CN204002700U - Oil gas well cementing operation pressure reduction sliding sleeve - Google Patents
Oil gas well cementing operation pressure reduction sliding sleeve Download PDFInfo
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- CN204002700U CN204002700U CN201420479812.4U CN201420479812U CN204002700U CN 204002700 U CN204002700 U CN 204002700U CN 201420479812 U CN201420479812 U CN 201420479812U CN 204002700 U CN204002700 U CN 204002700U
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- central tube
- lower body
- sliding sleeve
- upper body
- pressure reduction
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Abstract
The utility model discloses a kind of oil gas well cementing operation pressure reduction sliding sleeve, comprise upper body, lower body and central tube, on upper body, be provided with multiple circulation ports, after the upper end of lower body is stretched in the lower end of upper body and coordinate between lower body to form and seal and be fixedly connected with, between central tube and upper body by two symmetrically arranged cut off fixing; The middle part of central tube forms an annular protrusion, between the inwall of annular protrusion and lower body, coordinate and form sealing, and leave a space between annular protrusion and the lower end of upper body, in lower body, be provided with two runners symmetrically, each runner is all cut off by a rupture disk and hydraulic cavities, the lower end of runner by plug seal, upper end extends to space and is communicated with; On the outer wall of central tube, be also provided with the first draw-in groove, in the first draw-in groove, be provided with jump ring, on the inwall of lower body, the below of central tube is provided with the second draw-in groove, the second draw-in groove coordinates with jump ring.Oil gas well cementing operation pressure reduction sliding sleeve reliability in the utility model is higher.
Description
Technical field
The utility model relates to Oil/gas Well apparatus field, in particular to a kind of oil gas well cementing operation pressure reduction sliding sleeve.
Background technology
At present, the pressure reduction sliding sleeve of the technical use of Oil/gas Well staged fracturing of horizontal well is by the upper and lower sectional area difference of the movable sleeve in sliding sleeve mostly, produces pressure reduction, makes movable sleeve descending, thereby opens sliding sleeve.Although this sliding sleeve is simple in structure, easy to operate, apply also more extensively,, may cause and open sliding sleeve and open in advance owing to there is pressure oscillation in well cementing operation process, affect cementing quality, reliability is intersected.
Utility model content
Technical problem to be solved in the utility model is, the oil gas well cementing operation pressure reduction sliding sleeve that a kind of reliability is higher is provided.
Therefore, the technical solution of the utility model is as follows:
A kind of oil gas well cementing operation pressure reduction sliding sleeve, comprises upper body, lower body and central tube, is provided with multiple circulation ports on described upper body, wherein:
After the upper end of described lower body is stretched in the lower end of described upper body and coordinate between described lower body to form and seal and be fixedly connected with, described central tube be arranged in described upper body and described lower body and with the inwall of described upper body and the inwall of described lower body between coordinates to form and seals, form a hydraulic cavities in described upper body, described central tube and described lower body interior, between described central tube and described upper body by two symmetrically arranged cut off fixing;
The middle part of described central tube forms an annular protrusion, between described annular protrusion and the inwall of described lower body, coordinate and form sealing, and leave a space between described annular protrusion and the lower end of described upper body, in described lower body, be provided with two runners symmetrically, each runner is all cut off by a rupture disk and described hydraulic cavities, the lower end of described runner by plug seal, upper end extends to described space and is communicated with;
On the outer wall of described central tube, be also provided with the first draw-in groove, in described the first draw-in groove, be provided with jump ring, on the inwall of described lower body, the below of described central tube is provided with the second draw-in groove, described the second draw-in groove coordinates with described jump ring, after opening at described oil gas well cementing operation pressure reduction sliding sleeve, described lower body is positioned.
In this technical scheme, this pressure reduction sliding sleeve can coordinate oil gas well cementing operation pitching sliding sleeve and solid, completion pipe string, realize the object of staged fracturing, according to the needs of Specific construction design, determine that sliding sleeve enters that well location is put and opening pressure, then be lowered into projected depth with many groups pitching sliding sleeve and completion pipe string, and well cementation; Select to ensure well the pressure that sliding sleeve is opened by the specification of rupture disk, reliability is high, and without extra perforation, frictional resistance is little, operation pressure is low.
Further, on described central tube, described annular protrusion above be provided with symmetrically two through holes, when described central tube moves down after predeterminable range, described space is communicated with by described through hole with described hydraulic cavities.In this technical scheme, the rear through hole of central tube descending one end distance is communicated with space with hydraulic cavities, and liquid passes through runner, space and through hole hydraulic return chamber, thereby on the inwall of through hole, also produces downward pressure, can improve the speed that sliding sleeve is opened.
Wherein, between described upper body and described lower body, can be fixedly connected with by screw; In order to ensure better sealing effectiveness, can be on the outer wall at described central tube, described through hole below be provided with sealing ring, between described upper body and described central tube, the both sides of described circulation port are provided with sealing ring, between described annular protrusion and described lower body, are provided with sealing ring.
Brief description of the drawings
Fig. 1 is according to the structural representation of the oil gas well cementing operation pressure reduction sliding sleeve of the utility model embodiment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
As shown in Figure 1, according to the oil gas well cementing operation pressure reduction sliding sleeve of embodiment of the present utility model, comprise upper body 1, lower body 2 and central tube 3, on described upper body 1, be provided with multiple circulation ports 11, wherein:
After the upper end of described lower body 2 is stretched in the lower end of described upper body 1 and coordinate between described lower body 2 to form and seal and be fixedly connected with, described central tube 3 be arranged in described upper body 1 and described lower body 2 and with the inwall of described upper body 1 and the inwall of described lower body 2 between coordinates to form and seals, in described upper body 1, described central tube 3 and the inner hydraulic cavities 4 that form of described lower body 2, between described central tube 3 and described upper body 1, symmetrically arrangedly cut off 10 and fix by two;
The middle part of described central tube 3 forms an annular protrusion 31, between described annular protrusion 31 and the inwall of described lower body 2, coordinate and form sealing, and leave a space 7 between described annular protrusion 31 and the lower end of described upper body 1, in described lower body 2, be provided with two runners 21 symmetrically, each runner 21 is all cut off by a rupture disk 5 and described hydraulic cavities 4, the lower end of described runner 21 by plug 6 seal, upper end extends to described space 7 and is communicated with;
On the outer wall of described central tube 3, be also provided with the first draw-in groove, in described the first draw-in groove, be provided with jump ring 32, on the inwall of described lower body 2, the below of described central tube 3 is provided with the second draw-in groove 22, described the second draw-in groove 22 coordinates with described jump ring 32, after opening at described oil gas well cementing operation pressure reduction sliding sleeve, described lower body 2 is positioned.
In this technical scheme, it should be noted that, shown in Fig. 1 for ladder cuts open, runner 21 in lower body 2 for being symmetrical arranged, an and corresponding rupture disk 5 respectively, when pressing crack construction, build the pressure from well head, in the time that pressure reaches setting value, rupture disk 5 is broken up, liquid enters space 7 by runner 21, pressure on annular protrusion 31 is being pushed away to central tube 3 descending, thereby opening circulation port 11, sliding sleeve is opened, thereby central tube continues the lower jump ring 32 of exercising to be entered in the second draw-in groove 22 locked central tube 3, prevent that sliding sleeve from closing under external force again.This pressure reduction sliding sleeve can coordinate oil gas well cementing operation pitching sliding sleeve and solid, completion pipe string, realize the object of staged fracturing, according to the needs of Specific construction design, determine that sliding sleeve enters that well location is put and opening pressure, then be lowered into projected depth with many groups pitching sliding sleeve and completion pipe string, and well cementation; Select to ensure well the pressure that sliding sleeve is opened by the specification of rupture disk 5, reliability is high, and without extra perforation, frictional resistance is little, operation pressure is low.
Further, on described central tube 3, described annular protrusion 31 above be provided with symmetrically two through holes 33, when described central tube 3 moves down after predeterminable range, described space 7 is communicated with described hydraulic cavities 4.In this technical scheme, the rear through hole 33 of central tube 3 descending one end distance is communicated with space 7 with hydraulic cavities 4, liquid passes through runner 21, space 7 and through hole 33 hydraulic return chambeies 4, thereby on the inwall of through hole 33, also produces downward pressure, can improve the speed that sliding sleeve is opened.
Wherein, between described upper body 1 and described lower body 2, can be fixedly connected with by screw 9; In order to ensure better sealing effectiveness, can be on the outer wall at described central tube 3, described through hole 33 below be provided with sealing ring 8, between described upper body 1 and described central tube 3, the both sides of described circulation port 11 are provided with sealing ring 8, between described annular protrusion 31 and described lower body 2, are provided with sealing ring 8.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within this embodiment is included in scope of the present utility model.
Claims (5)
1. an oil gas well cementing operation pressure reduction sliding sleeve, it is characterized in that, comprise upper body (1), lower body (2) and central tube (3), on described upper body (1), be provided with multiple circulation ports (11), wherein:
After the upper end of described lower body (2) is stretched in the lower end of described upper body (1) and coordinate between described lower body (2) to form and seal and be fixedly connected with, described central tube (3) be arranged on described upper body (1) and described lower body (2) inner side and with the inwall of described upper body (1) and the inwall of described lower body (2) between coordinates to form and seals, in described upper body (1), the inner hydraulic cavities (4) that forms of described central tube (3) and described lower body (2), fixing by two symmetrically arranged cutting off (10) between described central tube (3) and described upper body (1),
The middle part of described central tube (3) forms an annular protrusion (31), between the inwall of described annular protrusion (31) and described lower body (2), coordinate and form sealing, and between the lower end of described annular protrusion (31) and described upper body (1), leave a space (7), in described lower body (2), be provided with two runners (21) symmetrically, each runner (21) is all cut off by a rupture disk (5) and described hydraulic cavities (4), the lower end of described runner (21) is by plug (6) sealing, upper end extends to described space (7) and is communicated with,
On the outer wall of described central tube (3), be also provided with the first draw-in groove, in described the first draw-in groove, be provided with jump ring (32), on the inwall of the lower body (2) of described central tube (3) below, be provided with the second draw-in groove (22), described the second draw-in groove (22) coordinates with described jump ring (32), after opening at described oil gas well cementing operation pressure reduction sliding sleeve, described lower body (2) is positioned.
2. oil gas well cementing operation pressure reduction sliding sleeve according to claim 1, it is characterized in that, on the central tube (3) of described annular protrusion (31) top, be provided with symmetrically two through holes (33), after described central tube (3) moves down predeterminable range, described space (7) are communicated with by described through hole (33) with described hydraulic cavities (4).
3. oil gas well cementing operation pressure reduction sliding sleeve according to claim 2, is characterized in that, on the outer wall of the central tube (3) below described through hole (33), is provided with sealing ring (8).
4. according to the oil gas well cementing operation pressure reduction sliding sleeve described in any one in claims 1 to 3, it is characterized in that, between described upper body (1) and described lower body (2), be fixedly connected with by screw (9).
5. according to the oil gas well cementing operation pressure reduction sliding sleeve described in any one in claims 1 to 3, it is characterized in that, be positioned between the upper body (1) of described circulation port (11) both sides and described central tube (3) and be provided with sealing ring (8) between described annular protrusion (31) and described lower body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479812.4U CN204002700U (en) | 2014-08-23 | 2014-08-23 | Oil gas well cementing operation pressure reduction sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479812.4U CN204002700U (en) | 2014-08-23 | 2014-08-23 | Oil gas well cementing operation pressure reduction sliding sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN204002700U true CN204002700U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420479812.4U Active CN204002700U (en) | 2014-08-23 | 2014-08-23 | Oil gas well cementing operation pressure reduction sliding sleeve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089598A (en) * | 2015-08-18 | 2015-11-25 | 中国石油天然气股份有限公司 | Rupture starting sliding sleeve |
| CN108104769A (en) * | 2018-02-02 | 2018-06-01 | 西南石油大学 | A kind of explosion chip fracturing control valve |
| CN109353898A (en) * | 2018-11-29 | 2019-02-19 | 广州里工实业有限公司 | Fast disassembly type spline air-expanding shaft |
| CN113323626A (en) * | 2020-02-28 | 2021-08-31 | 中国石油化工股份有限公司 | Differential pressure sliding sleeve and oil-gas well fracturing construction method |
-
2014
- 2014-08-23 CN CN201420479812.4U patent/CN204002700U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089598A (en) * | 2015-08-18 | 2015-11-25 | 中国石油天然气股份有限公司 | Rupture starting sliding sleeve |
| CN105089598B (en) * | 2015-08-18 | 2018-04-03 | 中国石油天然气股份有限公司 | A kind of explosion starts sliding sleeve |
| CN108104769A (en) * | 2018-02-02 | 2018-06-01 | 西南石油大学 | A kind of explosion chip fracturing control valve |
| CN109353898A (en) * | 2018-11-29 | 2019-02-19 | 广州里工实业有限公司 | Fast disassembly type spline air-expanding shaft |
| CN113323626A (en) * | 2020-02-28 | 2021-08-31 | 中国石油化工股份有限公司 | Differential pressure sliding sleeve and oil-gas well fracturing construction method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210120 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |