CN204252890U - A kind of solution sealing mechanism of major diameter slip-type restriction choke - Google Patents
A kind of solution sealing mechanism of major diameter slip-type restriction choke Download PDFInfo
- Publication number
- CN204252890U CN204252890U CN201420670834.9U CN201420670834U CN204252890U CN 204252890 U CN204252890 U CN 204252890U CN 201420670834 U CN201420670834 U CN 201420670834U CN 204252890 U CN204252890 U CN 204252890U
- Authority
- CN
- China
- Prior art keywords
- restriction choke
- slips
- slip
- major diameter
- cone seat
- 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
Landscapes
- Package Frames And Binding Bands (AREA)
Abstract
The utility model provides a kind of solution sealing mechanism of major diameter slip-type restriction choke, comprise restriction choke body, slips ring, banding pin, slips hoop, slips, lock dog, deblocking pin, cone seat and baffle ring, slips ring set is connected on the outer wall of restriction choke body upper end, and it is radially evenly provided with three grooves, three slip grooves are radially evenly distributed with in the middle part of restriction choke body, slips is fixed in the slip groove of restriction choke body by slips hoop, the upper end of slips is fixed in the groove of slips ring, slips hoop is fixed by banding pin and restriction choke body, cone seat is fixed on by deblocking pin on the outer wall of restriction choke body, cone seat is radially evenly distributed with three draw-in grooves, lock dog has three, be placed in three draw-in grooves of cone seat respectively, and be close to the lower end inner surface of slips, restriction choke body lower end is connected with baffle ring.This utility model solves when major diameter slip-type restriction choke is salvaged and glides, and is difficult to resolve the problem of envelope, improves fishing success ratio.
Description
Technical field
The utility model belongs to a kind of industrial gas oil underground operation tool, is the solution sealing mechanism of a kind of major diameter slip-type restriction choke in gas field development instrument.
Background technology
In order to well well yield of improving the standard further, Soviet Union's Sulige gas field has carried out " volume fracturing " extend trial, for increasing discharge capacity, adopts 4
1/
2" oil pipe is as pressure break gas production integrated pipe column.This type of well adopts well head heating, the throttling mode of production at present, and cost of production is high, management difficulty is large, security risk is large.In view of the ripe application experience of Soviet Union's Sulige gas field downhole choke technology, carry out 4
1/
2" the design research and development of tubing string downhole choke device, carry out downhole choke step-down in early stage and produce, to improve " volume fracturing " overall efficiency.
What revive Sulige gas field wide popularization and application is slip-type underground throttle, this restriction choke be rely on the sealing of slips locking, packing element, valve joins a kind of downhole tool producing and realize pit shaft natural gas reducing pressure by regulating flow, and complete restriction choke by piano wire and throw in, set and the underground work such as salvaging.
And apply at present 2
7/
8" and 2
3/
8" tubing slip formula underground throttle device locking mechanism is the 3 slips compositions adopting profile of tooth, material, processing technology identical, relies on pressure reduction to make slips and tube inner wall produce active force to reach fixing.But along with the increase of tubing string caliber, slip-type underground throttle sealing area increases, it sets the pressure reduction that consequence is subject to and also increases, and by downward jarring, such restriction choke makes that relative displacement occurs between slips and cone and carrys out deblocking restriction choke simultaneously, thus carries out the smooth salvaging of restriction choke; But along with the increase of restriction choke setting force, its deblocking power also increases thereupon, cause salvaging difficulty, even down-hole accident can occur.Therefore, in order to ensure 4
1/
2" the easy deblocking of tubing string downhole choke device need research and develop a kind of solution sealing mechanism being different from down the major diameter slip-type restriction choke hitting deblocking, again with the Production requirement of satisfied Soviet Union Sulige gas field " volume fracturing " gas well.
Utility model content
The purpose of this utility model overcomes when in prior art, major diameter slip-type restriction choke is salvaged to glide, and is difficult to resolve envelope, affects the problem of its fishing success ratio.
For this reason, the utility model provides a kind of solution sealing mechanism of major diameter slip-type restriction choke, comprise restriction choke body, also comprise slips ring, banding pin, slips hoop, slips, lock dog, deblocking pin, cone seat and baffle ring, described slips ring set is connected on the outer wall of restriction choke body upper end, and it is radially evenly provided with three grooves, three slip grooves are radially evenly distributed with in the middle part of described restriction choke body, described slips is fixed in the slip groove of restriction choke body by slips hoop, the upper end of described slips is provided with projection, be fixed in the groove of slips ring by projection, described slips hoop is fixed by banding pin and restriction choke body, described cone seat is fixed on by deblocking pin on the outer wall of restriction choke body, described cone seat is radially evenly distributed with three draw-in grooves, described lock dog has three, be placed in three draw-in grooves of cone seat respectively, and be close to the lower end inner surface of slips, described restriction choke body lower end is connected with baffle ring.
Above-mentioned restriction choke body is divided into two sections, and epimere external diameter is greater than hypomere external diameter.
Above-mentioned slips is segment shape, and its lower end outer wall is provided with slip insert, and inwall is inclined-plane.
The size of above-mentioned lock dog is in the same size with the draw-in groove of cone seat.
Above-mentioned cone seat is cylindric, and its outer wall upper end is taper seat, and the gradient of taper seat is consistent with the gradient on slips lower end inner wall inclined-plane.
The lower end inner wall of above-mentioned cone seat is provided with step.
The lower end outer wall of above-mentioned cone seat is provided with screw thread.
Screwed connection between above-mentioned baffle ring and restriction choke body.
The beneficial effects of the utility model: the solution sealing mechanism of this major diameter slip-type restriction choke that the utility model provides by under hit unfreezing and change into and hit unfreezing, the three symmetrical lock dogs supporting slip when restriction choke sets made full use of on cone seat is stuck in tube inner wall, and three symmetrical lock dogs retractions carried on salvaging when cutting off deblocking pin on cone seat thus release the locking of slips and tube inner wall, solve the problem that major diameter slip-type restriction choke is difficult to resolve envelope.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of the solution sealing mechanism of the utility model major diameter slip-type restriction choke.
Description of reference numerals: 1, slips ring; 2, banding pin; 3, slips hoop; 4, restriction choke body; 5, slips; 6, lock dog; 7, deblocking pin; 8, seat is bored; 9, baffle ring.
Detailed description of the invention
Embodiment 1:
Glide to overcome when in prior art, major diameter slip-type restriction choke is salvaged, be difficult to resolve envelope, affect the problem of its fishing success ratio, present embodiments provide a kind of solution sealing mechanism of major diameter slip-type restriction choke as shown in Figure 1, comprise restriction choke body 4, also comprise slips ring 1, banding pin 2, slips hoop 3, slips 5, lock dog 6, deblocking pin 7, cone seat 8 and baffle ring 9, described slips ring 1 is socketed on the outer wall of restriction choke body 4 upper end, and it is radially evenly provided with three grooves, three slip grooves are radially evenly distributed with in the middle part of described restriction choke body 4, described slips 5 is fixed on by slips hoop 3 in the slip groove of restriction choke body 4, the upper end of described slips 5 is provided with projection, be fixed in the groove of slips ring 1 by projection, described slips hoop 3 is fixed by banding pin 2 and restriction choke body 4, described cone seat 8 is fixed on by deblocking pin 7 on the outer wall of restriction choke body 4, described cone seat 8 is radially evenly distributed with three draw-in grooves, described lock dog 6 has three, be placed in three draw-in grooves of cone seat 8 respectively, and be close to the lower end inner surface of slips 5, described restriction choke body 4 lower end is connected with baffle ring 9.
Wherein, described restriction choke body 4 is divided into two sections, and epimere external diameter is greater than hypomere external diameter; Described slips 5 is segment shape, and its lower end outer wall is provided with slip insert, and inwall is inclined-plane; The size of described lock dog 6 is in the same size with the draw-in groove of cone seat 8; Described cone seat 8 is cylindric, and its outer wall upper end is taper seat, and the gradient of taper seat is consistent with the gradient on slips 5 lower end inner wall inclined-plane; The lower end inner wall of described cone seat 8 is provided with step; The lower end outer wall of described cone seat 8 is provided with screw thread, can be used for the miscellaneous part of screwed connection major diameter restriction choke; Screwed connection between described baffle ring 9 and restriction choke body 4.
When Large Diameter Pipeline slip-type restriction choke is salvaged by steel wire operation, restriction choke body 4 upwards jarring caught by fishing tool, when deblocking pin 7 is cut off, restriction choke main body 4 relatively cone seat 8 moves upward, until when baffle ring 9 enters the step place of cone seat 8 lower end inner wall, because restriction choke main body 4 epimere external diameter is greater than hypomere external diameter, restriction choke main body 4 moves upward, external diameter diminishes, now lock dog 6 is in the hypomere of restriction choke main body 4, and simultaneously the slip insert of slips 5 to the active force of lock dog 6, lock dog 6 is made to drop on the small outer diameter section of restriction choke main body 4, because it is locking that the retraction of lock dog 6 releases between slips 5 and tube inner wall, the success of major diameter slip-type restriction choke deblocking, thus prevent restriction choke downslide to fall into shaft bottom, improve its fishing success ratio.
Embodiment 2:
On the basis of embodiment 1, set and deblocking for the major diameter slip-type restriction choke of a bite 4.5in oil pipe gas well, the utility model is described in further detail.
(1) set
The input fishing of major diameter slip-type restriction choke has been come by piano wire operation; During input, the dispenser of major diameter slip-type restriction choke is connected with steel wire tool string, and this instrument is transferred to design attitude by gas production wellhead, steel wire is carried slowly, slips 5 is moved down and stuck in tube inner wall relative to cone seat 8 and all parts of connecting therewith, continuation is carried the pin on steel wire shearing dispenser, and trip out outside pit shaft with steel wire tool string, major diameter slip-type restriction choke sets successfully.
(2) deblocking
Connecting fishing tool with steel wire tool string transfers to major diameter slip-type restriction choke setting position by gas production wellhead, fishing tool catches restriction choke body 4 and upwards jarring, larger to upper pulling force, the power that lock dog 6 acts on slips 5 is also larger, and slips 5 is stuck tighter with oil pipe; When deblocking pin 7 is cut off, restriction choke main body 4 relatively cone seat 8 moves upward, until baffle ring 9 enters the lower end inner wall step place of cone seat 8, the hypomere of the little external diameter of restriction choke main body 4 just with lock dog 6 at same position place, because the slip insert of slips 5 is to the active force of lock dog 6, lock dog 6 just drops on the hypomere of restriction choke main body 4, because the retraction of lock dog 6 releases the locking of slips 5 and tube inner wall, the success of major diameter slip-type restriction choke deblocking, thus prevent its downslide to fall into shaft bottom, improve fishing success ratio.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (8)
1. the solution sealing mechanism of a major diameter slip-type restriction choke, comprise slips ring (1), banding pin (2), slips hoop (3), restriction choke body (4), slips (5), lock dog (6), deblocking pin (7), cone seat (8) and baffle ring (9), it is characterized in that: described slips ring (1) is socketed on the outer wall of restriction choke body (4) upper end, and it is radially evenly provided with three grooves, described restriction choke body (4) middle part is radially evenly distributed with three slip grooves, described slips (5) is fixed in the slip groove of restriction choke body (4) by slips hoop (3), the upper end of described slips (5) is provided with projection, be fixed in the groove of slips ring (1) by projection, described slips hoop (3) is fixed by banding pin (2) and restriction choke body (4), described cone seat (8) is fixed on the outer wall of restriction choke body (4) by deblocking pin (7), described cone seat (8) is radially evenly distributed with three draw-in grooves, described lock dog (6) has three, be placed in three draw-in grooves of cone seat (8) respectively, and be close to the lower end inner surface of slips (5), described restriction choke body (4) lower end is connected with baffle ring (9).
2. the solution sealing mechanism of major diameter slip-type restriction choke as claimed in claim 1, is characterized in that: described restriction choke body (4) is divided into two sections, and epimere external diameter is greater than hypomere external diameter.
3. the solution sealing mechanism of major diameter slip-type restriction choke as claimed in claim 1, it is characterized in that: described slips (5) is segment shape, and its lower end outer wall is provided with slip insert, inwall is inclined-plane.
4. the solution sealing mechanism of major diameter slip-type restriction choke as claimed in claim 1, is characterized in that: the size of described lock dog (6) is in the same size with the draw-in groove of cone seat (8).
5. the solution sealing mechanism of the major diameter slip-type restriction choke as described in claim 1 or 3, it is characterized in that: described cone seat (8) is for cylindric, its outer wall upper end is taper seat, and the gradient of taper seat is consistent with the gradient on slips (5) lower end inner wall inclined-plane.
6. the solution sealing mechanism of major diameter slip-type restriction choke as claimed in claim 1, is characterized in that: the lower end inner wall of described cone seat (8) is provided with step.
7. the solution sealing mechanism of major diameter slip-type restriction choke as claimed in claim 1, is characterized in that: the lower end outer wall of described cone seat (8) is provided with screw thread.
8. the solution sealing mechanism of major diameter slip-type restriction choke as claimed in claim 1, is characterized in that: screwed connection between described baffle ring (9) and restriction choke body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670834.9U CN204252890U (en) | 2014-11-12 | 2014-11-12 | A kind of solution sealing mechanism of major diameter slip-type restriction choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670834.9U CN204252890U (en) | 2014-11-12 | 2014-11-12 | A kind of solution sealing mechanism of major diameter slip-type restriction choke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252890U true CN204252890U (en) | 2015-04-08 |
Family
ID=52957210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670834.9U Active CN204252890U (en) | 2014-11-12 | 2014-11-12 | A kind of solution sealing mechanism of major diameter slip-type restriction choke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204252890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373070A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Deblocking mechanism of large-diameter slip type throttler |
-
2014
- 2014-11-12 CN CN201420670834.9U patent/CN204252890U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373070A (en) * | 2014-11-12 | 2015-02-25 | 中国石油天然气股份有限公司 | Deblocking mechanism of large-diameter slip type throttler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204312036U (en) | A kind of differential pressure underground throttle device valve | |
| CN205503076U (en) | Down -hole junk slip socket | |
| CN107060702B (en) | A kind of coupling type underground throttle device | |
| CN203948062U (en) | Reversible punching slip socket | |
| CN105840154B (en) | A kind of novel clamp tile style underground throttle device | |
| CN204002734U (en) | A kind of pneumatic setting restriction choke | |
| CN204252890U (en) | A kind of solution sealing mechanism of major diameter slip-type restriction choke | |
| CN203452734U (en) | Integrated production and wax removing and prevention pipe column for high-pressure gas well | |
| CN104373070A (en) | Deblocking mechanism of large-diameter slip type throttler | |
| CN204371261U (en) | A kind of locking mechanism of major diameter restriction choke | |
| CN204175226U (en) | Slips drags for lance | |
| CN201103360Y (en) | Underground falling objects salvaging barrel | |
| CN202900204U (en) | Downhole throttle device for coiled tubing | |
| CN202531150U (en) | Fishable fracturing sliding sleeve sand spraying device | |
| CN202360058U (en) | Fishable oil pipe plug | |
| CN105370237A (en) | Stopper | |
| CN204492759U (en) | Multifunctional rotary sleeve pipe leads to curette | |
| CN107542422A (en) | The milling method and combined type junk mill and application method of different hole diameters | |
| CN104514528B (en) | Reducer packing element lytic agent delivery device | |
| CN203879409U (en) | Drilling rod capable of reducing friction and pressure and removing cuttings bed | |
| CN204163669U (en) | Reducing neck eye junk mill | |
| CN104358550A (en) | Clamping mechanism of large-diameter throttling device | |
| CN206158644U (en) | Pull out disconnected formula jarring unfreezing device | |
| CN202767932U (en) | Tubing coupling sealing fishing device | |
| CN204002669U (en) | Sleeve pipe make-up fisher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |