CN105625980B - Un-throttled sets Y344 type fracturing packer - Google Patents
Un-throttled sets Y344 type fracturing packer Download PDFInfo
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- CN105625980B CN105625980B CN201510259178.2A CN201510259178A CN105625980B CN 105625980 B CN105625980 B CN 105625980B CN 201510259178 A CN201510259178 A CN 201510259178A CN 105625980 B CN105625980 B CN 105625980B
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- center pipe
- spring
- sliding block
- air chamber
- power sliding
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Abstract
Un-throttled sets Y344 type fracturing packer, containing top connection, packing element, its center pipe, power sliding block, spring center pipe, spring, Spring driving shell, hydraulic cavities, air chamber, sealing ring, seal gas chamber and the hydraulic cavities connecting central canal, their inside and outside footpath keeps equal, identical with the area that ensures interaction force.In work progress, between air chamber and hydraulic cavities, there is pressure reduction, its pressure reduction is to realize the power source that packing element sets.It set mode, only with pressure correlation in tubing string, be not subject to fluid flow, flow rate effect in tubing string inside and outside differential pressure and tubing string, be not required to sanding machine and throttle to realize setting.Therefore, this packer can provide possibility for sanding machine huge discharge sandblasting.When the logical sand amount of maximum diameter realized by packer itself, because of the increase of latus rectum, reduce tool interior sand-laden fluid rate of flow of fluid, alleviate the abrasion of the assembly in tubing string, extend the service life of instrument, improve safety in utilization, improve work efficiency and construction quality.
Description
Technical field
The present invention relates to oil drilling and r eoovery machine equipment, particularly a kind of un-throttled sets Y344 type fracturing packer.
Background technology
Since reform and opening-up, national economy obtains rapid growth, and " scientific and technical innovation, autonomous innovation " has become domestic work at present
The main flow of industry development, China's industry just progressively develops to the direction of intensive style, energy-saving and emission-reduction, low-carbon (LC).Oil is China's modern times work
" blood " and the economic lifeline of industry development, is a kind of important strategic resource, the stability and security of impact national energy.Oil is opened
In adopting, oil well through long-term production, the organic precipitation of reservoir fluid and shaking out, necessarily cause reservoir pore space near shaft bottom
Blocking, causes porosity and permeability to decline, affects oil well yield.Therefore exploit the later stage in oil well, frequently with pressure break
Acidifying is processed, to change low yield state.Need in fracture acidizing operating tool string with packer, related stratum to be carried out up and down
Packing, carrys out the corresponding oil reservoir of fracture acidizing.In multiple fracturing tubing string, now frequently with expanding K344 packer, by construction
Setting, this kind of mode shortcoming that sets is to form tubing string inside and outside differential pressure the hydraulic pressure difference existing and oil, sleeve pipe between in tubing string,
It is accomplished by the sanding machine below packer to be throttled, limits operating tool string sandblasting amount, sacrifice efficiency of construction, and aggravate to spray
Wearing and tearing in sand device aperture, increases the load that ground is pumped equipment.Simultaneously when transferring tubing string easily because borehole pressure fluctuation generation need not
Set, occur friction to damage.In order to solve the above problems, scientific and technical personnel's constantly research and discovery of R＆D institution, research and development
New packer is although technically make some progress, but remains in practice and not yet to overcome
Technical barrier.
Content of the invention
It is an object of the invention to overcoming above deficiency, there is provided un-throttled sets Y344 type fracturing packer.This packing
The hydraulic cavities having seal gas chamber inside device and connecting central canal, its air chamber keeps equal with the internal-and external diameter of hydraulic cavities.Construction
During, the pressure reduction that exists between air chamber and hydraulic cavities, set offer power for packing element.Achieve the condition of setting, only
With pressure correlation in tubing string, be not subject to tubing string inside and outside differential pressure and liquid in pipe flow velocity, flow effect, thus be not required to sanding machine throttling with
Offer sets pressure reduction, thus, this packer provides possibility for sanding machine huge discharge sandblasting, and the whole operating tool string making is realized
The logical sand amount of big orifice, because of the increase of latus rectum, reduces the frictional resistance of tool interior, decreases each assembly in tubing string
Abrasion, extends the service life of instrument, improves safety in utilization, improve work efficiency and construction quality.
The technical solution adopted for the present invention to solve the technical problems is：Un-throttled sets Y344 type fracturing packer, bag
Include top connection, packing element, its center pipe, power sliding block, spring center pipe, spring, Spring driving shell, hydraulic cavities, air chamber,
Sealing ring it is characterised in that：
Top connection includes integrally formed first annular projection, and its end is connected to its center pipe, three groups of packing elements and spacer ring
It is set between first annular projection and the top end face of its center pipe；Its center pipe outside power slide block, under connect in spring
Heart pipe；Spring center pipe includes integrally formed second annular protrusion；Described power sliding block is slidably set in the second annular
Between raised side and packing element lower surface；
Air chamber is referred to as by the annular seal space that its center pipe, power sliding block are constituted；Its center pipe includes limited step, institute
State limited step to be located in air chamber；
The cavity being made up of power sliding block, its center pipe, spring center pipe is hydraulic cavities；
Connect Spring driving shell under power sliding block, be provided with spring, slide block between Spring driving shell and spring center pipe
It is provided with three groups of sealing rings between central canal, spring center pipe, power sliding block.
The present invention adopt know-why be：Formed using machinery and Pneumatic hydraulic principle design, with air and water this two
Plant the difference of the physical property of medium, the i.e. universal pilot performance of water and low compression ratio, and the high compression ratio physical characteristics of air.
The slot that liquid passes through on its center pipe injects hydraulic cavities, when liquid supercharging in central canal, between hydraulic cavities and air chamber
Produce pressure reduction, air chamber is compressed with spring stress, power sliding block, to air chamber one side shifting, promotes packing element simultaneously, and packing element is subject to
Axial force extruding radial expands, the annular space between closing oil pipe and sleeve pipe, plays packing effect；When in central canal, liquid is let out
During pressure, power sliding block is subject to the opposition forced resetting of spring and air chamber, completes to unseal.
The invention has the beneficial effects as follows：This packer to be formed using the pressure reduction between air chamber and hydraulic cavities and to set generation
Advantage have three aspects.One is, this packer, using simple, convenient, pressurize and sets, pressure release unseals.Because setting condition
Only with pressure correlation in tubing string, it is easy to control.The spring that this is externally provided with can increase air chamber bearing capacity, forces after also having pressure release
The function of deblocking, is that smoothly taking-up provides guarantee to tool tubular column.Two are, achievable operating tool string sediment outflow amount maximizes, this envelope
Every device set be not required to sanding machine throttling set pressure reduction to provide, improve sediment transport efficiency.Three are, packing element sets effect and stablizes well, adopts
Set mode with compression, effect in theory is just better than expanding packing element.Pretension unseals the utilization of spring, it is to avoid going into the well
Cheng Zhong, the fluctuation of down-hole pressure leads to packing element unnecessary setting, and causes the damage of packing element.In addition, in its center
Pipe is provided with limited step, it is to avoid bottom hole pressure difference is excessive to cause power sliding block excessively mobile, prevents packing element by excessive condensation, causes
Fatigue follows the string or ruptures, and impact sets effect.
Figure of description
It is presented herein below and in conjunction with the accompanying drawings and embodiments the present invention is further described：
Fig. 1 is the front view that non-throttling sets Y344 type fracturing packer；
Fig. 2 is the full sectional view that non-throttling sets Y344 type fracturing packer.
Fig. 1, in 2：1 top connection, 2 packing elements, 3 its center pipes, 4 power sliding blocks, 5 spring center pipes, 6 springs, 7 springs drive
Dynamic shell, 8 hydraulic cavities, 9 air chambers, 10 sealing rings.
Specific embodiment
Fig. 1, in 2, containing top connection 1, packing element 2, its center pipe 3, power sliding block 4, spring center pipe 5, spring 6, bullet
Spring cover of driver 7, hydraulic cavities 8, air chamber 9, sealing ring 10, are sequentially provided with three groups of packing elements 2 and spacer ring, its end outside top connection 1
Be connected to its center pipe 3, its center pipe 3 outside power slide block 4, under connect spring center pipe 5, slided by its center pipe 5, power
The annular seal space that block 4 is constituted is referred to as air chamber 9, and the cavity being made up of power sliding block 4, its center pipe 3, spring center pipe 5 is liquid
Pressure chamber 8, connects Spring driving shell, is provided with spring 6 between Spring driving shell 7 and spring center pipe 5 under power sliding block, three groups
Located between its center pipe 3, spring center pipe 5, power sliding block 4, composition un-throttled sets Y344 type pressure break envelope to sealing ring 10
Every device.
This packer is formed using machinery and Pneumatic hydraulic principle design, with the physical property of air and water both media
Difference, i.e. the universal pilot performance of water and low compression ratio, and air expansion performance, liquid pass through its center pipe 3 on
Slot is covered with hydraulic cavities, when liquid supercharging in central canal, produces pressure reduction, air chamber 9 and bullet between hydraulic cavities 8 and air chamber 9
Spring 6 forced compression, power sliding block 4, to air chamber one side shifting, promotes packing element 2 simultaneously, and packing element 2 is subject to axial force extruding radial swollen
Swollen, between closing oil pipe and sleeve pipe annular space, plays packing effect；When liquid pressure release in central canal, power sliding block 4 is subject to
To the opposition forced resetting of spring 6 and air chamber 9, complete to unseal.
In structure design, this packer setting condition is to be formed by the pressure reduction between air chamber and hydraulic cavities to set,
Throttling as K344 packer sets, and K344 sets the area control that need to pass through sanding machine sand jet outlet, produces current limliting, and produces
Pressure reduction between oil, sleeve pipe, then realize setting, congenital sediment outflow amount of cannot realizing maximizes；As Y341 packer machinery sets,
Auxiliary in Y341 structure sets part, upper propose deblocking when need larger power, there is the risk that cannot unseal, such as in multilayer pipe
Use in post, deblocking power needed for it is quite big it is impossible to the risk of deblocking increases severely, and does not typically adopt in multiple fracturing tubing string.With
When pretension unseal the utilization of spring, it is to avoid during going into the well, the fluctuation of down-hole pressure leads to packing element unnecessary setting,
And cause the damage of packing element.In addition, being provided with limited step on its center pipe, it is to avoid bottom hole pressure difference is excessive to cause power sliding block
Excessive mobile, prevent packing element by excessive condensation, cause fatigue to follow the string or rupture, impact sets effect.
In test uses, throttling packer operating tool string enters most 6 cubic meters per minute of formation flow rate；Using this packing
Device, enters stratum liquid up to discharge capacities more than 10 cubic meters per minute, sand-laden fluid body is when entering stratum by sanding machine simultaneously
Flow velocity only have the 3/5 of former speed, mitigate to the destruction of operating tool string and the abrasion of sand jet outlet, reduce potential safety hazard, improve
Equipment dependability and work efficiency.
Claims (1)
1. un-throttled sets Y344 type fracturing packer, including top connection (1), packing element (2), its center pipe (3), power sliding block
(4), spring center pipe (5), spring (6), Spring driving shell (7), hydraulic cavities (8), air chamber (9), sealing ring (10), it is special
Levy and be：
Top connection (1) includes integrally formed first annular projection, and its end is connected to its center pipe (3), three groups of packing elements with every
Ring set is located between first annular projection and the top end face of its center pipe；Its center pipe outside power slide block (4), under connect bullet
Spring central canal (5)；Spring center pipe (5) includes integrally formed second annular protrusion；Described power sliding block (4) slidably covers
It is located between the second annular protrusion side and packing element lower surface；
The annular seal space being made up of its center pipe, power sliding block is referred to as air chamber (9)；Its center pipe (3) includes limited step,
Described limited step is located in air chamber；
The cavity being made up of power sliding block, its center pipe, spring center pipe is hydraulic cavities (8)；
Connect Spring driving shell (7) under power sliding block, between Spring driving shell (7) and spring center pipe (5), be provided with spring,
It is provided with three groups of sealing rings (10) between its center pipe, spring center pipe, power sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259178.2A CN105625980B (en) | 2015-05-16 | 2015-05-16 | Un-throttled sets Y344 type fracturing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259178.2A CN105625980B (en) | 2015-05-16 | 2015-05-16 | Un-throttled sets Y344 type fracturing packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105625980A CN105625980A (en) | 2016-06-01 |
| CN105625980B true CN105625980B (en) | 2017-03-01 |
Family
ID=56041271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510259178.2A Expired - Fee Related CN105625980B (en) | 2015-05-16 | 2015-05-16 | Un-throttled sets Y344 type fracturing packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN105625980B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060906B (en) * | 2017-11-22 | 2020-04-28 | 盐城他山石液压机械有限公司 | Non-throttling fracturing packer for high-pressure oil-gas well |
| CN110578492B (en) * | 2019-11-11 | 2020-02-07 | 中国石油化工股份有限公司胜利油田分公司石油工程技术研究院 | But expanding packer of pressure boost setting and application method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2432333Y (en) * | 2000-06-28 | 2001-05-30 | 曹允良 | Flushing packer |
| CN2690580Y (en) * | 2003-12-24 | 2005-04-06 | 尹婷 | Outflow pressure leaking type sand-proof holder packer |
| CN2799851Y (en) * | 2005-06-08 | 2006-07-26 | 尹旭东 | Running-pulling free internal-circulating sand-control packer |
| CN2869301Y (en) * | 2006-03-09 | 2007-02-14 | 大庆油田有限责任公司 | Compression type low-pressure sealing-test packer |
| US7552768B2 (en) * | 2006-07-26 | 2009-06-30 | Baker Hughes Incorporated | Swelling packer element with enhanced sealing force |
| CN201412110Y (en) * | 2009-06-05 | 2010-02-24 | 中国石油天然气股份有限公司 | Compulsive self-unsealing fracturing packer |
| US8397802B2 (en) * | 2010-06-07 | 2013-03-19 | Weatherford/Lamb, Inc. | Swellable packer slip mechanism |
| CN202360057U (en) * | 2011-10-18 | 2012-08-01 | 中国石油化工股份有限公司 | Leather cup packer |
| CN203347736U (en) * | 2013-07-18 | 2013-12-18 | 陈成才 | Water-injection packer capable of being subjected to deblocking step by step |
| CN203742532U (en) * | 2014-03-15 | 2014-07-30 | 盐城市畅海精密机械有限公司 | Novel fracturing packer |
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2015
- 2015-05-16 CN CN201510259178.2A patent/CN105625980B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN105625980A (en) | 2016-06-01 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20181010 Address after: 224000 51 new salt road, Xinyang Economic Zone, Ting Hu District, Yancheng City, Jiangsu Patentee after: YANCHENG HUAYA PETROLEUM MACHINERY MANUFACTURING CO.,LTD. Address before: 224043 No. 2 lane, Wolong residential committee, Dagang Town, Yancheng City, Jiangsu Province, 3 Patentee before: YANCHENG CHANGHAI PML PRECISION MECHANISM LTD. |
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Effective date of registration: 20220208 Address after: 224022 No. 18, Hongxing Road, dazhonghu Town, Yandu District, Yancheng City, Jiangsu Province Patentee after: YANCHENG CHANGHAI PML PRECISION MECHANISM LTD. Address before: 224000 51 new salt road, Xinyang Economic Zone, Ting Hu District, Yancheng City, Jiangsu Patentee before: YANCHENG HUAYA PETROLEUM MACHINERY MANUFACTURING CO.,LTD. |
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| 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: 20170301 |