CN206458588U - Sand-catching apparatus on sucker rod pump pump - Google Patents
Sand-catching apparatus on sucker rod pump pump Download PDFInfo
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- CN206458588U CN206458588U CN201720038795.4U CN201720038795U CN206458588U CN 206458588 U CN206458588 U CN 206458588U CN 201720038795 U CN201720038795 U CN 201720038795U CN 206458588 U CN206458588 U CN 206458588U
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- pump
- sand
- sucker rod
- inner cylinder
- outer barrel
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Abstract
The utility model proposes sand-catching apparatus on a kind of sucker rod pump pump, it is related to petroleum production engineering field, sand-catching apparatus includes the outer barrel and inner cylinder being vertically arranged on the sucker rod pump pump, inner cylinder is set in outer barrel and the storage sand space of annular is formed between outer barrel, store up the bottom end closure in sand space, there is the slot for allowing liquid stream to pass through on the side wall of inner cylinder, the top of inner cylinder be provided with allow the plunger of oil well pump by and can hold the elastic sealing element of sucker rod tightly, the guiding cup in hollow inversed taper platform shape is provided with outer barrel, guiding cup is located above inner cylinder and is coaxially disposed with inner cylinder, guiding cup, which has, can allow the centre bore that plunger passes through, the multiple through holes for allowing liquid stream to pass through are offered on the side wall for guiding cup.Sand-catching apparatus can ensure that plunger and sucker rod pass through and enter pump barrel on the sucker rod pump pump, and easy to install, fault rate is low.
Description
Technical field
The utility model is related to petroleum production engineering field, and more particularly to oil well is integrated on a kind of sucker rod pump pump in anti-sediment outflow field
Sand-catching apparatus.
Background technology
With the progressively progress of oil well production, repeatedly implemented by reservoir loose cementation, strata pressure decline, well stimulation,
Amplify the influence of the factors such as producing pressure differential, oil well can occur the problem of shaking out in various degree, be embodied in sand and bury reservoir, sand card etc. now
As.In this regard, scene solves sand and buries reservoir and sand grains with well liquid by taking out substantially by taking the means such as sand control screen, sand-preventing pump
Oil pump lower end into pump barrel cause holddown the problem of, but found by live follow-up investigation, holddown phenomenon frequency after bumping off a well
Numerous, oil recovery technique personnel think that the main cause for this problem occur is to stop taking out the sand grains and impurities sink down in rear oil pipe, from oil pumping
Pump upper end enters plunger and holddown is caused in pump barrel gap, and solution problem preferably on pump, it is necessary to apply sand-catching apparatus.
For pumpingh well, due to exist in its oil pipe on rod string, pump sand-catching apparatus design and installation difficulty compared with
Greatly.Existing sand-catching apparatus generally comprises outer tube and the screen casing being arranged in outer tube, has annular space between outer tube and screen casing,
The top of sand control screen is provided with elastic sealing element, and sucker rod runs through elastic sealing element and sand control screen, and elastic sealing element will pump
Bar is held tightly.The oil pipe that sieve aperture of the liquid through screen casing enters above sand-catching apparatus through annular space on pump when sucker rod is up, oil pumping
When bar is descending or stops, flow rate of liquid declines or stopped on pump, and sand therein is stopped by elastic sealing element, sinks to screen casing and outer tube
Between annular space.
Existing sand-catching apparatus has is connected with piston on a unsurmountable defect, sucker rod, during tripping in sucker rod,
The piston of sucker rod lower band has to pass through elastic sealing element, and elastic sealing element is softened and allows piston to pass through, elastic afterwards close
Sealing holds sucker rod tightly, and in above process, the piston on sucker rod is extremely easily stuck at elastic sealing element or annular space
Place, and can not smoothly pass through sand-catching apparatus and enter in pump barrel, influence the normal production of pumpingh well.For drawbacks described above, at present still
Without ripe solution.
To this according to the production design experiences for being engaged in this area and association area for many years, a kind of sucker rod pump pump is developed
Upper sand-catching apparatus, to solve the defect of above-mentioned prior art.
Utility model content
The purpose of this utility model is to provide sand-catching apparatus on a kind of sucker rod pump pump, can ensure that the post being connected on sucker rod
Plug passes through and enters pump barrel, and easy to install, fault rate is low.
To reach above-mentioned purpose, the utility model proposes sand-catching apparatus on a kind of sucker rod pump pump, wherein, the sucker rod pump
Sand-catching apparatus includes the outer barrel and inner cylinder being vertically arranged on pump, and the inner cylinder is set in the outer barrel and between the outer barrel
Formed on the storage sand space of annular, the bottom end closure in the storage sand space, the side wall of the inner cylinder to have and allow what liquid stream passed through
Slot, the top of the inner cylinder be provided with allow the plunger of oil well pump by and the elastic sealing element of sucker rod can be held tightly, it is described
The guiding cup in hollow inversed taper platform shape is provided with outer barrel, the guiding cup is located above the inner cylinder and coaxial with the inner cylinder
Set, the guiding cup, which has, can allow the centre bore that the plunger passes through, permission liquid is offered on the side wall of the guiding cup
Multiple through holes that stream passes through.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, set on the inwall of the outer barrel along the circumference of the outer barrel
There is the limited step of a circle convex, the flange turned up is enclosed on the top of the guiding cup provided with one, and the flange is fixed in institute
State on limited step.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, offered on the side wall of the limited step above and below a plurality of
The bypass groove of insertion, the outer wall of the inwall of the bypass groove and the guiding cup encloses to form bypass flow channel, a plurality of described
Bypass flow channel is provided at circumferentially spaced along the outer barrel.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, the outer barrel includes tubular top connection, outer barrel sheet
Body and lower contact, the upper and lower ends of the outer barrel body are inserted into the top connection and the lower contact respectively, described spacing
Step is arranged on the inwall of the top connection.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, week of the lower contact inner wall surface thereof along the lower contact
To the installation step provided with a circle convex, the bottom of the inner cylinder is provided with end cap, and the end cap is the post that cross section is annular
Shape body, the internal face of the end cap is fixedly connected with the outside wall surface of the inner cylinder, the outside wall surface of the end cap and the lower contact
Internal face be brought into close contact, the bottom surface of the end cap is overlapped on the installation step.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, the elastic sealing element is leather cup, and the leather cup is hollow
Cone table, the bottom of the leather cup is set in the top of the inner cylinder and is tightly connected with the inner cylinder, the top of the leather cup
End offers the center through hole for allowing the plunger to pass through.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, the inner cylinder includes sequential series connection from top to bottom
The a plurality of slot is offered on central tube and screen casing, the screen casing.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, centralizer is additionally provided between the outer barrel and the inner cylinder,
The centralizer is set on the outer wall of the central tube.
Sand-catching apparatus on sucker rod pump pump as described above, wherein, the centralizer is bow spring centralizer.
Compared with prior art, the utility model has the characteristics that and advantage：
The utility model proposes sucker rod pump pump on sand-catching apparatus be arranged on oil well pump top, in tripping in plunger and oil pumping
During pump, plunger can pass through elastic sealing element under the guiding of guiding cup and inner cylinder enters in pump barrel.Due to guiding cup and interior
Cylinder is coaxially disposed, under guiding cup guiding, plunger and elastic sealing element and the strict centering of inner cylinder, it is ensured that plunger can be passed through
Sand-catching apparatus enters pump barrel, is stuck at elastic sealing element or stores up in sand space without inclination or sideslip.
The utility model proposes sucker rod pump pump on sand-catching apparatus, it guides cup to devise larger centre bore and multiple logical
Hole, it is ensured that sucker rod still has enough production fluid (crude oil) flow channels through sand-catching apparatus after guiding cup, it is to avoid
Because of the harmful effect for setting guiding cup to produce tubing string conveying capacity.
The utility model proposes sucker rod pump pump on sand-catching apparatus be arranged on oil well pump above, with storage sand, automatically cleaning punching
Sand function, can avoid the holddown caused by low liquid producing well prop-carrying capacity deficiency or oil well interval from producing the holddown caused, especially
It is avoided that the holddown occurred after bumping off a well.
Brief description of the drawings
Accompanying drawing described here is only used for task of explanation, and is not intended in any way limit disclosed in the utility model
Scope.In addition, shape and proportional sizes of each part in figure etc. are only schematical, it is used to help to reason of the present utility model
Solution, is not the specific shape and proportional sizes for limiting each part of the utility model.Those skilled in the art is new in this practicality
Under the teaching of type, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.
Fig. 1 be the utility model proposes sucker rod pump pump on sand-catching apparatus structural representation；
Fig. 2 is the structural representation of guiding cup in the utility model；
Fig. 3 is the structural representation of limited step in the utility model.
Description of reference numerals：
100 sand-catching apparatus；110 outer barrels；
111 limited steps；112 bypass grooves；
113 top connections；114 outer barrel bodies；
115 lower contacts；116 installation steps；
120 inner cylinders；121 slots；
122 end caps；123 central tubes；
124 screen casings；130 storage sand spaces；
140 elastic sealing elements；141 center through hole；
150 guiding cups；151 centre bores；
152 through holes；153 flanges；
160 bypass flow channels；170 centralizers.
Embodiment
With reference to the description of accompanying drawing and the utility model embodiment, can clearly it understand of the present utility model
Details.But, embodiment of the present utility model described here is only used for explaining the purpose of this utility model, without
It can be understood as being to limitation of the present utility model in any way.Under teaching of the present utility model, technical staff is contemplated that
Based on any possible deformation of the present utility model, these are regarded as belonging to scope of the present utility model.
Refer to Fig. 1 and Fig. 2, Fig. 1 be the utility model proposes sucker rod pump pump on sand-catching apparatus structural representation；Figure
2 be the structural representation of guiding cup in the utility model；As shown in figure 1, the utility model proposes sucker rod pump pump on sand setting dress
100 outer barrels 110 and inner cylinder 120 for including being vertically arranged are put, inner cylinder 120 is set in outer barrel 110 and formed between outer barrel 110
There are the storage sand space 130 of annular, the bottom end closure in storage sand space 130, the open top end in storage sand space 130, the side of inner cylinder 120
There is the slot 121 for allowing liquid stream to pass through, the top of inner cylinder 120 is provided with the plunger of permission oil well pump by can simultaneously hold tightly on wall
The elastic sealing element 140 of sucker rod, elastic sealing element 140 is flexible, and it can hold sucker rod tightly and be formed between sucker rod
Be provided with elastic packing, it is ensured that crude oil will not be into and out by the top of inner cylinder 120, outer barrel 110 is in hollow inversed taper platform shape
Guiding cup 150, guiding cup 150 is located at the top of inner cylinder 120 and is coaxially disposed with inner cylinder 120, as shown in Fig. 2 guiding cup 150
With the centre bore 151 that plunger can be allowed to pass through, allow liquid stream to pass through multiple are offered on the side wall for guiding cup 150 and are passed through up and down
Logical through hole 152.
The utility model proposes sucker rod pump pump on sand-catching apparatus 100 be arranged on the upper end of oil well pump, tripping in plunger and take out
During oil pump, plunger enters in pump barrel under the guiding of guiding cup 150 through elastic sealing element 140 and inner cylinder 120.Due to guiding cup
150 and inner cylinder be coaxially disposed, in the case where guiding cup 150 is guided, plunger and elastic sealing element 140 and the strict centering of inner cylinder 120, it is ensured that
Plunger can pass through sand-catching apparatus 100 on sucker rod pump pump and enter pump barrel, without tilt or sideslip be stuck it is close in elasticity
At sealing 140 or at storage sand space 130.Meanwhile, offer that multiple permission liquid pass through on the side wall of guiding cup 150 is logical
Hole, and then reduce because setting guiding cup 150 and occupied crude oil flow passage, it is ensured that on sucker rod pump pump in sand-catching apparatus 100
Still there is enough spaces to be used for crude oil flow, because guiding cup 150 devises larger centre bore 151 and multiple through holes
152, it is ensured that sucker rod still has enough production fluids (former through sand-catching apparatus 100 on sucker rod pump pump after guiding cup 150
Oil) flow channel, it is to avoid because of the harmful effect for setting guiding 150 pairs of tubing string conveying capacitys of cup to produce.
The utility model proposes sucker rod pump pump on sand-catching apparatus 100 be arranged on oil well pump above, with storage sand, automatically cleaning
Sand washing function, can avoid the holddown caused by low liquid producing well prop-carrying capacity deficiency or oil well interval from producing the holddown caused, special
The holddown occurred after bumping off a well is not avoided that.
In the utility model, elastic sealing element 140 can hold sucker rod tightly, and then by sucker rod and the upper end of inner cylinder 120
Between annular space closing, crude oil can only circulate through storing up sand space 130, and so, storage sand space 130 not only there is sand setting to make
With being also production fluid (crude oil) passage, it is possible to use the souring of production fluid realizes that the pressure in storage sand space 130 is self-cleaning, keeps away
Exempt from because the sand grains of storage sand space 130 are heavy full and caused by sucker rod pump pump sand-catching apparatus 100 fail.
Meanwhile, a plurality of connection of slot 121 storage sand space 130 and the inner chamber of inner cylinder 120 are offered on the side wall of inner cylinder 120,
A plurality of slot 121 provides sufficiently large sand washing runner, not only ensure that the automatically cleaning effect in storage sand space 130, meanwhile, work as oil
Well stops taking out, and when crude oil flow velocity declines or be descending (now the prop-carrying capacity of crude oil is substantially reduced), slot 121 can also be in crude oil
Sand grains and impurity stopped, be prevented effectively from sand grains and enter production fluid mainstream channel and pump barrel through inner cylinder 120 and cause holddown.
The utility model proposes sucker rod pump pump on sand-catching apparatus 100 use process it is as follows：
During oil well oil-pumping, crude oil is flowed into by the bottom of inner cylinder 120, and it is elastic close that sucker rod and elastic sealing element 140 are formed
Envelope blocks that crude oil is up, and crude oil can only enter storage sand space 130 by the slot 121 on inner cylinder 120, afterwards channeled cup again
150 centre bore 151 and multiple through holes 152 is flowed upwards out.
The moment bumped off a well, the crude oil carrying sand grains of the top of sand-catching apparatus 100 enters outer barrel on sucker rod pump pump
In 110 and come downwards at elastic sealing element 140, sand-laden fluid is stopped by elastic sealing element 140, then the storage sand for entering annular is empty
Between in 130；In storage sand space 130, sand-laden fluid flows decrease, prop-carrying capacity declines, and it is empty that sand grains therein is deposited on storage sand
Between in 130, liquid enters the inside of inner tube 120 by slot 121 and continues to flow down, and then realizes sand setting effect.
Oil well rises again when taking out, and due to sucker rod and elastic packing that elastic sealing element 140 is formed, to block crude oil up,
Crude oil can only enter storage sand space 130 by the slot 121 on inner cylinder 120, and crude oil carries storage after entering storage sand space 130
The sand grains and impurity of deposition entered to guide the centre bore 151 and multiple through holes 152 of cup 150 up and flow to position in sand space 130
In the oil pipe of the top of sand-catching apparatus on sucker rod pump pump 100, so as to complete to store up the automatically cleaning process in sand space 130, it can avoid
Storage sand space 130 causes the failure of sand-catching apparatus 100 on sucker rod pump pump after sinking completely.
In one optional example of the utility model, as shown in figure 1, being set on the inwall of outer barrel 110 along the circumference of outer barrel
There is the limited step 111 of a circle convex, the flange 153 turned up is enclosed on the top of guiding cup 150 provided with one, and flange 153 is fixed
On limited step 111.
In one optional example of the utility model, as shown in figure 3, limited step 111 is designed as discontinuous step, limit
The bypass groove 112 of a plurality of up/down perforation is offered on the side wall of position step 111, the inwall and guiding cup 150 of groove 112 is bypassed
Outer wall enclose to form bypass flow channel 160, a plurality of bypass groove 112 is along being provided at circumferentially spaced of outer barrel 110 (i.e. a plurality of bypass stream
Logical 160 being provided at circumferentially spaced along outer barrel 110), crude oil can pass through bypass flow channel 160 unimpededly upstream or downstream, oil well oil-pumping
When, production fluid can be entered by guiding the centre bore 151, multiple through holes 152 and array bypass flow channel 160 of cup 150 simultaneously up
One step ensure that sucker rod still has enough production fluid stream through sand-catching apparatus 100 on sucker rod pump pump after guiding cup 150
Dynamic passage.
In one optional example of the utility model, the locating part of convex is also provided with the inwall of outer barrel 110
(being not shown), the locating part, which is located at the top of limited step 111 and can limited, guides cup 150 up.So, cup is guided
150 are just limited between limited step 111 and locating part, without departing from sand-catching apparatus 100 on sucker rod pump pump, it is ensured that guiding
Cup 150 lasting can play a role.
In the utility model in another optional example, locating part can be not provided with outer barrel 110, but on outer barrel
End is connected with the oil pipe variable buckle relative to outer barrel undergauge, up by oil pipe variable buckle limitation guiding cup 150, and guiding cup 150 is limited
Position is on sucker rod pump pump inside sand-catching apparatus 100.Or, the upper end of outer barrel 110 is connected with oil pipe, and outer barrel is inserted in the bottom of oil pipe
It is interior, prevent guiding cup 150 up.
In one optional example of the utility model, as shown in figure 1, outer barrel 110 includes top connection 113, outer barrel body
114 and lower contact 115, top connection 113, outer barrel body 114 and lower contact 115 are cylindrical in shape, the upper and lower ends of outer barrel body 114
It is inserted into respectively in top connection 113 and in lower contact 115, limited step 111 is arranged on the inwall of top connection 113.
In an optional example, the installation for being circumferentially with a circle convex of the internal face of lower contact 115 along lower contact
Step 116, the bottom of inner cylinder 120 is provided with end cap 122, and end cap 122 is set in lower contact 115, and end cap 122 is cross section
For the column of annular, the internal face of end cap 122 is fixedly connected with the outside wall surface of inner cylinder 120, and the outside wall surface of end cap 122 is with
The internal face of joint 115 is brought into close contact, and will store up the bottom end closure in sand space 130, the bottom surface of end cap 122 is overlapped on erecting bed
On rank 116.
Wherein, between top connection 113 and outer barrel body 114, between outer barrel body 114 and lower contact 115, inner cylinder 120 with
Screwed connection can be used between end cap 122.The utility model proposes sucker rod pump pump on sand-catching apparatus 100 assembling when,
End cap 122 is first tightened in the lower end of inner cylinder 120；Afterwards, end cap 122 is ridden upon on the installation step 116 of lower contact 115；
Then, outer barrel body 114 is enclosed on outside inner cylinder 120, the lower end of outer barrel body 114 is inserted in lower contact 115 and and lower contact
115 screwed connections, end cap 122 is limited between the lower end of installation step 116 and outer barrel body 114；Then, by top connection
113 be sleeved on the upper end of outer barrel body 114 and with the screwed connection of outer barrel body 114；Finally, guiding cup 150 is ridden upon spacing
On step 111.From said process, the utility model proposes sucker rod pump pump on sand-catching apparatus 100 its simple in construction, dismounting
It is convenient, it is easy to processing.
In one optional example of the utility model, as shown in figure 1, elastic sealing element 140 is leather cup, leather cup is hollow
Cone table, the bottom of leather cup is set in the top of inner cylinder 120 and is tightly connected with inner cylinder 120, and the top of leather cup offers fair
Perhaps the center through hole 141 that plunger passes through.The larger plunger of external diameter and rod collar by when, leather cup swells, and causes post
Plug and rod collar can be passed through, afterwards, and leather cup reduces and holds oil pumping bar body formation elastic packing tightly.
In one optional example of the utility model, as shown in figure 1, inner cylinder 120 connects including sequential series from top to bottom
A plurality of slot 121 is offered on the central tube 123 and screen casing 124 connect, screen casing 124.
In one optional example of the utility model, as shown in figure 1, being additionally provided with righting between outer barrel 110 and inner cylinder 120
Device 170, centralizer 170 is set on the outer wall of central tube 123.Centralizer 170 can guarantee that central tube 123 and outer barrel 110 are kept
It is concentric, and be engaged with guiding cup 150, it is ensured that during tripping in sucker rod, plunger and elastic sealing element 140 (leather cup) and center
The strict centering of pipe 123, it is to avoid plunger is stuck at elastic sealing element 140 or stored up in sand space 130, further ensures that plunger is smoothly worn
More sand-catching apparatus 100 enters pump barrel on sucker rod pump pump.Centralizer 170 can also reduce central tube 123 and screen casing 124 in oil pumping
Vibration during bar up and down motion, it is ensured that elastic sealing element 140 is concentric all the time with sucker rod, it is to avoid elastic sealing element 140
Too early eccentric wear.
In an optional example, as shown in figure 1, centralizer 170 is bow spring centralizer, fluid is not influenceed to lead to
Cross.
For explaining in detail for the respective embodiments described above, its purpose is only that to explain to the utility model, in order to
The utility model is better understood when, still, these descriptions can not be with any explanation into being to limit of the present utility model
System, particularly, each feature described in various embodiments can also be mutually combined, so as to constitute other implementations
Mode, except there is clearly opposite description, these features should be understood to be applied in any one embodiment, and simultaneously
It is not only limited to described embodiment.
Claims (9)
1. sand-catching apparatus on a kind of sucker rod pump pump, it is characterised in that sand-catching apparatus includes what is be vertically arranged on the sucker rod pump pump
Outer barrel and inner cylinder, the inner cylinder are set in the outer barrel and the storage sand space of annular, the storage are formed between the outer barrel
There is the slot for allowing liquid stream to pass through, the top of the inner cylinder is provided with the bottom end closure in sand space, the side wall of the inner cylinder
Allow the plunger of oil well pump by and can hold the elastic sealing element of sucker rod tightly, be provided with the outer barrel in hollow inversed taper platform shape
Guiding cup, it is described guiding cup be located at the inner cylinder above and be coaxially disposed with the inner cylinder, it is described guiding cup have can allow
The multiple through holes for allowing liquid stream to pass through are offered on the centre bore that the plunger passes through, the side wall of the guiding cup.
2. sand-catching apparatus on sucker rod pump pump as claimed in claim 1, it is characterised in that along described outer on the inwall of the outer barrel
The flange turned up is enclosed on the limited step for being circumferentially with a circle convex of cylinder, the top of the guiding cup provided with one, and the flange is consolidated
Surely it is overlapped on the limited step.
3. sand-catching apparatus on sucker rod pump pump as claimed in claim 2, it is characterised in that opened up on the side wall of the limited step
There is the bypass groove of a plurality of up/down perforation, the inwall of the bypass groove guides the outer wall of cup to enclose to form bypass stream with described
Road, a plurality of bypass flow channel being provided at circumferentially spaced along the outer barrel.
4. sand-catching apparatus on sucker rod pump pump as claimed in claim 2, it is characterised in that the outer barrel is included on tubular
Joint, outer barrel body and lower contact, the upper and lower ends of the outer barrel body are inserted into the top connection and the lower contact respectively
Interior, the limited step is arranged on the inwall of the top connection.
5. sand-catching apparatus on sucker rod pump pump as claimed in claim 4, it is characterised in that the lower contact inner wall surface thereof is described in
The installation step for being circumferentially with a circle convex of lower contact, the bottom of the inner cylinder is provided with end cap, and the end cap is cross section
For the column of annular, the internal face of the end cap is fixedly connected with the outside wall surface of the inner cylinder, the outside wall surface of the end cap and
The internal face of the lower contact is brought into close contact, and the bottom surface of the end cap is overlapped on the installation step.
6. sand-catching apparatus on the sucker rod pump pump as described in any one in claim 1 to 5, it is characterised in that the elasticity is close
Sealing is leather cup, and the leather cup is hollow cone table, the bottom of the leather cup be set in the top of the inner cylinder and with it is described
Inner cylinder is tightly connected, and the top of the leather cup offers the center through hole for allowing the plunger to pass through.
7. sand-catching apparatus on the sucker rod pump pump as described in any one in claim 1 to 5, it is characterised in that the inner cylinder bag
Include and offer a plurality of slot on the central tube and screen casing of sequential series connection from top to bottom, the screen casing.
8. sand-catching apparatus on sucker rod pump pump as claimed in claim 7, it is characterised in that between the outer barrel and the inner cylinder also
Provided with centralizer, the centralizer is set on the outer wall of the central tube.
9. sand-catching apparatus on sucker rod pump pump as claimed in claim 8, it is characterised in that the centralizer is semielliptic spring righting
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720038795.4U CN206458588U (en) | 2017-01-13 | 2017-01-13 | Sand-catching apparatus on sucker rod pump pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720038795.4U CN206458588U (en) | 2017-01-13 | 2017-01-13 | Sand-catching apparatus on sucker rod pump pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458588U true CN206458588U (en) | 2017-09-01 |
Family
ID=59698802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720038795.4U Active CN206458588U (en) | 2017-01-13 | 2017-01-13 | Sand-catching apparatus on sucker rod pump pump |
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| Country | Link |
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| CN (1) | CN206458588U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547592A (en) * | 2018-02-26 | 2018-09-18 | 中国石油天然气股份有限公司 | Check valve and electric motor drive oil pump system tubing string |
| CN113027737A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气股份有限公司 | Oil pumping well plunger pump |
| WO2023019182A1 (en) * | 2021-08-10 | 2023-02-16 | Snyder Daniel J | Sand collector for sucker rod pump |
-
2017
- 2017-01-13 CN CN201720038795.4U patent/CN206458588U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547592A (en) * | 2018-02-26 | 2018-09-18 | 中国石油天然气股份有限公司 | Check valve and electric motor drive oil pump system tubing string |
| CN108547592B (en) * | 2018-02-26 | 2020-09-08 | 中国石油天然气股份有限公司 | One-way valve and electric pump oil production pipe column |
| CN113027737A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气股份有限公司 | Oil pumping well plunger pump |
| CN113027737B (en) * | 2019-12-25 | 2023-04-07 | 中国石油天然气股份有限公司 | Oil pumping well plunger pump |
| WO2023019182A1 (en) * | 2021-08-10 | 2023-02-16 | Snyder Daniel J | Sand collector for sucker rod pump |
| US11852003B2 (en) | 2021-08-10 | 2023-12-26 | Daniel J. Snyder | Sand collector for sucker rod pump |
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