishing head 3
Relative position, mandrel 4 bottom is starting taper structure, and starting taper front end can increase the degrees of expansion of fishing head.
Below, the above-mentioned novel work process of dragging for lance is discussed in detail:
(1) normal salvage
As it is shown on figure 3, scheme one: drag for lance fishing head 3 and be in the locking track of mandrel 4, transfer and drag for lance, observe well workover pressure
The suspending weight registration of power table diminishes, it was demonstrated that the card tile of fishing head tentatively engages with fish female thread, continues to transfer mandrel 4, salvages
3 leading portions divide lobe slips to shrink, and engage with fish further, upper lifting pipe post, and fishing head 3 engages motionless with fish, and mandrel 4 is relative
Moving on fishing head 3, the maximum outside diameter of starting taper front end makes fishing head 3 expand, fishing head 3 and the locking of fish cavity wall, continuation carries, repaiies
Well pressure represents that number becomes big, and fishing head 3 drives fish motion to realize salvaging.
Scheme two: drag for lance fishing head 3 and be in the unblock track of mandrel 4, transfer and drag for lance, observes the manometric suspending weight of well workover
Registration diminishes, it was demonstrated that the card tile of fishing head tentatively engages with fish female thread, continues to transfer mandrel 4, and fishing head 3 leading portion divides lobe
Slips shrinks, and engages with fish further, and turn clockwise tubing string, and top connection 1 band moving mandrel 4 is clockwise relative to fishing head 3
Rotating, fishing head 3 relative motion is locked in track to mandrel 4, upper lifting pipe post, and fishing head 3 engages motionless with fish, mandrel 4 phase
Moving on fishing head 3, the maximum outside diameter of starting taper front end makes fishing head 3 expand, fishing head 3 and the locking of fish cavity wall, and continuation carries,
Well workover Pressure gauge registration becomes big, and fishing head 3 drives fish motion to realize salvaging.
(2) exit when cannot salvage and drag for Mao Zuoye
As shown in Figure 4, when load is transfinited, lifting load is bigger, it is impossible to when realizing fishing, will carry out exiting and drag for lance work
Industry.Continuing to transfer mandrel 4, fishing head 3 engages motionless with fish, in fishing head 3 relative motion to the unblock track of mandrel 4, inverse
Hour hands rotate tubing string, make fishing head 3 be in mandrel 4 and unlock in track, are now positioned at the minimum of mandrel 4 at point lobe of fishing head 3
Outer radius, slips shrinks, and slips releases with junk fish wall locking effect, upper lifting pipe post, takes out and drags for lance.
Claims (3)
1. one kind novel is dragged for lance, it is characterised in that: include top connection (1), lock-screw (2), fishing head (3), mandrel (4)；Institute
State top connection (1) and there is tubing thread, implementation tool can be connected with oil pipe and transfer；Described mandrel (4) is with top connection (1) with screw thread even
Connect, and added with lock-screw (2), thus realize the synchronization of both motions；Described fishing head (3) inwall is provided with track, with mandrel
(4) slideway on coordinates, and to locking track or unlocks track, fishing head (3) lower end by rotating against convertible fishing head (3)
It is in the starting taper front end of mandrel (4).
A kind of novel drag for lance, its feature in: fishing head (3) lower end divides eight lobes, every lobe to be a card
Tile, according to its elastic deformation and salvaging thing female thread make-up, thus realizes salvaging.
A kind of novel drag for lance, its feature in: mandrel (4) middle part is provided with locking track and unlocks rail
Road, can realize the conversion of function when fishing head (3) is along mandrel (4) axially-movable, mandrel (4) bottom is starting taper structure, is dragging for
Lance decentralization process can play guide effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620715785.5U CN205823221U (en) | 2016-07-08 | 2016-07-08 | One is novel drags for lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620715785.5U CN205823221U (en) | 2016-07-08 | 2016-07-08 | One is novel drags for lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823221U true CN205823221U (en) | 2016-12-21 |
Family
ID=57564963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620715785.5U Expired - Fee Related CN205823221U (en) | 2016-07-08 | 2016-07-08 | One is novel drags for lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057739A (en) * | 2018-09-11 | 2018-12-21 | 西南石油大学 | A kind of pilot-operated type underground fishing tool |
-
2016
- 2016-07-08 CN CN201620715785.5U patent/CN205823221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057739A (en) * | 2018-09-11 | 2018-12-21 | 西南石油大学 | A kind of pilot-operated type underground fishing tool |
| CN109057739B (en) * | 2018-09-11 | 2022-06-21 | 西南石油大学 | Hydraulic control type underground fishing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20170708 |