CN203499990U - 钻井用高压回流管汇气控阀 - Google Patents
钻井用高压回流管汇气控阀 Download PDFInfo
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- CN203499990U CN203499990U CN201320522495.5U CN201320522495U CN203499990U CN 203499990 U CN203499990 U CN 203499990U CN 201320522495 U CN201320522495 U CN 201320522495U CN 203499990 U CN203499990 U CN 203499990U
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522495.5U CN203499990U (zh) | 2013-08-26 | 2013-08-26 | 钻井用高压回流管汇气控阀 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320522495.5U CN203499990U (zh) | 2013-08-26 | 2013-08-26 | 钻井用高压回流管汇气控阀 |
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| CN203499990U true CN203499990U (zh) | 2014-03-26 |
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| CN201320522495.5U Expired - Fee Related CN203499990U (zh) | 2013-08-26 | 2013-08-26 | 钻井用高压回流管汇气控阀 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972250A (zh) * | 2016-07-04 | 2016-09-28 | 中国石油集团渤海钻探工程有限公司 | 泥浆当量密度控制阀 |
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- 2013-08-26 CN CN201320522495.5U patent/CN203499990U/zh not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972250A (zh) * | 2016-07-04 | 2016-09-28 | 中国石油集团渤海钻探工程有限公司 | 泥浆当量密度控制阀 |
| CN105972250B (zh) * | 2016-07-04 | 2018-03-13 | 中国石油集团渤海钻探工程有限公司 | 泥浆当量密度控制阀 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160527 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling well three companies of Central Plains petroleum works Co., Ltd of China Petrochemical Industry Address before: 100728, No. 22 North Street, Chaoyang Gate, Beijing, Chaoyang District Patentee before: China Petrochemical Group Corp. Patentee before: Drilling well three companies of Central Plains petroleum works Co., Ltd of China Petrochemical Industry |
|
| 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: 20140326 Termination date: 20180826 |