CN202596698U - Underground multistage voltage division switch device - Google Patents
Underground multistage voltage division switch device Download PDFInfo
- Publication number
- CN202596698U CN202596698U CN 201220177482 CN201220177482U CN202596698U CN 202596698 U CN202596698 U CN 202596698U CN 201220177482 CN201220177482 CN 201220177482 CN 201220177482 U CN201220177482 U CN 201220177482U CN 202596698 U CN202596698 U CN 202596698U
- Authority
- CN
- China
- Prior art keywords
- overcoat
- sliding sleeve
- sealing
- top connection
- partial pressure
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000006004 Quartz sand Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004576 sand Substances 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 1
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 1
- 241001330002 Bambuseae Species 0.000 abstract 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 1
- 239000011425 bamboo Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The utility model discloses a multistage partial pressure switching device in pit is designed for solving the problem that the success rate is low is opened to the multistage partial pressure measure operation in-process sliding sleeve in oil field, include promptly with top connection sealing connection's overcoat, with sliding sleeve core sealing connection's overcoat and club, sliding sleeve core up end and overcoat and top connection between the sealing washer of cooperation point department, sliding sleeve core and overcoat under the sealing washer of terminal surface cooperation point department and the sealing washer in the sealing groove of cone head formula club neck department etc.. This device can prevent that quartz sand from getting into and forming "sand bridge" between sliding sleeve core and the overcoat, still can keep sealed when guaranteeing that the sliding sleeve gets into the receiving section of thick bamboo, improves switch and opens success rate and security, is the ideal instrument that oil gas field development hyposmosis oil gas reservoir reforms transform and goes up the product.
Description
Technical field
The utility model relates to a kind of down-hole multilevel partial pressure switch device, belongs to oilfield exploitation fracturing technique field.
Background technology
At present; The underground work switching technique is main with technology such as pressure window, waterpower reversing switch, Piezoelectric switches, pitching sliding sleeves mainly; But, being mainly used in the pitching sleeve type switch of branch interval pressure break in these technology, the underground work success rate is not high; Can not adapt to the demand that the oil field divides interval to transform well, be unfavorable for reducing oil field measure operating cost.
Summary of the invention
The purpose of the utility model is to provide a kind of down-hole multilevel partial pressure switch device, and it can solve effectively, and sliding sleeve is opened into the low problem of power in the multistage dividing potential drop measure in the oil field operation process.
The concrete technology contents of the utility model is following:
The top connection lower thread connects overcoat, and the top connection bottom is provided with sealing ring with outer inner room, and is fixedly connected with overcoat by shear pin.Outer sleeve is provided with vertical groove and shear pin hole on one's body, and stack shell inner surface upper and lower end is respectively equipped with sealing ring.The sliding sleeve fuse is connected in the overcoat endoporus through shear pin, and its endoporus top is provided with chamfering, and the points of engagement place between its upper surface and overcoat and top connection is provided with sealing ring, its stack shell bottom outer surface be provided with sealing ring and with the sealing ring at points of engagement place, overcoat lower surface.Back taper hair style club is located at the interior Hole chamfering place of sliding sleeve fuse, and its back taper head neck place is provided with the seal groove that sealing ring is installed.
When the utility model uses, be lowered to pit shaft with the measure working string and treat the work layer position, after one deck group measure operation is accomplished down, drop into the club of corresponding specification and open last layer group job passage, fracturing fluid is pressed into the stratum through the passage of opening and accomplishes measures to reform.The club that drops into different size is opened the passage of different intervals; Reach one-trip string and realize the purpose of multi-section multi-layer pressure break, can reduce duty cycle, reduce the upkeep operation cost significantly; Be in the oilfield exploitation procedure, the ideal tools of hyposmosis reconstruction of oil and gas pools and last product.
" O " type circle sealing of the utility model through sliding sleeve fuse upper and lower end can prevent that quartz sand from getting into to form " sand bridge " between sliding sleeve fuse and the overcoat, guarantees that sliding sleeve gets into still can keep sealing when accepting tin.The tapered hard sealing surface of club and neck seal circle thereof can significantly improve the body sealing.Joint and partial pressure switch are integrated, can improve safety, solve the problem that multistage partial pressure switch can't effectively be opened, and guarantee success rate.
Description of drawings
Fig. 1 is a down-hole multilevel partial pressure switch apparatus structure sketch map.
Fig. 2 is the sealing state sketch map at sliding sleeve fuse, overcoat and top connection points of engagement place in the down-hole multilevel partial pressure switch device.
Fig. 3 is the sealing state sketch map at sliding sleeve fuse and points of engagement place, overcoat lower surface.
The specific embodiment
Embodiment:
Embodiment referring to figs. 1 through 3 pairs of the utility model further specifies:
Top connection 1 lower thread connects overcoat 6, and 6 in top connection 1 bottom and overcoat are provided with two seals circle 7, and are fixedly connected with overcoat 6 by shear pin 8.Overcoat 6 stack shells are provided with four vertical grooves and 4 shear pin holes, and stack shell inner surface upper and lower end is respectively equipped with two seals circle 5 and 11.Sliding sleeve fuse 10 is connected in overcoat 6 endoporus through shear pin 9; Its endoporus top is provided with chamfering; The points of engagement place that its upper surface and overcoat 6 and top connection are 1 is provided with sealing ring 3, its stack shell bottom outer surface be provided with " O " RunddichtringO 13 and with the sealing ring 12 at points of engagement place, overcoat 6 lower surface.Back taper hair style club 2 is located at the interior Hole chamfering place of sliding sleeve fuse 10, and its back taper head neck place is provided with the seal groove of installation " O " RunddichtringO 4.
Claims (1)
1. down-hole multilevel partial pressure switch device is characterized in that:
Top connection (1) lower thread connects overcoat (6), is provided with two seals circle (7) between top connection (1) bottom and overcoat (6), and is fixedly connected with overcoat (6) by shear pin (8); Overcoat (6) stack shell is provided with vertical groove and shear pin hole, and stack shell inner surface upper and lower end is respectively equipped with sealing ring (5) and (11); Sliding sleeve fuse (10) is connected in overcoat (6) endoporus through shear pin (9); Its endoporus top is provided with chamfering; Points of engagement place between its upper surface and overcoat (6) and top connection (1) is provided with sealing ring (3), its stack shell bottom outer surface be provided with " O " RunddichtringO (13) and with the sealing ring (12) at points of engagement place, overcoat (6) lower surface; Back taper hair style club (2) is located at the interior Hole chamfering place of sliding sleeve fuse (10), and its back taper head neck place is provided with the seal groove of installation " O " RunddichtringO (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220177482 CN202596698U (en) | 2012-04-24 | 2012-04-24 | Underground multistage voltage division switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220177482 CN202596698U (en) | 2012-04-24 | 2012-04-24 | Underground multistage voltage division switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596698U true CN202596698U (en) | 2012-12-12 |
Family
ID=47314245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220177482 Expired - Lifetime CN202596698U (en) | 2012-04-24 | 2012-04-24 | Underground multistage voltage division switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202596698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375147A (en) * | 2012-04-24 | 2013-10-30 | 中国石油天然气股份有限公司 | Underground multistage voltage division switch device |
-
2012
- 2012-04-24 CN CN 201220177482 patent/CN202596698U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375147A (en) * | 2012-04-24 | 2013-10-30 | 中国石油天然气股份有限公司 | Underground multistage voltage division switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: PetroChina Company Limited Address before: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee before: PetroChina Company Limited |