CN207437026U - Sand prevention structure for oil production pipe column and switch valve for sand prevention structure - Google Patents
Sand prevention structure for oil production pipe column and switch valve for sand prevention structure Download PDFInfo
- Publication number
- CN207437026U CN207437026U CN201720722782.9U CN201720722782U CN207437026U CN 207437026 U CN207437026 U CN 207437026U CN 201720722782 U CN201720722782 U CN 201720722782U CN 207437026 U CN207437026 U CN 207437026U
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- CN
- China
- Prior art keywords
- switch valve
- sand
- pipe
- valve
- sediment pipe
- Prior art date
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Links
- 239000004576 sand Substances 0.000 title claims abstract description 103
- 230000002265 prevention Effects 0.000 title 2
- 239000013049 sediment Substances 0.000 claims description 48
- 230000000903 blocking effect Effects 0.000 claims description 18
- 239000002195 soluble material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 14
- 239000010779 crude oil Substances 0.000 description 6
- 235000013312 flour Nutrition 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a sand control structure that oil production pipe, tubular column were used and ooff valve that sand control structure used, wherein oil production pipe includes: oil pipe, cover are established packer on the oil pipe, set up packer below and with screen pipe, setting that oil pipe connects are in sand setting pipe, setting below the screen pipe are in the ooff valve of sand setting pipe below, the sand setting pipe has the cavity that top-down link up, the ooff valve have with the cavity intercommunication of sand setting pipe and the cavity that top-down link up, so that the cavity of ooff valve can be held and is equipped with a plurality of soluble stifled pieces along vertical direction interval arrangement, the inner wall of ooff valve has inwards the protrusion that protrudes and is used for accepting soluble end cap. The utility model adopts the above structure have following advantage: the workover rig is not needed to be mounted, and workover operation construction is carried out; the operation is convenient, and the effective time can be manually controlled; the cost is low.
Description
Technical field
The utility model is related to oil/gas well down-hole oil production apparatus field more particularly to a kind of flow string, tubing string it is anti-
The switch valve of sand structure and sand control structure.
Background technology
Currently existing mechanical sand control generally hangs sand control pipe using underground.Fig. 1 shows well of the prior art
Lower suspension sand control pipe, this kind of sand control pipe include from bottom to up the sand sediment pipe 4 that silk plug 6, lower end blocked by silk plug 6, screen casing 3 with
And packer 2.This kind of sand control pipe is widely used in sand output well.
With the production of oil well, sand in stratum is flowed to crude oil in well, when underground crude oil runs into screen casing 3, sand quilt
Screen casing 3 obstructs, so as to which only crude oil is produced.
But containing substantial amounts of flour sand and silt etc. in crude oil, for these substances due to grain size very little, screen casing 3 is cannot to stop this
A little flour sands and silt.In oil well production, flour sand and silt can enter inside sand control pipe, so as to largely be deposited on sand sediment pipe 4
Bottom.After sand sediment pipe 4 is full by sedimentation, sand control pipe can cannot be produced by Severe blockage or even oil well.Unless into
Row lift pipe string job execution, otherwise the sand setting among sand sediment pipe 4 can not dispose.But construction operation is carried out, not only make
Industry is taken high, has an effect on normal production of hydrocarbons.
Utility model content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved by the utility model is to provide a kind of oil recoveries
The switch valve of tubing string, the sand control structure of tubing string and sand control structure, can remove the sand setting in the sand sediment pipe of underground.
The specific technical solution of the utility model is：A kind of flow string, including：Oil pipe is set on the oil pipe
Packer, be arranged on the screen casing being connected below the packer and with the oil pipe, the sand sediment pipe being arranged below the screen casing,
The switch valve being arranged below the sand sediment pipe, the sand sediment pipe have the chamber penetrated through from top to bottom, and the switch valve has
With the chamber of the sand sediment pipe and the cavity that penetrates through from top to bottom so that the cavity interior energy of the switch valve be installed with it is multiple
Vertically spaced soluble blocking piece, the inner wall of the switch valve have towards projecting inward and soluble stifled for accepting
The protruding portion of head.
Preferably, the lower end of the sand sediment pipe is socketed with the switch valve by screw thread.
Preferably, the sand sediment pipe is set in outside the switch valve.
Preferably, the protruding portion is arranged on the lower end of the switch valve.
Preferably, the protruding portion is tapered.
Preferably, the soluble blocking piece is made of oil-soluble material.
Preferably, the lower end of the switch valve has chamfering.
The embodiment of the present application discloses a kind of sand control structure of tubing string, including sand sediment pipe and switch valve, the sand sediment pipe
Lower end be connected with the upper end of the switch valve, the sand sediment pipe has the chamber that penetrates through from top to bottom, and the switch valve has
With the chamber of the sand sediment pipe and the cavity that penetrates through from top to bottom, the inner wall of the switch valve has towards projecting inward and be used for
Accept the protruding portion of soluble plug.
Preferably, the lower end of the sand sediment pipe is socketed with the switch valve by screw thread.
Preferably, the sand sediment pipe is set in outside the switch valve.
Preferably, the protruding portion is arranged on the lower end of the switch valve.
Preferably, the protruding portion is tapered.
The embodiment of the present application discloses a kind of switch valve of sand control structure, including valve body, the valve body have from upper and
The cavity of lower perforation, the internal face of the valve body have towards protruding portion projecting inward and for accepting soluble plug.
Preferably, the protruding portion is arranged on the lower end of the valve body.
Preferably, the lower end of the valve body has chamfering.
The utility model has using the above structure to be had the advantage that：
1st, workover rig is not required to, carries out workover operation construction；2nd, easy to operate, effective time able person is in order to control；3rd, cost
It is cheap.
Description of the drawings
Task of explanation is only used for attached drawing described here, and is not intended in any way limit disclosed in the utility model
Scope.In addition, shape and proportional sizes of each component in figure etc. are only schematical, the reason to the utility model is used to help
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 shows suspension sand control pipe in underground of the prior art；
Fig. 2 shows the flow string in the embodiment of the present application；
Fig. 3 shows the switch valve with soluble blocking piece in the sand control structure in the embodiment of the present application；
Fig. 4 shows the switch valve of the sand control structure in the embodiment of the present application；
Fig. 5 shows the structure diagram of the switch valve in Fig. 4.
The reference numeral of the figures above：1st, oil pipe；2nd, packer；3rd, screen casing；4th, sand sediment pipe；5th, switch valve；51st, cavity；
52nd, soluble blocking piece；53rd, protruding portion；54th, screw thread；55th, valve body；56th, clearance hole；57th, chamfering；6th, silk plug.
Specific embodiment
With reference to 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 the limitation to the utility model 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.
Fig. 2 shows 1 column of production pipe in the embodiment of the present application.With reference to shown in Fig. 2, the production pipe in the embodiment of the present application
1 column includes：Oil pipe 1, the packer 2 being set on the oil pipe 1 are arranged on 2 lower section of packer and connect with the oil pipe 1
The screen casing 3 connect, the switch valve 5 for being arranged on the sand sediment pipe 4 of 3 lower section of screen casing, being arranged on 4 lower section of sand sediment pipe are described heavy
Sandpipe 4 has the chamber that penetrates through from top to bottom, and the switch valve 5 has with the chamber of the sand sediment pipe 4 and from top to bottom
The cavity 51 of perforation, so that 51 interior energy of cavity of the switch valve 5 has been installed with multiple vertically spaced solubilities
Blocking piece 52, the inner wall of the switch valve 5 have towards protruding portion 53 projecting inward and for accepting soluble plug.
Specifically, oil pipe 1 extends from top to bottom.The packer 2 is set on the oil pipe 1, for its upside is empty
Between and lower side space mutually separate.The screen casing 3 is connected with the oil pipe 1, and the screen casing 3 is located under the packer 2
In the space of side.The screen casing 3 can play the role of certain sand control in oil recovery process.The lower part of the screen casing 3 and a sand sediment pipe 4
Connection.It is similar to tubing string of the prior art, containing substantial amounts of flour sand and silt etc. in crude oil, these substances due to grain size very
Small, screen casing 3 cannot stop these flour sands and silt.In oil well production, flour sand and silt etc. can enter inside sand control pipe, from
And enter sand sediment pipe 4.
The lower end of the sand sediment pipe 4 is socketed in by screw thread 54 outside the switch valve 5.The switch valve 5 have with it is described
The chamber of sand sediment pipe 4 and the cavity 51 penetrated through from top to bottom.The inner wall of the switch valve 5 has towards projecting inward and for holding
The protruding portion 53 of soluble plug is connect to form clearance hole 56.
With reference to shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, the protruding portion 53 of the switch valve 5 is located at described open
Close the lower end of valve 5.The protruding portion 53 is tapered.The diameter of clearance hole 56 can be 50mm.Correspondingly, soluble blocking piece 52
Spherical in shape before tripping in, the initial diameter of soluble blocking piece 52 is more than clearance hole 56 (being, for example, 60mm), and can be described prominent by this
The opening for going out the formation of portion 53 is blocked.Generally, soluble blocking piece 52 is made of oil-soluble material.For example, soluble blocking piece 52 can
To be made of thin iron sand (playing exacerbation) and adhesive and oil-soluble phenolic resin.With reference to shown in Fig. 4, when soluble blocking piece
52 are dissolved to its diameter less than after 50mm, and soluble blocking piece 52 is slid from clearance hole 56 to shaft bottom.Sand setting in 4 column of sand sediment pipe is opened
Row under beginning, until next soluble blocking piece 52 blocks clearance hole 56 again.
Soluble blocking piece 52 is put at regular intervals.The time that soluble blocking piece 52 is put into can be according to every mouth well
Silt content determines in crude oil.For example, if the silt content of this mouthful of well is more, regular unlatching valve body 55 is needed；It if should
The silt content of mouth well is few, then regular unlatching switch valve 5 is not required.
Therefore, 1 column of production pipe in the embodiment of the present application is not required to workover rig, carries out workover operation construction；It is easy to operate,
Effective time able person is in order to control；It is of low cost.Thus, it is possible to remove the sand setting inside sand sediment pipe 4, the activity duration is saved, is saved
Operating cost improves production efficiency.
With reference to shown in Fig. 2 and Fig. 4,1 column of production pipe in the application can be used for straight well or 4 column of sand sediment pipe is located at straight well section
Horizontal well.The operation principle of 1 column of production pipe in the application is substantially as follows：When sand control pipe is gone into the well, switch valve 5 is connected to
The bottom of sand sediment pipe 4, and soluble blocking piece 52 is put into switch valve 5；By in lower sand control pipe to well, tubing string is from bottom to up
For：Switch valve 5, sand sediment pipe 4, screen casing 3, packer 2；Oil well production for a period of time after, the bottom in the switch valve 5
Soluble blocking piece 52 be dissolved, the sand setting in sand sediment pipe 4 drains into artificial bottom of a well by clearance hole 56.It is now placed in described
In switch valve 5 the soluble fall of ball of bottom to sand sediment pipe 4 protruding portion 53, so as to seal switch valve 5.
The embodiment of the present application also discloses a kind of sand control structure of tubing string, described heavy including sand sediment pipe 4 and switch valve 5
The lower end of sandpipe is connected with the upper end of the switch valve 5, and the sand sediment pipe 4 has the chamber penetrated through from top to bottom, the switch
Valve 5 has the chamber with the sand sediment pipe 4 and the cavity 51 penetrated through from top to bottom, and the inner wall of the switch valve 5 has court
Protruding portion 53 projecting inward and for accepting soluble plug.Preferably, the lower end of the sand sediment pipe 4 and the switch valve 5 are logical
Screw thread 54 is crossed to be socketed.The sand sediment pipe 4 is set in outside the switch valve 5.The protruding portion 53 is arranged under the switch valve 5
End.The protruding portion 53 is tapered.
With reference to shown in Fig. 4 and Fig. 5, the embodiment of the present application discloses a kind of switch valve 5 of sand control structure, including valve body
55, the valve body 55 has the cavity 51 that penetrates through from top to bottom, and the internal face of the valve body 55 has towards projecting inward and for holding
Connect the protruding portion 53 of soluble plug.The protruding portion 53 is arranged on the lower end of the valve body 55.The lower end tool of the valve body 55
There is chamfering 57.
The switch valve 5 of sand control structure in the application and the structural principle of the sand control structure of tubing string are referred to
Description is stated, is not repeated herein.
Each embodiment in this specification is described by the way of progressive, the highlights of each of the examples are with
The difference of other embodiment, just to refer each other for identical similar part between each embodiment.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, can not the scope of protection of the utility model be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (15)
1. a kind of flow string, which is characterized in that including：Oil pipe, the packer being set on the oil pipe are arranged on the envelope
The screen casing that is connected below the device and with the oil pipe, the sand sediment pipe being arranged below the screen casing are arranged under the sand sediment pipe
The switch valve of side, the sand sediment pipe have the chamber penetrated through from top to bottom, and the switch valve has the chamber with the sand sediment pipe
Connection and the cavity that penetrates through from top to bottom, so that the cavity interior energy of the switch valve has been installed with and multiple has vertically been alternatively arranged
Soluble blocking piece, the inner wall of the switch valve has towards protruding portion projecting inward and for accepting soluble plug.
2. flow string as described in claim 1, which is characterized in that the lower end of the sand sediment pipe passes through spiral shell with the switch valve
Line is socketed.
3. flow string as described in claim 1, which is characterized in that the sand sediment pipe is set in outside the switch valve.
4. flow string as described in claim 1, which is characterized in that the protruding portion is arranged on the lower end of the switch valve.
5. flow string as described in claim 1, which is characterized in that the protruding portion is tapered.
6. flow string as described in claim 1, which is characterized in that the solubility blocking piece is made of oil-soluble material.
7. flow string as described in claim 1, which is characterized in that the lower end of the switch valve has chamfering.
8. a kind of sand control structure of tubing string, which is characterized in that including sand sediment pipe and switch valve, the lower end of the sand sediment pipe and institute
The upper end connection of switch valve is stated, the sand sediment pipe has the chamber penetrated through from top to bottom, and the switch valve has and the sand setting
The chamber of pipe and the cavity penetrated through from top to bottom, the inner wall of the switch valve have towards projecting inward and for accepting solubility
The protruding portion of plug.
9. the sand control structure of tubing string as claimed in claim 8, which is characterized in that the lower end of the sand sediment pipe and the switch
Valve is socketed by screw thread.
10. the sand control structure of tubing string as claimed in claim 8, which is characterized in that the sand sediment pipe is set in the switch
Outside valve.
11. the sand control structure of tubing string as claimed in claim 9, which is characterized in that the protruding portion is arranged on the switch
The lower end of valve.
12. the sand control structure of tubing string as claimed in claim 8, which is characterized in that the protruding portion is tapered.
13. a kind of switch valve of sand control structure, which is characterized in that including valve body, the valve body has what is penetrated through from top to bottom
Cavity, the internal face of the valve body have towards protruding portion projecting inward and for accepting soluble plug.
14. the switch valve of sand control structure as claimed in claim 13, which is characterized in that the protruding portion is arranged on the valve
The lower end of body.
15. the switch valve of sand control structure as claimed in claim 13, which is characterized in that the lower end of the valve body has
Angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720722782.9U CN207437026U (en) | 2017-06-21 | 2017-06-21 | Sand prevention structure for oil production pipe column and switch valve for sand prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720722782.9U CN207437026U (en) | 2017-06-21 | 2017-06-21 | Sand prevention structure for oil production pipe column and switch valve for sand prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437026U true CN207437026U (en) | 2018-06-01 |
Family
ID=62395151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720722782.9U Active CN207437026U (en) | 2017-06-21 | 2017-06-21 | Sand prevention structure for oil production pipe column and switch valve for sand prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287711A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Well completion pipe string and sand prevention pipe string thereof |
-
2017
- 2017-06-21 CN CN201720722782.9U patent/CN207437026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287711A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Well completion pipe string and sand prevention pipe string thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |