CN209539280U - A kind of high pressure sealing exntension tubs on coiled tubing - Google Patents
A kind of high pressure sealing exntension tubs on coiled tubing Download PDFInfo
- Publication number
- CN209539280U CN209539280U CN201921237632.4U CN201921237632U CN209539280U CN 209539280 U CN209539280 U CN 209539280U CN 201921237632 U CN201921237632 U CN 201921237632U CN 209539280 U CN209539280 U CN 209539280U
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- pin end
- coiled tubing
- female connector
- high pressure
- pressure sealing
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Abstract
The utility model belongs to technical field of petroleum extraction, and in particular to a kind of high pressure sealing exntension tubs on coiled tubing.It solves salvaging Some tools in the prior art to need to carry out set milling, the problem of time-consuming and laborious and fishing device is easy to appear bit freezing during upper mention, the technical solution of the utility model is: including pin end (1) and female connector (5), the shape of the pin end (1) and female connector (5) is cylindrical shape, pin end (1) top is set in the outside of female connector (5) lower part, and O-ring seal (4) are provided between pin end (1) and female connector (5).The utility model salvaging is high-efficient, is not easy bit freezing, is able to satisfy more fishing process demands.The utility model is suitable for the salvaging of the smooth columnar fish such as coiled tubing.
Description
Technical field
The utility model belongs to technical field of petroleum extraction, and in particular to a kind of high pressure sealing on coiled tubing is prolonged
Stretch cylinder.
Background technique
With deepening continuously for oil field development, sand production problem becomes increasingly conspicuous.With the progress of production, when certain partial size
After entering pit shaft with formation fluid with the sand grains of concentration, if yield is lower at this time, sand grains can not be carried out well head, thus by
It is gradually stacked into shaft bottom, downhole tool is caused to fall, influences the normal production of oil well.
In the prior art, the tool or coiled tubing fallen is generally salvaged using fishing socket, this fishing tool
The oil pipe being broken can be fished out.
But some tool strings fallen could be salvaged and above be mentioned after needing slips pressure to unlock in the prior art, such case
Under generally require and carry out set milling, it is time-consuming and laborious.It is blocked and is linked together with slips between fishing socket and the coiled tubing fallen, two
The sealing and circulating channel not extended through between person, suppressing process medium fluid can ring between fishing socket and the coiled tubing fallen
It flows away in the air, so that cycle of higher pressure channel can not be established.Since fishing device establishes preferable flushing not during salvaging
Circulation canal, fishing device are easy to appear bit freezing phenomenon during upper mention.
Utility model content
Need to carry out set milling for Some tools are salvaged in the prior art, time-consuming and laborious, fishing device is during upper mention
The problem of being easy to appear bit freezing, the utility model provide a kind of beating for one pressure seal of offer between recovery tube string and fish
Fishing high pressure sealing exntension tubs.
The technical solution adopted in the utility model is as follows:
A kind of high pressure sealing exntension tubs on coiled tubing, including pin end and female connector, the pin end and mother
The shape of connector is cylindrical shape, and pin end top is set in the outside of female connector lower part, is arranged between pin end and female connector
There is 0 type sealing ring.
After the technical solution, it can make to establish a cycle of higher pressure channel between fishing tool and the tool string fallen,
The slips on the tool fallen can be unlocked, to smoothly propose the tool string fallen, and can be in fishing tool and fish (well
Under junk) between provide a pressure seal, to restore the portion of original fish (such as falling the pressures cycle of coiled tubing)
Divide function, can smoothly salvage, not need to carry out set milling to the tool string fallen, improve salvaging efficiency.Secondly, using this
The coiled tubing fishing device of utility model can establish preferable flush cycle channel during salvaging and prevent from above proposing process
In bit freezing phenomenon.
Preferably, the lower end of the female connector is connected with V-type packing_seal, the V-type packing_seal and pin end it is interior
Wall connection.
After the technical solution, V-type packing_seal stress compensation ability is strong, ensure that pin end and female connector sealing are good
It is good, it ensure that the reliability and safety of this high pressure sealing exntension tubs.
Preferably, the lower end of the V-type packing_seal is connected with lower baffle ring, the inner wall company of the lower baffle ring and pin end
It connects.
After the technical solution, lower baffle ring protects the end of V-type packing_seal, prevents fish (as fallen
Coiled tubing) V-type of damaging packing_seal.
Preferably, the junction of the lower baffle ring and pin end is set as inclined-plane.
After the technical solution, avoids lower baffle ring and form the right angle boss for protruding from pin end inner surface and hinder to fall
Fish passes through, and guarantees that fish passes through lower baffle ring.
Preferably, the pin end and female connector are internally provided with variable diameter, are set as inclined-plane at the variable diameter.
After the technical solution, inclined-plane can be oriented at variable diameter, facilitate fish (coiled tubing such as fallen) smoothly into
Enter high pressure sealing exntension tubs.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1. the utility model can make to establish a cycle of higher pressure channel between fishing tool and the tool string fallen, can unlock
The slips on tool fallen, to smoothly propose the tool string fallen, and can be between fishing tool and coiled tubing
One pressure seal is provided, to restore the partial function of original coiled tubing, can smoothly be salvaged.Secondly, using this reality
It can be established during salvaging during preferable flush cycle channel prevents from above mentioning with novel coiled tubing fishing device
Bit freezing phenomenon.
2. the lower end of female connector is connected with V-type packing_seal, V-type packing_seal stress compensation ability is strong, ensure that public access
Head and female connector good seal, ensure that the reliability and safety of this high pressure sealing exntension tubs.
The lower end of 3.V type packing_seal is connected with lower baffle ring, and lower baffle ring protects the end of V-type packing_seal, prevents
Falling stop fish (coiled tubing such as fallen) V-type of damaging packing_seal.
4. the junction of lower baffle ring and pin end is set as inclined-plane, avoids lower baffle ring formation and protrude from pin end inner surface
Right angle boss and hinder fish to pass through, guarantee that fish passes through lower baffle ring.
5. pin end and female connector are internally provided with variable diameter, inclined-plane is set as at the variable diameter, inclined-plane can be led at variable diameter
To facilitating fish (coiled tubing such as fallen) to can smoothly enter into high pressure sealing exntension tubs.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Fig. 1 is the structural schematic diagram of the utility model.
Wherein, 1- pin end, 2- lower baffle ring, 3-V type packing_seal, 4-0 type sealing ring, 5- female connector.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates below with reference to Fig. 1 to the utility model.
A kind of high pressure sealing exntension tubs on coiled tubing, including pin end 1 and female connector 5,1 He of pin end
The shape of female connector 5 is cylindrical shape, and 1 top of pin end is set in the outside of 5 lower part of female connector, pin end 1 and female connector 5 it
Between be provided with 0 type sealing ring 4.The present embodiment is to salvage coiled tubing citing.In use, pin end 1 is connect with fishing device,
Female connector 5 is connect with the pressure device on ground.When salvaging coiled tubing, since coiled tubing lower end is connected with work by slips
Tool, it has not been convenient to above mention.In the present embodiment, the internal diameter of high pressure sealing exntension tubs is arranged to and the coiled tubing outer diameter phase that is salvaged
Together, it is sealed by coiled tubing and the extruding of high pressure sealing exntension tubs inner wall, forms cycle of higher pressure channel.Pass through high pressure sealing
Exntension tubs pressurize into coiled tubing, can strut slips, and the tool for connecting coiled tubing with its lower end is detached from, and facilitate company
Continuous oil pipe above mentions.And after establishing cycle of higher pressure channel, the partial function (such as pressure circulation system) for falling tool can be restored,
Salvage it smoothly.On the other hand, it is buried due to coiled tubing lower part by sand grains etc., above mentions relatively difficult, coiled tubing and height
After flush cycle channel is established in the connection of means of press seals exntension tubs, by pressurizeing into coiled tubing, the continuous oil that can will be buried
Sand grains around pipe is washed open, convenient for above mentioning for coiled tubing.
The lower end of the female connector 5 is connected with V-type packing_seal 3, and the inner wall of the V-type packing_seal 3 and pin end 1 connects
It connects.3 stress compensation ability of V-type packing_seal is strong, good seal performance, more difficult compared to common rubber seal to be destroyed,
It can guarantee the leakproofness and safety of high pressure sealing exntension tubs.
The lower end of the V-type packing_seal 3 is connected with lower baffle ring 2, and the lower baffle ring 2 is connect with the inner wall of pin end 1.It is female
The inner wall of 5 lower part of connector, lower baffle ring 2 and V-type packing_seal 3 is located on the same round surface, extends fish and high pressure sealing
The contact surface of cylinder is smooth, prevents sealing surface from damaging due to the dragging back and forth of fish.
The junction of the lower baffle ring 2 and pin end 1 is set as inclined-plane, prevents the influence of end effect fish of lower baffle ring 2 from entering
High pressure sealing exntension tubs.
The pin end 1 and female connector 5 are internally provided with variable diameter, are set as inclined-plane at the variable diameter, facilitate fish smooth
Into high pressure sealing exntension tubs.
The specific embodiment of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application protection scope therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection scope of application.
Claims (4)
1. a kind of high pressure sealing exntension tubs on coiled tubing, which is characterized in that including pin end (1) and female connector (5),
The shape of the pin end (1) and female connector (5) is cylindrical shape, and pin end (1) top is set in the outer of female connector (5) lower part
Side is provided with O-ring seal (4) between pin end (1) and female connector (5), and the lower end of the female connector (5) is connected with V-type disk
Root seals (3), and the V-type packing_seal (3) connect with the inner wall of pin end (1).
2. a kind of high pressure sealing exntension tubs on coiled tubing as described in claim 1, which is characterized in that the V-type
The lower end of packing_seal (3) is connected with lower baffle ring (2), and the lower baffle ring (2) connect with the inner wall of pin end (1).
3. a kind of high pressure sealing exntension tubs on coiled tubing as claimed in claim 2, which is characterized in that the lower block
The junction of ring (2) and pin end (1) is set as inclined-plane.
4. a kind of high pressure sealing exntension tubs on coiled tubing as described in claim 1, which is characterized in that the public access
Head (1) and female connector (5) are internally provided with variable diameter, are set as inclined-plane at the variable diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921237632.4U CN209539280U (en) | 2019-08-01 | 2019-08-01 | A kind of high pressure sealing exntension tubs on coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921237632.4U CN209539280U (en) | 2019-08-01 | 2019-08-01 | A kind of high pressure sealing exntension tubs on coiled tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539280U true CN209539280U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921237632.4U Active CN209539280U (en) | 2019-08-01 | 2019-08-01 | A kind of high pressure sealing exntension tubs on coiled tubing |
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| CN (1) | CN209539280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350470A (en) * | 2020-04-02 | 2020-06-30 | 四川安东油气工程技术服务有限公司 | Fishing tool |
-
2019
- 2019-08-01 CN CN201921237632.4U patent/CN209539280U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350470A (en) * | 2020-04-02 | 2020-06-30 | 四川安东油气工程技术服务有限公司 | Fishing tool |
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