CN205955698U - Annotate grey sliding sleeve switch - Google Patents
Annotate grey sliding sleeve switch Download PDFInfo
- Publication number
- CN205955698U CN205955698U CN201620790219.0U CN201620790219U CN205955698U CN 205955698 U CN205955698 U CN 205955698U CN 201620790219 U CN201620790219 U CN 201620790219U CN 205955698 U CN205955698 U CN 205955698U
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- CN
- China
- Prior art keywords
- sliding sleeve
- overcoat
- inner sliding
- plug
- mortar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to an annotate grey sliding sleeve switch belongs to oil field oil extracting worker journey downhole tool technical field, comprises top connection, plug, sliding sleeve switch, and the sliding sleeve switch comprises overcoat and inner sliding sleeve, and both ends are connecting thread about the overcoat, and upper portion is connected with the top connection, and it has the feed liquor hole to open on the pipe wall of overcoat, and the feed liquor hole lower part inner chamber of overcoat is equipped with spacing circular bead, the top connection that inner sliding sleeve's external diameter is greater than and the internal diameter of the spacing circular bead of overcoat lower part inner chamber, it has the intercommunicating pore to open on inner sliding sleeve's the pipe wall, and inner sliding sleeve is fixed in the cavity of overcoat by the shear pin, and inner sliding sleeve's intercommunicating pore is located the upper portion in the feed liquor hole of overcoat. The utility model discloses a carry the mortar with the plug, target accurate replacement of mortar in place, replace the clear water and be detained by hemisphere face iron core plug the utility model discloses in the above oil pipe, it increases liquid column pressure to avoid the clear water to go into the well, makes the interior liquid column pressure stability of pit shaft, prevents that the following clear water of mortar from being inhaleed the oil reservoir, avoids the mortar to move down, realizes the accurate shutoff target zone of ash stopper.
Description
Technical field
The utility model is related to a kind of cement injecting sliding sleeve switch, belongs to technical field of tools under oil extraction in oil field engineering well, mainly should
Play plug for cement injecting when subnormal pressure stratum, pit shaft negative pressure.
Background technology
In oilfield process, interlayer adjustment needs cement injecting to beat plug closure bottom oil layer, and normal oil-water well cement injecting plays plug,
It is to beat cement injecting to enter certain depth under plug tubing string, with clear water by a certain amount of slurry delivery to design attitude, upper lifting pipe post is to setting
Meter red dog position, clear water anti-flushing well is consistent to importing and exporting water quality, then upper lifting pipe post, forms ash plug to mortar setting, reaches closure
The purpose of bottom oil layer.When strata pressure is less than head of liquid in pit shaft, reservoir plugging absorbs water, and in pit shaft, head of liquid causes
Part clear water is inhaled into reservoir plugging, makes pit shaft form negative pressure, when cement injecting plays plug, with clear water conveying mortar to depthkeeping pre- in well
Degree, clear water enters well, and head of liquid rises, and the following clear water of mortar is inhaled into oil reservoir, causes mortar to move down, and red dog can not accurately block
Target zone.
Content of the invention
The purpose of this utility model be overcome negative pressure well cement injecting beat plug clear water conveying mortar after, clear water head of liquid rise,
Part clear water below mortar is inhaled into oil reservoir, causes red dog to move down, and red dog can not accurately block the defect of target zone, provides one kind
Cement injecting sliding sleeve switch.
The utility model cement injecting sliding sleeve switch be employed technical scheme comprise that：
The utility model is made up of top connection, plug, sliding sleeve switch, and sliding sleeve switch is made up of overcoat and inner sliding sleeve, overcoat
Upper and lower ends are connection screw thread, and top is connected with top connection, the tube wall of overcoat has inlet opening, in the inlet opening bottom of overcoat
Chamber is provided with spacing shoulder；Top connection and the internal diameter of the spacing shoulder of overcoat lower lumen that the external diameter of inner sliding sleeve is more than, inner sliding sleeve
Intercommunicating pore is had on tube wall, inner sliding sleeve is fixed in the cavity of overcoat by shear pin, and the intercommunicating pore of inner sliding sleeve is located at entering of overcoat
The top of fluid apertures.
Plug is constituted for some groups of rubber plugs that hemisphere face iron core is set with.
Inner sliding sleeve upper end is the conical surface, forms good sealing with the hemisphere face of plug bottom.
Inner sliding sleeve intercommunicating pore upper and lower ends are provided with sealing ring with the faying face of overcoat.The beneficial effects of the utility model
It is to convey mortar with plug, mortar is accurately replaced and puts in place, replace clear water and the utility model is trapped in by hemisphere face iron core plug
In above oil pipe, it is to avoid clear water enters well increases head of liquid, keep head of liquid in pit shaft stable, it is to avoid part below mortar
Clear water is inhaled into oil reservoir, it is to avoid red dog moves down, and realizes ash plug and is accurately positioned, solves negative pressure well cement injecting and beat a plug difficult problem.
Brief description
Fig. 1：Structural representation of the present utility model.
Specific embodiment
With reference to the accompanying drawings and examples the utility model is further illustrated.
Referring to the drawings 1, the utility model cement injecting sliding sleeve switch is made up of top connection 1, plug 2, sliding sleeve switch, sliding sleeve switch
It is made up of overcoat 8 and inner sliding sleeve 5, overcoat 8 upper and lower ends are connection screw thread, and top is connected with top connection 1, on the tube wall of overcoat 8
Have inlet opening 7, inlet opening 7 lower lumen of overcoat 8 is provided with spacing shoulder 9；Top connection 1 He that the external diameter of inner sliding sleeve 5 is more than
The internal diameter of the spacing shoulder of overcoat 8 lower lumen 9, the tube wall of inner sliding sleeve 5 has intercommunicating pore 6, and inner sliding sleeve 5 is fixed on by shear pin 4
In the cavity of overcoat 8, and the intercommunicating pore 6 of inner sliding sleeve 5 is located at the top of the inlet opening 7 of overcoat 8.
Described plug 2 is constituted for some groups of rubber plugs that hemisphere face iron core is set with, and can be fitted in oil pipe 10 inwall, shape
Become excellent sealing.
Described inner sliding sleeve 5 upper end is the conical surface, forms good sealing with the hemisphere face of plug 2 bottom.
On the upper and lower ends of intercommunicating pore 6 of described inner sliding sleeve 5 and the faying face of overcoat 8, sealing ring 3, shear pin 4 are installed
Before not cutting off, inner sliding sleeve intercommunicating pore 6 and overcoat inlet opening 7 are in sealing not connected state.
The utility model passes through oil pipe 10 connection and goes into the well, and after injection mortar, puts into plug 2, clear water is defeated into cement injecting tubing string
Send promotion plug 2 descending, plug 2 replaces and promotes mortar descending, when plug 2 comes downwards to the position of inner sliding sleeve 5, plug 2 bottom
Hemisphere face seat, in inner sliding sleeve 5 upper end, cuts off shear pin 4 under pressure, the descending seat of inner sliding sleeve 5 at the interior shoulder 9 of overcoat 8,
The intercommunicating pore 6 of the inner sliding sleeve 5 that original place is sealed in sealing ring 3 is formed with the inlet opening 7 of overcoat 8 and connects, and sliding sleeve switch is with down tube
Oil jacket balance realized by post, and during lift pipe string, the mortar in the oil pipe of sliding sleeve switch bottom is trapped in downhole designs position, positioned at cunning
Clear water in set switch top oil pipe 10 is sealed in oil pipe by plug 2 to be taken out of outside pit shaft, makes head of liquid in pit shaft stable, prevents
Only the following clear water of mortar is inhaled into oil reservoir, it is to avoid mortar moves down, and realizes ash plug and accurately blocks target zone.
Claims (4)
1. a kind of cement injecting sliding sleeve switch, is made up of top connection (1), plug (2), sliding sleeve switch, and sliding sleeve switch is by overcoat (8) and interior
Sliding sleeve (5) is constituted, and it is characterized in that：Overcoat (8) upper and lower ends are connection screw thread, and top is connected with top connection (1), overcoat (8)
Inlet opening (7) is had on tube wall, inlet opening (7) lower lumen of overcoat (8) is provided with spacing shoulder (9)；The external diameter of inner sliding sleeve (5)
The top connection (1) being more than and the internal diameter of the spacing shoulder of overcoat (8) lower lumen (9), the tube wall of inner sliding sleeve (5) has intercommunicating pore
(6), inner sliding sleeve (5) is fixed in the cavity of overcoat (8) by shear pin (4), and the intercommunicating pore (6) of inner sliding sleeve (5) is located at overcoat (8)
Inlet opening (7) top.
2. a kind of cement injecting sliding sleeve switch according to claim 1, is characterized in that：Described plug (2) is hemisphere face iron core
Some groups of rubber plugs of suit are constituted.
3. a kind of cement injecting sliding sleeve switch according to claim 1 and 2, is characterized in that：Described inner sliding sleeve (5) upper end is cone
Face.
4. a kind of cement injecting sliding sleeve switch according to claim 2, is characterized in that：On described inner sliding sleeve (5) intercommunicating pore (6)
Lower two ends are provided with sealing ring (3) with the faying face of overcoat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620790219.0U CN205955698U (en) | 2016-07-25 | 2016-07-25 | Annotate grey sliding sleeve switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620790219.0U CN205955698U (en) | 2016-07-25 | 2016-07-25 | Annotate grey sliding sleeve switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205955698U true CN205955698U (en) | 2017-02-15 |
Family
ID=57971301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620790219.0U Active CN205955698U (en) | 2016-07-25 | 2016-07-25 | Annotate grey sliding sleeve switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205955698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494267A (en) * | 2020-03-18 | 2021-10-12 | 中国石油化工股份有限公司 | Oil-gas-water well leak-point plugging operation method |
-
2016
- 2016-07-25 CN CN201620790219.0U patent/CN205955698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494267A (en) * | 2020-03-18 | 2021-10-12 | 中国石油化工股份有限公司 | Oil-gas-water well leak-point plugging operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |