CN104727777A - Temperature-control type hydraulic packer - Google Patents
Temperature-control type hydraulic packer Download PDFInfo
- Publication number
- CN104727777A CN104727777A CN201510156899.0A CN201510156899A CN104727777A CN 104727777 A CN104727777 A CN 104727777A CN 201510156899 A CN201510156899 A CN 201510156899A CN 104727777 A CN104727777 A CN 104727777A
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- CN
- China
- Prior art keywords
- interior pipe
- hydraulic cylinder
- fixed mechanism
- ring
- snap ring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to a temperature-control type hydraulic packer. A lower fixing mechanism is installed at the lower portion of an inner pipe, a one-way outer lock catch is arranged on the inner pipe, a rubber barrel is installed on the inner pipe in a sleeving mode, the lower portion of the rubber barrel is seated on the lower fixing mechanism, a one-way locking mechanism is placed at the upper portion of the rubber barrel, and an inner lock catch matched with the one-way outer lock catch is arranged on the inner wall of a lock ring in the one-way locking mechanism; an upper fixing mechanism is installed at the upper middle portion of the inner pipe, a hydraulic cylinder is installed outside the inner pipe and the upper fixing mechanism in a sleeving mode from the upper portion of the inner pipe downwards, a temperature-control hanging ring is arranged between the hydraulic cylinder and the inner pipe to enable the hydraulic cylinder to be hung on the inner pipe, the temperature-control hanging ring is made of low-melting-point alloys, a cavity is formed among the inner pipe, the hydraulic cylinder and the upper fixing mechanism, an upper sealing ring is arranged between the inner pipe and the hydraulic cylinder, an outside sealing ring is arranged between the hydraulic cylinder and the upper fixing mechanism, an inside sealing ring is arranged between the upper fixing mechanism and the inner pipe, the cavity becomes a closed cavity through the upper sealing ring, the outside sealing ring and the inside sealing ring, and the lower portion of the hydraulic cylinder is connected with the one-way locking mechanism so as to enable the one-way locking mechanism to move along with the hydraulic cylinder.
Description
Technical field
The invention belongs to the water-tight equipment of oil field oil-field thick-oil thermal production well, is a kind of temperature control type hydraulic packer.
Background technology
In order to steam injection recovery after heavy crude reservoir sieve tube completion, need the packer entering the outer layering of pipe under in well.Current external packer of pipe complex structure, component are many, poor reliability, and application life is short, the oil well production cycle is short, and it is setting to need ground to suppress ability, and the bottom of packer also will configure the instrument of the airtight tubing string of energy, this cover instrument also needs the later stage open-minded, and thus construction sequence is many, and completion period is long.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, design a kind of temperature control type hydraulic packer, high temperature when utilizing steam injection recovery and pressure setting, improve the production cycle of thick oil thermal extraction, reduce construction sequence.
The object of the present invention is achieved like this: comprise interior pipe, hydraulic cylinder, temperature control hanging ring, upper sealing ring, upper fixed mechanism, outer side seal circle, inner seal circle, one-way locking mechanism, packing element, lower fixed mechanism, lower fixed mechanism is arranged on the bottom of interior pipe, lower fixed mechanism can not move axially on inner pipe, interior pipe there is unidirectional outer clasp, packing element suit on inner pipe, the lower seat of packing element is on lower fixed mechanism, one-way locking mechanism is placed on the top of packing element, the inwall of the in-house lock ring of one-way locking there is the inner lock buckle matched with unidirectional outer clasp, fixed mechanism is installed in the middle and upper part of interior pipe, upper fixed mechanism can not move axially on inner pipe, and upper fixed mechanism is on one-way locking mechanism, and hydraulic cylinder is sleeved on interior pipe downwards from the top of interior pipe, outside upper fixed mechanism, be temperature control hanging ring between hydraulic cylinder and interior pipe, hydraulic cylinder is hung on inner pipe, and temperature control hanging ring is low-melting alloy, interior pipe, hydraulic cylinder, form cavity between upper fixed mechanism, between interior pipe and hydraulic cylinder, have upper sealing ring, between hydraulic cylinder and upper fixed mechanism, have outer side seal circle, have inner seal circle between upper fixed mechanism and interior pipe, upper sealing ring, outer side seal circle, inner seal circle makes cavity become closed chamber, and the bottom of hydraulic cylinder is connected with one-way locking mechanism, and one-way locking mechanism is moved with hydraulic cylinder.
Hydraulic cylinder is arranged UNICOM road, make cavity and external communication, in described UNICOM road, blocking is installed, makes described UNICOM road by shutoff.
Lower fixed mechanism comprises lower buckle closure, lower snap ring, lower bracket, lower snap ring is semicircular ring, the inner diameter of lower snap ring is less than the external diameter of interior pipe, lower snap ring sticks in the groove of interior pipe, lower buckle closure is sleeved on after outside lower snap ring, make lower snap ring diametrically can not outwards movement, lower buckle closure be fixed on inner pipe after being threaded with lower bracket.
Upper fixed mechanism comprises buckle closure, upper snap ring, upper bracket, upper snap ring is semicircular ring, the inner diameter of upper snap ring is less than the external diameter of interior pipe, upper snap ring sticks in the groove of interior pipe, upper buckle closure is sleeved on after outside snap ring, make snap ring diametrically can not outwards movement, be fixed on inner pipe after upper buckle closure is threaded with upper bracket.
The invention has the beneficial effects as follows: being assembled into the rear cavity of one is airtight chamber, arrive down external pressure after in well high, internal pressure is low, temperature control hanging ring is low-melting alloy, during steam injection recovery, well temperature is higher than the fusing point of temperature control hanging ring, temperature control hanging ring melts, hydraulic cylinder produces downward axial force under pressure, drive one-way locking mechanism to descending compression packing element, make it expand change and seal the borehole wall greatly, hydraulic cylinder drives one-way locking mechanism also to go downwards to unidirectional external lock buckle to the in-house lock ring of one-way locking time descending, inner lock buckle on the inwall of the in-house lock ring of one-way locking and the outer clasp on interior pipe are fastened togather, one-way locking mechanism can not be return, packing element is made forever to be in expansion compressive state, the present invention utilizes the pressure and temperature of self in well to realize setting, do not need before steam injection to suppress separately, thus structure is simple, functional reliability is high, the production cycle of thick oil thermal extraction can be improved, simultaneously because construction sequence is few, short construction period, there is significant economic benefit.
Accompanying drawing explanation
Fig. 1 is the assembling drawing of the embodiment of the present invention.
Fig. 2 is the structure chart of upper fixed mechanism.
Fig. 3 is the structure chart of lower fixed mechanism.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described.
As seen from the figure, embodiments of the invention comprise interior pipe 1, hydraulic cylinder 2, temperature control hanging ring 3, upper sealing ring 4, upper fixed mechanism 7, outer side seal circle 8, inner seal circle 9, one-way locking mechanism 10, packing element 12, lower fixed mechanism 13, lower fixed mechanism 13 is arranged on the bottom of interior pipe 1, lower fixed mechanism 13 can not move axially on interior pipe 1, interior pipe 1 there is unidirectional outer clasp 11, packing element 12 is sleeved on interior pipe 1, the lower seat of packing element 12 is on lower fixed mechanism 13, one-way locking mechanism 10 is placed on the top of packing element 12, the inwall of the lock ring in one-way locking mechanism 10 there is the inner lock buckle matched with unidirectional outer clasp 11, (the Y441 in this structure and oil field, one-way mechanism on the packers such as Y445 is identical, those skilled in the art is very familiar) middle and upper part of interior pipe 1 installs fixed mechanism 7, upper fixed mechanism 7 can not move axially on interior pipe 1, upper fixed mechanism 7 is on one-way locking mechanism 10, hydraulic cylinder 2 is sleeved on interior pipe 1 downwards from the top of interior pipe 1, outside upper fixed mechanism 7, it is temperature control hanging ring 3 between hydraulic cylinder 2 and interior pipe 1, hydraulic cylinder 2 is made to be suspended on interior pipe 1, temperature control hanging ring 3 is low-melting alloy, its fusing point is lower than the temperature injecting steam, the position of the corresponding temperature control hanging ring 3 of hydraulic cylinder 2 has duct, from then on temperature control hanging ring 3 is circulated into position as shown in Figure 1 in duct after being fused into liquid, temperature decline after coagulation bears suspension force, interior pipe 1, hydraulic cylinder 2, cavity 6 is formed between upper fixed mechanism 7, upper sealing ring 4 is had between interior pipe 1 and hydraulic cylinder 2, outer side seal circle 8 is had between hydraulic cylinder 2 and upper fixed mechanism 7, inner seal circle 9 is had between upper fixed mechanism 7 and interior pipe 1, upper sealing ring 4, outer side seal circle 8, inner seal circle 9 makes cavity 6 become closed chamber, the upper end area making hydraulic cylinder 2 bear high pressure is greater than lower end area, the bottom of hydraulic cylinder 2 is connected with one-way locking mechanism 10, one-way locking mechanism 10 is moved with hydraulic cylinder 2.
Hydraulic cylinder 2 is arranged UNICOM road, make cavity 6 and external communication, in described UNICOM road, blocking 5 is installed, make described UNICOM road by shutoff, ensure that cavity 6 is in air-tight state.Hydraulic cylinder 2 arranges UNICOM road, is for the ease of assembling, and when preventing from assembling, during the smaller volume of cavity 6, air is compressed and assembles difficulty in the street.
Lower fixed mechanism 13 is to form the strong point on interior pipe 1, axial force is transferred on interior pipe 1, lower fixed mechanism comprises lower buckle closure 13-1, lower snap ring 13-2, lower bracket 13-3, lower snap ring 13-2 is semicircular ring (installation two pieces), the inner diameter of lower snap ring 13-2 is less than the external diameter of interior pipe 1, lower snap ring 13-2 sticks in the groove of interior pipe 1, lower buckle closure 13-1 is sleeved on after outside lower snap ring 13-2, make lower snap ring 13-2 diametrically can not outwards movement, lower buckle closure 13-1 is fixed in after being threaded with lower bracket 13-3 on interior pipe 1, lower fixed mechanism 13 can not be moved axially on inner pipe.
Upper fixed mechanism 7 is to form the strong point on interior pipe 1, axial force is transferred on interior pipe 1, upper fixed mechanism 7 comprises buckle closure 7-1, upper snap ring 7-2, upper bracket 7-3, upper snap ring 7-2 is semicircular ring (installation two pieces), the inner diameter of upper snap ring 7-2 is less than the external diameter of interior pipe 1, upper snap ring 7-2 sticks in the groove of interior pipe 1, upper buckle closure 7-1 is sleeved on after outside snap ring 7-2, make snap ring 7-2 diametrically can not outwards movement, be fixed on interior pipe 1 after upper buckle closure 7-1 is threaded with upper bracket 7-3.
Claims (4)
1. a temperature control type hydraulic packer, comprise interior pipe (1), hydraulic cylinder (2), temperature control hanging ring (3), upper sealing ring (4), upper fixed mechanism (7), outer side seal circle (8), inner seal circle (9), one-way locking mechanism (10), packing element (12), lower fixed mechanism (13), it is characterized in that: lower fixed mechanism (13) is arranged on the bottom of interior pipe (1), lower fixed mechanism (13) can not move axially on interior pipe (1), interior pipe (1) there is unidirectional outer clasp (11), packing element (12) is sleeved on interior pipe (1), the lower seat of packing element (12) is on lower fixed mechanism (13), one-way locking mechanism (10) is placed on the top of packing element (12), the inwall of the lock ring in one-way locking mechanism (10) there is the inner lock buckle matched with unidirectional outer clasp (11), fixed mechanism (7) is installed in the middle and upper part of interior pipe (1), upper fixed mechanism (7) can not move axially on interior pipe (1), upper fixed mechanism (7) is on one-way locking mechanism (10), hydraulic cylinder (2) is sleeved on interior pipe (1) downwards from the top of interior pipe (1), upper fixed mechanism (7) outward, temperature control hanging ring (3) between hydraulic cylinder (2) and interior pipe (1), hydraulic cylinder (2) is made to be suspended on interior pipe (1), temperature control hanging ring (3) is low-melting alloy, interior pipe (1), hydraulic cylinder (2), cavity (6) is formed between upper fixed mechanism (7), upper sealing ring (4) is had between interior pipe (1) and hydraulic cylinder (2), outer side seal circle (8) is had between hydraulic cylinder (2) and upper fixed mechanism (7), inner seal circle (9) is had between upper fixed mechanism (7) and interior pipe (1), upper sealing ring (4), outer side seal circle (8), inner seal circle (9) makes cavity (6) become closed chamber, the bottom of hydraulic cylinder (2) is connected with one-way locking mechanism (10), make one-way locking mechanism (10) mobile with hydraulic cylinder (2).
2. temperature control type hydraulic packer according to claim 1, is characterized in that: (2) arrange UNICOM road to hydraulic cylinder, makes cavity (6) and external communication, installs blocking (5), make described UNICOM road by shutoff in described UNICOM road.
3. temperature control type hydraulic packer according to claim 1, it is characterized in that: lower fixed mechanism comprises lower buckle closure (13-1), lower snap ring (13-2), lower bracket (13-3), lower snap ring (13-2) is semicircular ring, the inner diameter of lower snap ring (13-2) is less than the external diameter of interior pipe (1), lower snap ring (13-2) sticks in the groove of interior pipe (1), lower buckle closure (13-1) be sleeved on lower snap ring (13-2) outward after, make lower snap ring (13-2) diametrically can not outwards movement, lower buckle closure (13-1) is fixed on interior pipe (1) after being threaded with lower bracket (13-3).
4. the temperature control type hydraulic packer according to claim 1 or 3, it is characterized in that: upper fixed mechanism comprises buckle closure (7-1), upper snap ring (7-2), upper bracket (7-3), upper snap ring (7-2) is semicircular ring, the inner diameter of upper snap ring (7-2) is less than the external diameter of interior pipe (1), upper snap ring (7-2) sticks in the groove of interior pipe (1), upper buckle closure (7-1) be sleeved on snap ring (7-2) outward after, make snap ring (7-2) diametrically can not outwards movement, upper buckle closure (7-1) is fixed on interior pipe (1) after being threaded with upper bracket (7-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510156899.0A CN104727777B (en) | 2015-04-04 | 2015-04-04 | Temperature control type hydraulic packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510156899.0A CN104727777B (en) | 2015-04-04 | 2015-04-04 | Temperature control type hydraulic packer |
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| Publication Number | Publication Date |
|---|---|
| CN104727777A true CN104727777A (en) | 2015-06-24 |
| CN104727777B CN104727777B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510156899.0A Active CN104727777B (en) | 2015-04-04 | 2015-04-04 | Temperature control type hydraulic packer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522907A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Salvageable thermal production well pipe string and application method thereof |
| CN106522871A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Open hole packer |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111710A (en) * | 1994-05-16 | 1995-11-15 | 唐山龙加电子技术开发有限公司 | Packer for C and WK |
| US20090255691A1 (en) * | 2008-04-10 | 2009-10-15 | Baker Hughes Incorporated | Permanent packer using a slurry inflation medium |
| CN101730583A (en) * | 2007-05-30 | 2010-06-09 | 国际教育协会创新工业电子有限公司 | Polymerization device |
| CN201756937U (en) * | 2010-07-07 | 2011-03-09 | 沈阳新蓝天科技实业有限公司 | Oil well thermal recovery packer |
| CN201924871U (en) * | 2011-02-18 | 2011-08-10 | 东营百华石油技术开发有限公司 | Heat-sensitive packer of steam injection well |
| CN102337856A (en) * | 2010-07-16 | 2012-02-01 | 张学锋 | Novel thermally-expanded extrusion packer for viscous oil steam-injection well |
| US20120217003A1 (en) * | 2011-02-24 | 2012-08-30 | Baker Hughes Incorporated | Open Hole Expandable Packer with Extended Reach Feature |
| US20120261127A1 (en) * | 2011-04-12 | 2012-10-18 | Saudi Arabian Oil Company | Sliding stage cementing tool and method |
| CN102865050A (en) * | 2012-09-25 | 2013-01-09 | 成都理工大学 | Permanent prestressed thermosensitive automatic packer |
| WO2013062566A1 (en) * | 2011-10-28 | 2013-05-02 | Halliburton Energy Services, Inc. | Downhole packer assembly having a selective fluid bypass and method for use thereof |
| CN203296743U (en) * | 2013-06-20 | 2013-11-20 | 盘锦市兴隆台区欢喜福利综合厂 | Double-acting temperature-sensitive steam injection packer |
| CN204113198U (en) * | 2014-07-16 | 2015-01-21 | 中国石油天然气股份有限公司 | Temperature control hot washing anti-pollution packer |
| CN204552680U (en) * | 2015-04-04 | 2015-08-12 | 东营百华石油技术开发有限公司 | Temperature control type hydraulic packer |
-
2015
- 2015-04-04 CN CN201510156899.0A patent/CN104727777B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111710A (en) * | 1994-05-16 | 1995-11-15 | 唐山龙加电子技术开发有限公司 | Packer for C and WK |
| CN101730583A (en) * | 2007-05-30 | 2010-06-09 | 国际教育协会创新工业电子有限公司 | Polymerization device |
| US20090255691A1 (en) * | 2008-04-10 | 2009-10-15 | Baker Hughes Incorporated | Permanent packer using a slurry inflation medium |
| CN201756937U (en) * | 2010-07-07 | 2011-03-09 | 沈阳新蓝天科技实业有限公司 | Oil well thermal recovery packer |
| CN102337856A (en) * | 2010-07-16 | 2012-02-01 | 张学锋 | Novel thermally-expanded extrusion packer for viscous oil steam-injection well |
| CN201924871U (en) * | 2011-02-18 | 2011-08-10 | 东营百华石油技术开发有限公司 | Heat-sensitive packer of steam injection well |
| US20120217003A1 (en) * | 2011-02-24 | 2012-08-30 | Baker Hughes Incorporated | Open Hole Expandable Packer with Extended Reach Feature |
| US20120261127A1 (en) * | 2011-04-12 | 2012-10-18 | Saudi Arabian Oil Company | Sliding stage cementing tool and method |
| WO2013062566A1 (en) * | 2011-10-28 | 2013-05-02 | Halliburton Energy Services, Inc. | Downhole packer assembly having a selective fluid bypass and method for use thereof |
| CN102865050A (en) * | 2012-09-25 | 2013-01-09 | 成都理工大学 | Permanent prestressed thermosensitive automatic packer |
| CN203296743U (en) * | 2013-06-20 | 2013-11-20 | 盘锦市兴隆台区欢喜福利综合厂 | Double-acting temperature-sensitive steam injection packer |
| CN204113198U (en) * | 2014-07-16 | 2015-01-21 | 中国石油天然气股份有限公司 | Temperature control hot washing anti-pollution packer |
| CN204552680U (en) * | 2015-04-04 | 2015-08-12 | 东营百华石油技术开发有限公司 | Temperature control type hydraulic packer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522907A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Salvageable thermal production well pipe string and application method thereof |
| CN106522871A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Open hole packer |
| CN106522907B (en) * | 2015-09-15 | 2019-04-05 | 中国石油化工股份有限公司 | Salvageable thermal recovery well casing string and its application method |
| CN106522871B (en) * | 2015-09-15 | 2019-04-05 | 中国石油化工股份有限公司 | A kind of open hole packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104727777B (en) | 2017-03-08 |
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| CB03 | Change of inventor or designer information |
Inventor after: Shang Juntao Inventor after: Zhang Wenbo Inventor after: Zhang Jian Inventor after: Zhang Kun Inventor after: Pang Mingyu Inventor after: Wang Shuhan Inventor after: Sun Hangjun Inventor after: Li Tao Inventor after: Xu Juan Inventor after: Cheng Weihai Inventor after: Ma Huzi Inventor after: Wang Shichao Inventor before: Shang Juntao Inventor before: Zhang Wenbo Inventor before: Pang Mingyu Inventor before: Wang Shuhan Inventor before: Sun Hangjun Inventor before: Li Tao Inventor before: Xu Juan Inventor before: Cheng Weihai Inventor before: Ma Huzi Inventor before: Wang Shichao |
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Denomination of invention: Temperature-control type hydraulic packer Effective date of registration: 20170811 Granted publication date: 20170308 Pledgee: China Co. truction Bank Corp Dongying Shengda subbranch Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: 2017990000739 |
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Date of cancellation: 20200630 Granted publication date: 20170308 Pledgee: China Co. truction Bank Corp Dongying Shengda subbranch Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: 2017990000739 |
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| 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: Temperature-control type hydraulic packer Effective date of registration: 20200630 Granted publication date: 20170308 Pledgee: Dongying rural commercial bank Limited by Share Ltd. West City Branch Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2020980003663 |
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Date of cancellation: 20211223 Granted publication date: 20170308 Pledgee: Dongying rural commercial bank Limited by Share Ltd. West City Branch Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2020980003663 |
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| 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: Temperature controlled hydraulic packer Effective date of registration: 20211229 Granted publication date: 20170308 Pledgee: Dongying rural commercial bank Limited by Share Ltd. West City Branch Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2021980016908 |
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Date of cancellation: 20230116 Granted publication date: 20170308 Pledgee: Dongying rural commercial bank Limited by Share Ltd. West City Branch Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2021980016908 |
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Denomination of invention: Temperature controlled hydraulic packer Effective date of registration: 20231227 Granted publication date: 20170308 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Pledgor: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2023980075105 |