CN106285537A - Sand instrument is dragged in injection - Google Patents
Sand instrument is dragged in injection Download PDFInfo
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- CN106285537A CN106285537A CN201510305606.0A CN201510305606A CN106285537A CN 106285537 A CN106285537 A CN 106285537A CN 201510305606 A CN201510305606 A CN 201510305606A CN 106285537 A CN106285537 A CN 106285537A
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- sand
- low pressure
- injection
- pressure chamber
- urceolus
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Abstract
The present invention provides a kind of injection to drag for sand instrument, and including flowing urceolus, wherein, flowing urceolus includes the first joint and the second joint；Being provided with in the inner chamber of flowing urceolus and be sequentially connected logical nozzle installation cavity, low pressure chamber, circulation canal and circulation pipe, wherein, low pressure chamber is between circulation canal and nozzle installation cavity, and the through hole that circulation pipe is corresponding with on the barrel of flowing urceolus is connected；Being provided with trunnion in circulation canal, trunnion connects with low pressure chamber, and the top of trunnion is fixed with low pressure chamber and is connected, and wherein, the diameter at trunnion two ends is more than the diameter of middle body；Being provided with nozzle in nozzle installation cavity, nozzle connects with low pressure chamber.In the present invention, when sand cleaning fluid is sprayed into the middle body of trunnion by nozzle, the speed of sand cleaning fluid increases, low pressure is formed in making the low pressure chamber connected with trunnion, the pressure dragging for sand tool interior increases with outside pressure differential, only need relatively low pump pressure can realize the cleaning to sand setting at the bottom of oil well, improve the efficiency dragging for sand operation.
Description
Technical field
The present invention relates to drag for sand field of tool, particularly relate to a kind of injection and drag for sand instrument.
Background technology
Oil gas is usually located in clastic rock, therefore, during oil well recovering oil gas, and meeting in oil well
There is a lot of sand setting.In order to ensure the normal production of oil gas, need the sand setting in oil well is cleared up, logical
Frequently with dragging for sand instrument, oil well is dragged for sand operation, to clear up the sand setting in oil well.
The sand instrument that drags for of the prior art, is mainly cleared up the sand setting of oil well by circulation sand washing, tool
Body ground, will drag for sand instrument and insert in pit shaft, and be poured into by sand cleaning fluid and drag in sand instrument, by dragging for sand instrument
Pipeline enters oil well, and mixes with the sand setting in oil well, and then carries the sand cleaning fluid of sand setting on ground
Under the effect of pump, arrive outside oil well by dragging for the annular space between sand instrument and pit shaft, thus realize oil well
The cleaning of middle sand setting.
But, use the sand instrument that drags for of the prior art time the sand setting of oil well is cleared up, the most right
When the deeper oil well of well depth carries out sand setting cleaning, it is necessary to assure ground face-pumping has higher pump pressure and higher
Pumpage, the sand cleaning fluid that could carry sand setting is extracted out, and leakage or pump pressure and pump row once occur
When piezometric power does not reaches demand, the sand setting in the annular space dragged between sand instrument and pit shaft can be caused to return
Outside arrival well, cause sand setting to be detained in annular space, form sand bridge, thus reduce the efficiency dragging for sand operation,
And the safety dragging for sand operation may be caused the highest.
Summary of the invention
The present invention provides a kind of injection to drag for sand instrument, is used for solving in prior art, drags for sand instrument and drags for sand work
Industry inefficiency and drag for the problem that sand operational security is the highest.
The present invention provides a kind of injection to drag for sand instrument, including flowing urceolus, wherein, described flowing urceolus bag
Include the first joint and the second joint；
Being provided with in the inner chamber of described flowing urceolus and be sequentially connected logical nozzle installation cavity, low pressure chamber, circulation is logical
Road and circulation pipe, wherein, described low pressure chamber between described circulation canal and described nozzle installation cavity,
The through hole that described circulation pipe is corresponding with on the barrel of described flowing urceolus is connected；
Being provided with trunnion in described circulation canal, described trunnion connects with described low pressure chamber, and described trunnion
Top is fixing with described low pressure chamber to be connected, and wherein, the diameter at described trunnion two ends is straight more than middle body
Footpath；
Being provided with nozzle in described nozzle installation cavity, described nozzle connects with described low pressure chamber.
As it has been described above, the second end of described nozzle stretches into inside low pressure chamber, and the axis of described nozzle and institute
State the dead in line of trunnion.
As it has been described above, also include: sand screen, filter urceolus, bailers and drag for sand drill bit；
Described sand screen is fixing with described second joint to be connected；
Described filtration urceolus is sheathed on the outside of described sand screen, and described filtration urceolus connects with described second
Head is fixing to be connected；
Described bailers is fixing with described filtration urceolus to be connected；
Described drag for that sand drill bit and described bailers are fixing to be connected.
As it has been described above, the outer tube inner chamber of described flowing also includes: at least one pressure transmission through hole；
Wherein, the top of described pressure transmission through hole is connected with described low pressure chamber, and the bottom of described pressure transmission through hole
It is connected with described second joint, and described pressure transmission through hole and described low pressure chamber and described second fittings.
It is during as it has been described above, if the outer tube inner chamber of described flowing is provided with multiple described pressure transmission through hole, the plurality of
Pressure transmission through hole is distributed in around described circulation canal.
As it has been described above, described flowing urceolus is formed by connecting by multiple short cylinders.
Valve seat is installed in dragging for sand drill bit described in as it has been described above, described valve seat is hinged with for closing valve
The valve plate of seat.
It is arranged in described nozzle installation cavity as it has been described above, described nozzle is threadably secured, described nozzle
And it is provided with sealing ring between described nozzle installation cavity；
Shoulder is formed at the bottom of described nozzle installation cavity, described shoulder is provided with for adjusting described nozzle
The adjustment pad of position.
As it has been described above, described trunnion is rotatably connected with described circulation canal, and it is provided with sealing ring.
As it has been described above, described low pressure chamber is hemispherical.
Sand instrument is dragged in the injection that the present invention provides, and including flowing urceolus, wherein, flowing urceolus includes first
Joint and the second joint；The inner chamber of flowing urceolus is provided with and is sequentially connected logical nozzle installation cavity, low pressure chamber,
Circulation canal and circulation pipe, wherein, low pressure chamber, between circulation canal and nozzle installation cavity, circulates
Manage the through hole corresponding with on the barrel of flowing urceolus to be connected；Being provided with trunnion in circulation canal, trunnion is with low
Pressure chamber connects, and the top of trunnion is fixed with low pressure chamber and is connected, wherein, during the diameter at trunnion two ends is more than
Between the diameter of body；Being provided with nozzle in nozzle installation cavity, nozzle connects with low pressure chamber, when sand cleaning fluid is by spraying
When mouth sprays into the middle body of trunnion, the speed of sand cleaning fluid increases so that middle body body forms low pressure
District, owing to low pressure chamber connects with middle body, therefore, also forms low pressure so that injection is dragged in low pressure chamber
The pressure of sand tool interior increases with outside pressure differential, and the sand setting in oil well can be at the work of inside and outside differential pressure
Drag in sand instrument with lower entrance injection, now, it is only necessary to relatively low pump pressure can realize sand setting in oil well
Suck injection and drag for sand tool interior, thus improve the efficiency dragging for sand operation, it is to avoid traditional the dragging for of employing
During sand instrument carries out dragging for sand operation, sand setting is detained in the annular space dragged between sand instrument and pit shaft and makes
The problem of the quiet column pressure stressor layer above Ground of sand cleaning fluid in the annular space become, and then it also avoid owing to dragging for sand
The sand cleaning fluid that the quiet column pressure stressor layer above Ground of the aerial sand cleaning fluid of operation process medium ring is caused enters ground
Layer, the problem causing formation contaminant.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that under,
Accompanying drawing during face describes is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 drags for the structural representation of the embodiment one of sand instrument for the injection that the present invention provides；
Fig. 2 drags for the structural representation of the embodiment two of sand instrument for the injection that the present invention provides；
Fig. 3 drags for the structural representation of sand instrument application scenarios embodiment one for the injection that the present invention provides；
Fig. 4 drags for the flow chart of an embodiment of the using method of sand instrument for the injection that the present invention provides.
Description of reference numerals:
1: flowing urceolus；
2: nozzle；
3: sealing ring；
4: adjust pad；
5: trunnion；
6: filter urceolus；
7: sand screen；
8: bailers；
9: drag for sand drill bit；
10: valve seat；
11: valve plate；
101: the first joints；
102: the second joints；
103: nozzle installation cavity；
104: low pressure chamber；
105: circulation canal；
106: circulation pipe；
107: pressure transmission through hole；
108: middle body；
109: through hole；
110: top；
111: the first ends；
112: the second ends；
200: spray short cylinder；
201: the short cylinder of low pressure chamber；
202: circulate short cylinder；
300: sand instrument is dragged in injection；
400: drilling tool；
500: pit shaft.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Fig. 1 drags for the structural representation of the embodiment one of sand instrument for the injection that the present invention provides, such as Fig. 1 institute
Showing, sand instrument is dragged in injection, and including flowing urceolus 1, wherein, flowing urceolus 1 includes the first joint 101
With the second joint 102.
Specifically, injection is dragged for sand instrument and can be connected by the bottom of the first joint 101 with drilling tool in use
Connect, form the body of connection, and transfer in the pit shaft that sand instrument insertion oil well is dragged in injection by drilling tool so that
Sand cleaning fluid in drilling tool can enter injection and drag for sand instrument, wherein drilling tool can be oil pipe, drilling rod or its
He can be with the tubing string in lower going-into-well.
The inner chamber of flowing urceolus 1 is provided with and is sequentially connected logical nozzle installation cavity 103, low pressure chamber 104, follow
Ring passage 105 and circulation pipe 106, wherein, low pressure chamber 104 is positioned at circulation canal 105 and pacifies with nozzle
Behaveing affectedly between 103, the through hole 109 that circulation pipe 106 is corresponding with on the barrel of flowing urceolus 1 is connected.
Being provided with trunnion 5 in circulation canal 105, trunnion 5 connects with low pressure chamber 104, and the top of trunnion 5
End 110 is fixing with low pressure chamber 104 to be connected, and wherein, the diameter at trunnion 5 two ends is more than middle body 108
Diameter.
Being provided with nozzle 2 in nozzle installation cavity 103, nozzle 2 connects with low pressure chamber 104, and sand work is dragged in injection
In use, sand cleaning fluid sprays in the trunnion 5 connected with low pressure chamber 104 by nozzle 2 tool, sand cleaning fluid
Circulation pipe 106 is flowed into from trunnion 5, and from lead to corresponding with the barrel of flowing urceolus 1 of circulation pipe 106
Hole 109 is discharged to flow in the annular space between urceolus 1 and pit shaft, ground face-pumping will flowing urceolus 1 and pit shaft it
Between annular space in sand cleaning fluid draw back ground recycle.
It should be noted that the diameter at trunnion 5 two ends is more than the diameter of middle body 108；Nozzle is installed
Being provided with nozzle 2 in chamber 103, nozzle 2 connects with low pressure chamber 104, when sand cleaning fluid is injected into by nozzle 2
When entering the middle body 108 of trunnion 5, the speed of sand cleaning fluid increases so that middle body 108 is formed low
Nip, owing to low pressure chamber 104 connects with middle body 108, therefore, is also formed low in low pressure chamber 104
Pressure so that drag for the pressure of sand tool interior and increase with outside pressure differential, the sand setting at the bottom of oil well can including
Enter injection under the effect of external differential to drag in sand instrument.
In the present embodiment, injection is dragged for sand instrument and is included, flow urceolus, and wherein, flowing urceolus includes first
Joint and the second joint；The inner chamber of flowing urceolus is provided with and is sequentially connected logical nozzle installation cavity, low pressure chamber,
Circulation canal and circulation pipe, wherein, low pressure chamber, between circulation canal and nozzle installation cavity, circulates
Manage the through hole corresponding with on the barrel of flowing urceolus to be connected；Being provided with trunnion in circulation canal, trunnion is with low
Pressure chamber connects, and the top of trunnion is fixed with low pressure chamber and is connected, wherein, during the diameter at trunnion two ends is more than
Between the diameter of body；Being provided with nozzle in nozzle installation cavity, nozzle connects with low pressure chamber, when sand cleaning fluid is by spraying
When mouth sprays into the middle body of trunnion, the speed of sand cleaning fluid increases so that middle body body forms low pressure
District, owing to low pressure chamber connects with middle body, therefore, also forms low pressure so that injection is dragged in low pressure chamber
The pressure of sand tool interior increases with outside pressure differential, and the sand setting in oil well can be at the work of inside and outside differential pressure
Drag in sand instrument with lower entrance injection, now, it is only necessary to relatively low pump pressure can realize sinking in oil well
Sand sucks injection and drags for sand tool interior, thus improve the efficiency dragging for sand operation, it is to avoid employing is traditional
Drag for sand instrument carry out dragging for sand setting during sand operation be detained in the annular space dragged between sand instrument and pit shaft and
The problem of the quiet column pressure stressor layer above Ground of sand cleaning fluid in the annular space caused, and then it also avoid owing to dragging for
The sand cleaning fluid that the quiet column pressure stressor layer above Ground of the aerial sand cleaning fluid of sand operation process medium ring is caused enters ground
Layer, the problem causing formation contaminant.
Further, with continued reference to Fig. 1, it is internal that the second end 112 of nozzle 2 stretches into low pressure chamber 104,
And the dead in line of the axis of nozzle 2 and trunnion 5, sand cleaning fluid can directly spray into and low pressure from nozzle 2
In the trunnion 5 of chamber 104 connection, improve low pressure chamber 104 and form the efficiency of low pressure.
Nozzle 2 is threadably secured and is arranged in nozzle installation cavity 103, nozzle 2 and nozzle installation cavity 103
Between be provided with sealing ring 3, it is ensured that the sealing between nozzle 2 and nozzle installation cavity 103.
Shoulder is formed at the bottom of nozzle installation cavity 103, and shoulder is provided with the position for adjusting nozzle 2
Adjustment pad 4, can by adjust adjust pad 4 make the axis of nozzle 2 and the axis weight of trunnion 5
Close.
Alternatively, the diameter of the first end 111 of nozzle is more than the diameter of the second end 112, and sand cleaning fluid is from spray
First end 111 of mouth flows to speed during the second end 112 to be accelerated, thus is sprayed into by sand cleaning fluid and low pressure chamber 104
In the trunnion 5 being connected.
Trunnion 5 is rotatably connected with circulation canal 105, and is provided with sealing ring, specifically, outside trunnion 5
Side is provided with external screw thread, is provided with female thread inside circulation canal 105, i.e. trunnion 5 and circulation canal 105
Can be connected by screw thread rotation, but and as limit.
Alternatively, low pressure chamber 4 is hemispherical, increases the volume of low pressure chamber 4, when sand cleaning fluid is by nozzle
2 when spraying into the trunnion 5 connected with low pressure chamber 4, and beneficially low pressure chamber 104 forms low-pressure area.
Injection is dragged for sand instrument and is also included: sand screen 7, filters urceolus 6, bailers 8 and drags for sand drill bit 9.
Wherein, sand screen 7 is fixing with the second joint 102 to be connected, in dragging for sand job engineering, and sand screen
7 enter in flowing urceolus 1 for the sand setting stoping injection to drag in sand instrument.
Filter urceolus 6 and be sheathed on the outside of sand screen 7, and filtration urceolus 6 and the second joint 102 are fixed
Connect, filter urceolus 6 for the sand setting that entry deterrence injection is dragged in sand instrument enter injection drag for sand instrument with
In annular space between pit shaft.
Specifically, the inside of the second joint 102 is stretched at the top of sand screen 7, and with the second joint 102
Fixing connection；Filter urceolus 6 and be sheathed on the outside of sand screen 7, and the top filtering urceolus 6 is sheathed on
Outside second joint 102, and fixing with the second joint 102 it is connected.
It should be noted that the second joint 102 can be provided with female thread and external screw thread, wherein, sand screen
The top of 7 is fixed connected by female thread and second joint 102 of the second joint 102, filters urceolus 6
Top by the external screw thread of the second joint 102 and the second fixing connection of joint 102, but not as
Limit.
Bailers 8 is fixing with filtration urceolus 6 to be connected, and in dragging for sand operation process, enters injection and drags for sand work
The sand setting of tool deposits in bailers 8.
Drag for that sand drill bit 9 and bailers 8 is fixing to be connected, wherein, valve seat 10 be installed in dragging for sand drill bit 9,
Being hinged with the valve plate 11 for closed valve seat 10 on valve seat 10, specifically, valve plate 11 leads to valve seat 10
Cross chain connection, between valve plate 11 and valve seat 10, be additionally provided with spring, when injection being dragged for enter under sand instrument
During appointment position in oil well, drag for injection sand cleaning fluid in sand instrument to injection so that shape in low pressure chamber 104
Become low pressure, drag for the pressure differential between inside and the outside of sand instrument and increase, valve under the effect of inside and outside differential pressure
Spring between plate 11 compression valve plate 11 and valve seat 10 makes valve plate 11 upwardly open, sinking in oil well
Sand can enter into injection from valve seat 10 and drag for sand instrument, and when dragging for after sand completes, the interior of sand instrument is dragged in injection
Pressure differential between portion and outside reduces, and valve plate 11 is automatically switched off under the action of the spring and makes valve seat 10 envelope
Close, now staff can by propose injection and drag for sand instrument to ground, such that it is able to sand is dragged in cleaning
Sand setting in cylinder 8.
Further, in another embodiment, flowing urceolus 1 inner chamber also includes: at least one pressure transmission is led to
Hole 107；
Wherein, the top of pressure transmission through hole 107 is connected with low pressure chamber 104, and the bottom of pressure transmission through hole 107
It is connected with the second joint 102, and pressure transmission through hole 107 connects with low pressure chamber 104 and the second joint 102,
Due to the second joint 102 successively with filter urceolus 6, sand screen 7, bailers 8 and drag for sand drill bit 9 even
Logical so that when low pressure chamber 104 is in low-pressure state, filter urceolus 6, sand screen 7, bailers 8 with
And it is also at low-pressure state in dragging for the internal pipeline of sand drill bit 9.
If be provided with multiple pressure transmission through hole 107 in flowing urceolus 1 inner chamber, multiple pressure transmission through holes 107 are distributed
Around circulation canal 105.
Alternatively, multiple pressure transmission through holes 107 are evenly distributed in circulation canal 105 around, improve
Low pressure chamber 104 and the connectedness of the second joint 102.
Fig. 2 drags for the structural representation of the embodiment two of sand instrument for the injection that the present invention provides, such as Fig. 2 institute
Stating, on the basis of above-described embodiment, flowing urceolus 1 is formed by connecting by multiple short cylinders.
Specifically, flowing urceolus 1 can include spraying short cylinder 200, the short cylinder of low pressure chamber 201 and circulation
Short cylinder 202, but be not limited thereto.
Include nozzle installation cavity 103 it should be noted that spray short cylinder 200 and be arranged on nozzle installation cavity
Nozzle 2 in 103, the short cylinder of low pressure chamber 201 includes low pressure chamber 104, circulates short cylinder 202 and includes that circulation is logical
Road 105, trunnion 5 and circulation pipe 106, during use, will spray short cylinder 200, the short cylinder of low pressure chamber 201,
Circulate short cylinder 202 to assemble successively.
Fig. 3 drags for the structural representation of sand instrument application scenarios embodiment one for the injection that the present invention provides, as
Shown in Fig. 3, time specifically used, injection is dragged for sand instrument 300 and is connected with the bottom of drilling tool 400, the company of being formed
Logical body so that the sand cleaning fluid in drilling tool 400 can enter injection and drag for sand instrument 300.
Injection is dragged for the outer sheath of sand instrument 300 and drilling tool 400 and is provided with pit shaft 500, this pit shaft 500 and spray
Penetrate and drag for formation annular space between sand instrument 300 and drilling tool 400.
It should be noted that injection drag for the first joint 101 of sand instrument 300 can be provided with female thread or
Person's external screw thread, injection drag for sand instrument 300 in use can by the female thread of the first joint 101 or
External screw thread is fixing with the bottom of drilling tool 400 to be connected.
Fig. 4 drags for the flow chart of an embodiment of the using method of sand instrument for the injection that the present invention provides, as
Shown in Fig. 4, the method includes:
S101, injection is dragged for sand instrument transfer to default oil well depth.
As it is shown on figure 3, injection drags for sand instrument in use, injection is dragged for the first joint and the brill of sand instrument
The bottom of tool connects, and injection is dragged for sand instrument transfers to default oil well depth by transferring drilling tool.
S102, employing are dragged for sand drill bit and are stirred the sand of sedimentation, drag in sand instrument to injection simultaneously and inject
Sand cleaning fluid so that form low pressure in low pressure chamber, at effect lower valve plate compression valve plate and the valve seat of inside and outside differential pressure
Between spring valve plate is upwardly opened, the sand setting in oil well enters into inside bailers by valve seat,
Wherein, sand cleaning fluid is sprayed in trunnion by nozzle, and sand cleaning fluid arrives circulation pipe through trunnion, finally by following
The through hole that endless tube is corresponding with on the barrel of flowing urceolus is discharged to spray and drags in the sand instrument annular space with pit shaft.
It should be noted that when sand cleaning fluid is sprayed into the middle body of trunnion by nozzle, due to trunnion two ends
Diameter more than the diameter of middle body, sand cleaning fluid enters middle the body speed per hour degree increase of trunnion so that
Intervalve body forms low-pressure area, owing to low pressure chamber connects with middle body, therefore, is also formed in low pressure chamber
Low pressure so that the pressure dragging for sand tool interior increases with outside pressure differential, under the effect of inside and outside differential pressure
Sand setting in oil well enters into inside bailers by valve seat, now, it is only necessary to the pressure of ground face-pumping is
Sand setting in oil well can be sucked injection and drag for sand tool interior by 10-30Mpa.
After S103, bailers are filled, valve plate is automatically switched off and makes valve seat close, and above proposes injection and drags for sand instrument,
Sand setting in cleaning bailers.
It should be noted that after bailers fills sand setting, injection is dragged between inside and the outside of sand instrument
Pressure differential reduces, and valve plate is automatically switched off under the action of the spring.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to foregoing embodiments, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be repaiied by it
Change, or the most some or all of technical characteristic is carried out equivalent；And these are revised or replace
Change, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. sand instrument is dragged in an injection, it is characterised in that include the urceolus that flows, wherein, outside described flowing
Cylinder includes the first joint and the second joint；
Being provided with in the inner chamber of described flowing urceolus and be sequentially connected logical nozzle installation cavity, low pressure chamber, circulation is logical
Road and circulation pipe, wherein, described low pressure chamber between described circulation canal and described nozzle installation cavity,
The through hole that described circulation pipe is corresponding with on the barrel of described flowing urceolus is connected；
Being provided with trunnion in described circulation canal, described trunnion connects with described low pressure chamber, and described trunnion
Top is fixing with described low pressure chamber to be connected, and wherein, the diameter at described trunnion two ends is straight more than middle body
Footpath；
Being provided with nozzle in described nozzle installation cavity, described nozzle connects with described low pressure chamber.
Sand instrument is dragged in injection the most according to claim 1, it is characterised in that the of described nozzle
Two ends stretch into inside low pressure chamber, and the dead in line of the axis of described nozzle and described trunnion.
Sand instrument is dragged in injection the most according to claim 1 and 2, it is characterised in that also include: filter
Sandpipe, filter urceolus, bailers and drag for sand drill bit；
Described sand screen is fixing with described second joint to be connected；
Described filtration urceolus is sheathed on the outside of described sand screen, and described filtration urceolus connects with described second
Head is fixing to be connected；
Described bailers is fixing with described filtration urceolus to be connected；
Described drag for that sand drill bit and described bailers are fixing to be connected.
Sand instrument is dragged in injection the most according to claim 3, it is characterised in that described flowing urceolus
Inner chamber also includes: at least one pressure transmission through hole；
Wherein, the top of described pressure transmission through hole is connected with described low pressure chamber, and the bottom of described pressure transmission through hole
It is connected with described second joint, and described pressure transmission through hole and described low pressure chamber and described second fittings.
Sand instrument is dragged in injection the most according to claim 4, it is characterised in that if outside described flowing
When being provided with multiple described pressure transmission through hole in tube inner chamber, the plurality of pressure transmission through hole is distributed in described circulation canal
Around.
Sand instrument is dragged in injection the most according to claim 5, it is characterised in that described flowing urceolus
It is formed by connecting by multiple short cylinders.
Sand instrument is dragged in injection the most according to claim 3, it is characterised in that described in drag for sand drill bit
Valve seat is inside installed, described valve seat is hinged with the valve plate for closed valve seat.
Sand instrument is dragged in injection the most according to claim 1, it is characterised in that described nozzle passes through
It is screwed and is arranged in described nozzle installation cavity, be provided with between described nozzle and described nozzle installation cavity
Sealing ring；
Shoulder is formed at the bottom of described nozzle installation cavity, described shoulder is provided with for adjusting described nozzle
The adjustment pad of position.
Sand instrument is dragged in injection the most according to claim 1, it is characterised in that described trunnion and institute
State circulation canal to be rotatably connected, and be provided with sealing ring.
Sand instrument is dragged in injection the most according to claim 1, it is characterised in that described low pressure chamber is
Hemispherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305606.0A CN106285537B (en) | 2015-06-05 | 2015-06-05 | Injection fishing sand tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305606.0A CN106285537B (en) | 2015-06-05 | 2015-06-05 | Injection fishing sand tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106285537A true CN106285537A (en) | 2017-01-04 |
| CN106285537B CN106285537B (en) | 2019-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510305606.0A Active CN106285537B (en) | 2015-06-05 | 2015-06-05 | Injection fishing sand tool |
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| CN (1) | CN106285537B (en) |
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|---|---|---|---|---|
| CN108266140A (en) * | 2018-01-15 | 2018-07-10 | 中国石油天然气股份有限公司 | Suction-type is vortexed well-washing device |
| CN108266140B (en) * | 2018-01-15 | 2020-09-18 | 中国石油天然气股份有限公司 | Suction type vortex well flushing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106285537B (en) | 2019-01-18 |
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