CN105672931B - New Type of Hydraulic blowout prevention automatic controller - Google Patents
New Type of Hydraulic blowout prevention automatic controller Download PDFInfo
- Publication number
- CN105672931B CN105672931B CN201610030203.4A CN201610030203A CN105672931B CN 105672931 B CN105672931 B CN 105672931B CN 201610030203 A CN201610030203 A CN 201610030203A CN 105672931 B CN105672931 B CN 105672931B
- Authority
- CN
- China
- Prior art keywords
- piston section
- outer tube
- circumference
- piston
- sealing
- 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.)
- Expired - Fee Related
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/14—Obtaining from a multiple-zone well
Abstract
A kind of new Type of Hydraulic blowout prevention automatic controller, including top connection, outer tube, power transmission shaft, bellows, spring, adjusting rod, sealing shroud, it is characterized in that setting the upper piston section being integrally connected, middle piston section and lower piston section in outer tube, lower piston section threaded connection piston blocks up；Middle piston section, lower piston section circumference on be provided with multiple circular holes；Outer tube top circumference is provided with multiple circular holes, and circular passage is provided with below multiple circular holes；Circular hole on middle piston pitch circle week forms enterprising liquid passage with the circular hole on outer tube circumference, and the circular passage on circular hole and outer tube circumference on lower piston pitch circle week forms lower feed pathway, the lower end of upper piston section composition toroid sealing structure in sealing contact with.The present invention can not only solve the problems, such as sand card, while also have the function that the liquid level for controlling oil well inner fluid so that the Height of oil in oil well is less than well head, prevents fluid from spraying well head, prevents energy waste and environmental pollution.
Description
Technical field
The invention belongs to a kind of blowout control equipment of oil well, particularly a kind of new Type of Hydraulic blowout prevention automatically controls
Device, specifically a kind of oil production by layer down-hole switch.
Background technology
A kind of fluid pressure type blowout prevention automatic controller（Number of patent application is 201510832521.8）In inlet opening closing process
In sand card phenomenon be present, it is that external pressure is big in inlet opening closing process to trace it to its cause, and internal pressure is small, and fluid is with sand
Son enters internal outside sealing surface so that and a part of sand grains is stuck in the seal gap of fluid pressure type blowout prevention automatic controller,
Cause fluid pressure type blowout prevention automatic controller can not be closed in inlet opening, fluid pressure type blowout prevention automatic controller cisco unity malfunction.
The content of the invention
It is an object of the invention to provide a kind of new Type of Hydraulic blowout prevention automatic controller, can not only solve the problems, such as sand card, together
When also have the function that control oil well inner fluid liquid level so that the Height of oil in oil well is less than well head, prevents fluid
Well head is sprayed, energy waste and environmental pollution is prevented, preserves the ecological environment, reduces economic loss.
Technical scheme provided by the invention is as follows：New Type of Hydraulic blowout prevention automatic controller, including top connection, outer tube,
Polytetrafluoro bellows, piston block up, power transmission shaft, bellows, adapter sleeve, spring base, spring, adjusting rod, sealing shroud, adjusting nut,
Tailstock and protective case, it is characterized in that：Set in outer tube and be connected through a screw thread integral upper piston section, middle piston section and lower work
Plug section, lower piston section threaded connection piston block up；Set respectively between outer tube and upper piston section, between outer tube and middle piston section
Sealing, lower sealing are put, two sealings are threaded on outer tube；Middle piston section, lower piston section circumference on be provided with it is multiple
Circular hole；Outer tube top circumference is provided with multiple circular holes, and circular passage is provided with below multiple circular holes；On middle piston pitch circle week
Circular hole forms enterprising liquid passage with the circular hole on outer tube circumference, the ring on circular hole and outer tube circumference on lower piston pitch circle week
Shape passage forms lower feed pathway, and the lower end of upper piston section is provided with conical seal (contact) face, the ring packing linear contact lay structure with lower sealing
Circularize linear sealing structure.
The positive effect of the present invention：Can not only solve the problems, such as sand card, while also have the liquid level of control oil well inner fluid high
The effect of degree so that the Height of oil in oil well is less than well head, prevents fluid from spraying well head, prevents that energy waste and environment are dirty
Dye, preserves the ecological environment, and reduces economic loss.The well-flushing before operation, when flushing fluid fills sleeve pipe, compression exceedes rated pressure
And close, flushing fluid will not enter stratum, then can more efficiently carry out well-flushing, ensure green job execution.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is Fig. 1 E-E sectional views.
Fig. 4 is enlarged drawing at Fig. 1 O.
Embodiment
See Fig. 1-4, new Type of Hydraulic blowout prevention automatic controller is by top connection 1, upper sealing 2, upper piston section 3, middle piston section
4th, lower sealing 5, lower piston section 6, polytetrafluoro bellows 7, piston be stifled 8, power transmission shaft 9, bellows 10, adapter sleeve 11, outer tube 12,
Spring base 13, spring 14, adjusting rod 15, sealing shroud 16, adjusting nut 17, tailstock 18, protective case 19, screw 20, holding screw
21st, holding screw 22 forms；
Concrete structure is as follows：The present invention be number of patent application be 201510832521.8 architecture basics on carry out change
Enter, improved concrete structure is as follows：It is connected and by O-shaped glue with the upper end internal thread of outer tube 12 in the lower end external screw thread of top connection 1
Circle sealing；Set in outer tube 12 and be connected through a screw thread integral upper piston section 3, middle piston section 4 and lower piston section 6, lower work
The threaded connection piston stifled 8 of plug section 6；Set respectively between outer tube 12 and upper piston section 3, between outer tube 12 and middle piston section 4
Sealing 2, lower sealing 5 are put, two sealings are threaded on outer tube 12；Middle piston section 4, lower piston section 6 circumference on open
There are multiple circular holes；The top circumference of outer tube 12 is provided with multiple circular hole J（See Fig. 4）, circular passage Q is provided with below multiple circular holes
（See Fig. 3）；Circular hole on the middle circumference of piston section 4 forms enterprising liquid channel C, lower piston section 6 with the circular hole on the circumference of outer tube 12
The circular passage Q on circular hole and the circumference of outer tube 12 on circumference forms lower feed pathway D；See Fig. 4, the lower end of upper piston section 3
Provided with conical seal (contact) face B, contacted with the ring packing line F of lower sealing 5 and form toroid sealing structure.Patent application is used below
Number be 201510832521.8 structure：Polytetrafluoro bellows 7 is connected with piston stifled 8, and shaft orientation liquid feeding hole is provided with piston stifled 8；
Piston stifled 8 is connected with power transmission shaft 9 by screw 20, and bellows 10 is set with power transmission shaft 9 and forms air chamber, on bellows 10
End is tightly connected with power transmission shaft 9, and the lower end of bellows 10 is fixedly connected with adapter sleeve 11.The external screw thread and overcoat of the upper end of adapter sleeve 11
The internal thread connection of the lower end of pipe 12 and by O-shaped rubber sealing, the internal thread of the lower end of adapter sleeve 11 are outer with the upper end of sealing shroud 16
It is threadedly coupled and by O-shaped rubber sealing, the lower end of power transmission shaft 9 passes through the circular hole of the upper end of adapter sleeve 11 and passes through spiral shell with spring base 13
Line connects, and spring base 13 is located in the lower end endoporus of adapter sleeve 11, and the upper shaft of adjusting rod 15 is plugged in the lower end endoporus of spring base 13,
Spring base 13 on the axle of adjusting rod 15 with being cased with spring 14 and adjusting nut 17；The lower end of sealing shroud 16 is connected through a screw thread tailstock 18
Upper end, and by O-shaped rubber sealing, the lower end of adjusting rod 15 assembling tailstock 18, pass through O-shaped rubber sealing.
Operation principle：
The calculation formula of fluid pressure type blowout prevention automatic controller is as follows：
Oil liquid pressure P2=ρ gh
ρ is oil density, and g is acceleration of gravity,（Generally 9.8）, h is the fluid liquid level in piston（I.e.
From piston bottom end to the height of fluid liquid level）
The pressure value F1 acted on the internal diameter area of section of bellows 10=（P2-P1）W, due to P2>P1, direction are downward.
P1 is ripple tube cavity D air pressure, for the fixed value of demarcation.
W is the internal diameter area of section of bellows 10, is a fixed value.
Spring force F2=KL
K is spring rate, L be spring-compressed away from.
1st, during normal oil producing operation, when fluid liquid level is below or equal to setting value（F1≤F2）When, fluid pressure type is prevented
Spray automatic controller is in normally open, and fluid enters pressure chamber by feed pathway C, D, completes oil producing operation.When fluid liquid level
Highly exceed setting value（Equivalent to F1>F2）When, underground oil liquid pressure P2 is entered in pressure chamber by upper and lower feed pathway C, D, is made
Obtain the piston that upper piston section 3, middle piston section 4, lower piston section 6 form to move down, the conical surface E of upper piston section 3 and lower sealing 5
Loop wire F is contacted, and upper feed liquor channel C is closed, and lower feed pathway D is in micro opening, fluid can drive bottom silt particle to
Upper motion, the surrounding sand grains of polytetrafluoro bellows 7 is taken out of, ensure that bellows motion deformation is stable.When the head of liquid in oil pipe
When continuing increase, lower feed pathway D is closed.Hydraulic oil enters in polytetrafluoro bellows 7, and polytetrafluoro bellows 7 expands.Increase oil
Liquid exploitation rate so that fluid liquid level is below or equal to fluid liquid level setting value（F1≤F2）When, pressure switch
In normally open so that the piston driving piston that upper piston section 3, middle piston section 4, lower piston section 6 form blocks up 8, power transmission shaft 9 and pressed
Contracting spring 14 moves up, and opens feed pathway C, D, and fluid enters pressure chamber R by upper and lower feed pathway C, D, and realization is normally adopted
Oily operation.
2nd, it is necessary to stop recovering the oil during workover treatment, liquid level rises, fluid pressure type blowout prevention automatic controller oil liquid pressure P2
Increase, works as F1>During F2, underground oil liquid pressure P2 by upper and lower feed pathway C, D enter pressure chamber in so that upper piston section 3, in
Piston driving piston that piston section 4, lower piston section 6 form is stifled 8, the compression spring 14 of power transmission shaft 9 moves down, close it is upper and lower enter
Liquid channel C, D, hydraulic cavities volume diminish, and hydraulic oil enters in polytetrafluoro bellows 7, and polytetrafluoro bellows 7 expands.Liquid level
Stop changing.
3rd, during clean-out service, flushing fluid is entered by outer tube 12 so that in oil well liquid level rise, fluid pressure type blowout prevention from
Movement controller oil liquid pressure P2 increases, and works as F1>During F2, underground oil liquid pressure P2 enters pressure chamber by upper and lower feed pathway C, D
In so that piston driving piston that upper piston section 3, middle piston section 4, lower piston section 6 form is stifled 8, the compression spring 14 of power transmission shaft 9 to
Lower movement, close feed pathway C, D so that the impurity in flushing fluid and flushing fluid cannot be introduced into stratum.
Claims (1)
1. a kind of new Type of Hydraulic blowout prevention automatic controller, including top connection, outer tube, polytetrafluoro bellows, piston block up, transmission
Axle, bellows, adapter sleeve, spring base, spring, adjusting rod, sealing shroud, adjusting nut, tailstock, protective case, it is characterized in that：Outside
Set in sleeve pipe and be connected through a screw thread integral upper piston section, middle piston section and lower piston section, lower piston section threaded connection piston
It is stifled；Sealing, lower sealing are set respectively between outer tube and upper piston section, between outer tube and middle piston section, and two sealings are
It is threaded on outer tube；Middle piston section, lower piston section circumference on be provided with multiple circular holes；Outer tube top circumference is provided with more
Individual circular hole, circular passage is provided with below multiple circular holes of outer tube top circumference；Circular hole on middle piston pitch circle week with it is outer
Circular hole on sleeve pipe circumference forms enterprising liquid passage, the circular passage shape on circular hole and outer tube circumference on lower piston pitch circle week
Into lower feed pathway, the lower end of upper piston section is provided with conical seal (contact) face, and toroid is formed with the ring packing linear contact lay of lower sealing
Sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030203.4A CN105672931B (en) | 2016-01-18 | 2016-01-18 | New Type of Hydraulic blowout prevention automatic controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610030203.4A CN105672931B (en) | 2016-01-18 | 2016-01-18 | New Type of Hydraulic blowout prevention automatic controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105672931A CN105672931A (en) | 2016-06-15 |
| CN105672931B true CN105672931B (en) | 2018-02-09 |
Family
ID=56301267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610030203.4A Expired - Fee Related CN105672931B (en) | 2016-01-18 | 2016-01-18 | New Type of Hydraulic blowout prevention automatic controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672931B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223778Y (en) * | 1995-08-29 | 1996-04-03 | 梁福春 | Pressure remote control device being able to repeatedly switch |
| CN2429625Y (en) * | 2000-05-31 | 2001-05-09 | 石油大学(北京) | Pressure control valve |
| CN2639520Y (en) * | 2003-08-15 | 2004-09-08 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Deflector-type gas lift valve |
| CN101860108A (en) * | 2010-05-21 | 2010-10-13 | 大庆石油管理局 | Metal bellow type high-temperature motor protector |
| CN202301943U (en) * | 2011-09-30 | 2012-07-04 | 中国石油化工股份有限公司 | Automatic pressure balance compensation sealing system |
| CN105019852A (en) * | 2015-05-21 | 2015-11-04 | 中国石油化工股份有限公司 | Cable blowout preventer for achieving double-stage hydraulic sealing used for fracturing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK2505773T3 (en) * | 2011-03-30 | 2013-06-10 | Welltec As | Pressure relief device |
-
2016
- 2016-01-18 CN CN201610030203.4A patent/CN105672931B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223778Y (en) * | 1995-08-29 | 1996-04-03 | 梁福春 | Pressure remote control device being able to repeatedly switch |
| CN2429625Y (en) * | 2000-05-31 | 2001-05-09 | 石油大学(北京) | Pressure control valve |
| CN2639520Y (en) * | 2003-08-15 | 2004-09-08 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Deflector-type gas lift valve |
| CN101860108A (en) * | 2010-05-21 | 2010-10-13 | 大庆石油管理局 | Metal bellow type high-temperature motor protector |
| CN202301943U (en) * | 2011-09-30 | 2012-07-04 | 中国石油化工股份有限公司 | Automatic pressure balance compensation sealing system |
| CN105019852A (en) * | 2015-05-21 | 2015-11-04 | 中国石油化工股份有限公司 | Cable blowout preventer for achieving double-stage hydraulic sealing used for fracturing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105672931A (en) | 2016-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180110 Address after: No. 48, Kai Xiang First Street, Dadong District, Shenyang, Liaoning Applicant after: Liaoning Xinhua Instruments Co., Ltd. Address before: 110042 Liaoning Xinhua Instrument Co., Ltd., No. 48, Kai Xiang First Street, Dadong District, Shenyang, Liaoning Applicant before: Liang Weicheng |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180209 Termination date: 20190118 |