CN207092994U - 盲板式循环工具 - Google Patents
盲板式循环工具 Download PDFInfo
- Publication number
- CN207092994U CN207092994U CN201720874764.2U CN201720874764U CN207092994U CN 207092994 U CN207092994 U CN 207092994U CN 201720874764 U CN201720874764 U CN 201720874764U CN 207092994 U CN207092994 U CN 207092994U
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- CN
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- Prior art keywords
- blind plate
- circulating sub
- connector
- connecting tube
- lower contact
- 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.)
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- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 18
- 238000005406 washing Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720874764.2U CN207092994U (zh) | 2017-07-18 | 2017-07-18 | 盲板式循环工具 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201720874764.2U CN207092994U (zh) | 2017-07-18 | 2017-07-18 | 盲板式循环工具 |
Publications (1)
Publication Number | Publication Date |
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CN207092994U true CN207092994U (zh) | 2018-03-13 |
Family
ID=61545290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201720874764.2U Expired - Fee Related CN207092994U (zh) | 2017-07-18 | 2017-07-18 | 盲板式循环工具 |
Country Status (1)
Country | Link |
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CN (1) | CN207092994U (zh) |
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2017
- 2017-07-18 CN CN201720874764.2U patent/CN207092994U/zh not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20211108 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: China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd., No. 83, Second Street, economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 |
|
CF01 | Termination of patent right due to non-payment of annual fee |