CN109707344A - A kind of multifunctional oil gas casing down-hole switch - Google Patents
A kind of multifunctional oil gas casing down-hole switch Download PDFInfo
- Publication number
- CN109707344A CN109707344A CN201910195699.4A CN201910195699A CN109707344A CN 109707344 A CN109707344 A CN 109707344A CN 201910195699 A CN201910195699 A CN 201910195699A CN 109707344 A CN109707344 A CN 109707344A
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- sliding sleeve
- inner sliding
- ball seat
- spring
- outer sliding
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A kind of multifunctional oil gas casing down-hole switch, it is related to technical field of oil field equipment, it includes cannula passage, suspension joint, top inner sliding sleeve, top outer sliding sleeve, lower part inner sliding sleeve, lower part outer sliding sleeve and starting taper, suspension joint is connect with top outer sliding sleeve, top outer sliding sleeve is connect with lower part outer sliding sleeve, lower part outer sliding sleeve inner cavity is equipped with lower part inner sliding sleeve, and lower part inner sliding sleeve bottom end is connect by interior be even shorted with starting taper；Cannula passage is equipped in suspension joint, insertion tube is equipped in cannula passage, insertion tube bottom end offsets with sealed steel ball, sealed steel ball is placed on multi-functional ball seat, multi-functional ball seat is slidably connected by keyway and feather key with guide-track groove, and top inner sliding sleeve bottom end is welded by inner sliding sleeve welding groove and lower part inner sliding sleeve.This multifunctional oil gas casing down-hole switch have it is full-featured, applicability is wide, and structure is simple, feature easy to use and safe and reliable.
Description
Technical field:
The present invention relates to technical field of oil field equipment, and in particular to a kind of multifunctional oil gas casing down-hole switch.
Background technique:
In the production operation of oil field, infuses, is frequently necessary to close or open different oily (vapour) in the various technical measures of excavating technology
The fluid channel of layer, such as layering note (gas) vapour, oil production by layer.Oil/gas well needs to open liquid stream usually using bridge plug sealing at present
It pulls bridge plug when channel out or destroys bridge plug；On the other hand, casing or fuel line cock pass through electricity generally as underground blow-out preventing device
Cable or capillary are controlled, and there are certain scope of applications, and higher cost, complicated operation, at the same cannot achieve with
When open the requirement of work production at any time.
Summary of the invention:
In place of overcoming above-mentioned the shortcomings of the prior art, and provide a kind of Multifunctional oil gas well set
Pipe well lower switch, it have it is full-featured, applicability is wide, and structure is simple, feature easy to use and safe and reliable.
The technical solution adopted by the present invention are as follows: a kind of multifunctional oil gas casing down-hole switch, including cannula passage, suspension
Connector, top inner sliding sleeve, top outer sliding sleeve, lower part inner sliding sleeve, lower part outer sliding sleeve and starting taper, suspension joint pass through top outer sliding sleeve
Upper connection screw thread is connect with top outer sliding sleeve, and top outer sliding sleeve is connected by top and the bottom outer sliding sleeve connection screw thread and lower part outer sliding sleeve
It connects, lower part outer sliding sleeve bottom, which is turned up, spring carry boss, and spring carry boss is equipped with outer sliding sleeve spring welding groove, lower part
Outer sliding sleeve inner cavity is equipped with lower part inner sliding sleeve, and sliding sleeve spring is cased with outside the inner sliding sleeve of lower part, and sliding sleeve spring and outer sliding sleeve spring weld slope
Mouth connects, and lower part inner sliding sleeve bottom inner portion passes through connection screw thread under the inner sliding sleeve of lower part and connect with the interior one end that is even shorted, interior to connect short circuit
The other end is connect by starting taper connection screw thread with starting taper, and starting taper top offsets with lower part inner sliding sleeve bottom end, and starting taper top is equipped with bullet
Spring welding groove, spring welding groove are connect by sliding sleeve spring with lower part inner sliding sleeve；It is equipped with cannula passage in suspension joint, inserts
Insertion tube is equipped in tube passage, insertion pipe outer wall is equipped with insertion pipe through-hole, and insertion tube bottom end offsets with sealed steel ball, seals steel
Ball is placed on multi-functional ball seat, and multi-functional ball seat is equipped with ball seat through-hole, and ball seat spring stability column is equipped in multi-functional ball seat, more
Function ball seat bottom is equipped with ball seat and holds foot, and ball seat holds foot and connect by screw thread with top inner sliding sleeve, and top inner sliding sleeve is equipped with ball
Seat spring base, ball seat spring seat are connect by ball seat spring with ball seat spring stability column, and top inner sliding sleeve outer wall is equipped with keyway, key
Feather key is installed, feather key is slidably connected with guide-track groove, and guide-track groove is set on the inner wall of top outer sliding sleeve, top inner sliding sleeve in slot
It is welded by inner sliding sleeve welding groove and lower part inner sliding sleeve bottom end；The top outer sliding sleeve is equipped with outer sliding sleeve through-hole.
Insertion tube sealing ring is equipped between the insertion tube and cannula passage.
Inner sliding sleeve sealing ring B is equipped between the top inner sliding sleeve and top outer sliding sleeve.
Inner sliding sleeve sealing ring A is equipped between the lower part outer sliding sleeve and lower part inner sliding sleeve.
Top inner sliding sleeve, top outer sliding sleeve, lower part inner sliding sleeve, lower part outer sliding sleeve and the insertion tube is all made of nickel chromium triangle conjunction
Golden solution treatment stainless steel austenite material is made.
The sealed steel ball is using the potassium steel material of subzero treatment and the surface processing technique of best bright finish and circularity.
The ball seat through-hole number is equipped with several, and equal distribution is on multi-functional ball seat outer wall.
Insertion tube sealing ring, inner sliding sleeve sealing ring B and the inner sliding sleeve sealing ring A is all made of elastic metallic ring and flexibility
Graphite circle is used in conjunction with each other.
The beneficial effects of the present invention are: this down-hole switch structure is simple, it is full-featured:
1) multi-functional, cooperate different working string and tool string, is adopted suitable for filling the water, gas injection (vapour), recovering the oil, adopting a variety of notes of vapour
The stratified operation of technique；
2) have the effect of bottom hole blowout control valve, no killing well, not open flow, do not use tubing plug in the case where, switch at any time
Payzone carries out maintainability operation to down-hole string and wellhead assembly；
3) pipe fitting uses nichrome solution treatment stainless steel austenite material, has better wear-resisting, corrosion resistance and toughness；
4) sealed steel ball is had high hard using the potassium steel material of subzero treatment and the surface processing technique of best bright finish and circularity
Degree and bigger yield strength；
5) different location sealing ring is cooperated using elastic metallic ring and soft graphite circle, can meet the requirement of high-temperature and high-pressure conditions；
6) double-layer sealing structure, carries pressure stabilizing cavity, and switch motion is simple and reliable.
Detailed description of the invention:
Fig. 1 is schematic diagram of internal structure of the present invention；
Fig. 2 is structure chart when the present invention uses；
Fig. 3 is external structure schematic diagram of the present invention.
Specific embodiment:
Referring to each figure, a kind of multifunctional oil gas casing down-hole switch, including cannula passage 1, suspension joint 20, top inner sliding sleeve
8, top outer sliding sleeve 22, lower part inner sliding sleeve 11, lower part outer sliding sleeve 29 and starting taper 19, suspension joint 20 on the outer sliding sleeve of top by connecting
It connects screw thread 21 to connect with top outer sliding sleeve 22, top outer sliding sleeve 22 passes through top and the bottom outer sliding sleeve connection screw thread 9 and lower part outer sliding sleeve
29 connections, outer sliding sleeve 29 bottom in lower part, which is turned up, spring carry boss 13, and spring carry boss 13 is welded equipped with outer sliding sleeve spring
Groove 12 is connect, outer sliding sleeve 29 inner cavity in lower part is equipped with lower part inner sliding sleeve 11, sliding sleeve spring 14, sliding sleeve bullet are cased with outside lower part inner sliding sleeve 11
Spring 14 is connect with outer sliding sleeve spring welding groove 12, and inner sliding sleeve 11 bottom inner portion in lower part passes through connection screw thread 15 under the inner sliding sleeve of lower part
It is connect with interior 16 one end that are even shorted, interior 16 other ends that are even shorted are connect by starting taper connection screw thread 18 with starting taper 19, and starting taper 19 pushes up
End offsets with 11 bottom end of lower part inner sliding sleeve, and 19 top of starting taper is equipped with spring welding groove 17, and spring welding groove 17 passes through sliding sleeve
Spring 14 is connect with lower part inner sliding sleeve 11；It is equipped with cannula passage 1 in suspension joint 20, is equipped with insertion tube 31 in cannula passage 1, inserts
Enter 31 outer wall of pipe and be equipped with insertion pipe through-hole 32,31 bottom end of insertion tube offsets with sealed steel ball 2, and sealed steel ball 2 is placed in multi-functional
On ball seat 3, multi-functional ball seat 3 is equipped with ball seat through-hole 4, is equipped with ball seat spring stability column 5, multi-function ball in multi-functional ball seat 3
3 bottoms of seat are equipped with ball seat and hold foot 6, and ball seat holds foot 6 and connect by screw thread with top inner sliding sleeve 8, and top inner sliding sleeve 8 is equipped with ball seat
Spring base 26, ball seat spring seat 26 are connect by ball seat spring 7 with ball seat spring stability column 5, and inner sliding sleeve 8 outer wall in top is equipped with key
Slot 25, keyway 25 is interior to install feather key 24, and feather key 24 is slidably connected with guide-track groove 28, and guide-track groove 28 is set to top outer sliding sleeve 22
Inner wall on, inner sliding sleeve 8 bottom end in top is welded by inner sliding sleeve welding groove 27 and lower part inner sliding sleeve 11；It is sliding outside the top
Set 22 is equipped with outer sliding sleeve through-hole 33.Insertion tube sealing ring 30 is equipped between the insertion tube 31 and cannula passage 1.Described
Inner sliding sleeve sealing ring B23 is equipped between top inner sliding sleeve 8 and top outer sliding sleeve 22.It is sliding in the lower part outer sliding sleeve 29 and lower part
Inner sliding sleeve sealing ring A10 is equipped between set 11.The top inner sliding sleeve 8, top outer sliding sleeve 22, lower part inner sliding sleeve 11, lower part
Outer sliding sleeve 29 and insertion tube 31 are all made of nichrome solution treatment stainless steel austenite material and are made.The sealed steel ball 2
Using the potassium steel material of subzero treatment and the surface processing technique of best bright finish and circularity.Described 4 numbers of ball seat through-hole are set
There are several, equal distribution is on multi-functional 3 outer wall of ball seat.The insertion tube sealing ring 30, inner sliding sleeve sealing ring B23 and interior
Sliding sleeve sealing ring A10 is all made of elastic metallic ring and is used in conjunction with each other with soft graphite circle.
Wherein, suspension joint 20 is connect by connection screw thread 21 on the outer sliding sleeve of top with top outer sliding sleeve 22, multi-function ball
The sealed steel ball 2 of seat 3 and best bright finish constitutes the forced seal structure of closing cannula passage 1；Ball seat spring stability column 5, ball seat
Spring 7, ball seat hold foot 6, top inner sliding sleeve 8 and ball seat spring seat 26 and together form the stabilization that multi-functional ball seat 3 moves up and down
Structure, in the initial state, ball seat spring 7 give multi-functional ball seat 3 very big upward elastic force, and it is close to complete multi-functional ball seat 3
Envelope；Multi-functional ball seat 3 has multiple ball seat through-holes 4, and connection ball seat holds the ectonexine of foot 6；Top inner sliding sleeve 8 and lower part inner sliding sleeve
11 are welded by inner sliding sleeve welding groove 27, constitute an entirety；Inner sliding sleeve sealing ring A10 and inner sliding sleeve sealing ring B23 are played
The effect of outer sliding sleeve in sealing；The keyway 22 of top inner sliding sleeve 8 cooperates feather key 24 to realize that guiding is slided up and down in guide-track groove 28
It is dynamic.
Top outer sliding sleeve 22 and lower part outer sliding sleeve 29 pass through top and the bottom outer sliding sleeve connection screw thread 9 and constitute complete outer sliding sleeve knot
Structure；There is guide-track groove 28 in outer sliding sleeve, by completing to slide with the guiding up and down of inner sliding sleeve with feather key 24 and the cooperation of keyway 22；Under
There is a spring carry boss 13 in outer sliding sleeve 29 lower end in portion's, 14 upper end of sliding sleeve spring by way of fixed and welding with lower part outer sliding sleeve
29 form firm connection；The lower end of sliding sleeve spring 14, which is formed with starting taper 19 also by fixed and welding mode, firmly to be connected
It connects；Lower part inner sliding sleeve 11 is connected together with starting taper 19 by interior even short circuit 16, while playing the mobile effect of stabilizing spring；On
There is outer sliding sleeve through-hole 33 on portion's outer sliding sleeve 22, realizes interior outer sliding sleeve connection.
In the initial state, the present invention is in close state, and ball seat sealing seals to form multiple effective sealing with sliding sleeve
Mechanism (under the elastic force effect of ball seat spring 7, is formed effective between multi-functional ball seat 3, sealed steel ball 2 and the opening of cannula passage 1
Hard sealing structure；Meanwhile moving of being formed of inner sliding sleeve sealing ring A10 between interior outer sliding sleeve and inner sliding sleeve sealing ring B23 is close
Envelope).For the stratum that this switch is separated, when the pressure of lower layer is greater than upper stressor layer, even if there is fluid breakthrough sliding sleeve
Between sealing ring enter cavity between multi-functional ball seat 3 and inner sliding sleeve, upwarding pressure for providing can make multi-function ball
3 sealing of seat is tighter；When the pressure of lower layer is less than upper stressor layer, as under the conditions of larger head of liquid, multi-functional ball seat 3 with
Cavity self-assembling formation pressure stabilizing cavity configuration between inner sliding sleeve, the hard sealing formed by the elastic force of ball seat spring 7 and interior outer sliding sleeve
Between sealing ring formed dynamic sealing still realizes effectively seal.
Referring to Fig. 2, the present invention is in the open state, and insertion tube 31 is inserted into cannula passage 1, and the insertion tube on insertion tube 31 is close
Seal ring 30 and the slippery inner surface of cannula passage 1, which are formed, to be sealed, while lower end is contacted with sealed steel ball 2；Sealed steel ball 2 and more function
It can be the rock-steady structure moved up and down between ball seat 3 and inner sliding sleeve, insertion tube 31 relies on itself tubing string gravity compressed ball seat spring
7, move down sealed steel ball 2 with multi-functional ball seat 3；Ball seat is held after foot 6 contacts with top inner sliding sleeve 8, continues to oppress lower part
Inner sliding sleeve 11 moves down, and leads at this point, the keyway 22 of top inner sliding sleeve 8 cooperates feather key 24 to realize in outer sliding sleeve guide-track groove 28
To sliding, sliding sleeve spring 14 is stretched；Feather key 24 is hampered stopping at 28 closing of guide-track groove, is inserted into pipe through-hole 32, outer cunning at this time
Set through-hole 33 and ball seat through-hole 4 form stable fluid channel, by this fluid channel, can be filled the water, gas injection (vapour), be adopted
Oil adopts vapour operation.
It is proposed insertion tube 31, the present invention closes under sliding sleeve spring 14 and the synergy of ball seat spring 7.
In conclusion a kind of this multifunctional oil gas casing down-hole switch, structure is simple, full-featured, multi-functional, cooperation
Different working strings and tool string is suitable for filling the water, gas injection (vapour), the stratified operation for recovering the oil, adopting a variety of injection-production technologies of vapour；Tool
The effect of standby bottom hole blowout control valve, no killing well, not open flow, do not use tubing plug in the case where, switch at any time payzone or
Maintainability operation is carried out to down-hole string and wellhead assembly；Pipe fitting uses nichrome solution treatment stainless steel austenite material,
With better wear-resisting, corrosion resistance and toughness；Sealed steel ball 2 uses the potassium steel material and best bright finish and circularity of subzero treatment
Surface processing technique, have high rigidity and bigger yield strength；Different location sealing ring is using elastic metallic ring and flexible stone
Ink circle cooperation, can meet the requirement of high-temperature and high-pressure conditions；Double-layer sealing structure, carries pressure stabilizing cavity, and switch motion is simple and reliable.
Claims (8)
1. a kind of multifunctional oil gas casing down-hole switch, it is characterised in that: including cannula passage (1), suspension joint (20), on
Portion's inner sliding sleeve (8), top outer sliding sleeve (22), lower part inner sliding sleeve (11), lower part outer sliding sleeve (29) and starting taper (19), suspension joint
(20) it is connect by connection screw thread (21) on the outer sliding sleeve of top with top outer sliding sleeve (22), top outer sliding sleeve (22) passes through top and the bottom
Outer sliding sleeve connection screw thread (9) is connect with lower part outer sliding sleeve (29), and lower part outer sliding sleeve (29) bottom turns up and has spring carry boss
(13), spring carry boss (13) is equipped with outer sliding sleeve spring welding groove (12), and outer sliding sleeve (29) inner cavity in lower part is equipped with lower part
Inner sliding sleeve (11), lower part inner sliding sleeve (11) are cased with sliding sleeve spring (14) outside, sliding sleeve spring (14) and outer sliding sleeve spring welding groove
(12) it connects, inner sliding sleeve (11) bottom inner portion in lower part passes through connection screw thread (15) and interior even short circuit (16) one end under the inner sliding sleeve of lower part
Connection, interior (16) other end that is even shorted are connect by starting taper connection screw thread (18) with starting taper (19), starting taper (19) top and lower part
Inner sliding sleeve (11) bottom end offsets, and starting taper (19) top is equipped with spring welding groove (17), and spring welding groove (17) passes through sliding sleeve
Spring (14) is connect with lower part inner sliding sleeve (11)；It is equipped with cannula passage (1) in suspension joint (20), is equipped in cannula passage (1)
Insertion tube (31), insertion tube (31) outer wall are equipped with insertion pipe through-hole (32), insertion tube (31) bottom end and sealed steel ball (2) phase
It supports, sealed steel ball (2) is placed on multi-functional ball seat (3), and multi-functional ball seat (3) is equipped with ball seat through-hole (4), multi-functional ball seat
(3) ball seat spring stability column (5) are equipped in, multi-functional ball seat (3) bottom is equipped with ball seat and holds foot (6), and ball seat holds foot (6) and passes through spiral shell
Line is connect with top inner sliding sleeve (8), and top inner sliding sleeve (8) is equipped with ball seat spring seat (26), and ball seat spring seat (26) passes through ball
Seat spring (7) is connect with ball seat spring stability column (5), and inner sliding sleeve (8) outer wall in top is equipped with keyway (25), installation in keyway (25)
Feather key (24), feather key (24) are slidably connected with guide-track groove (28), and guide-track groove (28) is set to the inner wall of top outer sliding sleeve (22)
On, inner sliding sleeve (8) bottom end in top is welded by inner sliding sleeve welding groove (27) and lower part inner sliding sleeve (11)；It is sliding outside the top
It covers (22) and is equipped with outer sliding sleeve through-hole (33).
2. a kind of multifunctional oil gas casing down-hole switch according to claim 1, it is characterised in that: the insertion tube
(31) insertion tube sealing ring (30) are equipped between cannula passage (1).
3. a kind of multifunctional oil gas casing down-hole switch according to claim 1, it is characterised in that: in the top
Inner sliding sleeve sealing ring B(23 is equipped between sliding sleeve (8) and top outer sliding sleeve (22)).
4. a kind of multifunctional oil gas casing down-hole switch according to claim 1, it is characterised in that: outside the lower part
Inner sliding sleeve sealing ring A(10 is equipped between sliding sleeve (29) and lower part inner sliding sleeve (11)).
5. a kind of multifunctional oil gas casing down-hole switch according to claim 1, it is characterised in that: in the top
Sliding sleeve (8), top outer sliding sleeve (22), lower part inner sliding sleeve (11), lower part outer sliding sleeve (29) and insertion tube (31) are all made of nickel chromium triangle conjunction
Golden solution treatment stainless steel austenite material is made.
6. a kind of multifunctional oil gas casing down-hole switch according to claim 1, it is characterised in that: the sealing steel
Ball (2) is using the potassium steel material of subzero treatment and the surface processing technique of best bright finish and circularity.
7. a kind of multifunctional oil gas casing down-hole switch according to claim 1, it is characterised in that: the ball seat is logical
Hole (4) number is equipped with several, and equal distribution is on multi-functional ball seat (3) outer wall.
8. a kind of multifunctional oil gas casing down-hole switch according to claim 2,3 or 4, it is characterised in that: described
Insertion tube sealing ring (30), inner sliding sleeve sealing ring B(23) and inner sliding sleeve sealing ring A(10) it is all made of elastic metallic ring and flexible stone
Ink circle is used in conjunction with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195699.4A CN109707344B (en) | 2019-03-15 | 2019-03-15 | Multifunctional oil-gas well casing downhole switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195699.4A CN109707344B (en) | 2019-03-15 | 2019-03-15 | Multifunctional oil-gas well casing downhole switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707344A true CN109707344A (en) | 2019-05-03 |
| CN109707344B CN109707344B (en) | 2021-02-26 |
Family
ID=66266942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910195699.4A Expired - Fee Related CN109707344B (en) | 2019-03-15 | 2019-03-15 | Multifunctional oil-gas well casing downhole switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707344B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059962A (en) * | 2021-12-03 | 2022-02-18 | 中国石油天然气股份有限公司 | Multiple sealed high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device |
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| CN114059962A (en) * | 2021-12-03 | 2022-02-18 | 中国石油天然气股份有限公司 | Multiple sealed high-pressure high-temperature well injection-production blowout-prevention sliding sleeve device |
| CN114059962B (en) * | 2021-12-03 | 2023-09-08 | 中国石油天然气股份有限公司 | Injection-production blowout-preventing sliding sleeve device for multiple sealing high-pressure high-temperature well |
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| Publication number | Publication date |
|---|---|
| CN109707344B (en) | 2021-02-26 |
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