CN104727775A - Adjustable backflow-preventing blanking plug - Google Patents
Adjustable backflow-preventing blanking plug Download PDFInfo
- Publication number
- CN104727775A CN104727775A CN201510118011.4A CN201510118011A CN104727775A CN 104727775 A CN104727775 A CN 104727775A CN 201510118011 A CN201510118011 A CN 201510118011A CN 104727775 A CN104727775 A CN 104727775A
- Authority
- CN
- China
- Prior art keywords
- seat assembly
- valve seat
- blanking plug
- port
- main body
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 210000002445 nipple Anatomy 0.000 claims description 13
- 238000002347 injection Methods 0.000 abstract description 17
- 239000007924 injection Substances 0.000 abstract description 17
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- 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)
Abstract
The invention relates to an adjustable backflow-preventing blanking plug which comprises a body. A pressing cap is screwed at an upper port of the body, an open nut is screwed in the pressing cap, and a fishing head penetrates into the pressing cap. A working cylinder is screwed on the lower portion of the body, a lead screw is arranged in the center of the working cylinder, the upper portion of the lead screw is connected with the lower portion of the fishing head, and a valve element is fixed to the lower end of the lead screw. The valve element is sleeved with a valve seat assembly. A guide head is screwed in the lower port of the working cylinder, a water flow passage is arranged in the guide head, a valve ball is arranged at an inner port of the water flow passage, the valve ball abuts against the support, and the support abuts against the valve seat assembly. The adjustable backflow preventing blanking plug additionally has a backflow prevention function, can also adjust the opening degree of a water nozzle and well solves the problem that due to the fact that impurities like stratum oil dirt and sand enter the blanking plug and block a water injection port when the stratum pressure is higher than the water injection pressure of a water injection well, the water injection efficiency of the water injection well is affected.
Description
Technical field
The present invention relates to a kind of proof adjustable to return and tell blanking plug.
Background technology
Current oil-field flooding tubing string many employings eccentric injection mandrel tubing string, eccentric injection mandrel is built-in with blanking plug, controls water injection rate by blanking plug.And current blanking plug is because reasons in structure is when water distribution, due to the change of water injection pressure, also the change of water injection rate is caused, cause water filling and adjust out of control, the workload of down-hole water transfer increases, and affects water filling quality, thus labor strength increases, cost increase, claim for eot, have impact on normal production.
Summary of the invention
The object of the invention is to propose one have and anti-tell function, the proof adjustable that can change water injection rate returns tells blanking plug.
The object of the present invention is achieved like this: proof adjustable returns to be told blanking plug and comprise main body, and to spin pressure cap in main body upper port, spin in pressure cap opening nut, and fishing head penetrates in pressure cap.In main body, be provided with cam holder, it is equiped with bearing pin, bearing pin installs cam, between bearing pin and main body, cover has torsion spring.Be provided with spring between cam holder and pressure cap, cam holder top and positioning sleeve contact, and positioning sleeve top and fishing head contact.To spin seating nipple in lower body part, seating nipple center is provided with a leading screw, leading screw top is connected with fishing head bottom, leading screw lower end is fixed with spool by screw, and spool overcoat has valve seat assembly, and spin guide head in seating nipple lower port, water stream channel is provided with in guide head, water stream channel inner port place is provided with valve ball, and valve ball and support contact, and support and valve seat assembly contact.
The application is relative to conventional blanking plug, the difference maximum with it is to add anti-function of telling and the adjustment can also carrying out water nozzle aperture, well can solve water injection well and enter blanking plug blocking water filling port due to strata pressure higher than impurity such as stratum greasy dirt, the grains of sand during water injection pressure, affect the water-injection efficiency of water injection well.Can also realize underground to enter measurement and adjustment instrument adjusted simultaneously, changes the water filling water yield.
Accompanying drawing illustrates: technical scheme of the present invention is provided by following drawings and Examples:
Fig. 1 is that proof adjustable returns and tells plug structure schematic diagram.
Legend: 1, fishing head, 2, opening nut, 3, pin-and-hole, 4, pressure cap, 5, spring, 6, main body, 7, positioning sleeve, 8, cam holder, 9, torsion spring, 10, bearing pin, 11, cam, 12, compression spring seat, 13, stage clip, 14, seating nipple, 15, leading screw, 16, lower press spring base, 17, spool, 18, screw, 19, valve seat assembly, 20, guide head, 21, sealing ring, 22, valve ball, 23, support.
Detailed description of the invention: the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Embodiment: as shown in Figure 1, proof adjustable returns to be told blanking plug and comprises main body 6, and to spin pressure cap 4 in main body 6 upper port, spin in pressure cap 4 opening nut 2, and fishing head 1 penetrates in pressure cap 4.In main body 6, be provided with cam holder 8, it be equiped with bearing pin 10, bearing pin 10 is installed cam 11, between bearing pin 10 and main body 6, cover has torsion spring 9.Be provided with spring 5 between cam holder 8 and pressure cap 4, cam holder 8 top and positioning sleeve 7 contact, and positioning sleeve 7 top and fishing head 1 contact.Spin in main body 6 bottom seating nipple 14, seating nipple 14 center is provided with a leading screw 15, leading screw 15 top is connected with fishing head 1 bottom, leading screw 15 lower end is fixed with spool 17 by screw 18, and spool 17 overcoat has valve seat assembly 19, and circumfili thick stick 15 bottom is provided with a card rib, card rib upper and lower side place cover has upper and lower press spring base 12,16, upper and lower press spring base 12,16 outer socket stage clip 13, two stage clip 13 one end and upper and lower press spring base 12,16 contact, and the other end contacts with main body 6 and valve seat assembly 19 respectively.Spin guide head 20 in seating nipple 14 lower port, is provided with water stream channel in guide head 20, and water stream channel inner port place is provided with valve ball 22, and valve ball 22 and support 23 contact, and support 23 and valve seat assembly 19 contact.
Opening nut 2 offers pin-and-hole 3.
To spin portion at seating nipple 14 and guide head 20, and be provided with sealing ring 21 in the middle part of guide head 20.
Be two terrace with edge structures in described seating nipple 14 lower port, valve seat assembly 19 external surface is provided with card rib, contacts the terrace with edge place, inner side at aforementioned two terrace with edges, and guide head 20 external surface is also provided with card rib and contacts terrace with edge place, outside at aforementioned two terrace with edges.
Described valve seat assembly 19 is cavity cylinder, its open at one end, and the other end is semiclosed, and semiclosed end is water inlet, and this water inlet is towards guide head 20.Described spool 17 is filled in valve seat assembly 19, and its diameter is equal with valve seat assembly 19 internal diameter, and volume is less than valve seat assembly 19 internal cavity volume.
In use, by twisting fishing head 1, drive the flexible of leading screw 15, thus band movable valve plug 17, valve seat assembly 19 are mobile in seating nipple 14, and then making support 23 loosen compressing to valve ball 22, the aperture realizing water nozzle in guide head 20 regulates, and changes water injection rate.When strata pressure is higher than water injection pressure, valve ball closes guide head 20, prevents formation fluid and impurity to flow into seating nipple 14, also namely prevents from entering in pit shaft.
Constitute most preferred embodiment of the present invention at above technical characteristic, relevant art feature can be increased and decreased according to actual needs.
Claims (5)
1. a proof adjustable returns and tells blanking plug and comprise main body, to spin pressure cap in main body upper port, spin in pressure cap opening nut, fishing head penetrates in pressure cap, cam holder is provided with in main body, it is equiped with bearing pin, bearing pin installs cam, between bearing pin and main body, cover has torsion spring, spring is provided with between cam holder and pressure cap, cam holder top and positioning sleeve contact, positioning sleeve top and fishing head contact, it is characterized in that: to spin seating nipple in lower body part, seating nipple center is provided with a leading screw, leading screw top is connected with fishing head bottom, leading screw lower end is fixed with spool by screw, spool overcoat has valve seat assembly, spin guide head in seating nipple lower port, water stream channel is provided with in guide head, water stream channel inner port place is provided with valve ball, valve ball and support contact, support and valve seat assembly contact.
2. proof adjustable as claimed in claim 1 returns and tells blanking plug, it is characterized in that: be two terrace with edge structures in described seating nipple lower port, valve seat assembly external surface is provided with card rib, contact the terrace with edge place, inner side at aforementioned two terrace with edges, guide head external surface is also provided with card rib and contacts terrace with edge place, outside at aforementioned two terrace with edges.
3. proof adjustable as claimed in claim 1 returns and tells blanking plug, and it is characterized in that: described valve seat assembly is cavity cylinder, its open at one end, and the other end is semiclosed, semiclosed end is water inlet, and this water inlet is towards guide head.
4. proof adjustable as claimed in claim 1 returns and tells blanking plug, and it is characterized in that: described spool plug is in valve seat assembly, and its diameter is equal with valve seat assembly internal diameter, volume is less than valve seat assembly internal cavity volume.
5. proof adjustable as claimed in claim 1 returns and tells blanking plug, it is characterized in that: circumfili thick stick bottom is provided with a card rib, card rib upper and lower side place cover has upper and lower press spring base, upper and lower press spring base is socketed stage clip outward, two stage clip one end and upper and lower press spring base contact, and the other end contacts with main body and valve seat assembly respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118011.4A CN104727775A (en) | 2015-03-18 | 2015-03-18 | Adjustable backflow-preventing blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118011.4A CN104727775A (en) | 2015-03-18 | 2015-03-18 | Adjustable backflow-preventing blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104727775A true CN104727775A (en) | 2015-06-24 |
Family
ID=53452116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510118011.4A Pending CN104727775A (en) | 2015-03-18 | 2015-03-18 | Adjustable backflow-preventing blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104727775A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134133A (en) * | 2015-09-18 | 2015-12-09 | 中国石油化工股份有限公司 | Steel wire dropping-fishing self-balance setting packer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856397Y (en) * | 2005-12-20 | 2007-01-10 | 大庆油田有限责任公司 | Constant flow regulatable obturator |
| CN2874014Y (en) * | 2006-01-26 | 2007-02-28 | 中国石化胜利油田有限公司孤岛采油厂 | Water injection pipe string bottom valve |
| CN202628021U (en) * | 2012-06-15 | 2012-12-26 | 马中原 | Controllable blanking plug |
| US20130004344A1 (en) * | 2011-06-29 | 2013-01-03 | Baker Hughes Incorporated | Well Pump with Seal Section Having a Labyrinth Flow Path in a Metal Bellows |
| CN202767938U (en) * | 2012-09-28 | 2013-03-06 | 牡丹江市新翔石油机械有限责任公司 | Adjustable plug |
| CN204040990U (en) * | 2014-07-15 | 2014-12-24 | 中国石油天然气股份有限公司 | A kind of single current adjustable stopper |
| CN204703837U (en) * | 2015-03-18 | 2015-10-14 | 新疆华隆油田科技股份有限公司 | Proof adjustable returns tells blanking plug |
-
2015
- 2015-03-18 CN CN201510118011.4A patent/CN104727775A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2856397Y (en) * | 2005-12-20 | 2007-01-10 | 大庆油田有限责任公司 | Constant flow regulatable obturator |
| CN2874014Y (en) * | 2006-01-26 | 2007-02-28 | 中国石化胜利油田有限公司孤岛采油厂 | Water injection pipe string bottom valve |
| US20130004344A1 (en) * | 2011-06-29 | 2013-01-03 | Baker Hughes Incorporated | Well Pump with Seal Section Having a Labyrinth Flow Path in a Metal Bellows |
| CN202628021U (en) * | 2012-06-15 | 2012-12-26 | 马中原 | Controllable blanking plug |
| CN202767938U (en) * | 2012-09-28 | 2013-03-06 | 牡丹江市新翔石油机械有限责任公司 | Adjustable plug |
| CN204040990U (en) * | 2014-07-15 | 2014-12-24 | 中国石油天然气股份有限公司 | A kind of single current adjustable stopper |
| CN204703837U (en) * | 2015-03-18 | 2015-10-14 | 新疆华隆油田科技股份有限公司 | Proof adjustable returns tells blanking plug |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134133A (en) * | 2015-09-18 | 2015-12-09 | 中国石油化工股份有限公司 | Steel wire dropping-fishing self-balance setting packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Shubin Inventor after: Chen Haipeng Inventor after: Zhang Zongqin Inventor after: Ji Ping Inventor after: Dong Guangyun Inventor after: Lv Haifeng Inventor after: Wang Chunlin Inventor after: Ying Kewei Inventor after: Wang Shubin, Chen Haipeng, Zhang Zongqin, Ji Ping, Dong Guangyun, Lv Haifeng, Wang Chunlin should be Han Zhonglin Inventor before: Wang Shubin Inventor before: Chen Haipeng Inventor before: Dong Guangyun Inventor before: Ying Kewei Inventor before: Han Zhonglin Inventor before: Zhang Zongqin Inventor before: Ji Ping Inventor before: Li Jianming Inventor before: Wang Peng |
|
| COR | Change of bibliographic data | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |