CN107100580A - Long rubber barrel and rubber formula thereof - Google Patents
Long rubber barrel and rubber formula thereof Download PDFInfo
- Publication number
- CN107100580A CN107100580A CN201710217478.3A CN201710217478A CN107100580A CN 107100580 A CN107100580 A CN 107100580A CN 201710217478 A CN201710217478 A CN 201710217478A CN 107100580 A CN107100580 A CN 107100580A
- Authority
- CN
- China
- Prior art keywords
- packing element
- long
- rubber
- head
- pressure
- 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
- 229920001971 elastomer Polymers 0.000 title abstract description 8
- 238000012856 packing Methods 0.000 claims abstract description 50
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 6
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 4
- 238000004073 vulcanization Methods 0.000 claims description 12
- 238000010058 rubber compounding Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- 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
- E21B33/127—Packers; Plugs with inflatable sleeve
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a long rubber barrel. The problem that the deblocking degree of difficulty is big has mainly been solved to current long packing element packer. The method is characterized in that: liner tube (3) are equipped with in packing element main part (1), and liner tube (3) both ends are vulcanizes head (4), vulcanizes head (4) and liner tube (3) whole pressure-bearing. The invention also provides a rubber formula of the long rubber cylinder, which comprises the following components in percentage by weight: 92-95% of nitrile rubber and 5-8% of neoprene. The long rubber sleeve has good elasticity and durability, and can improve the deblocking performance of the long rubber sleeve packer.
Description
Technical field
The present invention relates to oil extraction in oil field field of engineering technology, more particularly to a kind of long packing element type and its rubber compounding.
Background technology
In oil extraction in oil field field of engineering technology, according to the achievement in research of fine geology, thick oil pay inner structure interface is utilized
Performance is oozed in vertical resistance, and mechanically it is blocked, and invalid note in thick oil pay can be controlled to adopt circulation, realized in In Thick Reservoirss
Subdivision is taped the latent power.And the packing element length of conventional packer is generally 0.3m, influenceed by tubing string allotment error, it is impossible to which thickness is less than
0.5m small interlayer and structural interface implements closure.For this problem, the long packing element type for reaching 1 meter using packing element length is insulated
Device, eliminates the influence that tubing string allocates error, and the small interlayer and structural interface that 0.5m is less than to thickness implement effective closure, realize layer
Interior closure and subdivision, make the object that subdivision is taped the latent power be extended to by interlayer in layer.But it is general because the packing element length of packer is longer
4 times of logical packer, cause to pull out envelope load height, deblocking difficulty is big.
The content of the invention
The technical problems to be solved by the invention are to overcome existing long packing element packer deblocking present in background technology difficult
The problem of spending big, and a kind of long packing element type is provided, the long packing element type, elasticity, good endurance, it is possible to increase the deblocking of long packing element packer
Performance.The present invention also provides a kind of rubber compounding of long packing element type.
The present invention, which solves its problem, to be reached by following technical solution：A kind of long packing element type, including packing element main body, it is described
Packing element body interior is equipped with bushing pipe, and bushing pipe two ends are vulcanization head, vulcanization head and the overall pressure-bearing of bushing pipe.
The external diameter of the packing element main body 1 is 110~114mm；The packing element main body 1 sets up two layers of pressure-bearing gauze 2.
Present invention also offers a kind of rubber compounding of long packing element type, its component and proportioning are as follows by weight percentage：Butyronitrile
Rubber 92~95%, neoprene 5~8%.
In the formula of long packing element type, by acrylonitrile and polymerizing butadiene into nitrile rubber, neoprene is added as assistant agent, makes glue
Cylinder has excellent oil resistivity, wearability, resistance to ag(e)ing and heat resistance, adds assistant agent to improve the elastic and antifatigue of packing element
Property.Neoprene is containing the larger chlorine atom of polarized, and crystallinity is high, with stronger adhesive property and larger cohesive strength, bullet
Property, good endurance.After the two mixture, tensile strength is higher by more than 20 percent than original formulation, and it is small that anti-aging intensity is higher by 16
When more than.
In order to ensure smoothly to be reclaimed during packing element deblocking, on the basis of formulation optimization, the external diameter of packing element is reduced by 114mm
To 110mm.After packing element external diameter reduces, inwall is thinning, reduces bearing strength.For this problem, in order to improve holding for packing element
Performance is pressed, on the basis of former pressure-bearing gauze, increases by two layers of pressure-bearing gauze；Meanwhile, keep original " vulcanization head-bushing pipe " one
Design type, i.e., the bushing pipe in packing element indoor design, bushing pipe two ends are vulcanization head, vulcanization head and the overall pressure-bearing of bushing pipe, prevent height
Vulcanize head during pressure to come off.
It is of the invention to be had the advantages that compared with above-mentioned background technology：The long packing element type is due to using said structure
And rubber compounding, tensile strength is higher by more than 20 percent than original formulation, and anti-aging intensity is higher by more than 16 hours；In order to carry
The load performance of high packing element, on the basis of former pressure-bearing gauze, increases by two layers of pressure-bearing gauze；Meanwhile, keep original " vulcanization
Head-bushing pipe " Integral design pattern, i.e., the bushing pipe in packing element indoor design, bushing pipe two ends are vulcanization head, and vulcanization head is overall with bushing pipe
Pressure-bearing, prevents that vulcanizing head during high pressure comes off.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is the experimental provision structural representation of the present invention.
In figure：1- packing element main bodys, 2- pressure-bearing gauzes, 3- bushing pipes, 4- vulcanization heads, 5- suppresses stifled, and 6- packing element testpieces, 7- is held
Pressure is stifled, 8- sheaths, 9- flanges.
Embodiment：
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of long packing element type, including packing element main body 1, the inside of packing element main body 1 are equipped with bushing pipe 3, bushing pipe 3
Two ends are vulcanization first 4, vulcanization first 4 and the overall pressure-bearing of bushing pipe 3；The external diameter of packing element main body 1 is 110~114mm；Packing element main body 1 increases
Plus two layers of pressure-bearing gauze 2.The formula of the long packing element type, its component and proportioning are as follows by weight percentage：Nitrile rubber 92~95%,
Neoprene 5~8%.
The long packing element type technical performance is tested using experimental provision as shown in Figure 2.
Experimental rig includes suppressing stifled 5, and described to suppress the stifled upper end of 5 connection packing element testpieces 6, the connection of the lower end of testpieces 6 is held
Pressure stifled 7；The sheath 8 connects and composes pressure-bearing device by screw thread and flange 9；During experiment, stifled 5, testpieces 6, pressure-bearing stifled 7 is suppressed
It is put into the pressure-bearing device being made up of sheath 8, flange 9.
Checkout procedure：Suppress head and suppress 20MPa, voltage stabilizing 1 hour is non-leakage, and packer setting performance is qualified；After pressure release, to
Outer lifting top connection, deblocking pin 4t is cut, and removing seal for packer completes experiment.
Experimental result see the table below 1.Above-mentioned experiment shows that packer setting pressure reaches 20.48MPa, more than packer
Injection pressure (15MPa) when setting, meets packer setting requirement；Pulling force 38kN is unsealed, envelope is pulled out less than routine work machine
Load (300kN), it is ensured that deblocking is smooth；Solution is honored as a queen, and packing element external diameter is that 109.9mm, packing element length are 1m, and packing element is full without breakage
Sufficient use requirement.
The laboratory experiment data of table 1
Claims (4)
1. a kind of long packing element type, including packing element main body（1）, it is characterised in that：The packing element main body（1）Inside is equipped with bushing pipe（3）, lining
Pipe（3）Two ends are vulcanization head（4）, vulcanize head（4）With bushing pipe（3）Overall pressure-bearing.
2. a kind of long packing element type according to claim 1, it is characterised in that：The packing element main body（1）External diameter for 110~
114mm。
3. a kind of long packing element type according to claim 1 or 2, it is characterised in that：The packing element main body（1）Set up two layers of pressure-bearing
Gauze（2）.
4. the rubber compounding for the long packing element type described in claim 1, it is characterised in that：Its component and proportioning are by weight percentage
It is as follows：Nitrile rubber 92~95%, neoprene 5~8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217478.3A CN107100580A (en) | 2017-04-05 | 2017-04-05 | Long rubber barrel and rubber formula thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217478.3A CN107100580A (en) | 2017-04-05 | 2017-04-05 | Long rubber barrel and rubber formula thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107100580A true CN107100580A (en) | 2017-08-29 |
Family
ID=59675260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710217478.3A Pending CN107100580A (en) | 2017-04-05 | 2017-04-05 | Long rubber barrel and rubber formula thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107100580A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027525Y (en) * | 2007-05-17 | 2008-02-27 | 廉军 | Novel glue barrel |
| CN202081856U (en) * | 2011-06-09 | 2011-12-21 | 曲哲 | Rubber drum of expanding packer |
| CN103306635A (en) * | 2013-06-28 | 2013-09-18 | 中国石油天然气股份有限公司 | Steel skeleton rubber tube |
| CN104481449A (en) * | 2014-11-14 | 2015-04-01 | 中国石油天然气股份有限公司 | Composite packer rubber cylinder and preparation method thereof |
| US20160076335A1 (en) * | 2014-08-19 | 2016-03-17 | Ncs Multistage Inc. | Apparatus and method for treating a reservoir using re-closeable sleeves |
-
2017
- 2017-04-05 CN CN201710217478.3A patent/CN107100580A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027525Y (en) * | 2007-05-17 | 2008-02-27 | 廉军 | Novel glue barrel |
| CN202081856U (en) * | 2011-06-09 | 2011-12-21 | 曲哲 | Rubber drum of expanding packer |
| CN103306635A (en) * | 2013-06-28 | 2013-09-18 | 中国石油天然气股份有限公司 | Steel skeleton rubber tube |
| US20160076335A1 (en) * | 2014-08-19 | 2016-03-17 | Ncs Multistage Inc. | Apparatus and method for treating a reservoir using re-closeable sleeves |
| CN104481449A (en) * | 2014-11-14 | 2015-04-01 | 中国石油天然气股份有限公司 | Composite packer rubber cylinder and preparation method thereof |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170829 |