CN107227146A - A kind of composite oil well unblocking agent - Google Patents
A kind of composite oil well unblocking agent Download PDFInfo
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- CN107227146A CN107227146A CN201710140893.3A CN201710140893A CN107227146A CN 107227146 A CN107227146 A CN 107227146A CN 201710140893 A CN201710140893 A CN 201710140893A CN 107227146 A CN107227146 A CN 107227146A
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- chlorine dioxide
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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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
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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
- C09K2208/32—Anticorrosion additives
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
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Abstract
The invention discloses a kind of composite oil well unblocking agent, it includes component A and B component, and the mass ratio of component A and B component is 2:1, component A is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）70~90, potassium acetate 10~30, pyridine hydrochloride 5~12, prodan 10~20, B component are made up of the raw material of following parts by weight：APG 4~10, water 90~110, boric acid 10~20, malic acid 15~30, ammonium nitrate 4~10.The present invention can avoid activating chlorine dioxide the construction trouble and potential safety hazard brought on well, and chlorine dioxide can be made to play a role at low concentrations realize the effect of de-plugging of well.
Description
Technical field
The present invention relates to a kind of composite oil well unblocking agent, belong to oilfield chemical auxiliary technical field.
Background technology
At present, during oil well carries out the chemical displacement of reservoir oil, it is common to use various high molecular polymers, such as partial hydrolysis poly- third
Acrylamide, xanthans, natural polymer and its modified product, but they are in shaft bottom, particularly in oil reservoir near wellbore zone, due to rock
Layer makes part infusion be trapped in the hole of rock stratum, forms different journeys to effects such as absorption, the trapping bridge formations of high molecular polymer
The blocking of degree, this blocking produces totally unfavorable influence to the chemical displacement of reservoir oil, and injection pressure can be caused to increase substantially, liquid is injected
Amount is greatly lowered, and influences crude output.Most of present oil well carries out acidifying unblocking and injection increasing using mud acid, hydrochloric acid, can only
The permeability impairment that most of inorganic matter is caused to stratum is released, but to bacterium, high molecular polymer, sulfate reducing bacteria and sulphur
Change the ferrous blocking plugging removal effect caused unobvious.Removing to bacterium, sulfate reducing bacteria etc. is mainly killed using Non-oxidized
Microbial inoculum carries out sterilization de-plugging, has season by salt, aldehydes, sulfur-containing compound and its compound, ketone etc., non-oxidative bactericide is made
Slow with the time, bacterium is also easy to produce the resistance to the action of a drug, and poor effect causes many oil wells to be scrapped.
In recent years, a kind of new strong oxidizer chlorine dioxide composite blockage relieving agent gradually starts to be applied to oil field organic matter solution
Stifled field, it has the characteristics of function admirable, environmental protection etc., can fast degradation high molecular polymer, killing bacterium, removing sulphur
Compound is blocked, and reaches the purpose of removal of bridge formation.Both at home and abroad always research chlorine dioxide be applied to oil field de-plugging technique, not into
It is ripe, ordinary preparation and and technique may all bring explosion danger and strong and that human respiratory tract is injured serious to tubing corrosive agent
Defect, and plug removal radius is smaller.If injection well bottom after chlorine dioxide preparation is directly activated on ground, because concentration is too high,
Smell, which is choked very much, certain injury is caused to surface personnel, and well casing can be caused because chlorine dioxide concentration is too high by being directly injected into
Corrosion, and be possible to set off an explosion, if chlorine dioxide concentration is too low, the possibility of blast is not had, and operation is also very safe, but
DeGrain, therefore chlorine dioxide compound deplugging technology can not realize large-scale application always.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of composite oil well unblocking agent, and it can avoid activation zone on well
The construction trouble and potential safety hazard come, and chlorine dioxide can be made to play a role at low concentrations, realize the mesh of de-plugging of well
's.
Alleged problem of the invention is solved by following technical scheme：A kind of composite oil well unblocking agent, it include component A and
B component, the mass ratio of the component A and B component is 2:1, the component A is made up of the raw material of following parts by weight：Stable state
ClO 2 solution（2%）70~90, potassium acetate 10~30, pyridine hydrochloride 5~12, prodan 10~20, the B component
It is made up of the raw material of following parts by weight：APG 4~10, water 90~110, boric acid 10~20, malic acid 15~30, nitric acid
Ammonium 4~10.
It is preferred that, the composite oil well unblocking agent, it includes component A and B component, the mass ratio of the component A and B component
For 2:1, the component A is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）75~85, potassium acetate 15
~25, pyridine hydrochloride 7~10, prodan 12~18, the B component are made up of the raw material of following parts by weight：Alkyl sugar
Glycosides 6~9, water 95~105, boric acid 12~18, malic acid 20~27, ammonium nitrate 5~8.
It is preferred that, the composite oil well unblocking agent, it includes component A and B component, the mass ratio of the component A and B component
For 2:1, the component A is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）80th, potassium acetate 20, pyrrole
Thiamine hydrochloride 9, prodan 15, the B component are made up of the raw material of following parts by weight：APG 8, water 100, boric acid
15th, malic acid 24, ammonium nitrate 6.
The present invention is from propellant of the stable-state chlorine dioxide solution as chlorine dioxide, stable chlorine dioxide disinfectant and sub- chlorine
Acid sodium solution is compared, and stability is high, store safe, easy to use, and relative price is cheap, each in stable-state chlorine dioxide solution
Quasi-molecule form is different from the molecular conformation in sodium chlorite solution, and use is more reasonable, safety, it is adaptable to oil well bottom environment,
There is potential safety hazard when being contacted with crude oil solution in sodium chlorite solution.In component A and B component mixing injection oil well bottom,
Temperature is raised, and mixed solution can activated a large amount of hydrogen ions, hydrogen ion and stable-state chlorine dioxide solution reaction generation titanium dioxide
Chlorine, reaches the purpose to de-plugging of well.
Present invention adds potassium acetate, sylvite can play a part of clay stabilizer, and acetate can be complexed in stratum
Iron ion, viscosity reduction, plugging removal effect that can be to synergy chlorine dioxide, and the injection rate of material is greatly reduced, reduce
Pollution to bottom.
Present invention adds pyridine hydrochloride and prodan, pyridine hydrochloride and prodan can be killed in oil reservoir
Various mushrooms, and when component A and B component are mixed, hydrofluoric acid and hydrochloric acid can be produced, being capable of the substantial amounts of inorganic blocking of corrosion
Thing, greatly reduces the consumption of stable-state chlorine dioxide solution, also improves the penetration capacity of chlorine dioxide, enhances titanium dioxide
The de-plugging ability of chlorine.
Present invention adds APG, APG can strengthen the penetrating power of chlorine dioxide, and can emulsify
Some tampers in stratum, can also play the cleaning action to oil reservoir.
Present invention adds malic acid, malic acid can dissolve some calcium salts, will not form precipitation again and block.
Hydrogen ion is ionized out present invention adds boric acid, under boric acid normal temperature seldom, it is ensured that mixed in component A and B component
The safety before oil reservoir is injected into, is injected into after oil reservoir, temperature rise, boric acid can ionize out a large amount of hydrogen ions, with stable state dioxy
Change solutions of chlorine reaction generation chlorine dioxide.
Present invention adds ammonium nitrate, ammonium nitrate as special corrosion inhibitor, reduce construction in oxidant and acid to construction
The corrosion of equipment.
The present invention solves the defect of current de-plugging of well technology, can avoid activation zone comes on well construction trouble and pacify
Full hidden danger, and chlorine dioxide can be made to play a role at low concentrations realize the purpose of de-plugging of well, have it is boundless should
With prospect and economic benefit.
The present invention has significant effect, is in particular in：（1）The composite blockage relieving agent that the present invention is developed can be good at
The slow control formula release of chlorine dioxide is realized, the waste of chlorine dioxide is reduced, has saved cost；（2）What the present invention was developed answers
Closing de-plugging agent has good anti-corrosion effects；（3）The composite blockage relieving agent situ configuration process that the present invention is developed is simple, and scene need not
Other inorganic agents are added, construction is simple；（4）The composite blockage relieving agent that the present invention is developed can either de-plugging, oil well can be carried out again
Cleaning.
Embodiment
Embodiment 1
A kind of composite oil well unblocking agent, it includes component A and B component, and the mass ratio of the component A and B component is 2:1, the A
Component is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）70th, potassium acetate 10, pyridine hydrochloride 12,
Prodan 20, the B component is made up of the raw material of following parts by weight：APG 4, water 90, boric acid 20, malic acid 30,
Ammonium nitrate 10.
Embodiment 2
A kind of composite oil well unblocking agent, it includes component A and B component, and the mass ratio of the component A and B component is 2:1, the A
Component is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）85th, potassium acetate 25, pyridine hydrochloride 7, fluorine
Sodium metasilicate 12, the B component is made up of the raw material of following parts by weight：APG 9, water 105, boric acid 18, malic acid 20, nitre
Sour ammonium 5.
Embodiment 3
A kind of composite oil well unblocking agent, it includes component A and B component, and the mass ratio of the component A and B component is 2:1, the A
Component is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）80th, potassium acetate 20, pyridine hydrochloride 9, fluorine
Sodium metasilicate 15, the B component is made up of the raw material of following parts by weight：APG 8, water 100, boric acid 15, malic acid 24, nitre
Sour ammonium 6.
Embodiment 4
A kind of composite oil well unblocking agent, it includes component A and B component, and the mass ratio of the component A and B component is 2:1, the A
Component is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）82nd, potassium acetate 21, pyridine hydrochloride 8, fluorine
Sodium metasilicate 16, the B component is made up of the raw material of following parts by weight：APG 7, water 102, boric acid 16, malic acid 23, nitre
Sour ammonium 7.
Embodiment 5
A kind of composite oil well unblocking agent, it includes component A and B component, and the mass ratio of the component A and B component is 2:1, the A
Component is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）75th, potassium acetate 15, pyridine hydrochloride 7, fluorine
Sodium metasilicate 18, the B component is made up of the raw material of following parts by weight：APG 6, water 95, boric acid 12, malic acid 27, nitre
Sour ammonium 8.
It should be noted that, protection scope of the present invention is not limited to the embodiment of foregoing description, and technical solution of the present invention can
To carry out the allotment of various ratios as needed, equivalent various conversion are all among protection scope of the present invention with the present invention.
Claims (3)
1. a kind of composite oil well unblocking agent, it is characterized in that, it includes component A and B component, the mass ratio of the component A and B component
For 2:1, the component A is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）70~90, potassium acetate 10
~30, pyridine hydrochloride 5~12, prodan 10~20, the B component are made up of the raw material of following parts by weight：Alkyl sugar
Glycosides 4~10, water 90~110, boric acid 10~20, malic acid 15~30, ammonium nitrate 4~10.
2. composite oil well unblocking agent according to claim 1, it is characterized in that, it includes component A and B component, the component A
Mass ratio with B component is 2:1, the component A is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）
75~85, potassium acetate 15~25, pyridine hydrochloride 7~10, prodan 12~18, the B component is by following parts by weight
Raw material is constituted：APG 6~9, water 95~105, boric acid 12~18, malic acid 20~27, ammonium nitrate 5~8.
3. composite oil well unblocking agent according to claim 1, it is characterized in that, it includes component A and B component, the component A
Mass ratio with B component is 2:1, the component A is made up of the raw material of following parts by weight：Stable-state chlorine dioxide solution（2%）
80th, potassium acetate 20, pyridine hydrochloride 9, prodan 15, the B component are made up of the raw material of following parts by weight：APG
8th, water 100, boric acid 15, malic acid 24, ammonium nitrate 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140893.3A CN107227146A (en) | 2017-03-10 | 2017-03-10 | A kind of composite oil well unblocking agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140893.3A CN107227146A (en) | 2017-03-10 | 2017-03-10 | A kind of composite oil well unblocking agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107227146A true CN107227146A (en) | 2017-10-03 |
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ID=59933049
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710140893.3A Pending CN107227146A (en) | 2017-03-10 | 2017-03-10 | A kind of composite oil well unblocking agent |
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| CN (1) | CN107227146A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570314A (en) * | 2018-05-22 | 2018-09-25 | 河北峻极化工科技有限公司 | Blockages relieving fluid and preparation method thereof applied to water injection well sandstone de-plugging |
| CN111234794A (en) * | 2020-03-18 | 2020-06-05 | 北京大德广源石油技术服务有限公司 | Composite blocking remover and application method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435464A (en) * | 2002-11-08 | 2003-08-13 | 郝占元 | Borehole synthetic chlorine dioxide blocking remover and broken down method therewith for oil field |
| CN102250602A (en) * | 2011-05-06 | 2011-11-23 | 河北科技大学 | Composite acid blockage removing agent for oil well |
| CN102250601A (en) * | 2011-05-06 | 2011-11-23 | 河北科技大学 | Composite blocking remover for oil well and application method thereof |
-
2017
- 2017-03-10 CN CN201710140893.3A patent/CN107227146A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435464A (en) * | 2002-11-08 | 2003-08-13 | 郝占元 | Borehole synthetic chlorine dioxide blocking remover and broken down method therewith for oil field |
| CN102250602A (en) * | 2011-05-06 | 2011-11-23 | 河北科技大学 | Composite acid blockage removing agent for oil well |
| CN102250601A (en) * | 2011-05-06 | 2011-11-23 | 河北科技大学 | Composite blocking remover for oil well and application method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570314A (en) * | 2018-05-22 | 2018-09-25 | 河北峻极化工科技有限公司 | Blockages relieving fluid and preparation method thereof applied to water injection well sandstone de-plugging |
| CN111234794A (en) * | 2020-03-18 | 2020-06-05 | 北京大德广源石油技术服务有限公司 | Composite blocking remover and application method thereof |
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| 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: 20171003 |