CN202914051U - Gravel filling device - Google Patents
Gravel filling device Download PDFInfo
- Publication number
- CN202914051U CN202914051U CN201220515921.8U CN201220515921U CN202914051U CN 202914051 U CN202914051 U CN 202914051U CN 201220515921 U CN201220515921 U CN 201220515921U CN 202914051 U CN202914051 U CN 202914051U
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- CN
- China
- Prior art keywords
- sliding sleeve
- gravel
- switch body
- inner sliding
- pack assembly
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a gravel filling device which comprises a sliding sleeve switch body (21) and an inner sliding sleeve (22) arranged in the sliding sleeve switch body. The inner sliding sleeve (22) enables the sliding sleeve switch body to be divided into an upper cavity (211) and a lower cavity (212), wherein the upper cavity (211) and the lower cavity (212) are relatively independent and are not communicated with each other. Due to isolation effect of the inner sliding sleeve, gravels in the upper cavity cannot enter the lower cavity where a spring is located, thereby preventing the spring from being stuck by the gravels, and guaranteeing reset of the inner sliding groove.
Description
Technical field
The utility model relates to technical field of petroleum extraction, particularly a kind of gravel-pack assembly that uses in the oil exploitation process.
Background technology
Gravel pack is a sand control technique commonly used in the oil exploitation, it briefly is exactly the screen casing that is lowered to the certain specification model at the oil reservoir place, annular space outside screen casing and between the pit shaft fills up the gravel that granularity is fit to, and forms the barrier of a firm high infiltration to stop reservoir sand.
In gravel filling sand prevention process, pack gravel is important operation.The effect of gravel-pack assembly is the passage that provides gravel to enter annular space between screen casing and the pit shaft in gravel-packing process, at the complete rear closing passage of construction, gravel is enclosed in the annular space.The structure of present gravel-pack assembly has multiple, and wherein a kind of gravel-pack assembly commonly used comprises Inserting Tube and sliding sleeve switch.Under the closed condition, the inner sliding sleeve in the sliding sleeve switch can be with the eyelet sealing of sliding sleeve switch body, and the bottom of inner sliding sleeve is connected with spring.During opening, Inserting Tube promotes inner sliding sleeve and moves down, and spring is compressed, and inner sliding sleeve is abdicated eyelet, and load fluid carries gravel and enters the screen jacket annular space from the Inserting Tube outflow through eyelet.After gravel pack finishes, on carry Inserting Tube, inner sliding sleeve moves up under the effect of spring and closes eyelet.Because inner sliding sleeve is sealing not, the gravel of sometimes filling can be piled up at the spring place, block spring, construct complete after, inner sliding sleeve is difficult to reset, can't effective sealing screen jacket annular space, affect gravel filling effect.
The utility model content
Block the technical problem that inner sliding sleeve is difficult to reset behind the spring in order to solve prior art cobblestone, the utility model provides a kind of gravel-pack assembly, the inner sliding sleeve of this gravel-pack assembly can be fully isolated with the lower chamber at gravel and spring place, thereby avoided gravel to block spring, can guarantee gravel filling effect.
The utility model for the technical scheme that solves its technical problem employing is: a kind of gravel-pack assembly, comprise sliding sleeve switch body and the inner sliding sleeve that is arranged in the sliding sleeve switch body, the sliding sleeve switch body is the tubular of end sealing, being provided with in the Switch main body can be along the inner sliding sleeve of Switch main body axis direction slip, seal by inner sliding sleeve between upper cavity in the Switch main body and the lower chamber, be provided with spring in the lower chamber, one end of spring is connected with inner sliding sleeve, the other end of spring is connected with the blind end of sliding sleeve switch body, be provided with in the upper cavity for the Inserting Tube that in upper cavity, injects gravel, the sidewall of sliding sleeve switch body is provided with eyelet, and inner sliding sleeve can seal eyelet.
Gravel-pack assembly comprises sliding sleeve switch, sliding sleeve switch comprises sliding sleeve switch body and the inner sliding sleeve that is arranged in the sliding sleeve switch body, inner sliding sleeve can will be separated into up and down relatively independent and mutual disconnected upper cavity and lower chamber in the sliding sleeve switch body, because the buffer action of inner sliding sleeve, gravel in the upper cavity can not enter the lower chamber at spring place again, thereby avoided gravel to block spring, guaranteed that inner sliding sleeve resets.
Preferred inner sliding sleeve is the cylindrical shape of bottom sealing, and an end of spring is connected with the bottom of inner sliding sleeve.
The bottom of preferred inner sliding sleeve is provided with projection, and an end of projection and spring is pegged graft.
Be provided with sealing ring between preferred inner sliding sleeve and the sliding sleeve switch body.
The sidewall of preferred sliding sleeve switch body is provided with the filter bores that is communicated with lower chamber and sliding sleeve switch body exterior.
The surface of preferred filter bores is provided with screen pack.
Preferably between the openend and eyelet of sliding sleeve switch body, the inwall of sliding sleeve switch body arranges bossed annulus.
Preferred sliding sleeve switch body comprises upper socket, lower socket and the plug that connects successively from the top down, and eyelet is arranged at socket, and at the axis direction of sliding sleeve switch body, the length of lower socket is less than the length of eyelet to plug.
Preferred Inserting Tube is the tubular of top end opening bottom sealing, the bottom of Inserting Tube and inner sliding sleeve butt, Inserting Tube comprises stopper section, guide portion and injection unit successively from the top to the bottom, the internal diameter of the external diameter of guide portion and sliding sleeve switch body is complementary, the external diameter of injection unit is less than the external diameter of guide portion, and the sidewall of injection unit arranges a plurality of injection holes.
The openend of preferred sliding sleeve switch body is provided with wide diameter portion, and the external diameter of stopper section is greater than the external diameter of guide portion and less than the internal diameter of wide diameter portion.
The beneficial effects of the utility model are: because the buffer action of inner sliding sleeve, the gravel in the upper cavity can not enter the lower chamber at spring place again, thereby has avoided gravel to block spring, guarantees that inner sliding sleeve resets and gravel filling effect.
Description of drawings
Below in conjunction with accompanying drawing gravel-pack assembly described in the utility model is described in further detail.
Fig. 1 is the assembling drawing of gravel-pack assembly original state described in the utility model.
Fig. 2 is the sectional view of sliding sleeve switch.
Fig. 3 is the front view of inner sliding sleeve.
Fig. 4 is the schematic diagram of gravel-pack assembly duty described in the utility model.
1. Inserting Tubes wherein, 11. stopper sections, 12. guide portion, 13. injection units, 131. injection hole, 2. sliding sleeve switch, 21. sliding sleeve switch bodies, 211. upper cavities, 212. lower chamber, socket on 213., 214. times sockets, 215. wide diameter portions, 22. inner sliding sleeve, 221. projections, 222. sealing rings, 23. spring, 24. eyelets, 25. filter bores, 26. plug, 27. screen packs, the annulus of 28. projections.
The specific embodiment
Below in conjunction with accompanying drawing gravel-pack assembly described in the utility model is elaborated.A kind of gravel-pack assembly, comprise sliding sleeve switch body 21 and the inner sliding sleeve 22 that is arranged in the sliding sleeve switch body 21, sliding sleeve switch body 21 is the tubular of end sealing, being provided with in the Switch main body 21 can be along the inner sliding sleeve 22 of Switch main body 21 axis directions slip, seal by inner sliding sleeve 22 between upper cavity 211 in the Switch main body 21 and the lower chamber 212, be provided with spring 23 in the lower chamber 212, one end of spring 23 is connected with inner sliding sleeve 22, the other end of spring 23 is connected with the blind end of sliding sleeve switch body 21, be provided with in the upper cavity 211 for the Inserting Tube 1 to upper cavity 211 interior injection gravels, the sidewall of sliding sleeve switch body 21 is provided with eyelet 24, inner sliding sleeve 22 can be with eyelet 24 sealings, as shown in Figure 1.
Gravel-pack assembly comprises sliding sleeve switch 2, sliding sleeve switch 2 comprises sliding sleeve switch body 21 and the inner sliding sleeve 22 that is arranged in the sliding sleeve switch body, inner sliding sleeve 22 can will be separated into up and down relatively independent and mutual disconnected upper cavity 211 and lower chamber 212 in the sliding sleeve switch body, because the buffer action of inner sliding sleeve 22, gravel in the upper cavity 211 can not enter the lower chamber 212 at spring 23 places, gravel can not be contacted with spring 23, thereby avoided gravel to block spring 23, guarantee that inner sliding sleeve 22 is sliding sleeve switch body 21 interior can resetting smoothly, as shown in Figure 2.
For weight reduction, improve the sensitivity of inner sliding sleeve 22, inner sliding sleeve 22 is the cylindrical shape of bottom sealing, and an end of spring 23 is connected with the bottom of inner sliding sleeve 22, and when needs were closed eyelet 24, inner sliding sleeve 22 can reset rapidly under the effect of spring like this.
In order to guarantee that inner sliding sleeve 22 is fixedly connected with spring 23, the bottom of inner sliding sleeve 22 is provided with projection 221, and projection 221 is pegged graft with an end of spring 23, and design also has advantages of simple in structure, easy for installation like this.In addition, be provided with sealing ring 222 between inner sliding sleeve 22 and the sliding sleeve switch body 21, with between further assurance upper cavity 211 and the lower chamber 212 at the sealing effectiveness at inner sliding sleeve 22 places.
Because the sealing function of 22 pairs of lower chambers 212 of inner sliding sleeve, when inner sliding sleeve 22 need to move down, air pressure in the lower chamber 212 will raise, when inner sliding sleeve 22 need to move up, air pressure in the lower chamber 212 will reduce, and both of these case all can make inner sliding sleeve 22 move inconvenience because the air pressure in the lower chamber 212 is different with the external world to be difficult to reset.So the sidewall of sliding sleeve switch body 21 is provided with the filter bores 25 that is communicated with lower chamber 212 and sliding sleeve switch body 21 outsides.Filter bores 25 can guarantee lower chamber 212 and 21 outside connections of sliding sleeve switch body on the one hand, can also stop that on the other hand gravel is back in the lower chamber 212, guarantees that inner sliding sleeve 22 can reset smoothly.In order further to avoid gravel to be back in the lower chamber 212, the surface of filter bores 25 is provided with screen pack 27.
Between the openend and eyelet 24 of sliding sleeve switch body 21, the inwall of sliding sleeve switch body 21 arranges bossed annulus 28, the annulus 28 of projection can stop that inner sliding sleeve 22 moves to the openend of sliding sleeve switch body 21, during closed condition, make inner sliding sleeve 22 be fixed on a desired location in the sliding sleeve switch body 21, guarantee that inner sliding sleeve 22 can seal eyelet 24.
Sliding sleeve switch body 21 comprises upper socket 213, lower socket 214 and the plug 26 that connects successively from the top down, and eyelet 24 is arranged at socket 213, and at the axis direction of sliding sleeve switch body 21, the length of lower socket 214 is less than the length of eyelet 24 to plug 26.Upper socket 213, lower socket 214 and plug 26 3 parts that sliding sleeve switch body 21 is designed to connect successively from the top down can conveniently be installed, especially when inner sliding sleeve 22 went wrong, the length of lower socket 214 can also convenient for maintaining less than the length of lower chamber 212.In addition, for being threaded, filter bores 25 is arranged on the lower socket 214 between upper socket 213 and the lower socket 214, and screen pack 27 is welded on the external surface of lower socket 214.
Inserting Tube 1 is the tubular of top end opening bottom sealing, the bottom of Inserting Tube 1 and inner sliding sleeve 22 butts, Inserting Tube comprises stopper section 11, guide portion 12 and injection unit 13 successively from the top to the bottom, the internal diameter of the external diameter of guide portion 12 and sliding sleeve switch body 21 is complementary, the external diameter of injection unit 13 is less than the external diameter of guide portion 12, and the sidewall of injection unit 13 arranges a plurality of injection holes 131.The openend of sliding sleeve switch body 21 is provided with wide diameter portion 215, and the external diameter of stopper section 11 is greater than the external diameter of guide portion 12 and less than the internal diameter of wide diameter portion 215.Wide diameter portion 215 cooperatively interacts with stopper section 11, can stop that Inserting Tube 1 moves down, and the distance of avoiding Inserting Tube 1 to move down is long.Be provided with sealing ring between guide portion 12 and the sliding sleeve switch body 21, gravel can enter upper cavity 211 by injection hole 131 in Inserting Tube 1, the corresponding connection of inwall of guide portion 12 and sliding sleeve switch body 21, and the blind end of Inserting Tube 1 is that taper all has guide effect, as shown in Figure 3.
The below introduces the course of work of gravel-pack assembly described in the utility model:
The closed condition of this gravel-pack assembly as shown in Figure 1, the blind end of Inserting Tube 1 bottom and inner sliding sleeve 22 butts, the inner sliding sleeve 22 of sliding sleeve switch 2 are with eyelet 24 sealing, inner sliding sleeve 22 is supported by the spring 23 of its underpart.When this gravel-pack assembly need to be in opening, Inserting Tube 1 promotes inner sliding sleeve 22 downwards and moves down, and spring 23 is compressed, and eyelet 24 is got out of the way, load fluid carries gravel enters sliding sleeve switch 2 outsides through eyelet 24 from injection hole 131 outflows of Inserting Tube 1 screen jacket annular space, as shown in Figure 4.After gravel pack finishes, on carry Inserting Tube 1, inner sliding sleeve 22 moves up under spring 23 effects and again closes eyelet 24.Because the protection of inner sliding sleeve 22, filter bores 25 and screen pack 27, gravel can not enter lower chamber 25, the problem that spring 23 is blocked in gravel buildup can not occur, guarantees to construct after the end, and inner sliding sleeve 22 resets under the effect of spring 23 smoothly, normal seal sieve cover annular space.
The above; only be specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or according to equivalent variations and modification that the utility model scope of patent protection is done, all should still belong to the category that this patent is contained.
Claims (10)
1. gravel-pack assembly, it is characterized in that: comprise sliding sleeve switch body (21) and be arranged on inner sliding sleeve (22) in the sliding sleeve switch body (21), sliding sleeve switch body (21) is the tubular of end sealing, being provided with in the Switch main body (21) can be along the inner sliding sleeve (22) of Switch main body (21) axis direction slip, seal by inner sliding sleeve (22) between upper cavity (211) in the Switch main body (21) and the lower chamber (212), be provided with spring (23) in the lower chamber (212), one end of spring (23) is connected with inner sliding sleeve (22), the other end of spring (23) is connected with the blind end of sliding sleeve switch body (21), be provided with in the upper cavity (211) for the Inserting Tube (1) that in upper cavity (211), injects gravel, the sidewall of sliding sleeve switch body (21) is provided with eyelet (24), and inner sliding sleeve (22) can seal eyelet (24).
2. gravel-pack assembly according to claim 1 is characterized in that: inner sliding sleeve (22) is the cylindrical shape of bottom sealing, and an end of spring (23) is connected with the bottom of inner sliding sleeve (22).
3. gravel-pack assembly according to claim 1, it is characterized in that: the bottom of inner sliding sleeve (22) is provided with projection (221), and projection (221) is pegged graft with an end of spring (23).
4. gravel-pack assembly according to claim 1 is characterized in that: be provided with sealing ring (222) between inner sliding sleeve (22) and the sliding sleeve switch body (21).
5. gravel-pack assembly according to claim 1 is characterized in that: the sidewall of sliding sleeve switch body (21) is provided with the filter bores (25) that is communicated with lower chamber (212) and sliding sleeve switch body (21) outside.
6. gravel-pack assembly according to claim 5, it is characterized in that: the surface of filter bores (25) is provided with screen pack (27).
7. gravel-pack assembly according to claim 1, it is characterized in that: between the openend and eyelet (24) of sliding sleeve switch body (21), the inwall of sliding sleeve switch body (21) arranges bossed annulus (28).
8. gravel-pack assembly according to claim 1, it is characterized in that: sliding sleeve switch body (21) comprises upper socket (213), lower socket (214) and the plug (26) that connects successively from the top down, eyelet (24) is arranged at socket (213), axis direction in sliding sleeve switch body (21), the length of lower socket (214) is less than the length of eyelet (24) to plug (26).
9. gravel-pack assembly according to claim 1, it is characterized in that: Inserting Tube (1) is the tubular of top end opening bottom sealing, the bottom of Inserting Tube (1) and inner sliding sleeve (22) butt, Inserting Tube comprises stopper section (11) successively from the top to the bottom, guide portion (12) and injection unit (13), the internal diameter of the external diameter of guide portion (12) and sliding sleeve switch body (21) is complementary, the external diameter of injection unit (13) is less than the external diameter of guide portion (12), and the sidewall of injection unit (13) arranges a plurality of injection holes (131).
10. gravel-pack assembly according to claim 9, it is characterized in that: the openend of sliding sleeve switch body (21) is provided with wide diameter portion (215), and the external diameter of stopper section (11) is greater than the external diameter of guide portion (12) and less than the internal diameter of wide diameter portion (215).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220515921.8U CN202914051U (en) | 2012-10-09 | 2012-10-09 | Gravel filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220515921.8U CN202914051U (en) | 2012-10-09 | 2012-10-09 | Gravel filling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914051U true CN202914051U (en) | 2013-05-01 |
Family
ID=48162372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220515921.8U Expired - Fee Related CN202914051U (en) | 2012-10-09 | 2012-10-09 | Gravel filling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375150A (en) * | 2013-08-08 | 2013-10-30 | 中国石油集团渤海钻探工程有限公司 | Horizontal well gravel packing tool |
| CN112360402A (en) * | 2021-01-12 | 2021-02-12 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
-
2012
- 2012-10-09 CN CN201220515921.8U patent/CN202914051U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375150A (en) * | 2013-08-08 | 2013-10-30 | 中国石油集团渤海钻探工程有限公司 | Horizontal well gravel packing tool |
| CN112360402A (en) * | 2021-01-12 | 2021-02-12 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
| CN112360402B (en) * | 2021-01-12 | 2021-04-27 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20211009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |