CN209145571U - A kind of pumpingh well sand control flow string - Google Patents
A kind of pumpingh well sand control flow string Download PDFInfo
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- CN209145571U CN209145571U CN201821588999.6U CN201821588999U CN209145571U CN 209145571 U CN209145571 U CN 209145571U CN 201821588999 U CN201821588999 U CN 201821588999U CN 209145571 U CN209145571 U CN 209145571U
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- pipe
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- inlet valve
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Abstract
The utility model is a kind of pumpingh well sand control flow string, the sand well suitable for petroleum industry.This tubing string includes tubing pump, filter sand central tube and filter assemblies, tubing pump is equipped with piston and pump barrel, piston is connected by sucker rod, and pump barrel top is connect with oil pipe, pump barrel lower part is equipped with inlet valve, and the lower section of pump barrel is successively connect with constant pressure valve, tail pipe, seal pipe and filter sand central tube；It is corresponding with oil reservoir, filter assemblies, the seal pipe external connection packer above oil reservoir are housed, the outside of tail pipe is equipped with ball-and-seat, this flow string bottom is equipped with silk plug outside filter sand central tube；Tubing pump pump barrel above inlet valve is provided with inlet valve switching mechanism, and the impingement holes between the spool and valve seat of inlet valve equipped with spring, spool and inlet valve switching mechanism abut against together；It is connected with the upper overstriking pipe of pump in oil pipe above tubing pump pump barrel, is also equipped with washing pipe in the tail pipe above seal pipe.
Description
Technical field
The utility model relates to the sand control flow string of petroleum industry producing well, especially a kind of pumpingh well sand control production pipe
Column is suitable for sand well.
Background technique
Since sand control operation seriously pollutes oil reservoir, it is long to account for the well period, investment is big, thus the validity period of sand control by
Concern.Through investigating and analysing to the more mouthfuls of sand proof well service life with seal pipe and sand screen, the average effective sand control service life is the more than ten years.
The sand control measure of early stage is mostly resin sand screen, metal wire-winding sand-filtering tube sand control, and the packer for hanging sand screen mainly has
The types packer such as Y211, Y221, Y111,273-4,445, packer moves up in order to prevent, rubber shrinks caused packing
Failure, flow string will pressurize after going into the well on packer.When pressurization, one, band below the tail pipe of sand control flow string lower part
Tubule sealing plug, insertion packer is intracavitary, is pressed on packer top of fish, forms close slotting enclosed tubing string.Due to tail pipe and close
Tube sealing section is small, and oil pumping flow velocity is high, and pumping capacity is strong, takes sand speed greater than sand setting speed, containing sand with fluid from oil reservoir filtering group
Part comes out sealed pipe and tail pipe directly into oil well pump, gives rise to ground by pump, it is therefore prevented that sand grains is sunk in filter assemblies and envelope
Every on device top of fish and on internal surface of sleeve pipe, avoids sand and bury oil reservoir not feed flow.
Currently, there are three sand screen sand control pumpingh well generation sand is main the reason of burying not feed flow: first is that below oil well pump
Casing section casing profile is big, and flow velocity is low, takes sand speed less than sand setting speed, constantly sinks on internal surface of sleeve pipe in crude oil containing sand or mistake
It filters on component top of fish, causes oil reservoir not feed flow.Second is that filter assemblies are washed away sand cutting sand screen by fluid for a long time, shale Extra-fine sand blocks up
Fill in fouling squeeze filter assemblies, formation fluid and well stimulation it is improper to corrosion contamination, the sand-preventing process of filter assemblies and construction
The factors such as off quality influence, and cause sand control to fail, sand setting in the filter sand central tube of filter assemblies, sand buries filter assemblies fish
Top, causes oil reservoir not feed flow.Third is that stratum energy is insufficient, formation pressure is low, and producing pressure differential is big, causes oil reservoir structure to destroy, glue
Knotting strength decline, causes largely to shake out, sand buries oil reservoir not feed flow.
To extend the sand control life, kinds of processes is used, comparative maturity effectively has filling anti-sand, corundum sand screen anti-
Sand etc., validity period longest is also just in 8-13, but to account for the well period longer for this sand-preventing process, invests bigger.In the few, mud that shakes out
In the case where light degree blocking, the measures such as sand screen of changing of pulling out blindly are taken, some accounts for the well period up to nearly 3 months, causes resource
The huge waste of cost of an asset.To extend the inexpensive sand screen sand control life, asset source utilization rate is improved, close insert is used for reference and closes
The working principle and advantage of formula tubing string, the sand control flow string for developing pumpingh well are necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of pumpingh well sand control flow strings, solve shale and the heavy stifled filter sand center of fine sand
The problem of managing, fluid supply capacity caused to decline, and it is made to realize sand washing and backwash well operations while sand control, extend sand control production
The sand control life of tubing string reduces the waste of Resource assets, reduces production cost.
In order to achieve the above object, the utility model adopts the following technical solutions: a kind of pumpingh well sand control flow string includes pipe
Formula oil well pump, filter sand central tube and filter assemblies, tubing pump are equipped with piston and pump barrel, and piston is connected by sucker rod, pump barrel
Top is connect with oil pipe, pump barrel lower part is equipped with inlet valve, and the lower section of pump barrel is successively and in constant pressure valve, tail pipe, seal pipe and filter sand
The connection of heart pipe；It is corresponding with oil reservoir, filter assemblies are housed, the seal pipe external connection envelope above oil reservoir outside filter sand central tube
Every device, the outside of tail pipe is equipped with ball-and-seat, this flow string bottom is equipped with silk plug；In tubing pump pump barrel above inlet valve
Equipped with inlet valve switching mechanism, the shock of spring, spool and inlet valve switching mechanism is housed between the spool and valve seat of inlet valve
Hole abuts against together；The upper overstriking pipe of pump is connected in oil pipe above tubing pump pump barrel, in the tail pipe above seal pipe
It is also equipped with washing pipe.
What the utility model had the advantage that and generated compared with prior art has the active effect that this sand control flow string
It is for being sunk on internal surface of sleeve pipe containing sand or blocking causes oil reservoir not feed flow, filter sand center in filter assemblies and on packer top of fish
Manage in sand setting cause oil reservoir not feed flow the problems such as and develop.Inlet valve is provided between the piston and inlet valve of tubing pump
Switching mechanism by piston slap inlet valve switching mechanism, opens inlet valve, then above mentions piston and enters the upper overstriking pipe of pump, just
Positive well-flushing and sand washing operation can be achieved；The lower end of the washing pipe hung in tail pipe lower lumen is located in filter sand central tube, washing pipe
Can be up and down, sand washing effect is effectively increased, the blocking of shale or the blocking of a small amount of fine sand to oil reservoir and filter assemblies is released, prolongs
The service life for having grown filter assemblies, extends pump detection period, effectively increases the sand control life of flow string, extends anti-
The service life of sand flow string.The utility model can also be achieved backwash well operations, the flushing fluid in oil jacket annulus simultaneously
By the pressure control of constant pressure valve setting, ground is returned to from constant pressure valve, inlet valve, inlet valve switching mechanism and oil pipe.
The utility model, which is avoided, to be made due to shale or a small amount of fine sand to upper caused by the blocking of oil reservoir and filter assemblies
Industry well workover reduces and pulls out the well number for changing sand screen, significantly reduce workover treatment expense, takes full advantage of original production equipment,
With significant using effect and preferable economic benefit can be obtained.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing, not limits the protection scope of the utility model.It is as described below to be only
The preferred embodiment of the utility model, other use the equivalence changes of the utility model, should belong to the protection of the utility model
Range.
Referring to Fig. 1, a kind of pumpingh well sand control flow string includes tubing pump, filter sand central tube 19 and filter assemblies
21, tubing pump is equipped with piston 8 and pump barrel, and piston 8 connects by sucker rod 3, and pump barrel top connect with oil pipe 6, pump barrel lower part
Equipped with inlet valve 10, the lower section of pump barrel is successively connect with constant pressure valve 12, tail pipe 13, seal pipe 17 and filter sand central tube 19；With oil
Layer is corresponding, equipped with filter assemblies 21 outside filter sand central tube 19, the 17 external connection packer 18 of seal pipe above oil reservoir,
The outside of tail pipe 13 is equipped with ball-and-seat 16, this flow string bottom is equipped with silk plug 22.The tubing pump pump of 10 top of inlet valve
Cylinder is provided with inlet valve switching mechanism 9, and spring 11, spool and inlet valve switching on and shutting down are housed between the spool and valve seat of inlet valve 10
The impingement holes of structure 9 abut against together；The upper overstriking pipe 7 of pump is connected in oil pipe 6 above tubing pump pump barrel, in seal pipe 17
Washing pipe 20 is also equipped in the tail pipe 13 of top.
The inlet valve switching mechanism 9 include upper shocks disk and lower shock seat, it is upper hit disk disk body in equipped with liquid flow hole,
The striking face of lower end is matched with the lower continuing surface for hitting seat, and under the shock of piston 8, upper shock disk can be along pump barrel inner wall
In commutation track, on the lower continuing surface for hitting seat rotate and replace.
It is tubular body that the upper top for hitting disk, which is rhabodoid, lower body, and liquid flow hole is located at the upper end of tubular body,
The lower end surface of lower body, which is equipped with, hits tooth, which is that isosceles triangle, tooth tip are downward, the ontology outer circle above tooth root
Equipped with reversing key, which is axial bond, can slide up and down along the commutation track of pump barrel inner wall.
The lower lower part of the seat equipped with centre bore, centre bore of hitting is impingement holes, and the aperture of impingement holes is greater than the centre bore
Aperture；The lower upper surface for hitting seat is equipped with commutating tooth, which is right angled triangle, is that upper shock disk hits toothing
Half, the number of teeth of commutating tooth be also hit the tooth number of teeth half, the denticle part evagination of commutating tooth and along lower shock seat ontology to
Under extend to it is lower hit seat lower end surface, commutating tooth denticle part be formed by outer circle be greater than it is lower hit seat ontology outer circle, etc.
In the outer circle that the reversing key on upper shock disk is formed；When it is upper hit disk shock tooth slamming down under hit seat when, hit tooth and
Commutating tooth, which can slide up and down along the commutation track of pump barrel inner wall and hit tooth, to slide one along the bevel edge of commutating tooth
The distance of commutating tooth.The construction of inlet valve switching mechanism 9 can be with reference to push type ball pen or the switching mechanism of push type pencil.
The inlet valve 10 is equipped with spool, valve seat and spring 11, and the longitudal section of spool is in " scholar " shape structure, the lower part of spool
Ontology is located at the top of valve base center hole, and the upper body of spool is equipped with fixed spring between liquid flow hole, upper body and valve seat
11, the top body of rod of spool and the lower impingement holes hit in seat abut against together.
The internal diameter of overstriking pipe 7 is greater than the outer diameter of piston 8 on pump and the internal diameter of oil pipe 6, its length are greater than the length of piston 8
Degree.When well-flushing, piston 8 can be above mentioned by sucker rod 3 into pumping in upper overstriking pipe 7, without influencing passing through for flushing fluid.
The top outer circle of the washing pipe 20 is equipped with sliding plug 15, and the outer diameter of the sliding plug 15 is less than the internal diameter of tail pipe 13, is greater than tail
The internal diameter of baffle ring 14 in pipe 13, sliding plug 15 are able to drive the upper downslide between two baffle rings 14 in 13 inner cavity of tail pipe of washing pipe 20
It is dynamic.
The lower end of the washing pipe 20 is located in filter sand central tube 19, can be to oil reservoir, filter sand central tube 19 and filter assemblies
21 are rinsed.
In normal production, when tubing pump upstroke, inlet valve 10 is opened；When tubing pump down stroke, inlet valve
10 close.
When positive well-flushing sand washing operation, it is made of sucker rod hanger 1, hoop 2, sucker rod 3, blow valve 4, tee tube 5
Well-flushing wellhead sealing part.Above mentioning sucker rod 3 can be such that piston 8 enters in the upper overstriking pipe 7 of pump, increase captured area；Decentralization oil pumping
Bar 3 can make piston 8 hit inlet valve switching mechanism 9, compressed spring 11, so that the spool of inlet valve 10 is lost non-return effect, then
Above mentioning sucker rod 3 makes piston 8 be detached from inlet valve switching mechanism 9, opens inlet valve 10.Above mention and unload polished rod and wellhead sealing dress
It sets, is connect with sucker rod hanger 1 with 3 top connection of sucker rod, hoop 2 is connect sealing with tee tube 5 with clip skin, will be put
Empty valve 4 is connect with well washing equipment, it is upper mention polished rod while piston 8 above mention and entering in the upper overstriking pipe 7 of pump.Positive well-flushing sand cleaning fluid
Through overstriking pipe 7, inlet valve switching mechanism 9, inlet valve 10, constant pressure valve 12 and tail pipe 13 on blow valve 4, tee tube 5, oil pipe 6, pump
Washing pipe 20 is reached, using the annular space between filter sand central tube 19 and seal pipe 17 and washing pipe 20, is entered from ball-and-seat 16
Oil jacket annulus returns out ground, realizes positive well-flushing sand washing.
When backwash well operations, flushing fluid is squeezed into from casing, through constant pressure valve 12, inlet valve 10, inlet valve switching mechanism 9, pump
Upper overstriking pipe 7, oil pipe 6, tee tube 5, blow valve 4 return out.
The embodiment described above is only exemplary embodiments, but the utility model is not limited only to these embodiments, ability
The technical staff in domain can make modification under the spirit and enlightenment without departing from the utility model.Aspect disclosed herein may
In the presence of many changes, combination and modification, and all in the scope of the utility model, therefore, protection scope is not limited only to above
Explanation.
Claims (8)
1. a kind of pumpingh well sand control flow string, including tubing pump, filter sand central tube and filter assemblies, tubing pump are set
There are piston and pump barrel, piston is connected by sucker rod, and pump barrel top is connect with oil pipe, pump barrel lower part is equipped with inlet valve, under pump barrel
Fang Yici is connect with constant pressure valve, tail pipe, seal pipe and filter sand central tube；It is corresponding with oil reservoir, it was equipped with outside filter sand central tube
Component, the seal pipe external connection packer above oil reservoir are filtered, the outside of tail pipe is equipped with ball-and-seat, this flow string bottom dress
Have silk plug, characterized in that the tubing pump pump barrel above inlet valve is provided with inlet valve switching mechanism, the spool of inlet valve with
Impingement holes between valve seat equipped with spring, spool and inlet valve switching mechanism abut against together；Above tubing pump pump barrel
It is connected with the upper overstriking pipe of pump in oil pipe, is also equipped with washing pipe in the tail pipe above seal pipe.
2. a kind of pumpingh well sand control flow string as described in claim 1, characterized in that the inlet valve switching mechanism includes
Upper shock disk and lower shock seat, it is upper hit disk disk body in be equipped with liquid flow hole, lower end striking face and it is lower hit seat continuing surface
Match, under the shock of piston, it is upper hit disk can along in pump barrel inner wall commutation track, it is lower hit seat continuing surface
On rotate and replace.
3. a kind of pumpingh well sand control flow string as claimed in claim 2, characterized in that the upper top for hitting disk is bar
Shape body, lower body are tubular bodies, and liquid flow hole is located at the upper end of tubular body, are equipped on the lower end surface of lower body and hit tooth,
The shock tooth is that isosceles triangle, tooth tip are downward, and the ontology outer circle above tooth root is equipped with reversing key, the reversing key be axial bond,
It can be slided up and down along the commutation track of pump barrel inner wall.
4. a kind of pumpingh well sand control flow string as claimed in claim 3, characterized in that the lower shock seat is equipped with center
Hole, centre bore lower part be impingement holes, the aperture of impingement holes is greater than the aperture of the centre bore；The lower upper surface for hitting seat, which is equipped with, to be changed
To tooth, which is right angled triangle, is the half that upper shock disk hits toothing, and the number of teeth of commutating tooth is also to hit tooth tooth
Several half, the denticle part evagination of commutating tooth simultaneously extend downward into the lower lower end surface for hitting seat, commutation along lower shock seat ontology
Tooth denticle part be formed by outer circle be greater than the lower ontology outer circle for hitting seat, formed equal to the reversing key on upper shock disk it is outer
Circle；When hitting seat under the upper shock tooth slamming down for hitting disk, hits tooth and commutating tooth can be along the commutation of pump barrel inner wall
Track slides up and down and hits tooth can slide the distance of a commutating tooth along the bevel edge of commutating tooth.
5. a kind of pumpingh well sand control flow string as claimed in claim 4, characterized in that the inlet valve is equipped with spool, valve
Seat and spring, the longitudal section of spool are in " scholar " shape structure, and the lower body of spool is located at the top of valve base center hole, spool it is upper
Portion's ontology is equipped with fixed spring between liquid flow hole, upper body and valve seat, the top body of rod of spool and the lower shock hit in seat
Hole abuts against together.
6. a kind of pumpingh well sand control flow string as claimed in claim 2, characterized in that the internal diameter of overstriking pipe is big on the pump
It is greater than the length of piston in the outer diameter and the internal diameter of oil pipe, its length of piston.
7. a kind of pumpingh well sand control flow string as claimed in claim 6, characterized in that the top outer circle of the washing pipe is equipped with
Sliding plug, the outer diameter of the sliding plug are less than the internal diameter of tail pipe, greater than the internal diameter of baffle ring in tail pipe, and sliding plug is able to drive washing pipe in tail pipe
It is slided up and down between two baffle rings in chamber.
8. a kind of pumpingh well sand control flow string as claimed in claim 1 or 7, characterized in that the lower end of the washing pipe is located at
In filter sand central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821588999.6U CN209145571U (en) | 2018-09-28 | 2018-09-28 | A kind of pumpingh well sand control flow string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821588999.6U CN209145571U (en) | 2018-09-28 | 2018-09-28 | A kind of pumpingh well sand control flow string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209145571U true CN209145571U (en) | 2019-07-23 |
Family
ID=67268335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821588999.6U Expired - Fee Related CN209145571U (en) | 2018-09-28 | 2018-09-28 | A kind of pumpingh well sand control flow string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209145571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425173A (en) * | 2020-05-08 | 2020-07-17 | 克拉玛依胜利高原机械有限公司 | Sand washing and steam injection process for heavy oil well and matching device thereof |
-
2018
- 2018-09-28 CN CN201821588999.6U patent/CN209145571U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425173A (en) * | 2020-05-08 | 2020-07-17 | 克拉玛依胜利高原机械有限公司 | Sand washing and steam injection process for heavy oil well and matching device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20190928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |