CN106833583A - Oil and gas wells in oil fields barite pollution de-plugging agent composition and preparation method thereof - Google Patents
Oil and gas wells in oil fields barite pollution de-plugging agent composition and preparation method thereof Download PDFInfo
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- CN106833583A CN106833583A CN201710178859.5A CN201710178859A CN106833583A CN 106833583 A CN106833583 A CN 106833583A CN 201710178859 A CN201710178859 A CN 201710178859A CN 106833583 A CN106833583 A CN 106833583A
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- barite
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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
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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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
Abstract
A kind of oil and gas wells in oil fields barite pollutes de-plugging agent composition, is made up of the raw material of following portions by weight：20~25 parts of acetone semicarbazone, the amino 1,2,4 of 5 carboxylic acid 3,16~20 parts of triazole, 13~16 parts of L aspartic acids sodium, crown ether（18 hats 6）3~5 parts, 7~10 parts of phenyl ethyl malonate, 11~15 parts of dimethylethanolamine, 33~37 parts of ethymal, 9~13 parts of iminodiacetic acid, ammoniacal liquor（40wt%）30~35 parts and 70~80 parts of water.The de-plugging agent is used for the removal of bridge formation to the pollution of drilling mud barite；De-plugging speed is fast, the pollution de-plugging of Oil/gas Well barite was completed within 4~12 hours, recovers and improve oilfield well yield；Descaling rate is more than 98%, and one-step method completes the pollution de-plugging of oil and gas wells in oil fields barite；Reach the corrosion-free de-plugging of safety；It is corrosion-free during de-plugging, without dead angle, precipitation and secondary stifled well phenomenon are not produced, can effectively remove more than 90% barite mud pollution.
Description
Technical field
Patent of the present invention is related to the auxiliary agent that a kind of oil extraction in oil field is used, and in particular to a kind of oil field barite pollutes de-plugging agent
Composition, the invention further relates to the preparation method that oil and gas wells in oil fields barite pollutes de-plugging agent composition.
Background technology
Oil field, the pollution of Oil/gas Well barite refer to the high pressure work that Oil/gas Well needs according to drilling stratum in drilling process
Condition, adds heavy material in drilling fluid, and equilibrium strata pressure is carried out with the density for improving drilling fluid, prevents the appearance in drilling process
The accident such as well kick and blowout.Addition barite is commonly used in drilling mud to improve the density of drilling mud.Generally from exacerbation
Material is blanc fixe, and its density is 4.2g/cm3, the mesh of fineness 200 or so, for improving water base or oil-base mud density, use
2.3g/cm is less than in density is aggravated3Drilling fluid, carry out equilibrium strata pressure.And the main chemical compositions of blanc fixe are sulfuric acid
Barium（BaSO4）, insoluble in drilling mud, physics sedimentation being susceptible in drilling mud, the blanc fixe after its sedimentation is blocked
The gap of oil field stratum and capillary throat, and oil and gas production will be substantially reduced by the oil field stratum of barite blocking pollution, or
Person is changed into " dried-up well " without oil gas output at all.
Because the chemical property of barite is highly stable, solubility very little in water and in strong acid and strong base solution, therefore
De-plugging agent is cleaned with conventional soda acid be difficult to clean off pollutant.
Current oil field at home Oil/gas Well barite pollution de-plugging agent substantially all by oxalic acid, citric acid, ATMP,
Disodium ethylene diamine tetraacetate, diethylene triamine pentacetic acid (DTPA) and NaOH etc. are constituted, and addition is big during descaling and blockage relieving, corrosivity
Greatly, toxic, waste liquid is difficult degradation treatment after de-plugging, and the reaction time is 12~48 hours, and descaling rate is removed between 30%~90%
During dirty de-plugging it is most for two-step method acid, alkali alternately.If be not belonging to complexing descaling and blockage relieving method, the pollution of its barite is removed
The waste liquid of dirty de-plugging must the row of returning ground processed.
The content of the invention
The technical problem to be solved in the present invention is to provide that a kind of De-plugging speed is fast, free from corrosion oil and gas wells in oil fields barite
Pollution de-plugging agent composition, for the removal of bridge formation polluted to drilling mud barite；The present invention also provides oil and gas wells in oil fields weight
Spar pollutes the preparation method of de-plugging agent composition.The de-plugging agent can quickly dissolve the formation blockage polluted by barite, also can
Barium sulfate, strontium sulfate, barium carbonate, strontium carbonate and calcium sulfate scale that quick dissolving oil field flood pattern is produced.
In order to solve the above-mentioned technical problem, the technical scheme that the present invention takes is as follows：A kind of oil and gas wells in oil fields barite is dirty
Dye de-plugging agent composition, it is characterised in that it is made up of the raw material of following portions by weight：20~25 parts of acetone semicarbazone, 5- carboxylics
Acid -3- amino -1,2,4,16~20 parts of-triazole, 13~16 parts of L- aspartic acids sodium, crown ether（18- crown-s 6）3~5 parts, phenyl third
7~10 parts of diethyl adipate, 11~15 parts of dimethylethanolamine, 33~37 parts of ethymal, 9~13 parts of iminodiacetic acid, ammonia
Water（40wt%）30~35 parts and 70~80 parts of water.
Raw material acetone semicarbazone, 5- carboxylic acid -3- amino -1,2,4 that the present invention is used,-triazole, L- aspartic acids sodium, hat
Ether（18- crown-s 6）, phenyl ethyl malonate, dimethylethanolamine, ethymal and iminodiacetic acid, be in the middle of medicine
The raw material that body, organic synthesis intermediate, food additives, cleaning agent, complexing agent are used, their de-pluggings with water compounding
Agent is compound complex agent, bleeding agent, solubilizer.The de-plugging agent complexing that the present invention is provided is extremely strong, and activity is very big, use condition letter
Just, reaction speed is fast for folk prescription, can dissolve oil and gas wells in oil fields barite pollutant and oil field stratum barium strontium dirt, de-plugging efficiency high.
The ammoniacal liquor of the 40wt% concentration used in the raw material of the present invention i.e. ammoniacal liquor of mass percent concentration 40%, as de-plugging agent
The pH value regulator of composition；Its Main Function is that this de-plugging agent pH of compounding is leniently adjusted to 10~11, than using tradition
Highly basic regulation pH be more convenient, it is easier to the scope of control ph；More importantly ammoniacal liquor can with complexing agent and solubilizer in
Carboxylic group reaction generation ammonium salt, the complexing of its newly-generated ammonium salt of reaction, solubilising are more preferable.De-plugging agent of the present invention is in alkalescent
When properties of product stabilization, corrosion-free, nontoxicity, than in the acid and neutrallty condition dissolving oil molten dirty rate of gas well barite pollutant
20%~30% is improved with plugging removal effect.
The raw material of above-mentioned parts by weight is made the preparation method that oil and gas wells in oil fields barite pollutes de-plugging agent composition, step
It is rapid such as following：
First, liquid charging stock phenyl ethyl malonate, dimethylethanolamine are added to the water, stir to obtain liquid A；And
Afterwards, by solid material acetone semicarbazone, 5- carboxylic acid -3- amino -1,2,4,-triazole, L- aspartic acids sodium, crown ether（18- crown-s 6）、
Ethymal, iminodiacetic acid are added and sequentially add liquid A, stirring while adding, and liquid B is fully dissolved to obtain to solid material；Most
Afterwards, the pH to 10~11 that liquid B is adjusted as the ammoniacal liquor of pH value regulator is added, that is, is prepared into oil and gas wells in oil fields barite dirty
Dye de-plugging agent composition.
The oil and gas wells in oil fields barite pollution de-plugging agent preparation method that the present invention is provided is simple, and product appearance is colourless or shallow
Yellow liquid, density is 1.06~1.22g/cm3, pH is 10~11, and rate of corrosion is less than 0.1g/ (m2·h).The de-plugging agent is nontoxic
Property, belonging to complexing descaling and blockage relieving, addition is small when polluting de-plugging for oil and gas wells in oil fields barite, the degradable place of waste liquid after de-plugging
Reason, waste liquid are without the row's of returning floor treatment.The agent of this de-plugging agent belongs to complexing cleaning scale removal, during oil field stratum de-plugging, can be according to oil field
Oil/gas Well barite pollution stratum dirt chocking-up degree water is configured to the dilute solution that mass percent concentration is 4%~8%, uses
10Mpa high-pressure pumps are injected into the producing formation of oil field machine-pumped oil well bottom.In oil field, machine-pumped oil well scale removal Applicable temperature scope is wide, root
Normal temperature may be selected to using to 100 DEG C according to the temperature on oil extraction in oil field stratum, its with oil and gas wells in oil fields in the barite that deposits pollute
The dirts such as barium sulfate, strontium sulfate, barium carbonate, strontium carbonate and the calcium sulfate that thing and stratum flood pattern are produced chemically react,
Generation water soluble compound, dirty slag and secondary new sediment are not produced, the bulk dirt slag that prevents from dropping is secondary block Oil/gas Well and
Its oil extraction pump.Classical acid can be efficiently solved and wash big slag off and the secondary problem for blocking Oil/gas Well.
The de-plugging agent that the present invention is provided is proved in the application test that middle oily Changqing oilfields are carried out：De-plugging speed is fast, 4~12
The pollution de-plugging of Oil/gas Well barite is completed within hour, recovers and improve oilfield well yield；Descaling rate is more than 98%, one
Footwork completes the pollution de-plugging of oil and gas wells in oil fields barite；Reach the corrosion-free de-plugging of safety；It is corrosion-free during de-plugging, without dead angle,
Precipitation and secondary stifled well phenomenon are not produced, more than 90% barite mud pollution can be effectively removed.
With the high speed development of industry, global environmental pollution and ecological disruption is increasingly serious, protects human survival ring
Border is very urgent.Therewith, in terms of China oil field uses ecology, environment, resource, economic dispatch involved by various additives
Problem has been mentioned the height of development strategy, and the liquid waste processing as produced by additive has been changed to prevent from origin or seldom
Produce pollution waste liquid, focus on to pollute prevention and the improvement after uncontamination.The present invention uses Green Chemistry Theory and technology, choosing
With nontoxic development of raw materials green synthesis process and environmentally friendly production process.De-plugging agent product of the present invention is in oil field
It is nontoxic to operator and oilfield environment during removal of bridge formation.Develop main technical requirements of the invention and synthesis of the present invention
Mechanism is as follows：
1st, oil and gas wells in oil fields barite of the present invention pollutes the technical requirements of de-plugging agent
The oil and gas wells in oil fields barite pollution de-plugging agent that the present invention is provided is by various complexing agents, bleeding agent, wetting agent and surface
Activating agent compounding is formed.When the raw material prescription of the de-plugging agent is studied, each selected raw material thing is all environmental protection to inventor
Property material, each component all without metal material is produced its compatibility between corrosion, and various ingredients used, intersolubility,
Anti-corrosive properties, wetability and stability are all fine.H is free of in de-plugging agent+、Cl-、S2-、SO4 2-Etc. the ion for being also easy to produce corrosive medium.
The raw material for being used all is nontoxic, tasteless, corrosion-free material, and is easy to degrade in the earth formation, free from environmental pollution.This de-plugging
Agent by barium sulfate, strontium sulfate, barium carbonate, strontium carbonate and calcium sulfate that barite pollution and oil field stratum are produced to having good network
Splitting or integrating dissipates, permeates and dissolution, and chemical cleaning speed is fast.
2nd, it is complexed descaling and blockage relieving mechanism
Acetone semicarbazone, 5- carboxylic acid -3- amino -1,2,4 selected in raw material of the present invention,-triazole, L- aspartic acids sodium, hat
Ether（18- crown-s 6）, phenyl ethyl malonate, dimethylethanolamine, ethymal, iminodiacetic acid etc. containing it is various with from
Son active group, they with by barite pollution and oil field stratum generation barium sulfate, strontium sulfate, barium carbonate, strontium carbonate and
Calcium sulfate is complexed, and is changed into micromolecular compound soluble in water, so as to play de-plugging effect.This complex reaction is not based on chemistry
Amount is carried out, but carried out by chemical molecular ratio, the complexing agent de-plugging agent generally per several grams to tens grams just can dissolve several hectograms
The dirt of barium, strontium ion, its compatibility, solubilising are good, can play cooperative effect, even if this de-plugging agent is in the very low situation of consumption
Under, can be also complexed with substantial amounts of fouling barium strontium plasma, this effect is referred to as low dose effect.
3rd, the security reliability of descaling and blockage relieving agent
Product pH of the present invention is 10~11, and fast in oil field stratum De-plugging speed, during Oil/gas Well de-plugging, rate of corrosion is less than
0.1g/(m2.h), it has been really achieved corrosion-free Chemical cleaning de-plugging.It is more safer than traditional chemical cleaning inorganic acid, organic acid
It is reliable, completely eliminate the burst factors such as corrosion inhibiter failure during because with pickling Oil/gas Well, corrosion inhibiter emulsification inequality or misoperation
Corrosion to oil production equipment.
The de-plugging agent that the present invention is provided is used for during the pollution complexing de-plugging of oil and gas wells in oil fields barite, due to this de-plugging agent
Do not produce the precipitation in burn into dead angle or Oil/gas Well to Oil/gas Well, the secondary stifled well and holddown of cleaning materials precipitation will not be produced existing
As, can be in normal temperature under the conditions of 100 DEG C, the treatment de-plugging time is 4~8 hours, and scaling effect is good.More importantly it is really achieved
Corrosion-free safe chemistry de-plugging, than traditional pickling de-plugging safety and reliability.This de-plugging agent completely eliminates slow when being blocked up with acidolysis
The etching problem that erosion agent failure is caused, has also evaded inflammable, explosive, the poisonous risk for being difficult to and controlling, safe and reliable, for ensureing
Safety in production, long period oil recovery important in inhibiting.
Specific embodiment
Embodiment 1；Raw material is weighed by following components and weight：Acetone semicarbazone 20Kg, 5- carboxylic acid -3- amino -1,2,4, -
Triazole 16Kg, L- aspartic acid sodium 16Kg, crown ether（18- crown-s 6）5Kg, phenyl ethyl malonate 8Kg, dimethylethanolamine
14Kg, ethymal 33Kg, iminodiacetic acid 12Kg, ammoniacal liquor（40wt%）32Kg, water 75Kg.
Preparation method：First, liquid charging stock phenyl ethyl malonate, dimethylethanolamine are added to the water, stirring is equal
It is even to obtain liquid A；Then, by solid material acetone semicarbazone, 5- carboxylic acid -3- amino -1,2,4,-triazole, L- aspartic acids sodium, hat
Ether（18- crown-s 6）, ethymal, iminodiacetic acid add sequentially add liquid A, it is stirring while adding, it is fully molten to solid material
Solve liquid B；Finally, the pH to 10.3 that liquid B is adjusted as the ammoniacal liquor of pH value regulator is added, that is, is prepared into oilfield
Well barite pollutes de-plugging agent composition.
Embodiment 2；Raw material is weighed by following components and weight：Acetone semicarbazone 25Kg, 5- carboxylic acid -3- amino -1,2,4, -
Triazole 20Kg, L- aspartic acid sodium 13Kg, crown ether（18- crown-s 6）3Kg, phenyl ethyl malonate 9Kg, dimethylethanolamine
12Kg, ethymal 37Kg, iminodiacetic acid 10Kg, ammoniacal liquor（40wt%）35Kg, water 70Kg.
Preparation method：Adjust the pH to 11 of liquid B；Remaining is with embodiment 1.
Embodiment 3；Raw material is weighed by following components and weight：Acetone semicarbazone 23Kg, 5- carboxylic acid -3- amino -1,2,4, -
Triazole 18Kg, L- aspartic acid sodium 14Kg, crown ether（18- crown-s 6）4Kg, phenyl ethyl malonate 7Kg, dimethylethanolamine
15Kg, ethymal 36Kg, iminodiacetic acid 13Kg, ammoniacal liquor（40wt%）30Kg, water 80Kg.
Preparation method：Adjust the pH to 10.1 of liquid B；Remaining is with embodiment 1.
Embodiment 4；Raw material is weighed by following components and weight：Acetone semicarbazone 21Kg, 5- carboxylic acid -3- amino -1,2,4, -
Triazole 17Kg, L- aspartic acid sodium 15Kg, crown ether（18- crown-s 6）5Kg, phenyl ethyl malonate 10Kg, dimethylethanolamine
11Kg, ethymal 34Kg, iminodiacetic acid 9Kg, ammoniacal liquor（40wt%）34Kg, water 78Kg.
Preparation method：Adjust the pH to 10.5 of liquid B；Remaining is with embodiment 1.
Embodiment 5；Raw material is weighed by following components and weight：Acetone semicarbazone 24Kg, 5- carboxylic acid -3- amino -1,2,4, -
Triazole 19Kg, L- aspartic acid sodium 13Kg, crown ether（18- crown-s 6）4Kg, phenyl ethyl malonate 8Kg, dimethylethanolamine
13Kg, ethymal 35Kg, iminodiacetic acid 11Kg, ammoniacal liquor（40wt%）33Kg, water 73Kg.
Preparation method：Adjust the pH to 10.6 of liquid B；Remaining is with embodiment 1.
Claims (2)
1. a kind of oil and gas wells in oil fields barite pollution de-plugging agent composition, it is characterised in that it by following portions by weight raw material system
Into：20~25 parts of acetone semicarbazone, 5- carboxylic acid -3- amino -1,2,4,16~20 parts of-triazole, 13~16 parts of L- aspartic acids sodium,
Crown ether（18- crown-s 6）3~5 parts, 7~10 parts of phenyl ethyl malonate, 11~15 parts of dimethylethanolamine, ethymal 33~37
Part, 9~13 parts of iminodiacetic acid, ammoniacal liquor（40wt%）30~35 parts and 70~80 parts of water.
2. the oil and gas wells in oil fields barite described in a kind of claim 1 pollutes de-plugging agent preparation method of composition, it is characterised in that：
First, liquid charging stock phenyl ethyl malonate, dimethylethanolamine are added to the water, stir to obtain liquid A；Then, will
Solid material acetone semicarbazone, 5- carboxylic acid -3- amino -1,2,4,-triazole, L- aspartic acids sodium, crown ether（18- crown-s 6）, second amber
Amine, iminodiacetic acid are added and sequentially add liquid A, stirring while adding, and liquid B is fully dissolved to obtain to solid material；Finally, plus
Enter the pH to 10~11 that liquid B is adjusted as the ammoniacal liquor of pH value regulator, that is, be prepared into the pollution de-plugging of oil and gas wells in oil fields barite
Agent composition.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102624A (en) * | 2017-12-14 | 2018-06-01 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of neutrality de-plugging inorganic agent and preparation method thereof |
| CN117511527A (en) * | 2024-01-02 | 2024-02-06 | 东营煜煌能源技术有限公司 | Descaling blocking remover and preparation method thereof |
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| CN103834377A (en) * | 2014-03-11 | 2014-06-04 | 范金彪 | Scale prevention blocking remover for ternary composite water dependent well |
| CN104194758A (en) * | 2014-09-23 | 2014-12-10 | 兰州熙瑞化工科技有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN105734579A (en) * | 2016-03-08 | 2016-07-06 | 陕西省石油化工研究设计院 | Phosphorylation corrosion inhibitor |
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2017
- 2017-03-23 CN CN201710178859.5A patent/CN106833583A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834377A (en) * | 2014-03-11 | 2014-06-04 | 范金彪 | Scale prevention blocking remover for ternary composite water dependent well |
| CN104194758A (en) * | 2014-09-23 | 2014-12-10 | 兰州熙瑞化工科技有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN105734579A (en) * | 2016-03-08 | 2016-07-06 | 陕西省石油化工研究设计院 | Phosphorylation corrosion inhibitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102624A (en) * | 2017-12-14 | 2018-06-01 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of neutrality de-plugging inorganic agent and preparation method thereof |
| CN117511527A (en) * | 2024-01-02 | 2024-02-06 | 东营煜煌能源技术有限公司 | Descaling blocking remover and preparation method thereof |
| CN117511527B (en) * | 2024-01-02 | 2024-03-19 | 东营煜煌能源技术有限公司 | Descaling blocking remover and preparation method thereof |
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