CN207934871U - Sand-catching apparatus and tubing string - Google Patents
Sand-catching apparatus and tubing string Download PDFInfo
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- CN207934871U CN207934871U CN201820230341.1U CN201820230341U CN207934871U CN 207934871 U CN207934871 U CN 207934871U CN 201820230341 U CN201820230341 U CN 201820230341U CN 207934871 U CN207934871 U CN 207934871U
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Abstract
The utility model discloses a kind of sand-catching apparatus and tubing strings, are related to rod-pumped well sand control technique field, and the sand-catching apparatus includes：Top connection, screen casing and remove sandpipe, it is described except sandpipe is threaded through in the screen casing, the top connection is connected with the screen casing and the upper end except sandpipe respectively, the screen casing or described remove have threaded portion on sandpipe, the threaded portion makes the screen casing and described except helical flow path is formed between sandpipe, and the helical flow path is connected with the inside except sandpipe.The application can sink the grains of sand, prevent the grains of sand from flowing upwardly into oil well pump.
Description
Technical field
The utility model is related to rod-pumped well sand control technique field, more particularly to a kind of sand-catching apparatus and tubing string.
Background technology
The main reason for sand production is one of oil field development urgent need to solve the problem, sand production usually oil reservoir
Caused by loose cementing sandstone.In addition, in mid-late oilfield development, since long-term injecting water or gas injecting mining also can be great
Reservoir skeleton is destroyed, thus causes sand production.
Sand production can cause rod-pumped well certain harm, and two sides are mainly manifested in the harm of rod-pumped well
Face：1, the sand grains of high-speed motion enters pump barrel with production fluid, to damage the valve seat and valve ball of oil well pump, oil well pump is caused to leak
It loses；2, sand grains enters between pump barrel and oil pump plunger piston, so as to cause oil well pump holddown.Therefore, sand production substantially reduces
The efficient production period of rod-pumped well oil well pump and the pump detection period of oil well, to cause oil well output to subtract greatly, operating cost increases sharply,
Economic loss is serious.Presently, it pumps and is mainly obstructed using sand control screen in lower mechanical sand control, but since sand grains grain size is big
Small different, the sand grains that sand control screen cannot effectively prevent grain size smaller enters pump barrel.Therefore, there is an urgent need for a kind of new devices to be used for
It solves the above problems.
Utility model content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide for the utility model embodiment
A kind of sand-catching apparatus and tubing string, the grains of sand can be sunk, prevent the grains of sand from flowing upwardly into oil well pump.
The specific technical solution of the utility model embodiment is：
A kind of sand-catching apparatus, the sand-catching apparatus include：Top connection, screen casing and remove sandpipe, it is described except sandpipe is threaded through institute
It states in screen casing, the top connection is connected with the screen casing and the upper end except sandpipe respectively, the screen casing or the desanding
There is threaded portion, the threaded portion makes the screen casing and described except forming helical flow path, the spiral flow between sandpipe on pipe
Road is connected with the inside except sandpipe.
In a preferred embodiment, described except having threaded portion on sandpipe, the outside of the threaded portion with it is described
The inner wall of screen casing offsets, to form the helical flow path.
In a preferred embodiment, there is threaded portion, the inside of the threaded portion is removed with described on the screen casing
The inner wall of sandpipe offsets, to form the helical flow path.
In a preferred embodiment, there is opening, the helical flow path to be located at the opening on the screen casing
Lower section.
In a preferred embodiment, there is opening, the screw thread position is under the opening on the screen casing
Side.
In a preferred embodiment, the lower end except sandpipe is higher than the lower end of the screen casing.
In a preferred embodiment, the lower end of the top connection has external screw thread, and the upper end of the screen casing has
Internal thread, the external screw thread of the top connection are connected with the internal thread of the screen casing.
In a preferred embodiment, there is internal thread, the upper end except sandpipe to have for the lower end of the top connection
There are external screw thread, the internal thread of the top connection to be connected with the external screw thread except sandpipe.
In a preferred embodiment, described remove has annular space between sandpipe and the screen casing.
A kind of tubing string, the tubing string include：Sand-catching apparatus as described in any of the above-described；It is connected to the heavy of the screen casing lower end
Sand tail pipe；The oil well pump being connected to above the top connection.
The technical solution of the utility model has following notable advantageous effect：
During the work time, the crude oil with the grains of sand enters sieve to sand-catching apparatus in the application by the screen casing of sand-catching apparatus
Pipe and except the crude oil between sandpipe, then carrying the grains of sand enters screen casing and described except in the helical flow path formed between sandpipe, band
There is the crude oil of the grains of sand downward flow at high speed in helical flow path to leave spiral flow in the crude oil with the grains of sand to generate centrifugal force
When road, the larger solid particle of density, mechanical admixture etc. are thrown away downwards under gravitational and centrifugal forces in crude oil, Jin Erxiang
Under flow to except below sandpipe, and crude oil is except the lower end of sandpipe then by flowing into the inside except sandpipe, under the action of oil well pump
And it is plucked out of.The sand block of original common screen casing can be changed into sand setting by the sand-catching apparatus in the application, so as to effective
The grains of sand are reduced to enter in oil well pump by removing sandpipe, solve formation sand production cause oil well pump holddown or pump valve, pump barrel,
The problem of plunger wear, has achieved the purpose that extend the efficient production period of oil well pump and oil well pump detection period.
With reference to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies this practicality
Novel principle can be in a manner of adopted.It should be understood that the embodiment of the utility model in range not thus by
Limitation.In the range of the spirit and terms of appended claims, the embodiment of the utility model includes many changes, modifications
With it is equivalent.The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It is used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit in any way disclosed by the utility model
Range.In addition, the shape and proportional sizes etc. of each component in figure are only schematical, it is used to help the reason to the utility model
Solution is not the specific shape and proportional sizes for limiting each component of the utility model.Those skilled in the art is new in this practicality
Under the introduction of type, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.
Fig. 1 is the structural schematic diagram of sand-catching apparatus in the utility model embodiment.
The reference numeral of the figures above：
1, top connection；2, sandpipe is removed；3, screen casing；31, it is open；4, threaded portion；5, helical flow path；6, annular space.
Specific implementation mode
In conjunction with the description of attached drawing and specific embodiment of the present invention, the utility model can be clearly understood
Details.But specific embodiment of the present utility model described here, it is only used for explaining the purpose of this utility model, without
It can be understood as being limitations of the present invention in any way.Under the introduction of the utility model, technical staff is contemplated that
Arbitrary possible deformation based on the utility model, these are regarded as belonging to the scope of the utility model.It needs to illustrate
It is that when element is referred to as " being set to " another element, it can be directly on another element or there may also be placed in the middle
Element.When an element is considered as " connection " another element, it can be directly to another element or can
Centering elements can be existed simultaneously.Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or
Electrical connection, can also be the connection inside two elements, can be directly connected, can also indirectly connected through an intermediary,
For the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.Made herein
Term " vertical ", " horizontal ", "upper", "lower", "left", "right" and similar statement simply to illustrate that mesh
, it is not offered as being unique embodiment.Unless otherwise defined, all of technologies and scientific terms used here by the article and category
It is identical in the normally understood meaning of those skilled in the art of the application.Herein used in the description of the present application
Term be intended merely to description specific embodiment purpose, it is not intended that in limitation the application.Term as used herein
"and/or" includes any and all combinations of one or more relevant Listed Items.
In order to which the grains of sand sink, prevents the grains of sand from flowing upwardly into oil well pump, propose one kind in this application
Sand-catching apparatus, Fig. 1 is the structural schematic diagram of sand-catching apparatus in the utility model embodiment, as shown in Figure 1, the sand setting in the application
Device includes:Top connection 1, screen casing 3 and remove sandpipe 2, except sandpipe 2 is threaded through in screen casing 3, top connection 1 respectively with screen casing 3 and desanding
The upper end of pipe 2 is connected, screen casing 3 or except having threaded portion 4 on sandpipe 2, and threaded portion 4 is so that screen casing 3 and except being formed between sandpipe 2
Helical flow path 5, helical flow path 5 are connected with the inside except sandpipe 2.
During the work time, the crude oil with the grains of sand is entered sand-catching apparatus in the application by the screen casing 3 of sand-catching apparatus
Screen casing 3 and except the crude oil between sandpipe 2, then carrying the grains of sand enters screen casing 3 and except in the helical flow path 5 formed between sandpipe 2,
Crude oil with the grains of sand downward flow at high speed in helical flow path 5 leaves spiral shell to generate centrifugal force in the crude oil with the grains of sand
When eddy flow road 5, the larger solid particle of density, mechanical admixture etc. are thrown away downwards under gravitational and centrifugal forces in crude oil,
And then flow downward to except 2 lower section of sandpipe, and crude oil then removes the inside of sandpipe 2 by the lower end inflow except sandpipe 2, in oil well pump
Under the action of and be plucked out of.The sand block of original common screen casing 3 can be changed into sand setting by the sand-catching apparatus in the application, from
And the grains of sand can be effectively reduced and entered in oil well pump by removing sandpipe 2, solve formation sand production cause oil well pump holddown or
The problem of pump valve, pump barrel, plunger wear, has achieved the purpose that extend the efficient production period of oil well pump and oil well pump detection period.
In order to be better understood from the sand-catching apparatus in the application, it will be further explained and will be illustrated below.Such as
Shown in Fig. 1, except sandpipe 2 is threaded through in screen casing 3, so that removing has annular space 6 between sandpipe 2 and screen casing 3, outside screen casing 3
The crude oil with the grains of sand can be flowed into annular space 6 by screen casing 3, then flow downward in annular space 6 again.
As shown in Figure 1, screen casing 3 is connected with the upper end except sandpipe 2 by top connection 1.Specifically, under top connection 1
There is external screw thread, the upper end of screen casing 3 there is internal thread, the external screw thread of top connection 1 to be connected with the internal thread of screen casing 3 at end.On connect
First 1 lower end has internal thread, except the upper end of sandpipe 2 has external screw thread, the internal thread of top connection 1 and the external screw thread for removing sandpipe 2
It is connected.In other embodiments, screen casing 3 and the upper end except sandpipe 2 can also use other connection types and 1 phase of top connection
Connection.The upper end of top connection 1 can offer internal thread or external screw thread, to be connected with other components.
As shown in Figure 1, in one embodiment, except having threaded portion 4 on the outer wall of sandpipe 2, the outside of threaded portion 4 with
The inner wall of screen casing 3 offsets, to form helical flow path 5.There is opening 31, helical flow path 5 to be located at the lower section of opening 31 on screen casing 3.
Except the lower end of sandpipe 2 is higher than the lower end of screen casing 3.When the crude oil with the grains of sand flows into screen casing 3 to annular by the opening 31 of screen casing 3
In space 6, helical flow path 5 is then flowed downwardly into, the downward flow at high speed of crude oil with the grains of sand is to generate in helical flow path 5
Centrifugal force, when the crude oil with the grains of sand leaves helical flow path 5, density larger solid particle, mechanical admixture etc. exist in crude oil
It throws away downwards, and then is flowed downward to except 2 lower section of sandpipe is discharged or is received by other mechanisms under the action of centrifugal force and gravity
Collection, and crude oil is plucked out of then by flowing into the inside except sandpipe 2 except the lower end of sandpipe 2 under the action of oil well pump.Another
In kind embodiment, there is threaded portion 4, the inside of threaded portion 4 to offset with the inner wall except sandpipe 2 on the inner wall of screen casing 3, to be formed
Helical flow path 5.There is opening 31, helical flow path 5 to be located at the lower section of opening 31 on screen casing 3.Except the lower end of sandpipe 2 is higher than screen casing 3
Lower end.
It also proposed a kind of tubing string in this application, which includes：Such as sand-catching apparatus any among the above；It is connected to sieve
The sand setting tail pipe of 3 lower end of pipe；It is connected to the oil well pump of 1 top of top connection.Sand setting tail pipe is for the spiral shell in sand-catching apparatus
Grains of sand or mechanical admixture that eddy flow road 5 is thrown away etc..The tubing string is in mechanism, top connection 1 and the oil well pump of sand-catching apparatus
Cylinder is connected, and screen casing 3 is connected with sand setting tail pipe.According still further to sequence by the cylinder of oil well pump and oil well pump top oil pipe successively
Connection is down toward design position, then presses design requirement tripping in oil pump plunger piston and sucker rod successively, to realize rod-pumped well sand control.
Sand-catching apparatus and tubing string in the application have carried out construction application experiment on rod-pumped well, during the test the height of oil well pump
Effect production period extended to 167 days by original 78 days, and pump detection period also extended to 218 days by original 103 days.
Above-mentioned each embodiment in this specification is described in a progressive manner, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiment difference.It discloses
All articles and reference, including patent application and publication, are hereby incorporated by by quoting for various purposes.Description combination
Term " substantially by ... constitute " should include identified element, ingredient, component or step and essentially without influence should
Other elements, ingredient, component or the step of the basic novel feature of combination.It is described here using term "comprising" or " comprising "
Element, ingredient, component or step combination it is also contemplated that the implementation being made of substantially these elements, ingredient, component or step
Mode.Here by using term " can with ", it is intended to illustrate that described any attribute that " can with " includes all is optional.It is more
A element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Alternatively, single collection
Multiple element, ingredient, component or the step of separation can be divided at element, ingredient, component or step.For describe element,
The open "a" or "an" of ingredient, component or step is not said to exclude other elements, ingredient, component or step.
The foregoing is merely several embodiments of the utility model, although the embodiment disclosed by the utility model is such as
On, but the content is only to facilitate the embodiment for understanding the utility model and using, it is new to be not intended to limit this practicality
Type.Any those skilled in the art of the present invention are not departing from the spirit and scope disclosed by the utility model
Under the premise of, any modification and variation, but the patent of the utility model can be made in the formal and details of embodiment
Protection domain must be still subject to the scope defined in the appended claims.
Claims (10)
1. a kind of sand-catching apparatus, which is characterized in that the sand-catching apparatus includes：Top connection, screen casing and remove sandpipe, it is described remove sandpipe
Be threaded through in the screen casing, the top connection is connected with the screen casing and the upper end except sandpipe respectively, the screen casing or
It is described except having threaded portion on sandpipe, the threaded portion makes the screen casing and described except forming helical flow path between sandpipe, institute
Helical flow path is stated with the inside except sandpipe to be connected.
2. sand-catching apparatus according to claim 1, which is characterized in that described remove has threaded portion, the screw thread on sandpipe
The outside in portion and the inner wall of the screen casing offset, to form the helical flow path.
3. sand-catching apparatus according to claim 1, which is characterized in that have threaded portion, the threaded portion on the screen casing
Inside offset with the inner wall except sandpipe, to form the helical flow path.
4. sand-catching apparatus according to claim 2 or 3, which is characterized in that have opening, the spiral flow on the screen casing
Road is located at the lower section of the opening.
5. sand-catching apparatus according to claim 1, which is characterized in that have opening, the screw thread position on the screen casing
In the lower section of the opening.
6. sand-catching apparatus according to claim 1, which is characterized in that described except the lower end of sandpipe is higher than under the screen casing
End.
7. sand-catching apparatus according to claim 1, which is characterized in that the lower end of the top connection has external screw thread, described
There is internal thread, the external screw thread of the top connection to be connected with the internal thread of the screen casing for the upper end of screen casing.
8. sand-catching apparatus according to claim 1, which is characterized in that the lower end of the top connection has internal thread, described
Except there is external screw thread, the internal thread of the top connection to be connected with the external screw thread except sandpipe for the upper end of sandpipe.
9. sand-catching apparatus according to claim 1, which is characterized in that described annular except having between sandpipe and the screen casing
Space.
10. a kind of tubing string, which is characterized in that the tubing string includes：Sand-catching apparatus as described in any in claim 1 to 9；Even
It is connected on the sand setting tail pipe of the screen casing lower end；The oil well pump being connected to above the top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820230341.1U CN207934871U (en) | 2018-02-09 | 2018-02-09 | Sand-catching apparatus and tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820230341.1U CN207934871U (en) | 2018-02-09 | 2018-02-09 | Sand-catching apparatus and tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207934871U true CN207934871U (en) | 2018-10-02 |
Family
ID=63652354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820230341.1U Active CN207934871U (en) | 2018-02-09 | 2018-02-09 | Sand-catching apparatus and tubing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207934871U (en) |
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2018
- 2018-02-09 CN CN201820230341.1U patent/CN207934871U/en active Active
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