CN104612636B - Oil well multiple-zone production underground automatic layer-changing device - Google Patents
Oil well multiple-zone production underground automatic layer-changing device Download PDFInfo
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- CN104612636B CN104612636B CN201510043632.0A CN201510043632A CN104612636B CN 104612636 B CN104612636 B CN 104612636B CN 201510043632 A CN201510043632 A CN 201510043632A CN 104612636 B CN104612636 B CN 104612636B
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- spool
- layer
- screen
- spring
- inner screen
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000003129 oil well Substances 0.000 title claims abstract description 14
- 238000009826 distribution Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 8
- 239000012530 fluid Substances 0.000 claims 3
- 239000002356 single layer Substances 0.000 claims 1
- 239000003208 petroleum Substances 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000013475 authorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004575 stone Substances 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
- 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
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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)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The present invention relates to field of petroleum exploitation, the in particular to a kind of device of oil well multiple-zone production underground automatic layer-changing.The present invention separates using pressure as controling parameter and controls the current intelligence of the petroleum of adjacent two layers, it is characterized by: being made of outer screen, inner screen, balancing spring, locking device, spool, axle sleeve, constrictor, spring-loaded plunger, spring, cavity and plunger etc., inner screen and outer screen form concentric screen, it is in an open state when inner screen is located at lower gear, is in off state when positioned at upper gear.The advantages that its installation number of the invention can be corresponding and unrestricted with position with the quantity of oil reservoir, it can be achieved that being not necessarily to the automation control artificially manipulated with position, and expansion oil recovery flow reduces oil recovery energy consumption, has structure simple, reliable performance, significant effect.
Description
Technical field
The present invention relates to field of petroleum exploitation, the in particular to a kind of device of oil well multiple-zone production underground automatic layer-changing.
Background technique
Oil well is across a kind of mode that oil commingling is that current most oilfield exploitations generally use, however due to each oil reservoir pressure
Power, permeability, oil property and moisture content have differences, and cause to interfere with each other between each oil reservoir, so that oil well production complicates.
In the prior art, " fixed tubular column changes layer and adopts Chinese patent application (publication number CN1389639A, publication date on January 8th, 2003)
Oil well lower tubular column and its implementing process " discloses a kind of down-hole string and its implementing process that layering production may be implemented, mainly
Be seam change switch is turned on or off to casing annulus pressurization by ground, the disadvantage is that: 1. need using ground pump truck group
Annular pressure is promoted to be higher than and arrives borehole pressure, heavy workload, cost is very high, and the requirement to casing tube is very high.2. due to
Formation pressure is fluctuation, therefore the pressure value that should finally reach in annular space is also difficult to determine.3. the tubing string is only able to achieve two
Oil reservoir separate zone production, it is not applicable for multiple reservoir exploitations.In Chinese patent application, (Authorization Notice No. CN2761835, authorization are public
Accuse March 1 2006 day) in " pipe controlling hydraulic layer changing switch " it is necessary that being just able to achieve with ground pump truck to oil jacket annulus pressurization
Layer function is changed, workload is equally very big.
Summary of the invention
The purpose of the present invention is a kind of offer structure is simple, the oil well multiple-zone production underground automatic layer-changing device of reliable operation,
Overcome the shortcomings of current layering oil production technology.Automatic layer-changing device relies on the difference of each oil reservoir oil product pressure, realizes that underground multilayer is adopted
The automatic layer-changing process of oil.
The technical scheme is that oil well multiple-zone production underground automatic layer-changing device, this changes a layer device and is placed on fixed tubular column
With deep position same at well-case perforating, separate and control the circulation feelings of the petroleum of adjacent two layers using pressure as controling parameter
Condition, it is characterised in that: by outer screen, inner screen, balancing spring, locking device, spool, axle sleeve, constrictor, spring stack
Plug, spring, cavity and plunger composition, inner screen and outer screen form concentric screen, when inner screen is located at lower gear
It is in an open state, is in off state when positioned at upper gear.
Locking device is directed toward axis along the distribution of oil pipe radial symmetric, head between outer screen and axle sleeve, by two
Spring-loaded plunger constitute, spring-loaded plunger is made of spring, plunger and cavity, and the stop collar on locking device and spool top cooperates,
Spool can be made to lock at gear.
Between spool top and locking device, model can need to select balancing spring according to specific production；Axle sleeve
Positioned at locking device lower part, it is equipped with 4 circular through holes being symmetric against the top.
Spool is located in axle sleeve, inner hollow, and lower part is equipped with 2 rows totally 8 symmetrical circular through holes, lower oil reservoir stone
Thus oil can flow into；Respectively as the pressure bearing face of upper and lower oil reservoir, spool upper end is equipped with stop collar, limit for spool shoulder and bottom
The stroke of spool processed, and make spool that there is fixed gear up and down, spool and inner screen are rigid connection, and movement can band
Dynamic inner screen movement.
Constrictor is located at the bottom end for changing layer device, is used as lower layer's oil valve door switch with spool cooperation.
The present invention has the effect that compared with prior art
The function of realizing multiple zone exploitation automatic layer-changing exploitation, pressure and the production capacity rule for solving different oil reservoirs are different
The problem that each layer yield and moisture content when problem and oil commingling cannot be distinguished with measure is interfered with each other between caused oil reservoir.
Pressure is carried out to change layer exploitation as controling parameter, realizes the automation control without artificially manipulating.
Two types valve is separately designed and is combined with, to realize that the oil circuit exploited to different layers oil reservoir is unified, to make
Obtain oil recovery maximum flow.
Using locking device and spring-loaded plunger, commutation process is set only to increase to above preset value in pressure at both sides difference laggard
Row also makes spool commutation process become more rapidly, to effectively prevent spool in the stop of equilbrium position.
By the way of balancing spring and spool and inner screen balanced, by designing device of spring stiffness coefficient,
It realizes and layer exploitation is targetedly changed to a certain layer.
Using the movement of spool under pressure, the function of automatic exploitation high pressure reservoir, the lamination of effective use ground are realized
Power natural energy, so that oil recovery energy consumption reduces.
Detailed description of the invention
Fig. 1 is the structural principle profilograph of invention.
Fig. 2 is the schematic diagram of locking device.
Fig. 3 is the schematic diagram of spring-loaded plunger.
Fig. 4 is to change layer whole longitudinal section structural drawing of device one embodiment.
Fig. 5 is to change layer concentric screen cross-sectional view of device one embodiment.
Fig. 6 is the whole longitudinal section structural drawing for changing second embodiment of layer device.
Fig. 7 is the concentric screen cross-sectional view for changing second embodiment of layer device.
Fig. 8 is the installation site figure of invention.
In Fig. 1,1. outer screens, 2. inner screens, 3. balancing springs, 4. locking devices, 5. spools, 6. axle sleeves, 7. limits
Casing after flow, 8. oil pipes, 9. perforations.
In Fig. 2,10. spring-loaded plungers.
In Fig. 3,11. springs, 12. cavitys, 13. plungers.
In Fig. 8, a layer device, 17. screen casings are changed in 14. fixed tubular columns, 15. packers, 16..
Specific embodiment
It is next with reference to the accompanying drawing that the invention will be further described:
Referring to Fig. 1, oil well multiple-zone production underground automatic layer-changing device, from top to bottom by outer screen (1), inner screen (2),
Balancing spring (3), locking device (4), spool (5), axle sleeve (6) and constrictor (7) composition.Layer device is changed in fixed tubular column (8)
Position it is as shown in Figure 1.Changing layer device is up and down fixed tubular column (8), and G.I.H reaches simultaneously with two sections of fixed tubular columns (8)
Designated position.As shown in figure 8, fixed tubular column (14) is fixed on casing (9) by packer (15), the bottom of fixed tubular column is
Screen casing (17) or check valve change a layer device (16) and are installed between adjacent two packer, and the quantity that can be installed and position can
With corresponding and unrestricted with position with the quantity of oil reservoir.
Locking device (4) as shown in Figure 2, it is internal containing there are two symmetrical spring-loaded plunger (10), spring-loaded plungers
(10) it is made of spring (11), cavity (12) and plunger (13), the spring-loaded plunger (10) of different model can be used, make to change a layer mistake
Journey carries out after spool (5) pressure at both sides difference is higher than some value.
According to different production environments, the balancing spring (3) of different model can be used, realize have a certain layer and be directed to
Exploitation: balancing spring (3) stiffness factor is then easier to exploit upper oil reservoir greatly, and stiffness factor is small to be then easier to exploit lower oil reservoir.
In embodiment one shown in Fig. 4, changes the spool (5) of layer device and inner screen (2) are in lower gear, in spool (5)
Portion is locked device (4) locking, and spool (5) bottom end blocks the metering hole of constrictor (7), and lower oil reservoir petroleum can not continue up logical
It crosses this and changes a layer device.As shown in figure 5, inner screen (2) is in lower gear, concentric screen is in the open state, and upper oil reservoir petroleum obtains
To go out to enter oil pipe from concentric screen.Only upper oil reservoir is produced in this embodiment, and pressure constantly reduces, and lower oil reservoir is in
Pressure recovery state, pressure constantly increase.When upper oil reservoir petroleum acts on the pressure and the effect of lower oil reservoir petroleum on spool (5) top
When the difference of the holding power of spool (5) bottom end is greater than set numerical value, spool (5) can be detached from the constraint of locking device (4) to
Lower movement and the device that is locked again (4) locking, reach lower gear, complete the process of automatic layer-changing exploitation.
In embodiment two shown in Fig. 6, changes the spool (5) of layer device and inner screen (2) are in upper gear, in spool (5)
Portion be locked device (4) locking, spool (5) bottom end and the metering hole of constrictor (7) are at regular intervals, lower oil reservoir petroleum be able to from
A layer device is changed upwardly through this at metering hole.As shown in fig. 7, inner screen (2) is in upper gear, concentric screen, which is in, closes shape
State, upper oil reservoir petroleum can not go out from concentric screen enters oil pipe.Only lower oil reservoir is produced in this embodiment, and pressure is continuous
It reduces, upper oil reservoir is in pressure recovery state, and pressure constantly increases.Instantly oil reservoir petroleum acts on the support of spool (5) bottom end
When the difference that power and upper oil reservoir petroleum act on the pressure on spool (5) top is higher than set numerical value, spool (5) can be detached from locking
The constraint of device (4) moves upwards and the device that is locked again (4) is locked, and reaches gear, completes the mistake of automatic layer-changing exploitation
Journey.
Claims (4)
1. oil well multiple-zone production underground automatic layer-changing device, it is characterised in that: by outer screen (1), inner screen (2), equilibrium bomb
Spring (3), locking device (4), spool (5), axle sleeve (6), constrictor (7), spring-loaded plunger (10), spring (11), cavity (12) and
Plunger (13) composition, inner screen (2) and outer screen (1) form concentric screen, are when inner screen (2) is located at lower gear
Opening state is in off state when positioned at upper gear, and constrictor (7) is located at the bottom end for changing layer device, under being used as with spool (5) cooperation
Layer oil valve door switch, has metering hole on constrictor (7), and changing layer device is up and down fixed tubular column, this changes layer device at any time
Only single layer fluid is allowed to change a layer device by this, when inner screen (2) is located at lower gear, top fluid passes sequentially through outer screen
(1), inner screen (2) changes a layer device by this；When inner screen (2) is located at upper gear, lower layer's fluid passes sequentially through constrictor
(7), axle sleeve (6), spool (5) change a layer device by this.
2. oil well multiple-zone production according to claim 1 underground automatic layer-changing device, it is characterised in that: locking device (4) position
Between outer screen (1) and axle sleeve (6), the spring-loaded plunger of axis is directed toward along the distribution of oil pipe radial symmetric, head by two
(10) it constitutes, spring-loaded plunger (10) is made of spring (11), plunger (13) and cavity (12), on locking device (4) and spool (5)
The stop collar in portion cooperates, and spool (5) can be made to lock at gear.
3. oil well multiple-zone production according to claim 1 underground automatic layer-changing device, it is characterised in that: balancing spring (3) position
Between spool (5) top and locking device (4), model can need to select according to specific production；Axle sleeve (6) is located at locking dress
(4) lower part is set, is equipped with 4 circular through holes being symmetric against the top.
4. oil well multiple-zone production according to claim 1 underground automatic layer-changing device, it is characterised in that: spool (5) is located at axis
It covering in (6), inner hollow, lower part is equipped with 2 rows totally 8 symmetrical circular through holes, and spool (5) upper end is equipped with stop collar,
Spool (5) and inner screen (2) are rigid connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510043632.0A CN104612636B (en) | 2015-01-22 | 2015-01-22 | Oil well multiple-zone production underground automatic layer-changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510043632.0A CN104612636B (en) | 2015-01-22 | 2015-01-22 | Oil well multiple-zone production underground automatic layer-changing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104612636A CN104612636A (en) | 2015-05-13 |
| CN104612636B true CN104612636B (en) | 2019-03-01 |
Family
ID=53147261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510043632.0A Active CN104612636B (en) | 2015-01-22 | 2015-01-22 | Oil well multiple-zone production underground automatic layer-changing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104612636B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451730Y (en) * | 2000-09-29 | 2001-10-03 | 胜利石油管理局采油工艺研究院 | Hydraulic seam change switch |
| CN1141491C (en) * | 2000-12-12 | 2004-03-10 | 中国石化胜利油田有限公司采油工艺研究院 | Stratum-changing production method and technical pipe column |
| CN1389639A (en) * | 2002-07-12 | 2003-01-08 | 中国石化胜利油田有限公司采油工艺研究院 | Immobile well cylinder pile for stratum-shifting oil exploitation and its implementation |
| US20040129428A1 (en) * | 2002-12-20 | 2004-07-08 | Kelley Terry Earl | Plunger lift deliquefying system for increased recovery from oil and gas wells |
| CN201176866Y (en) * | 2008-04-17 | 2009-01-07 | 大庆油田有限责任公司 | Fixed pressure production mandrel |
| CN201794563U (en) * | 2010-07-29 | 2011-04-13 | 大庆油田有限责任公司 | Selective production string optionally adjustable within four layers |
| CN204591237U (en) * | 2015-01-22 | 2015-08-26 | 中国石油大学(华东) | Oil well multiple-zone production down-hole automatic layer-changing device |
-
2015
- 2015-01-22 CN CN201510043632.0A patent/CN104612636B/en active Active
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| Publication number | Publication date |
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| CN104612636A (en) | 2015-05-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231214 Address after: 266000 No. 66 Changjiang West Road, Qingdao economic and Technological Development Zone, Shandong Patentee after: CHINA University OF PETROLEUM (EAST CHINA) Patentee after: SHANDONG ZHAOXIN OIL TOOLS CO.,LTD. Patentee after: DONGYING ZHAOXIN INDUSTRY AND TRADE CO.,LTD. Address before: 266000 No. 66 Changjiang West Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: CHINA University OF PETROLEUM (EAST CHINA) |
|
| CI03 | Correction of invention patent | ||
| CI03 | Correction of invention patent |
Correction item: Patentee|Address|Patentee Correct: China University of Petroleum (East China)|266000 No. 66 Changjiang West Road, Qingdao economic and Technological Development Zone, Shandong False: China University of Petroleum (East China)|266000 No. 66 Changjiang West Road, Qingdao economic and Technological Development Zone, Shandong|Shandong Zhaoxin Petroleum Tools Co., Ltd. Dongying Zhaoxin Industry and Trade Co., Ltd. Number: 52-01 Volume: 39 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240105 Address after: No.37 Qilianshan Road, Dongying District, Dongying City, Shandong Province 257000 Patentee after: SHANDONG ZHAOXIN OIL TOOLS CO.,LTD. Patentee after: DONGYING ZHAOXIN INDUSTRY AND TRADE CO.,LTD. Address before: 266000 No. 66 Changjiang West Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: CHINA University OF PETROLEUM (EAST CHINA) |