CN204402420U - A kind of compression pilot sand-blast packer - Google Patents
A kind of compression pilot sand-blast packer Download PDFInfo
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- CN204402420U CN204402420U CN201520027129.1U CN201520027129U CN204402420U CN 204402420 U CN204402420 U CN 204402420U CN 201520027129 U CN201520027129 U CN 201520027129U CN 204402420 U CN204402420 U CN 204402420U
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- packing element
- central tube
- sandblasting body
- ring
- piston bush
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Abstract
The utility model discloses a kind of compression pilot sand-blast packer, it is characterized in that it comprises top connection, filter screen, throttling muzzle, sandblasting body, sliding sleeve, adjustable ring, central tube, integral loop, upper packing element, middle packing element, spacer ring, lower rubber cylinder, piston bush, anticollision ring, lower contact, described top connection is connected with sandblasting body by anti-turn screw, described sliding sleeve is connected by cutting off pin with sandblasting body, described central tube upper end is provided with screw thread and is connected with sandblasting body, central tube lower end is provided with screw thread and is connected with lower contact, central tube is provided with adjustable ring from top to down successively, integral loop, upper packing element, middle packing element, spacer ring, lower rubber cylinder, piston bush, described piston bush is connected by fixing pin with lower contact, avoid packing element setting in advance in advance.The utility model is mainly used in oil recovery gas production staged fracturing technique, has that structure is simple, high-temperature-resistant high-pressure-resistant, an advantage such as safe and reliable.
Description
Technical field
The utility model relates to a kind of oil extraction in oil field gas production field fracturing tool used, particularly a kind of compression pilot sand-blast packer.
Background technology
Fracturing technology tubing string can be divided into fixed tubular column and upper lifting pipe post two kinds of modes.The downhole tool quantity that upper lifting pipe post needs is few, but needs shaft mouth operation, has the shortcoming that the activity duration is long, construction is complicated.The features such as along with the development of oil formation improvement, meticulous multiple fracturing demand progressively increases, and creates fixed tubular column multilayer staged fracturing technology tube pillar, and this tubing string has that structure is simple, easy construction, activity duration are short.
Based on expanding pilot sand-blast packer in the fixed tubular column multilayer staged fracturing technology tube pillar of current application, in view of the particular/special requirement of some wells, as deeply buried reservoir, temperature and pressure require high, expanding pilot sand-blast packer cannot meet on-the-spot demand.
Summary of the invention
For the problems referred to above, it is simple, safe and reliable that the purpose of this utility model is to provide a kind of structure, has compression pilot sand-blast packer that is high temperature resistant, high pressure resistant property, and greatly can improve the wear-corrosion resistance of sand-blast packer.
The concrete technical scheme of the utility model is as follows:
A kind of compression pilot sand-blast packer, comprise top connection, filter screen, throttling muzzle, sandblasting body, sliding sleeve, adjustable ring, central tube, integral loop, upper packing element, middle packing element, spacer ring, lower rubber cylinder, piston bush, anticollision ring, lower contact, described top connection is fixedly connected with by anti-rotation pin with sandblasting body, and described anti-rotation pin is anti-rotation structure; Described sliding sleeve and sandblasting body are fixed by cutting off pin; Described central tube upper end is provided with screw thread and is connected with sandblasting body, and lower end is provided with screw thread and is connected with lower contact; Described central tube is provided with adjustable ring, integral loop, upper packing element, middle packing element, spacer ring, lower rubber cylinder, piston bush from top to down successively, and described piston bush and lower contact are fixed by fixing pin, avoids packing element setting in advance in advance.
Described sandblasting body adopts circular hole to lead directly to flow-guiding channel.
Described central tube is provided with deflector.
Described integral loop, upper packing element, middle packing element, lower rubber cylinder are compression combining structure.
The utility model is mainly used in oil recovery gas production staged fracturing technique, has that structure is simple, high-temperature-resistant high-pressure-resistant, an advantage such as safe and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional view of the utility model central tube.
In figure, 1-top connection, 2-filter screen, 3-throttling muzzle, 4-sandblasting body, 5-anti-rotation pin, 6-sliding sleeve, 7-adjustable ring, 8-central tube, 9-integral loop, 10-upper packing element, 11-middle packing element, 12-spacer ring, 13-lower rubber cylinder, 14-piston bush, 15-anticollision ring, 16-lower contact, 17-fixing pin, 18-cut off pin, 801-deflector.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises pilot sandblasting part and packing seals two parts.Pilot sandblasting part comprises the parts such as filter screen 2, throttling muzzle 3, sandblasting body 4, sliding sleeve 6, and packing hermetic unit comprises the parts such as central tube 8, adjustable ring 7, integral loop 9, upper packing element 10, middle packing element 11, lower rubber cylinder 13, piston bush 14.Top connection 1 is fixedly connected with by anti-turn screw 5 with sandblasting body 4, and anti-turn screw 5 is designed to anti-rotation structure; Cut off pin 18 for fixing sliding sleeve 6 and sandblasting body 4, described sandblasting body 4 adopts circular hole to lead directly to flow-guiding channel; Central tube 8 upper end is provided with screw thread and is connected with sandblasting body 4, central tube 8 lower end is provided with screw thread and is connected with lower contact 16, central tube 8 is provided with from top to down successively adjustable ring 7, integral loop 9, on packing element 10, middle packing element 11, spacer ring 12, lower rubber cylinder 13, piston bush 14, fixing pin 17, for fixed piston cover 14 and lower contact 16, avoids packing element setting in advance in advance.Described integral loop 9, upper packing element 10, middle packing element 11, lower rubber cylinder 13 are compression combining structure.
As shown in Figure 2, described central tube 8 is designed with deflector 801.
At the scene in use procedure, the utility model is connected with oil pipe, under enter corresponding oil reservoir place.Pitching, to sliding sleeve, suppresses that pin is cut off, sliding sleeve moves down, and sand jet outlet is opened, and can carry out normal pressure break and add sand; Meanwhile, fracturing liquid enters lower piston chamber by sandblasting body pod apertures, central tube pod apertures, promotes piston to move, compresses packing element, makes packer setting.
Above-described embodiment only for technical conceive of the present utility model and feature are described, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the utility model Spirit Essence or modification, all should be encompassed in protection domain of the present utility model.
Claims (4)
1. a compression pilot sand-blast packer, is characterized in that it comprises top connection (1), filter screen (2), throttling muzzle (3), sandblasting body (4), sliding sleeve (6), adjustable ring (7), central tube (8), integral loop (9), upper packing element (10), middle packing element (11), spacer ring (12), lower rubber cylinder (13), piston bush (14), anticollision ring (15), lower contact (16), described top connection (1) is connected by anti-rotation pin (5) with sandblasting body (4), described sliding sleeve (6) is connected by cutting off pin (18) with sandblasting body (4), described central tube (8) upper end is provided with screw thread and is connected with sandblasting body (4), lower end is provided with screw thread and is connected with lower contact (16), and described central tube (8) is provided with adjustable ring (7) from top to down successively, integral loop (9), upper packing element (10), middle packing element (11), spacer ring (12), lower rubber cylinder (13), piston bush (14), described piston bush (14) is connected by fixing pin (17) with lower contact (16).
2. compression pilot sand-blast packer according to claim 1, is characterized in that described sandblasting body (4) adopts circular hole to lead directly to flow-guiding channel.
3. compression pilot sand-blast packer according to claim 1, is characterized in that described central tube (8) is provided with deflector (801).
4. compression pilot sand-blast packer according to claim 1, is characterized in that described integral loop (9), upper packing element (10), middle packing element (11), lower rubber cylinder (13) are compression combining structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520027129.1U CN204402420U (en) | 2015-01-15 | 2015-01-15 | A kind of compression pilot sand-blast packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520027129.1U CN204402420U (en) | 2015-01-15 | 2015-01-15 | A kind of compression pilot sand-blast packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402420U true CN204402420U (en) | 2015-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520027129.1U Active CN204402420U (en) | 2015-01-15 | 2015-01-15 | A kind of compression pilot sand-blast packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907127A (en) * | 2015-12-23 | 2017-06-30 | 中国石油天然气股份有限公司 | Cement retains tubing string and squeezing off instrument |
-
2015
- 2015-01-15 CN CN201520027129.1U patent/CN204402420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907127A (en) * | 2015-12-23 | 2017-06-30 | 中国石油天然气股份有限公司 | Cement retains tubing string and squeezing off instrument |
| CN106907127B (en) * | 2015-12-23 | 2019-05-03 | 中国石油天然气股份有限公司 | Cement retains tubing string and squeezing off tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Kong Lisheng Inventor after: Liu Shihao Inventor after: Yang Zeying Inventor before: Kong Lisheng Inventor before: Zhou Sihong Inventor before: Liu Shihao Inventor before: Yang Zeying |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191112 Address after: No.5, Juzhou Road, Dongying District, Dongying City, Shandong Province Co-patentee after: Qingdao Ruixin Petroleum Equipment Manufacturing Co., Ltd. Patentee after: Dongying Ruifeng Petroleum Development Co., Ltd. Address before: 266232, Shandong Province, Qingdao City, Jimo Province Blue Town Happy Road East first South Patentee before: Qingdao Ruixin Petroleum Equipment Manufacturing Co., Ltd. |
|
| TR01 | Transfer of patent right |