CN202900168U - Hydraulic control casing scraper - Google Patents
Hydraulic control casing scraper Download PDFInfo
- Publication number
- CN202900168U CN202900168U CN 201220602763 CN201220602763U CN202900168U CN 202900168 U CN202900168 U CN 202900168U CN 201220602763 CN201220602763 CN 201220602763 CN 201220602763 U CN201220602763 U CN 201220602763U CN 202900168 U CN202900168 U CN 202900168U
- Authority
- CN
- China
- Prior art keywords
- scraper
- piston body
- hydraulic control
- wall
- sleeve
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000007790 scraping Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a hydraulic control casing scraper, which is designed for thoroughly solving the problem of blocking during the scraping operation of the inner wall of the casing, and the upper end and the lower end of a body are an upper joint and a lower joint for connecting an oil pipe; the body cylinder wall is nested with a piston body sealed by an outer peripheral surface sealing ring, and the piston body is uniformly distributed along the radial direction of the body cylinder wall and is uniformly staggered along the axial direction; the piston body is internally provided with an axial and T-shaped central guide rod, the outer end face of the piston body is connected with a scraper, and blades which are uniformly distributed in the radial direction are arranged on the scraper. In the operation is scraped to the intraductal wall of sleeve, the utility model discloses accessible oil pipe and oil jacket annular space are suppressed the flexible of control scraper, in the drifting, carry out the intraductal wall of sleeve and scrape in a flexible way to can effectively avoid meeting the card trouble because of the scraper that the sleeve pipe local deformation leads to.
Description
Technical field
The utility model relates to a kind of hydraulic control casing scraper, belongs to petroleum industry oil-water well underground work technical field.
Background technology
Before the various underground work that oil field development is carried out, for guaranteeing the normal production of oil-water well, often need to carry out scraping to the Casing Failure inwall and process, scrape paraffin removal, dirt, perforation burr and other operation indentation and foreign material, to guarantee that internal surface of sleeve pipe is clean, be convenient to carrying out smoothly of later stage underground work.Casing scraper is the special underwell tool of internal surface of sleeve pipe scraping, mainly adopts rubber scraper and spring supporting blade construction, this blade or knife plate often because of ageing of rubber and spring fault by locked.When the local appearance distortion of internal surface of sleeve pipe, scraper can be met card, affects normally carrying out of scraping and DH measure operation.Once adopted the method that combines with conventional scraping technology with the high-pressure spray pollution clean-up technology to eliminate the blocking phenomenon, but because the structure that still adopts knife plate or blade to be connected with spring, so, the chance card failure can't fundamentally be eliminated.
Summary of the invention
The purpose of this utility model is to provide a kind of hydraulic control casing scraper, and it can thoroughly eliminate the chance card problem of the scraping that causes because of internal surface of sleeve pipe local distortion.
Concrete technical scheme of the present utility model is as follows:
The body upper end of scraper is the top connection of connected pipes, and the lower end is the lower contact of connected pipes.Be nested with the piston body by the sealing of outer peripheral face sealing ring on the body barrel, piston body radially evenly distributes along the body barrel, evenly staggers vertically.Be provided with axial, T-shaped centre pilot bar in the piston body, the piston body outer face connects scraper, and scraper is provided with radially equally distributed blade.
The utility model can be suppressed the flexible of control scraper by oil pipe and oil jacket annular space in the internal surface of sleeve pipe scraping, in drifting, carry out neatly the internal surface of sleeve pipe scraping, thereby the scraper that can effectively avoid causing because of sleeve pipe local distortion is met card failure.
Description of drawings
Fig. 1 is hydraulic control casing scraper structural representation.
The specific embodiment
With reference to Fig. 1 embodiment of the present utility model is further specified:
Embodiment:
The course of work of the present utility model is as follows:
The hydraulic control casing scraper is by top connection 1 and lower contact 7 connected pipes, with working string G.I.H design attitude.By suppressing in the oil pipe, make piston body 4 drive scraper 5 and move to the internal surface of sleeve pipe direction along centre pilot bar 3.When piston body 4 inner bottom surface touched centre pilot bar 3 bar tail, motion stopped, at this moment, scraper 5 blade close contact internal surface of sleeve pipe, beginning is removed the foreign material such as wax, dirt and perforation burr of internal surface of sleeve pipe with the upper and lower motion of tubing string.When touching distortion place of internal surface of sleeve pipe, suppress by the oil jacket annular space, make piston body 4 drive scraper 5 and move to the direction away from internal surface of sleeve pipe along centre pilot bar 3, regain scraper 5 blades, realize the unfreezing function.
Claims (2)
1. hydraulic control casing scraper is characterized in that:
Body (6) upper end is the top connection (1) of connected pipes, and the lower end is the lower contact (7) of connected pipes; Be nested with the piston body (4) by outer peripheral face sealing ring (2) sealing on body (6) barrel, piston body (4) radially evenly distributes along body (6) barrel, evenly staggers vertically; Be provided with axial, T-shaped centre pilot bar (3) in the piston body (4), piston body (4) outer face connects scraper (5), and scraper (5) is provided with radially equally distributed blade.
2. hydraulic control casing scraper as claimed in claim 1 is characterized in that being nested with at body (6) barrel the piston body (4) of four tubulars; Scraper (5) is provided with radially equally distributed four groups of totally eight blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602763 CN202900168U (en) | 2012-11-15 | 2012-11-15 | Hydraulic control casing scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220602763 CN202900168U (en) | 2012-11-15 | 2012-11-15 | Hydraulic control casing scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900168U true CN202900168U (en) | 2013-04-24 |
Family
ID=48120851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220602763 Expired - Fee Related CN202900168U (en) | 2012-11-15 | 2012-11-15 | Hydraulic control casing scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900168U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295258A (en) * | 2014-10-08 | 2015-01-21 | 宝鸡瑞通石油装备有限公司 | Novel drifting-wall scraping integrated operating gauge cutter and operating pipe column |
| CN106761390A (en) * | 2015-11-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Pipe column |
| CN111894522A (en) * | 2020-07-28 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Damping hydraulic power type switchable rotary scraping sleeve milling tool |
-
2012
- 2012-11-15 CN CN 201220602763 patent/CN202900168U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295258A (en) * | 2014-10-08 | 2015-01-21 | 宝鸡瑞通石油装备有限公司 | Novel drifting-wall scraping integrated operating gauge cutter and operating pipe column |
| CN106761390A (en) * | 2015-11-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Pipe column |
| CN111894522A (en) * | 2020-07-28 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Damping hydraulic power type switchable rotary scraping sleeve milling 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20211115 |