CN107130937A - HTHP persistence colloid seal - Google Patents
HTHP persistence colloid seal Download PDFInfo
- Publication number
- CN107130937A CN107130937A CN201710519639.4A CN201710519639A CN107130937A CN 107130937 A CN107130937 A CN 107130937A CN 201710519639 A CN201710519639 A CN 201710519639A CN 107130937 A CN107130937 A CN 107130937A
- Authority
- CN
- China
- Prior art keywords
- section
- cylinder
- pipe sleeve
- reinforcing pipe
- hthp
- 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.)
- Granted
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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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
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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)
- Gasket Seals (AREA)
Abstract
The invention discloses HTHP persistence colloid seal, including the cylinder between centrally disposed pipe and sleeve pipe, the cylinder includes interior envelope section, covering section, one end of the interior envelope section is provided with an annular groove, the other end and central tube and connected, one end of the covering section is provided with a mounting head, the other end and casing-contact, and the mounting head is matched with annular groove；Also include reinforcing pipe sleeve, several fixation sheaths, the reinforcing pipe sleeve is enclosed on the outside of cylinder and is interference fitted with cylinder body outer wall, one end of the fixed sheath is stuck in reinforcing pipe sleeve, the other end is stuck in interior envelope section through covering section, and the center line of the fixed sheath and the center line of cylinder are parallel to each other.It is shorter that the present invention solves existing packing element service life, and the problem of replacing easily causes waste of material is carried out to whole packing element during replacing.
Description
Technical field
The present invention relates to oil packer accessory, and in particular to HTHP persistence colloid seal.
Background technology
Packer refers to flexible potted component, and whereby between packing various sizes tubing string and well and tubing string it
Between annular space, and completely cut off payzone, to control to produce (note) liquid, the downhole tool of protection sleeve pipe.Sealed usually in petroleum production engineering
It is used for being layered every device, oil channel is designed with packer, when setting, piston bush is up, and oil channel is opened；After setting,
Upper stressor layer is acted on dummy piston, pushes up packing element, makes deblocking pin from shearing force；During deblocking, by packing element and sleeve pipe
Frictional force cut deblocking pin, piston bush is descending, closes oil channel.Packer reduces Wel packing plug water construction work
Sequence, can conveniently realize no killing well operation without open flow, and two-way can bear high pressure, and service life is long.The conventional leather cup in oil field
Packer is self-sealing.Its leather cup external diameter is more than casing inner diameter, and the close of packer is realized by the interference fit of leather cup and sleeve pipe
Envelope, resistance is big when going into the well, and leather cup is easy to wear and scratches, so as to lose sealing.And the general elastic composite material of packing element of packer
Material is prepared from, and can be divided into pressure type, self-sealing and compound etc., the compression type packer tubling in pressure type is to use most
For extensive one kind；As the crucial elastomeric seal of packer, it is located between oil pipe and pipe sleeve, and axle is born when setting
The deformation of radial direction is produced to load, packing element outer wall produces contact with casing wall, insulates annular space, and seperated layer water injection, acid can be achieved
The techniques such as change, pressure break, the quality of its quality directly influences the height of tool performance on well.
Packing element in actual use, packing element in the presence of axial compressive force, the working face of packing element completely with casing wall phase
Contact axial compression amount reaches maximum, its shoulder formation stress concentration, is easily deformed damage, causes seal failure；So glue
The service life of cylinder is shorter, it is necessary to frequently change.In the prior art, when packing element fails, in the prior art generally to whole glue
Cylinder is changed, and one end that packing element is contacted with central tube is small due to being stressed in whole work process, and intensity is higher, its bullet
Property still in normal range value, still can be used, so carry out changing the waste for easily causing material to whole packing element, very without
Ji environmental protection.
The content of the invention
It is an object of the invention to provide HTHP persistence colloid seal, solve existing packing element service life compared with
It is short, the problem of replacing easily causes waste of material is carried out to whole packing element during replacing.
The present invention is achieved through the following technical solutions：
HTHP persistence colloid seal, including the cylinder between centrally disposed pipe and sleeve pipe, the cylinder bag
Interior envelope section, covering section are included, one end of the interior envelope section is provided with an annular groove, the other end and central tube and connected, the covering
One end of section is provided with a mounting head, the other end and casing-contact, and the mounting head is matched with annular groove；Also include reinforcing
Pipe sleeve, several fixation sheaths, the reinforcing pipe sleeve are enclosed on the outside of cylinder and are interference fitted with cylinder body outer wall, the one of the fixed sheath
End is stuck in reinforcing pipe sleeve, the other end is stuck in interior envelope section through covering section, the center line of the fixed sheath and the center of cylinder
Line is parallel to each other.Further, for prior art problem, the present invention devises a kind of new packing element, whole packing element cylinder
It is made up of two sections of splicings, the interior envelope section that contact with the covering of casing-contact section, one with central tube, the installation on covering section
Head is seated in annular groove；One reinforcing pipe sleeve is set outside cylinder, is connected covering section with interior envelope section using pipe sleeve is strengthened
The gap at place is sealed, and will be strengthened pipe sleeve, covering section, interior envelope section using fixed sheath and be fixed as one.Connect when with casing wall
After tactile covering section abrasion, covering section need to be only replaced, it is shorter to solve existing packing element service life by above structure,
The problem of replacing easily causes waste of material is carried out to whole packing element during replacing.In addition, reinforcing pipe sleeve also enhances the firm of cylinder
Property, further protective effect is played to cylinder, extends the service life of packing element.
It is preferred that, it is additionally provided with a hollow rubber ball, the diameter and covering of the hollow rubber ball in the covering section
Section internal diameter etc. is big.Further, when cylinder bears xial feed, the compression of hollow rubber ball produces radial direction deformation and externally sealed in section
Side wall produces extruding, while strengthening radial compression of the pipe sleeve by liquid, also applies a radial pressure to covering section, at two
In the presence of radial pressure, covering section two ends are moved towards sleeve pipe direction, and that is fitted with sleeve pipe is even closer, improves the present invention
Sealing effectiveness.
Metal tube head is additionally provided with each enhanced tube set, the metal tube head is contacted with interior envelope section.Further, by force
It is a metal tube head to change one end for being contacted with central tube of pipe sleeve, and packing element is towards sleeve pipe when effectively can prevent and limit packer setting
Annular space " protrusion " or " flowing ", it is to avoid entirely also shifted between packing element and center spool, strengthen its anti-destructive ability.
The reinforcing pipe sleeve is made of nitrile rubber.Further, nitrile rubber there is higher temperature tolerance, it is good
Oil resistivity, higher tensile strength and elasticity, are made into reinforcing pipe sleeve, can keep out the impact of most of oil, play Protection glue
The purpose of cylinder；Compared to packing element, the difficulty of processing for strengthening pipe sleeve is lower, and nitrile rubber is easy to shaping and cheap so that reinforcing
Pipe sleeve is replaced very convenient.
The present invention compared with prior art, has the following advantages and advantages：
1st, HTHP persistence colloid seal of the present invention, the cylinder include interior envelope section, covering section, when with casing wall
After the covering section abrasion of contact, covering section need to be only replaced, it is shorter to solve existing packing element service life with this, during replacing
The problem of replacing easily causes waste of material is carried out to whole packing element；Reinforcing pipe sleeve is set not only to be connected covering section with interior envelope section
The gap at place is sealed, and also enhances the rigidity of cylinder, and further protective effect is played to cylinder, extends the use longevity of packing element
Life；
2nd, a hollow rubber ball is additionally provided with HTHP persistence colloid seal of the present invention, the covering section,
Hollow rubber ball and reinforcing pipe sleeve mating reaction so that covering section two ends are moved towards sleeve pipe direction, are fitted more with sleeve pipe
Closely, the sealing between covering section and sleeve pipe is improved.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the interior top view for sealing section of the present invention；
Fig. 3 is the structural representation of covering of the present invention section.
Mark and corresponding parts title in accompanying drawing：
Envelope section in 1-, 2- coverings section, 3- annular grooves, 4- mounting heads, 6- reinforcing pipe sleeves, 7- fixes sheath, 8- hollow rubbers
Ball, 9- metal tube heads.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment
As shown in Figures 1 to 3, HTHP persistence colloid seal of the present invention, including centrally disposed pipe and sleeve pipe it
Between cylinder, the cylinder includes interior envelope section 1, covering section 2, and one end of the interior envelope section 1 is provided with an annular groove 3, another
End is connected with central tube, and one end of the covering section 2 is provided with a mounting head 4, the other end and casing-contact, the mounting head
4 match with annular groove 3；Also include reinforcing pipe sleeve 6, several fix sheaths 7, the reinforcing pipe sleeve 6 be enclosed on the outside of cylinder and with
Cylinder body outer wall is interference fitted, and one end of the fixed sheath 7 is stuck in reinforcing pipe sleeve 6, the other end is stuck in interior envelope section through covering section 2
In 1, the center line of the fixed sheath 7 and the center line of cylinder are parallel to each other.A hollow rubber is additionally provided with the covering section 2
Glueballs 8, the diameter and covering 2 internal diameters of section etc. of the hollow rubber ball 8 is big.Metal tube is additionally provided with each reinforcing pipe sleeve 6
First 9, the metal tube head 9 is contacted with interior envelope section 1.The reinforcing pipe sleeve 6 is made of nitrile rubber.Will using pipe sleeve 6 is strengthened
Covering section 3 and the gap of 1 junction of interior envelope section are sealed, and will strengthen pipe sleeve 6, covering section 2, interior envelope section 1 using fixed sheath 7
It is fixed as one.After the covering section 2 contacted with casing wall is worn and torn, covering section 2 need to be only replaced, is solved by above structure
Existing packing element service life is shorter, and the problem of replacing easily causes waste of material is carried out to whole packing element during replacing.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (4)
1. HTHP persistence colloid seal, including the cylinder between centrally disposed pipe and sleeve pipe, it is characterised in that institute
Stating cylinder includes interior envelope section (1), covering section (2), one end of the interior envelope section (1) be provided with an annular groove (3), the other end with
Central tube is connected, and one end of the covering section (2) is provided with a mounting head (4), the other end and casing-contact, the mounting head
(4) matched with annular groove (3)；Also include reinforcing pipe sleeve (6), several fixation sheaths (7), the reinforcing pipe sleeve (6) is enclosed on cylinder
External side and it is interference fitted with cylinder body outer wall, one end of the fixed sheath (7) is stuck in reinforcing pipe sleeve (6), the other end is through outer
Envelope section (2) is stuck in interior envelope section (1), and the center line of the fixed sheath (7) and the center line of cylinder are parallel to each other.
2. HTHP persistence colloid seal according to claim 1, it is characterised in that in the covering section (2)
A hollow rubber ball (8) is additionally provided with, the diameter and covering section (2) internal diameter etc. of the hollow rubber ball (8) are big.
3. HTHP persistence colloid seal according to claim 1, it is characterised in that in each reinforcing pipe sleeve
(6) metal tube head (9) is additionally provided with, the metal tube head (9) contacts with interior envelope section (1).
4. HTHP persistence colloid seal according to claim 1, it is characterised in that the reinforcing pipe sleeve (6)
It is made of nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519639.4A CN107130937B (en) | 2017-06-30 | 2017-06-30 | High temperature and pressure persistence colloid sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519639.4A CN107130937B (en) | 2017-06-30 | 2017-06-30 | High temperature and pressure persistence colloid sealing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107130937A true CN107130937A (en) | 2017-09-05 |
| CN107130937B CN107130937B (en) | 2019-04-23 |
Family
ID=59735816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710519639.4A Expired - Fee Related CN107130937B (en) | 2017-06-30 | 2017-06-30 | High temperature and pressure persistence colloid sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107130937B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2351543Y (en) * | 1998-07-28 | 1999-12-01 | 江苏省扬中市机械密封件厂 | Packer for oil well heat recovery |
| CN2533257Y (en) * | 2002-02-24 | 2003-01-29 | 庞艳文 | Multipurpose packer for oil and gas field |
| CN201090171Y (en) * | 2007-10-17 | 2008-07-23 | 吉林石油集团有限责任公司 | Ring high-spring high-pressure abrasion-proof glue core |
| US7766089B2 (en) * | 2007-03-16 | 2010-08-03 | Baker Hughes Incorporated | Packer system and method |
| CN102031941A (en) * | 2010-11-19 | 2011-04-27 | 大庆月生禾科技开发有限公司 | Steel protection umbrella type sealer |
| CN106639964A (en) * | 2017-03-10 | 2017-05-10 | 西南石油大学 | High leakproofness shoulder-protrusion resistant compression type packer |
| CN206942724U (en) * | 2017-06-30 | 2018-01-30 | 四川达灿石油设备有限公司 | Suitable for the colloid sealing shroud of HTHP |
-
2017
- 2017-06-30 CN CN201710519639.4A patent/CN107130937B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2351543Y (en) * | 1998-07-28 | 1999-12-01 | 江苏省扬中市机械密封件厂 | Packer for oil well heat recovery |
| CN2533257Y (en) * | 2002-02-24 | 2003-01-29 | 庞艳文 | Multipurpose packer for oil and gas field |
| US7766089B2 (en) * | 2007-03-16 | 2010-08-03 | Baker Hughes Incorporated | Packer system and method |
| CN201090171Y (en) * | 2007-10-17 | 2008-07-23 | 吉林石油集团有限责任公司 | Ring high-spring high-pressure abrasion-proof glue core |
| CN102031941A (en) * | 2010-11-19 | 2011-04-27 | 大庆月生禾科技开发有限公司 | Steel protection umbrella type sealer |
| CN106639964A (en) * | 2017-03-10 | 2017-05-10 | 西南石油大学 | High leakproofness shoulder-protrusion resistant compression type packer |
| CN206942724U (en) * | 2017-06-30 | 2018-01-30 | 四川达灿石油设备有限公司 | Suitable for the colloid sealing shroud of HTHP |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107130937B (en) | 2019-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20190423 Termination date: 20210630 |