CN102235164A - Double-flow automatic measurement and regulation instrument for water injection well - Google Patents
Double-flow automatic measurement and regulation instrument for water injection well Download PDFInfo
- Publication number
- CN102235164A CN102235164A CN2010101536944A CN201010153694A CN102235164A CN 102235164 A CN102235164 A CN 102235164A CN 2010101536944 A CN2010101536944 A CN 2010101536944A CN 201010153694 A CN201010153694 A CN 201010153694A CN 102235164 A CN102235164 A CN 102235164A
- Authority
- CN
- China
- Prior art keywords
- water injection
- regulating arm
- flow
- automatic measurement
- water
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000002347 injection Methods 0.000 title claims abstract description 47
- 239000007924 injection Substances 0.000 title claims abstract description 47
- 238000005259 measurement Methods 0.000 title claims abstract description 37
- 210000002445 nipple Anatomy 0.000 claims abstract description 17
- 210000003746 feather Anatomy 0.000 claims abstract description 10
- 239000000523 sample Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 55
- 230000005540 biological transmission Effects 0.000 claims description 28
- 239000012530 fluid Substances 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 3
- 238000002604 ultrasonography Methods 0.000 abstract 2
- 238000009812 interlayer coupling reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a double-flow automatic measurement and regulation instrument for a water injection well, which has the advantages of precise water distribution and low cost and is convenient to operate. The double-flow automatic measurement and regulation instrument for a water injection well comprises an upper flow gauging nipple, a motor, a water injection device, a feather key and a lower flow gauging nipple, wherein the water injection device and the feather key are arranged on the same side of the double-flow automatic measurement and regulation instrument. In the double-flow automatic measurement and regulation instrument, an upper ultrasound flow inlet tube and a lower ultrasound flow inlet tube are adopted according to different user requirements to realize double-probe measurement; meanwhile, three values, namely total flow flowing into a working barrel of the current layer, flow injected into the current layer and total water injection rate flowing to a lower layer, can be simultaneously obtained. The double-flow automatic measurement and regulation instrument is especially suitable for adjusting water injection in complex well conditions with large interlayer coupling, efficiency is greatly improved, and precise water distribution can be truly realized. The double-flow automatic measurement and regulation instrument has the advantages of low cost and simple structure.
Description
Technical field
The invention belongs to field of petroleum exploitation, relate in particular to the automatic measurement and adjustment instrument of a kind of water injection well in oil fields double fluid amount.
Background technology
At present, what each elephant of China adopted when regulating eccentric injection allocation water injection well water injection rate is traditional adjusting technology, the eccentric injection allocation concocting method that uses is now: promptly can only be on ground according to the required water injection rate of each layer, water injection pressure, select for use a kind of blanking plug water nozzle of permanent opening to drop in the well by experience, and then the throwing flow meter, whether the water injection rate on measurement target stratum meets the water injection technology requirement; If do not reach requirement, then need salvage water nozzle changes, again change a different big or small blanking plug water nozzles inputs down-hole according to flow of measuring and empirical value, and then flow meter rendered to destination layer inspection, repeatable operation like this, make the destination layer water injection rate reach predetermined water injection rate, finish the allotment of this layer.General water injection well all is the multilayer water filling, must descend the allotment of one deck water injection rate after one deck water filling allotment is finished, and method also is to throw inspection more again through repeatable operation repeatedly as mentioned above, and repeated multiple times is time-consuming, require great effort, and is difficult to reach desirable requirement.The water yield of regulating individual layer needs about 6～8 hours (/ hectare sharp), and a bite well is by 4 layers of calculation, and adding the upslide instrument so and dragging for the time that the instrument time regulates a bite well is 5～8 days, and during working expenditure, effort, difficulty and intensity are all bigger.
Name is called " flow is surveyed automatically and transferred downhole instrument ", the patent No. is that the utility model patent of ZL 200820028647.5 discloses a kind of water injection well flow metering and adjusting apparatus, overcome to a great extent and surveyed the automatic coupling of transferring downhole instrument all can not realize regulating arm and down-hole water nozzle in the prior art, more do not use and survey the technological deficiency of transferring downhole instrument that the injection flow of down-hole water nozzle is regulated and control, but the disclosed water injection well flow metering and adjusting apparatus of this patent structurally uses a flow meter, cause so in use, can not draw the total flow that flows into this layer seating nipple, inject this laminar flow amount and three values of total water injection rate that flow to lower floor, can not realize accurate water distribution, this measurement and adjustment instrument uses two motors to drive regulating arm and power transmission shaft respectively simultaneously, complex structure, operation inconvenience.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in the background technology, the invention provides a kind of accurate water distribution, two flow metering and adjusting apparatus of popping one's head in of water injection well with low cost and that be convenient to operate realized.
Technical solution of the present invention is: the invention provides the automatic measurement and adjustment instrument of a kind of water injection well double fluid amount, its special character is: the automatic measurement and adjustment instrument of described water injection well double fluid amount is disposed with flow measurement pipe nipple, motor, water filling device, feather key and down-off and measures pipe nipple; Described motor-driven water filling device; Described water filling device and feather key are arranged at the two probe of water injection well flow metering and adjusting apparatus the same side.
Above-mentioned water filling device comprises regulating arm, drive link, first power transmission shaft, second power transmission shaft, regulating arm support spring, regulating arm base for supporting and water-filling nozzle; Described drive link links to each other with second power transmission shaft by first power transmission shaft; Described water-filling nozzle is arranged at the second power transmission shaft end, and described regulating arm base for supporting and motor flexibly connect; Described regulating arm one end is arranged on the regulating arm base for supporting, and other end inside is provided with water-filling nozzle, and described regulating arm below is provided with the regulating arm support spring; Described motor direct-drive drive link and regulating arm base for supporting.
Above-mentioned drive link links to each other with first power transmission shaft by last universal connector; Described first power transmission shaft passes through down, and joint coupling links to each other with second power transmission shaft.
Be concavo-convex the cooperation between above-mentioned regulating arm one end and the regulating arm base for supporting.
It is ultrasonic flowmeter that above-mentioned upward flow measurement pipe nipple and down-off are measured pipe nipple.
Advantage of the present invention is:
1, can realize accurate water distribution.The present invention can be according to the user's request difference, adopts two ultrasonic flow rate water inlet pipes up and down, can realize two probe measurements, and can draw the total flow that flows into this layer seating nipple simultaneously, injects this laminar flow amount and flow to three values of total water injection rate of lower floor.Especially be fit to the bigger complex hole condition of layer coupling is carried out water filling allotment work, not only efficient improves greatly, and can really realize accurate water distribution.
2, with low cost, simple in structure.The present invention has structurally done very big improvement, is using a motor simultaneously to regulating arm and shaft-driven while of transmission, and the water inlet measuring tube detachably designs, and brings very big convenience for the working service and the apparatus guarantee work in later stage.In addition as required,, only need pull down the lower end flow tube and get final product, need not to buy again single measurement and adjustment instrument device of organizing ultrasonic probe, reduce expenses if when wanting measurement and adjustment instrument device with single group ultrasonic probe.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a water filling device structural representation of the present invention.
The specific embodiment
Referring to Fig. 1, the invention provides the automatic measurement and adjustment instrument of a kind of water injection well double fluid amount, the automatic measurement and adjustment instrument of this water injection well double fluid amount is disposed with flow measurement pipe nipple 1, motor 2, water filling device, feather key 7 and down-off and measures pipe nipple 8; Motor 2 drives water filling device; Water filling device and feather key 7 are arranged at the two probe of water injection well flow metering and adjusting apparatus the same side.
This water filling device comprises regulating arm 4, drive link 3, first power transmission shaft 5, second power transmission shaft 6, regulating arm support spring 9, regulating arm base for supporting 10 and water-filling nozzle 11; Drive link 3 links to each other with second power transmission shaft 6 by first power transmission shaft 5; Water-filling nozzle 11 is arranged at second power transmission shaft, 6 ends; Regulating arm 4 one ends are arranged on the regulating arm base for supporting 10, wherein be concavo-convex the cooperation between regulating arm 4 one ends and the regulating arm base for supporting 10, other end inside is provided with water-filling nozzle 11, regulating arm 4 belows are provided with regulating arm support spring 9, and motor 2 directly drives drive link 3 and regulating arm base for supporting 10.
Drive link 3 links to each other with first power transmission shaft 5 by last universal connector; Joint coupling linked to each other with second power transmission shaft 6 under first power transmission shaft 5 passed through, and the flow meter that last flow measurement pipe nipple 1 and down-off measurement pipe nipple 8 can be common also can be a ultrasonic flowmeter.
The present invention in use, the automatic measurement and adjustment instrument of water injection well double fluid amount provided by the present invention is transferred to the aspect that the down-hole needs measurement of discharge, because feather key 7 is along same axial the same side that is arranged at the automatic measurement and adjustment instrument of water injection well double fluid amount jointly with regulating arm 4, when feather key 7 enters the down-hole and needs the aspect of measurement of discharge, position when its regulating arm 4 is opened and the position of underground water-injection mouth are complementary substantially, drive the position of regulating arm 4 and water-filling nozzle 11 by motor 2, just can carry out the water filling action to the down-hole, simultaneously, the present invention can be according to the user's request difference, adopt two ultrasonic flow rate water inlet pipes up and down, two probe measurements can be realized, and the total flow that flows into this layer seating nipple can be drawn simultaneously, inject this laminar flow amount and three values of total water injection rate that flow to lower floor.Especially be fit to the bigger complex hole condition of layer coupling is carried out water filling allotment work, not only efficient improves greatly, and can really realize accurate water distribution.
The motion mode of regulating arm 4 is: motor 2 is in rotating process, the output shaft of motor 2 directly promotes regulating arm base for supporting 10 by the leading screw mode, by the concavo-convex fit system of regulating arm base for supporting 10 with regulating arm 4, force the axially-movable of regulating arm 4 along motor 2, under the effect of regulating arm support spring 9, it is axial away from motor 2 to support regulating arm 4, makes regulating arm 4 reach open purpose.When regulating arm 4 arrives underground water-injection mouth position, make water-filling nozzle 11 and the underground water-injection mouth close fit that is arranged in the regulating arm 4 this moment, the output shaft of motor 2 is connected with drive link 3, it drives drive link 3 rotations, drive link 3 drives water-filling nozzle 11 by first power transmission shaft 5 and second power transmission shaft 6 and rotates, can realize screwing and unscrewing to the down-hole water nozzle, thereby control its flow, during recovery, water-filling nozzle 11 and underground water-injection mouth are broken away from, motor 2 reverse rotations then, regulating arm base for supporting 10 drives regulating arm 4 counter motions, regulating arm 4 compacting regulating arm support springs 9 reset, and get final product.
Claims (5)
1. a water injection well double fluid is measured automatic measurement and adjustment instrument, it is characterized in that: the automatic measurement and adjustment instrument of described water injection well double fluid amount is disposed with flow measurement pipe nipple, motor, water filling device, feather key and down-off and measures pipe nipple; Described motor-driven water filling device; Described water filling device and feather key are arranged at the two probe of water injection well flow metering and adjusting apparatus the same side.
2. the automatic measurement and adjustment instrument of water injection well double fluid amount according to claim 1, it is characterized in that: described water filling device comprises regulating arm, drive link, first power transmission shaft, second power transmission shaft, regulating arm support spring, regulating arm base for supporting and water-filling nozzle; Described drive link links to each other with second power transmission shaft by first power transmission shaft; Described water-filling nozzle is arranged at the second power transmission shaft end; Described regulating arm base for supporting and motor flexibly connect; Described regulating arm one end is arranged on the regulating arm base for supporting, and other end inside is provided with water-filling nozzle, and described regulating arm below is provided with the regulating arm support spring; Described motor direct-drive drive link and regulating arm base for supporting.
3. the automatic measurement and adjustment instrument of water injection well double fluid amount according to claim 2, it is characterized in that: described drive link links to each other with first power transmission shaft by last universal connector; Described first power transmission shaft passes through down, and joint coupling links to each other with second power transmission shaft.
4. the automatic measurement and adjustment instrument of water injection well according to claim 3 double fluid amount is characterized in that: between described regulating arm one end and the regulating arm base for supporting is concavo-convex the cooperation.
5. according to claim 1 or the automatic measurement and adjustment instrument of 2 or 3 or 4 described water injection well double fluid amounts, it is characterized in that: it is ultrasonic flowmeter that described upward flow measurement pipe nipple and down-off are measured pipe nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153694 CN102235164B (en) | 2010-04-22 | 2010-04-22 | Double-flow automatic measurement and regulation instrument for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153694 CN102235164B (en) | 2010-04-22 | 2010-04-22 | Double-flow automatic measurement and regulation instrument for water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102235164A true CN102235164A (en) | 2011-11-09 |
| CN102235164B CN102235164B (en) | 2013-09-04 |
Family
ID=44886224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010153694 Active CN102235164B (en) | 2010-04-22 | 2010-04-22 | Double-flow automatic measurement and regulation instrument for water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235164B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291230A (en) * | 2013-05-27 | 2013-09-11 | 贵州航天凯山石油仪器有限公司 | Method and device for grabbing and releasing multiple water nozzles in underground environment |
| CN104747108A (en) * | 2015-02-10 | 2015-07-01 | 中国石油天然气股份有限公司 | Multifunctional electric control throwing and fishing device |
| CN106050201A (en) * | 2016-08-09 | 2016-10-26 | 中国海洋石油总公司 | Cableless layering water injection method capable of achieving downhole flow, pressure and temperature monitoring |
| CN117605444A (en) * | 2024-01-22 | 2024-02-27 | 西安思坦仪器股份有限公司 | High-temperature intelligent water distributor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002634A1 (en) * | 1996-07-13 | 1998-01-22 | Schlumberger Limited | Downhole tool and method |
| CN2653126Y (en) * | 2003-09-19 | 2004-11-03 | 贵州航天凯山石油仪器有限公司 | Automatic regulater for injection quantity for oil field water injection well |
| CN2727392Y (en) * | 2004-07-23 | 2005-09-21 | 上海嘉地仪器有限公司 | Downhole measuring and regulating apparatus with an overhead flowmeter |
| CN1818334A (en) * | 2005-02-07 | 2006-08-16 | 杨朝杰 | Synchronizing flow seal-verification testing method and tester thereof |
| CN200964847Y (en) * | 2006-10-18 | 2007-10-24 | 杨朝杰 | Intelligent seal-testing flow-measuring and adjusting device |
| US20080067116A1 (en) * | 2002-11-26 | 2008-03-20 | Unico, Inc. | Determination And Control Of Wellbore Fluid Level, Output Flow, And Desired Pump Operating Speed, Using A Control System For A Centrifugal Pump Disposed Within The Wellbore |
| CN201184178Y (en) * | 2008-03-25 | 2009-01-21 | 西安思坦仪器股份有限公司 | Down-hole instrument capable of automatically measuring and adjusting flow |
| CN201635723U (en) * | 2010-04-22 | 2010-11-17 | 西安思坦仪器股份有限公司 | Double-probe automatic flow measuring and adjusting instrument for water injection well |
-
2010
- 2010-04-22 CN CN 201010153694 patent/CN102235164B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002634A1 (en) * | 1996-07-13 | 1998-01-22 | Schlumberger Limited | Downhole tool and method |
| US20080067116A1 (en) * | 2002-11-26 | 2008-03-20 | Unico, Inc. | Determination And Control Of Wellbore Fluid Level, Output Flow, And Desired Pump Operating Speed, Using A Control System For A Centrifugal Pump Disposed Within The Wellbore |
| CN2653126Y (en) * | 2003-09-19 | 2004-11-03 | 贵州航天凯山石油仪器有限公司 | Automatic regulater for injection quantity for oil field water injection well |
| CN2727392Y (en) * | 2004-07-23 | 2005-09-21 | 上海嘉地仪器有限公司 | Downhole measuring and regulating apparatus with an overhead flowmeter |
| CN1818334A (en) * | 2005-02-07 | 2006-08-16 | 杨朝杰 | Synchronizing flow seal-verification testing method and tester thereof |
| CN200964847Y (en) * | 2006-10-18 | 2007-10-24 | 杨朝杰 | Intelligent seal-testing flow-measuring and adjusting device |
| CN201184178Y (en) * | 2008-03-25 | 2009-01-21 | 西安思坦仪器股份有限公司 | Down-hole instrument capable of automatically measuring and adjusting flow |
| CN201635723U (en) * | 2010-04-22 | 2010-11-17 | 西安思坦仪器股份有限公司 | Double-probe automatic flow measuring and adjusting instrument for water injection well |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291230A (en) * | 2013-05-27 | 2013-09-11 | 贵州航天凯山石油仪器有限公司 | Method and device for grabbing and releasing multiple water nozzles in underground environment |
| CN103291230B (en) * | 2013-05-27 | 2016-04-13 | 贵州航天凯山石油仪器有限公司 | The method and apparatus capturing and throw in branched water nozzle is realized in down-hole |
| CN104747108A (en) * | 2015-02-10 | 2015-07-01 | 中国石油天然气股份有限公司 | Multifunctional electric control throwing and fishing device |
| CN104747108B (en) * | 2015-02-10 | 2017-06-16 | 中国石油天然气股份有限公司 | Multifunctional electric control throwing and fishing device |
| CN106050201A (en) * | 2016-08-09 | 2016-10-26 | 中国海洋石油总公司 | Cableless layering water injection method capable of achieving downhole flow, pressure and temperature monitoring |
| CN117605444A (en) * | 2024-01-22 | 2024-02-27 | 西安思坦仪器股份有限公司 | High-temperature intelligent water distributor |
| CN117605444B (en) * | 2024-01-22 | 2024-04-12 | 西安思坦仪器股份有限公司 | High-temperature intelligent water distributor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102235164B (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201635723U (en) | Double-probe automatic flow measuring and adjusting instrument for water injection well | |
| CN105422062B (en) | Bridge type concentric integrated seal-testing single-layer direct-measurement adjusting instrument | |
| CN206158705U (en) | Integrated intelligent injection allocation device | |
| CN102235164B (en) | Double-flow automatic measurement and regulation instrument for water injection well | |
| CN202383121U (en) | Device for simulating liquid carried by gas | |
| CN103375155B (en) | The linear physical simulation system of heavy crude reservoir thermal recovery | |
| CN201697813U (en) | Crude oil tank and crude oil multi-pipeline automatic sampling device | |
| CN105222986B (en) | One kind visualization liquid-liquid diphasic flow circuit experimental provision | |
| CN105390060B (en) | Horizontal directional drill annular space multi- scenarios method analogic drilling experimental method and experimental provision | |
| CN201407030Y (en) | Homocentric intelligent water distribution downhole test and modification apparatus | |
| CN105863583B (en) | Cable-controlled split bridge type full-automatic water distributor for oil field | |
| CN104165050B (en) | Device for directly metering oil and gas production of crude oil of single well | |
| CN106223913B (en) | A kind of multistation automatic water filling device and its control method | |
| CN103075136A (en) | Control device for underground layered flow rate of water injection well | |
| CN208763633U (en) | Anti-clogging is intelligently layered injection well downhole flow regulator | |
| CN202844902U (en) | On-line blending device for emulsion polymer | |
| CN205477569U (en) | SAGD well head is annotated and is adopted manifold sledge | |
| CN209129588U (en) | Two-way carrier-wave transmission differential pressure nozzle water distributor | |
| CN109236251A (en) | Remote control seperated layer water injection system | |
| CN207516091U (en) | A kind of Environment of Reservoirs monitors adjustable water sample acquisition device | |
| CN2769510Y (en) | Multi-well combined constant-flow water distributor | |
| CN206477829U (en) | A kind of multi-functional preset cable type intelligent watering device | |
| CN102434120B (en) | Back-pressure compensating device for managed-pressure drilling | |
| CN205297506U (en) | Bridge type concentric integrated seal-testing single-layer direct-measurement adjusting instrument | |
| CN201184178Y (en) | Down-hole instrument capable of automatically measuring and adjusting flow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Double-flow automatic measurement and regulation instrument for water injection well Effective date of registration: 20170928 Granted publication date: 20130904 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: 2017610000115 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20181120 Granted publication date: 20130904 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: 2017610000115 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Double flow automatic measuring and adjusting instrument for water injection well Effective date of registration: 20211209 Granted publication date: 20130904 Pledgee: Export Import Bank of China Gansu Branch Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: Y2021620000016 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230106 Granted publication date: 20130904 Pledgee: Export Import Bank of China Gansu Branch Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: Y2021620000016 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Double flow automatic measuring and adjusting instrument for water injection well Effective date of registration: 20230111 Granted publication date: 20130904 Pledgee: Export Import Bank of China Gansu Branch Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: Y2023620000007 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20130904 Pledgee: Export Import Bank of China Gansu Branch Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: Y2023620000007 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Double flow automatic measuring and adjusting instrument for water injection wells Granted publication date: 20130904 Pledgee: Export Import Bank of China Gansu Branch Pledgor: Xi'an Sitan Instruments Co.,Ltd. Registration number: Y2024620000004 |