CN204436327U - Switching sliding sleeve - Google Patents
Switching sliding sleeve Download PDFInfo
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- CN204436327U CN204436327U CN201420812702.5U CN201420812702U CN204436327U CN 204436327 U CN204436327 U CN 204436327U CN 201420812702 U CN201420812702 U CN 201420812702U CN 204436327 U CN204436327 U CN 204436327U
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- sliding sleeve
- spool
- top connection
- sheath
- valve body
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Abstract
The utility model relates to oilfield drilling and production technology field, particularly relates to a kind of switching sliding sleeve, comprises top connection, sand control ring, liquid pass hole, valve body, spool return spring, sliding sleeve piston, spring, backwash passage, outage, sheath and spool; Described top connection is threaded with described valve body top, described top connection is provided with described liquid pass hole, the inner chamber of described top connection is communicated with exocoel by described liquid pass hole, is provided with described sand control ring in described liquid pass hole, is socketed with described spool return spring in the exocoel of described top connection; Described sliding sleeve upper piston area coordinates with described spool return spring, described sliding sleeve piston and described spool affixed, the outer cavity outer wall of sliding sleeve piston and spool and described top connection is slidably matched, and the bottom of described sliding sleeve piston is provided with described spring, and described sheath is provided with described outage.Needing the outside or inside of via seal cushion rubber in a high voltage state that sheath is set, for the protection of via hole cushion rubber in the effect of high flow rate liquid or gas without damage.
Description
Technical field
The utility model relates to oilfield drilling and production technology field, particularly relates to a kind of switching sliding sleeve.
Background technology
Oil well, in the work items such as acidifying, pressure break, discharge opeing, needs to set up oil jacket passage according to operation in good time on packer top, for operating tool string enter well put in place after anti-well killing fluid of arranging, the operation such as anti-flushing well after lifting hydraulic pump and pressure break, acidizing treatment.Therefore underground switch slide bushing is particularly important in the reliability of underground work.Its operating principle is: raise casing pressure, opened the spool being arranged on switching sliding sleeve inside, reach the object of oil jacket UNICOM by the mode setting up oil jacket pressure reduction.Used switching sliding sleeve spool produces displacement under the effect of the pressure, in the moment by oil jacket linked hole, sprue bushing pressure obtains suddenly discharging into oil pipe, and the O-ring seal be arranged on spool or on valve body, under the effect of high flow rate liquid, produce damaged mistake seal, produce the phenomenon maybe can not closed that is not closed completely, cause subsequent job to carry out.
Utility model content
The purpose of this utility model is the deficiency overcoming above-mentioned technology, and provides a kind of switching sliding sleeve, and this still can keep good sealing property after sliding over down-hole multiple switching, effectively solve O-ring seal in a high voltage state via hole damage problem.
The utility model for achieving the above object, by the following technical solutions: a kind of switching sliding sleeve, comprises top connection, sand control ring, liquid pass hole, valve body, spool return spring, sliding sleeve piston, spring, backwash passage, outage, sheath and spool; Described top connection is threaded with described valve body top, described top connection is provided with described liquid pass hole, the inner chamber of described top connection is communicated with exocoel by described liquid pass hole, is provided with described sand control ring in described liquid pass hole, is socketed with described spool return spring in the exocoel of described top connection; Described sliding sleeve upper piston area coordinates with described spool return spring, described sliding sleeve piston and described spool affixed, the outer cavity outer wall of sliding sleeve piston and spool and described top connection is slidably matched, the middle part of described valve body is provided with the first limited step for spacing described sliding sleeve piston, the bottom of described sliding sleeve piston is provided with described spring, described spring bottom coordinates with the described sheath be enclosed within described spool, described sheath is provided with described outage, the described backwash channel connection on described outage and described valve body; The bottom of described valve body is provided with the second limited step for spacing described sheath, and the inner circumference of described sheath is provided with concave station, and described concave station coordinates with the chuck on described spool outer shroud week.
The screen resilience of described spool return spring is greater than the screen resilience of spring.
The both sides of described sliding sleeve piston are respectively equipped with the first sealing ring; The second sealing ring is provided with between described top connection and valve body; The 3rd sealing ring is provided with between described spool and valve body.
The non-liquid matter such as the beneficial effects of the utility model are: be provided with sand control ring between liquid pass hole and sliding sleeve piston, sand setting entrained during for preventing oil pipe injection and discharging liquid enter sliding sleeve top land annular space, avoid the phenomenon that clamping stagnation causes switch bad.Needing the outside or inside of via seal cushion rubber in a high voltage state that sheath is set, for the protection of via hole cushion rubber in the effect of high flow rate liquid or gas without damage.Spool return spring is provided with on the top of sliding sleeve piston; spool is closed voluntarily after disappearing for casing pressure; be provided with spring and outage on the top of sheath, for promoting sheath descending protection via hole cushion rubber and discharging liquid storage, prevent sheath and spool from producing liquid when relative motion and hinder.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the view of spool cushion rubber of the present utility model when entering sheath;
Working state schematic representation when Fig. 3 is of the present utility model opening;
In figure: 1, top connection; 2, sand control ring; 3, liquid pass hole; 4, valve body; 5, spool return spring; 6, sliding sleeve piston; 7, spring; 8, backwash passage; 9, outage; 10, sheath; 11, spool; 12, inner chamber; 13, exocoel; 14, the first limited step; 15, the second limited step; 16, concave station; 17, chuck; 18, the first sealing ring; 19, the second sealing ring; 20, the 3rd sealing ring.
Detailed description of the invention
Detailed description of the invention of the present utility model is described in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in Figure 1, a kind of switching sliding sleeve, comprises top connection 1, sand control ring 2, liquid pass hole 3, valve body 4, spool return spring 5, sliding sleeve piston 6, spring 7, backwash passage 8, outage 9, sheath 10 and spool 11; Described top connection is threaded with described valve body top, described top connection is provided with described liquid pass hole, the inner chamber 12 of described top connection is communicated with exocoel 13 by described liquid pass hole, is provided with described sand control ring in described liquid pass hole, is socketed with described spool return spring 5 in the exocoel of described top connection; Described sliding sleeve piston 6 top coordinates with described spool return spring, described sliding sleeve piston 6 is affixed with described spool 11, the outer cavity outer wall of sliding sleeve piston and spool and described top connection is slidably matched, the middle part of described valve body is provided with the first limited step 14 for spacing described sliding sleeve piston, the bottom of described sliding sleeve piston is provided with described spring 7, described spring bottom coordinates with the described sheath 10 be enclosed within described spool, described sheath is provided with described outage 9, and described outage is communicated with the described backwash passage 8 on described valve body; The bottom of described valve body is provided with the second limited step 15 for spacing described sheath, and the inner circumference of described sheath is provided with concave station 16, and described concave station coordinates with the chuck 17 on described spool outer shroud week.The screen resilience of described spool return spring is greater than the screen resilience of spring.The both sides of described sliding sleeve piston are respectively equipped with the first sealing ring 18; The second sealing ring 19 is provided with between described top connection and valve body; The 3rd sealing ring 20 is provided with between described spool and valve body.
In underground work process, when needing switching sliding sleeve to open, raise casing pressure, the bottom of sliding sleeve piston 6 is acted on through backwash passage 8, retractor spool return spring 5 is pressed down up in the effect of high pressure, the liquid on its top enters in oil pipe by liquid pass hole 3 and sand control ring 2, spool 11 is up together under the drive of sliding sleeve piston 6, spool is in up process, sheath 10 keeps motionless under the effect of spring 7, between spool and sheath, liquid storage is discharged through outage 9, the O-ring seal be arranged on spool 11 enters the inside of sheath 10 smoothly, when the step of spool 11 outside is with when overlapping with the step on sheath 10, driven by spool that sheath is together up opens backwash passage 8, now because the O-ring seal on spool has entered in sheath, avoid the impact of highly pressurised liquid, effectively ensure that its integrality.When implementing oil pressure operation, sleeve pipe stops injecting anti-drain body, it is together descending that sliding sleeve piston promotes spool, sheath under the effect of spool return spring, obtain spacing after the lower surface of sheath 10 overlaps with the step on valve body, spring 7 is compressed under the effect of spool return spring, spool 11 then continues descending, O-ring seal is taken in sheath out of the pressure inserting valve body closedown backwash passage 8 oil pipe is applied to sliding sleeve piston 6 top annular space through sand control ring 2 and liquid pass hole 3.
Be provided with sand control ring between liquid pass hole and sliding sleeve piston, the non-liquid matter such as sand setting entrained during for preventing oil pipe injection and discharging liquid enter sliding sleeve top land annular space, avoid the phenomenon that clamping stagnation causes switch bad.Needing the outside or inside of via seal cushion rubber in a high voltage state that sheath is set, for the protection of via hole cushion rubber under the effect of high flow rate liquid or gas without damaging.Spool return spring is provided with on the top of sliding sleeve piston; spool is closed voluntarily after disappearing for casing pressure; be provided with spring and outage on the top of sheath, for promoting sheath descending protection via hole cushion rubber and discharging liquid storage, prevent sheath and spool from producing liquid when relative motion and hinder.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a switching sliding sleeve, is characterized in that: comprise top connection, sand control ring, liquid pass hole, valve body, spool return spring, sliding sleeve piston, spring, backwash passage, outage, sheath and spool; Described top connection is threaded with described valve body top, described top connection is provided with described liquid pass hole, the inner chamber of described top connection is communicated with exocoel by described liquid pass hole, is provided with described sand control ring in described liquid pass hole, is socketed with described spool return spring in the exocoel of described top connection; Described sliding sleeve upper piston area coordinates with described spool return spring, described sliding sleeve piston and described spool affixed, the outer cavity outer wall of sliding sleeve piston and spool and described top connection is slidably matched, the middle part of described valve body is provided with the first limited step for spacing described sliding sleeve piston, the bottom of described sliding sleeve piston is provided with described spring, described spring bottom coordinates with the described sheath be enclosed within described spool, described sheath is provided with described outage, the described backwash channel connection on described outage and described valve body; The bottom of described valve body is provided with the second limited step for spacing described sheath, and the inner circumference of described sheath is provided with concave station, and described concave station coordinates with the chuck on described spool outer shroud week.
2. switching sliding sleeve according to claim 1, is characterized in that: the screen resilience of described spool return spring is greater than the screen resilience of spring.
3. switching sliding sleeve according to claim 1, is characterized in that: the both sides of described sliding sleeve piston are respectively equipped with the first sealing ring; The second sealing ring is provided with between described top connection and valve body; The 3rd sealing ring is provided with between described spool and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420812702.5U CN204436327U (en) | 2014-12-18 | 2014-12-18 | Switching sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420812702.5U CN204436327U (en) | 2014-12-18 | 2014-12-18 | Switching sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436327U true CN204436327U (en) | 2015-07-01 |
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ID=53604205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420812702.5U Active CN204436327U (en) | 2014-12-18 | 2014-12-18 | Switching sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204436327U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909218A (en) * | 2016-05-31 | 2016-08-31 | 托普威尔石油技术股份公司 | Underground controllable spray gun |
| CN107542433A (en) * | 2017-08-24 | 2018-01-05 | 西安石油大学 | A kind of pressure sliding sleeve controls formula gas well continuous drainage gas production plunger |
| CN107558951A (en) * | 2017-09-29 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of hydraulic selector circulation slide sleeve |
-
2014
- 2014-12-18 CN CN201420812702.5U patent/CN204436327U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909218A (en) * | 2016-05-31 | 2016-08-31 | 托普威尔石油技术股份公司 | Underground controllable spray gun |
| CN105909218B (en) * | 2016-05-31 | 2018-11-30 | 托普威尔石油技术股份公司 | A kind of controllable spray gun in underground |
| CN107542433A (en) * | 2017-08-24 | 2018-01-05 | 西安石油大学 | A kind of pressure sliding sleeve controls formula gas well continuous drainage gas production plunger |
| CN107542433B (en) * | 2017-08-24 | 2022-06-21 | 西安石油大学 | Pressure sliding sleeve control type gas well continuous drainage gas production plunger |
| CN107558951A (en) * | 2017-09-29 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of hydraulic selector circulation slide sleeve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |