CN108559137B - Composition for preparing soluble rubber cylinder, prepared soluble rubber cylinder and application - Google Patents
Composition for preparing soluble rubber cylinder, prepared soluble rubber cylinder and application Download PDFInfo
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- CN108559137B CN108559137B CN201810270559.4A CN201810270559A CN108559137B CN 108559137 B CN108559137 B CN 108559137B CN 201810270559 A CN201810270559 A CN 201810270559A CN 108559137 B CN108559137 B CN 108559137B
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- rubber cylinder
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 50
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 12
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 8
- 239000002025 wood fiber Substances 0.000 claims abstract description 8
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 7
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 7
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 7
- 239000010426 asphalt Substances 0.000 claims abstract description 7
- 239000006229 carbon black Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 7
- 229920001194 natural rubber Polymers 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 229910052802 copper Inorganic materials 0.000 claims 2
- 239000010949 copper Substances 0.000 claims 2
- 229910052749 magnesium Inorganic materials 0.000 claims 2
- 239000011777 magnesium Substances 0.000 claims 2
- 229910052710 silicon Inorganic materials 0.000 claims 2
- 239000010703 silicon Substances 0.000 claims 2
- 239000011701 zinc Substances 0.000 claims 2
- 229910052725 zinc Inorganic materials 0.000 claims 2
- 238000007789 sealing Methods 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- 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
-
- 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a composition for preparing a soluble rubber cylinder, the prepared soluble rubber cylinder and application. The composition comprises 50-70 parts of natural rubber, 20-30 parts of nitrile rubber, 20-30 parts of carbon black, 100-150 parts of soluble metal powder, 20-30 parts of wood fiber, 0.5-2 parts of anti-aging agent and 4-5 parts of asphalt. The soluble rubber cylinder has good sealing performance and elasticity and good solubility, can be widely used for sealing underground tools such as bridge plugs, packers and the like, and can automatically become a plurality of broken particles which can be discharged along with well fluid after being used for a period of time in an underground environment.
Description
Technical Field
The invention belongs to the technical field of rubber sleeve materials, and relates to a soluble rubber sleeve used for downhole tools such as bridge plugs, packers and the like, a composition for preparing the soluble rubber sleeve and application of the soluble rubber sleeve.
Background
Traditional bridging plug and packer in pit generally adopt the rubber packing element of unable soluble rubber material preparation, and the rubber packing element part is left in the pit in the deblocking process, hinders that follow-up construction goes on, influences production.
Disclosure of Invention
Based on the problem that the rubber cylinders of bridge plugs and packers in the prior art cannot be dissolved to influence subsequent construction production, the invention aims to provide a composition for preparing a soluble rubber cylinder; the invention also aims to provide a soluble rubber cylinder prepared by adopting the composition of the soluble rubber cylinder; the soluble rubber cylinder has good sealing performance and elasticity and good solubility, can be widely used for sealing underground tools such as bridge plugs, packers and the like, and can automatically become a plurality of broken particles which can be discharged along with well fluid after being used for a period of time in an underground environment.
The purpose of the invention is realized by the following technical scheme:
in one aspect, the present invention provides a composition for preparing a soluble glue cartridge, comprising, in parts by weight:
in the above composition, preferably, the composition comprises, in parts by weight:
the raw material formulas provided in the composition are all purchased from the market unless otherwise specified; the soluble metal powder is a metal alloy that is soluble in a salt solution (e.g., a KCl solution).
In the above composition, preferably, the particle size of the soluble metal powder is 1 to 100 μm.
In the above composition, the particle size of the soluble metal powder is preferably 15 μm.
In the above composition, preferably, the soluble metal powder is a soluble metal powder developed by this unit, which has already been applied for patent, and the patent numbers are: ZL201510915732.8, the entire contents of which are incorporated herein by reference, is a soluble alloy that is a soluble metal powder in this specification.
On the other hand, the invention also provides a soluble rubber cylinder, and the raw material components for preparing the soluble rubber cylinder comprise:
in another aspect, the present invention further provides a method for preparing a soluble glue cartridge, which uses the above composition to prepare the soluble glue cartridge, comprising the following steps:
putting natural rubber, nitrile rubber, carbon black, soluble metal powder, wood fiber, an anti-aging agent and asphalt into a mixing roll according to the raw material proportion, uniformly mixing, melting by the mixing roll, and then extruding and granulating; then the mixture is placed in an injection molding machine for injection molding to obtain the soluble rubber cylinder.
In the above preparation method, the melting temperature of the mixing roll is preferably 155-165 ℃.
In the above production method, the time for melting the mixer is preferably 6 to 8 hours.
According to the invention, the common rubber comprises natural rubber, nitrile rubber, carbon black, an anti-aging agent and asphalt, the surface of the rubber is smooth and waterproof, and the synergistic effect is mainly that the wood cellulose is added, so that moisture can enter the rubber by virtue of the tissue structure of the wood cellulose, and soluble metal powder can fully absorb water to generate a chemical reaction to form scale accumulation substances. Thus dissolving in water, and finally the agglomerated soluble rubber is quickly decomposed into particles mainly comprising common rubber by taking wood fibers as cracks. The soluble rubber cylinder mainly takes the elastic sealing effect of the rubber component to show better elasticity, and the combined effect of the wood fiber and the soluble metal powder plays the roles of dissolving and splitting.
In another aspect, the invention also provides the soluble glue cylinder prepared by the preparation method.
In yet another aspect, the present invention also provides the use of the dissolvable rubber sleeve described above as a rubber sleeve in bridge plugs and packer downhole tools.
The invention has the beneficial effects that:
the soluble rubber cylinder has good sealing performance and elasticity and good solubility, can be widely used for sealing underground tools such as bridge plugs, packers and the like, and can automatically become a plurality of broken particles which can be discharged along with well fluid after being used for a period of time in an underground environment.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantages of the present invention, but the present invention is not limited to the practical scope of the present invention.
Example 1
The present application provides a composition for preparing a soluble glue cartridge, comprising, in parts by weight:
the embodiment also provides a preparation method of the soluble glue cylinder, which adopts the composition to prepare and comprises the following steps:
putting natural rubber, nitrile rubber, carbon black, soluble metal powder, wood fiber, an anti-aging agent and asphalt into a mixing roll according to the raw material proportion, uniformly mixing, melting by the mixing roll, and then extruding and granulating; the melting temperature is 155-165 ℃, and the melting time is 6-8 h; then the mixture is placed in an injection molding machine for injection molding to obtain the soluble rubber cylinder.
The embodiment also provides the soluble glue cylinder prepared by the preparation method.
The present embodiments also provide for the use of the dissolvable rubber cartridges described above as rubber cartridges in bridge plugs and packer downhole tools.
Example 2
The present application provides a composition for preparing a soluble glue cartridge, comprising, in parts by weight:
the embodiment also provides a preparation method of the soluble glue cylinder, which adopts the composition to prepare and comprises the following steps:
putting natural rubber, nitrile rubber, carbon black, soluble metal powder, wood fiber, an anti-aging agent and asphalt into a mixing roll according to the raw material proportion, uniformly mixing, melting by the mixing roll, and then extruding and granulating; the melting temperature is 155-165 ℃, and the melting time is 6-8 h; then the mixture is placed in an injection molding machine for injection molding to obtain the soluble rubber cylinder.
The embodiment also provides the soluble glue cylinder prepared by the preparation method.
The present embodiments also provide for the use of the dissolvable rubber cartridges described above as rubber cartridges in bridge plugs and packer downhole tools.
Example 3
The present application provides a composition for preparing a soluble glue cartridge, comprising, in parts by weight:
the embodiment also provides a preparation method of the soluble glue cylinder, which adopts the composition to prepare and comprises the following steps:
putting natural rubber, nitrile rubber, carbon black, soluble metal powder, wood fiber, an anti-aging agent and asphalt into a mixing roll according to the raw material proportion, uniformly mixing, melting by the mixing roll, and then extruding and granulating; the melting temperature is 155-165 ℃, and the melting time is 6-8 h; then the mixture is placed in an injection molding machine for injection molding to obtain the soluble rubber cylinder.
The embodiment also provides the soluble glue cylinder prepared by the preparation method.
The present embodiments also provide for the use of the dissolvable rubber cartridges described above as rubber cartridges in bridge plugs and packer downhole tools.
Application example
(1) And (3) elasticity test:
the soluble gum cylinder prepared in example 1 was cut into,the sample block can deform 50 percent (namely, the height is compressed to 5mm) under the pressure of 4 tons, and reaches 99.8 percent of the original height after rebounding (namely, reaches 9.98mm after rebounding), so that the sample block is not cracked and degummed.
(2) And (3) testing the dissolution property:
the soluble rubber cylinder prepared in example 1 is used in a test device, placed in corresponding 90 ℃ and 1% KCl solution, and pressurized at 70MPa, so that the rubber can be decomposed into mud-like substances mixed with fine particles and dissolved products, and the mud-like substances can be dispersed into fine particles after being washed. The soluble packer prepared in example 1 was used in a packer that self-changed to a number of crumbled particles that could be expelled with well fluid after a period of use in a downhole environment. Compared with the prior art, the rubber does not decompose into particles at all in the same simulated underground environment test. But also maintains intact rubber properties.
In conclusion, the soluble rubber cylinder has good sealing performance and elasticity and good solubility, can be widely used for sealing underground tools such as bridge plugs, packers and the like, and can automatically become a plurality of broken particles which can be discharged along with well fluid after being used for a period of time in an underground environment.
Claims (9)
1. A composition for preparing a soluble glue cartridge, characterized in that the composition comprises, in parts by weight:
the soluble metal powder comprises, by mass, 0.5-8.0 wt% of aluminum, 0.5-6.0 wt% of silicon, 0.4-5.0 wt% of copper, 0.8-6.0 wt% of tin, 0.3-4.0 wt% of zinc and the balance of magnesium; the particle size is 1 to 100 μm.
2. The composition of claim 1, wherein the composition comprises, in parts by weight:
3. the composition of claim 1, wherein: the particle size of the soluble metal powder is 15 μm.
4. A soluble glue cylinder is characterized in that: the raw material components for preparing the soluble rubber cylinder comprise the following components in parts by weight:
the soluble metal powder comprises, by mass, 0.5-8.0 wt% of aluminum, 0.5-6.0 wt% of silicon, 0.4-5.0 wt% of copper, 0.8-6.0 wt% of tin, 0.3-4.0 wt% of zinc and the balance of magnesium; the particle size is 1 to 100 μm.
5. A method of making a dissolvable gel cartridge using the composition of any of claims 1-3, comprising the steps of:
putting natural rubber, nitrile rubber, carbon black, soluble metal powder, wood fiber, an anti-aging agent and asphalt into a mixing roll according to the raw material proportion, uniformly mixing, melting by the mixing roll, and then extruding and granulating; then the mixture is placed in an injection molding machine for injection molding to obtain the soluble rubber cylinder.
6. The method of claim 5, wherein: the melting temperature of the mixing roll is 155-165 ℃.
7. The method of claim 5, wherein: the melting time of the mixing roll is 6-8 h.
8. The soluble glue cartridge prepared by the preparation method of any one of claims 5 to 7.
9. Use of the dissolvable rubber sleeve of claim 8 as a rubber sleeve in bridge plugs and packer downhole tools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810270559.4A CN108559137B (en) | 2018-03-29 | 2018-03-29 | Composition for preparing soluble rubber cylinder, prepared soluble rubber cylinder and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810270559.4A CN108559137B (en) | 2018-03-29 | 2018-03-29 | Composition for preparing soluble rubber cylinder, prepared soluble rubber cylinder and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108559137A CN108559137A (en) | 2018-09-21 |
| CN108559137B true CN108559137B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810270559.4A Active CN108559137B (en) | 2018-03-29 | 2018-03-29 | Composition for preparing soluble rubber cylinder, prepared soluble rubber cylinder and application |
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| CN (1) | CN108559137B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454111A (en) * | 2019-07-18 | 2019-11-15 | 中国石油天然气股份有限公司 | A kind of metal containment structure and oil/gas well set reconciliation encapsulation method |
| CN110511446B (en) * | 2019-08-28 | 2022-05-03 | 海南省先进天然橡胶复合材料工程研究中心有限公司 | Method for improving dissolution speed of rubber in asphalt |
| CN111087734B (en) * | 2019-12-31 | 2023-10-20 | 雅安万利橡塑密封技术有限责任公司 | Low-temperature soluble bridge plug rubber cylinder, structure and preparation process |
| CN114106494A (en) * | 2020-09-01 | 2022-03-01 | 中国石油化工股份有限公司 | Composition and application thereof in preparation of open hole packer and/or soluble bridge plug |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632196B (en) * | 2014-12-12 | 2017-05-10 | 中国石油天然气股份有限公司 | Horizontal well section testing method by adopting soluble rubber sleeve packer |
| CN105001620B (en) * | 2015-07-10 | 2018-03-16 | 北京中科金腾科技有限公司 | It is a kind of be used to making drilling well bridging plug packing element from lysotype functional material and preparation method thereof |
| CN105385918B (en) * | 2015-12-10 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of dissolvable alloy and its preparation method and application |
| CN107417994A (en) * | 2017-09-06 | 2017-12-01 | 南通凤凰橡胶制品有限公司 | A kind of oil resistant rubber |
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2018
- 2018-03-29 CN CN201810270559.4A patent/CN108559137B/en active Active
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| CN108559137A (en) | 2018-09-21 |
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