CN106244125B - Stuck releasing and dissolving agent for underground bridge plug/packer stuck rubber part - Google Patents
Stuck releasing and dissolving agent for underground bridge plug/packer stuck rubber part Download PDFInfo
- Publication number
- CN106244125B CN106244125B CN201610740429.3A CN201610740429A CN106244125B CN 106244125 B CN106244125 B CN 106244125B CN 201610740429 A CN201610740429 A CN 201610740429A CN 106244125 B CN106244125 B CN 106244125B
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- Prior art keywords
- packer
- bridge plug
- stuck
- rubber
- solvent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/02—Spotting, i.e. using additives for releasing a stuck drill
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a stuck freeing and desolventizing agent for a stuck fixing rubber part of an underground bridge plug/packer, which is prepared by mixing the following components in percentage by volume: 25% -35% of ethyl acetate, 25% -35% of acetone and 35% -45% of n-propanol, and the preparation method is simple and suitable for field operation, and finally the blockage of the bridge plug or the packer is removed and the well bore is smoothly taken out.
Description
Technical field
The invention belongs to oil-gas field development field, especially a kind of unfreezing for consolidating stuck glue part for underground bridge plug/packer
Disappear solvent.
Technical background
In oil gas (water) well production process, it is layered, is insulated, is blocked usually using the tool of packer, bridge plug class
Reservoir and pit shaft, the main component of sealing function are exactly rubber product.If it is longer to enter the well time for bridge plug and packer in well,
Under pit shaft high temperature and high pressure environment, cartridge can occur to be swollen aging, hardness rising, intensity and flexibility decrease, need
When releasing closure, the tool that tends to occur, which unseals difficult, packing element (part), can not shrink, draw situations such as anti-glue part, cause tubing string in well
It is interior to be fixed by damaged rubber parts, cause bridge plug or packer card resistance that can not normally unseal salvaging, meanwhile, in lifting activity repeatedly
Tubing string so that the abrasion of glue part and when unfreezing, and will cause that oil column fatigue is impaired, and accident easy to form increases pit shaft complex situations
Risk substantially prolongs construction period.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of unfreezings for consolidating stuck glue part for underground bridge plug/packer
Disappear solvent, under conditions of the solvent that disappears comes into full contact with rubber parts, can effectively soften dissolving rubber part in 24 hours, and to gold
Belong to corrosion-free injury.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: one kind for underground bridge plug/packer it is solid
The unfreezing of stuck glue part disappears solvent, by mixing by the following component of volume percentage:
Ethyl acetate 25%-35%
Acetone 25%-35%
Normal propyl alcohol 35%-45%
It is preferred that by being mixed by the following component of volume percentage:
Ethyl acetate 30%
Acetone 30%
Normal propyl alcohol 40%.
The beneficial effects of the present invention are: preparation method is simple, it is suitble to execute-in-place, the final card for releasing bridge plug or packer
It hinders and smoothly plays out pit shaft.
Specific embodiment
Invention is further described in detail With reference to embodiment:
The of the invention unfreezing for consolidate stuck glue part for underground bridge plug/packer disappears solvent, by pressing under volume percentage
Column component mixes:
Ethyl acetate 25%-35%
Acetone 25%-35%
Normal propyl alcohol 35%-45%
It is preferred that by being mixed by the following component of volume percentage:
Ethyl acetate 30%
Acetone 30%
Normal propyl alcohol 40%.
Ethyl acetate, acetone, normal propyl alcohol have different types of rubber respectively prominent as organic solvent in the present invention
Dissolution advantage, such as: ethyl acetate to nitrile rubber have preferable dissolubility, nitrile rubber is room temperature bridge plug and packer rubber
The raw material of bucket, the functional group in nitrile rubber are C=N, and the functional group in ethyl acetate is C=O, C=N and C=O chemical bond body
It is identical, is covalent bond, and be all a σ key and a pi bond in double bond, C=N chemical bond lengths is 127pm, C=O chemistry
Key length is 123pm, and both (data are derived from " chemistry-structure of matter and property (taking as an elective course) ") chemical bond lengths are extremely close, official
Energy unity structure is quite similar, and according to the similar principle that mixes, interaction force between the two is maximum.Therefore ethyl acetate can be effective
Dissolve nitrile rubber.
Acetone has preferable dissolubility to fluorubber, and fluorubber is the raw material of high temperature bridge plug and packer rubber bucket, fluorine rubber
Glue has the chemical stability of height, is one kind that medium-resistance is best in current all elastic body.The 26 resistance to stones of type fluorubber
Oil base oils, di esters oil, silicon ethers oil, silicic acid class oil, inorganic acid resistance, the organic and inorganic solvent of resistance to majority, drug etc., only
Intolerant to low molecular ketone, ether, ester, not amine-resistant, ammonia, hydrofluoric acid, chlorosulfonic acid, phosphoric acid class hydraulic oil.Positive acetone is as low molecule ketone
Class solvent, C=O chemical bond lengths are 123pm, and functional group's C-F chemical bond lengths of fluorubber are 133pm, and (data are derived from
" chemistry-structure of matter and property (taking as an elective course) ") both chemical bond lengths it is extremely close, in low molecule ketones solvent, acetone pair
The solvability of fluorubber is best.
Normal propyl alcohol has preferable dissolubility to other type rubber other than the nitrile rubber of high acrylonitrile content；It is all kinds of
The chemical functional groups key length of rubber is typically distributed across between 120-190pm, and functional group is C-O in normal propyl alcohol, chemical bond distance
Degree is 143pm, although cannot have dissolution advantage outstanding for certain rubber, its general applicability is stronger.
Primary raw material --- nitrile rubber of three kinds of mixed mixed solvents of organic solvent to bridge plug and packer rubber bucket
With the targeted solvability of fluorubber, and to other kinds of traditional rubber part have than broad applicability, respectively have
Dissolution phenomena between solvent and rubber meets the similar principle that mixes, and mutual between organic solvent molecule and rubber macromolecule
Interaction force between active force and rubber macromolecule is close, continuous dissolution and leaching with solvent from rubber surface to deep layer
Enter, finally dissolves rubber softening.
Preparation method: at normal temperature by ethyl acetate, acetone, normal propyl alcohol is mixed evenly can be prepared by.
Under conditions of the solvent that disappears comes into full contact with rubber parts, which can effectively soften dissolving rubber in 24 hours
Part, and to the corrosion-free injury of metal.
Using the underground bridge plug/packer rubber part disappear solvent to rubber parts carry out softening dissolution field conduct method,
Specifically includes the following steps:
1) solvent usage that disappears is generally 0.5m3, bridge plug or envelope through oil pipe are recycled to by the ground pumping-in equipment solvent that will disappear
Every the top of device；
2) tubing string, movable bridge plug or packer are constantly lifted within the scope of oil pipe tensile strength, allow solvent and the rubber parts of disappearing
It comes into full contact with；
3) closing well reacts 24 hours, allows ablation agent sufficiently to react with rubber parts, finally softens rubber parts and dissolve；
4) tubing string is lifted within the scope of oil pipe tensile strength, makes bridge plug or the smooth unfreezing of packer, and act pit shaft.
Embodiment 1
150L ethyl acetate, 150L acetone, 200L normal propyl alcohol are configured to mixed solution at normal temperature, which can be
Effectively soften dissolving rubber part in 24 hours, and to the corrosion-free injury of metal.
The solvent that disappears of bridge plug/packer rubber part made from embodiment is used for the soft of underground bridge plug or packer sealing glue bucket
Change decompose specific steps are as follows:
1) the prepared solvent land used face pumping-in equipment that disappears is subjected to circulation pumping through oil pipe
2) calculate displacement fluid volume, after the solvent that disappears all is pumped into oil pipe, start pump note displacement fluid, displacement fluid volume with
It is calculation basis at the top of bridge plug or packer that the solvent that disappears is flow to just
3) disappear solvent via at the top of bridge plug or packer fishing head or circulating valve flow at the top of bridge plug or packer after stop
Pump
4) tubing string, movable bridge plug or packer are constantly lifted within the scope of oil pipe tensile strength, allow solvent and the rubber parts of disappearing
It comes into full contact with
5) closing well reacts 24 hours
6) oil pipe is above mentioned, bridge plug or packer are acted pit shaft.
Embodiment 2
125L ethyl acetate, 150L acetone, 225L normal propyl alcohol are configured to mixed solution at normal temperature, which can be
Effectively soften dissolving rubber part in 24 hours, and to the corrosion-free injury of metal.
Embodiment 3
150L ethyl acetate, 175L acetone, 175L normal propyl alcohol are configured to mixed solution at normal temperature, which can be
Effectively soften dissolving rubber part in 24 hours, and to the corrosion-free injury of metal.
The processing method of embodiment 2,3 is no longer described with embodiment 1.
In conclusion the contents of the present invention are not limited in the above embodiments, the knowledgeable people in same area can
Can propose other embodiments easily within technological guidance's thought of the invention, but this embodiment is included in this hair
Within the scope of bright.
Claims (2)
- The solvent 1. a kind of unfreezing for consolidating stuck glue part for underground bridge plug/packer disappears, which is characterized in that by pressing volume percentage Following component mix:Ethyl acetate 25%-35%Acetone 25%-35%Normal propyl alcohol 35%-45%.
- The solvent 2. unfreezing according to claim 1 for consolidating stuck glue part for underground bridge plug/packer disappears, which is characterized in that By being mixed by the following component of volume percentage:Ethyl acetate 30%Acetone 30%Normal propyl alcohol 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740429.3A CN106244125B (en) | 2016-08-26 | 2016-08-26 | Stuck releasing and dissolving agent for underground bridge plug/packer stuck rubber part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740429.3A CN106244125B (en) | 2016-08-26 | 2016-08-26 | Stuck releasing and dissolving agent for underground bridge plug/packer stuck rubber part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106244125A CN106244125A (en) | 2016-12-21 |
| CN106244125B true CN106244125B (en) | 2019-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610740429.3A Active CN106244125B (en) | 2016-08-26 | 2016-08-26 | Stuck releasing and dissolving agent for underground bridge plug/packer stuck rubber part |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021977B (en) * | 2019-11-22 | 2022-05-10 | 中国石油天然气股份有限公司 | Method for quickly removing soluble bridge plug in case of blocking |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004016903A1 (en) * | 2002-08-19 | 2004-02-26 | Baker Hughes Incorporated | High expansion sealing device with leak path closures |
| CN101435318A (en) * | 2008-12-17 | 2009-05-20 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Non-drill cementing well method and pipe column |
| CN102287161A (en) * | 2011-07-25 | 2011-12-21 | 上海道氟化工科技有限公司 | Compression packer rubber cylinder, and preparation method and application thereof |
| CN104632196A (en) * | 2014-12-12 | 2015-05-20 | 中国石油天然气股份有限公司 | Method for realizing horizontal well sectional testing by adopting soluble rubber sleeve packer |
| CN204782918U (en) * | 2015-07-07 | 2015-11-18 | 吉林市旭峰激光科技有限责任公司 | Dissolubility bridging plug based on rubber sleeve |
-
2016
- 2016-08-26 CN CN201610740429.3A patent/CN106244125B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004016903A1 (en) * | 2002-08-19 | 2004-02-26 | Baker Hughes Incorporated | High expansion sealing device with leak path closures |
| CN101435318A (en) * | 2008-12-17 | 2009-05-20 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Non-drill cementing well method and pipe column |
| CN102287161A (en) * | 2011-07-25 | 2011-12-21 | 上海道氟化工科技有限公司 | Compression packer rubber cylinder, and preparation method and application thereof |
| CN104632196A (en) * | 2014-12-12 | 2015-05-20 | 中国石油天然气股份有限公司 | Method for realizing horizontal well sectional testing by adopting soluble rubber sleeve packer |
| CN204782918U (en) * | 2015-07-07 | 2015-11-18 | 吉林市旭峰激光科技有限责任公司 | Dissolubility bridging plug based on rubber sleeve |
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| Publication number | Publication date |
|---|---|
| CN106244125A (en) | 2016-12-21 |
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Effective date of registration: 20211028 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106, Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |