CN106947452A - De-plugging agent composition polluted for Oil/gas Well barite and preparation method thereof - Google Patents
De-plugging agent composition polluted for Oil/gas Well barite and preparation method thereof Download PDFInfo
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- CN106947452A CN106947452A CN201710178858.0A CN201710178858A CN106947452A CN 106947452 A CN106947452 A CN 106947452A CN 201710178858 A CN201710178858 A CN 201710178858A CN 106947452 A CN106947452 A CN 106947452A
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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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Abstract
A kind of de-plugging agent composition polluted for Oil/gas Well barite, it is characterised in that it is made up of the raw material of following portions by weight：16~20 parts of hydroxyethyl acetamide, 20~25 parts of amino acetamide, 13~16 parts of 3 amino, 1,2,4 triazole, 12~16 parts of cinnamamide, crown ether（18 hats 6）10~14 parts, 6~9 parts of dihydroxytartaric acid sodium, 17~21 parts of ethymal, 11~15 parts of salethyl, 1~3 part of p-hydroxyphenylaceticacid, ammoniacal liquor（40wt%）25~35 parts, 90~110 parts of water.The de-plugging agent can be applied in normal temperature to 100 DEG C, the pollution de-plugging of Oil/gas Well barite can be completed within 4~8 hours, the dissolution rate of barite is more than more than 90%, and descaling rate is corrosion-free during de-plugging more than 98%, without dead angle, dirty slag is not fallen off, precipitation is not produced, secondary stifled well phenomenon does not occur, De-plugging speed is fast, waste liquid without the row's of returning floor treatment, reach the corrosion-free de-plugging of safety.
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 due to the pollution of Oil/gas Well barite
De-plugging agent composition, the invention further relates to Oil/gas Well barite pollute de-plugging agent composition preparation method.
Background technology
It is all to run into hydraulic oil, the well of gas and water layer in oil and gas exploration and development process, to apply and be higher than well
The exacerbation drilling well agent of drilling fluid density in cylinder, its quantity should close in pit shaft drilling fluid amount, the exacerbation density agent added is
Blanc fixe.Blanc fixe is a kind of weighting material of mud generally used, and the main chemical of blanc fixe is barium sulfate
（BaSO4）.Pure blanc fixe is white powder, the mesh of fineness 200 or so, and density is 4.2g/cm3, for improving Drilling Water
The density of base or oil-base mud, aggravates density and is less than 2.3 g/cm3Drilling fluid, for balancing the pressure of oil field stratum, prevent
There is the drilling failure such as well kick and blowout.And it is used for the blanc fixe of Weighted drilling mud proportion, it is not dissolved in drilling mud,
Easily occur in the drilling process of Oil/gas Well after delaminating deposition, its barite precipitation, intrinsic fracture and stratum in stratum can be blocked
Capillary throat, can cause gas channel after bringing in a well not smooth by the stratum of its pollution, and influence is recovered the oil or gas production；If weight is brilliant
Oil/gas Well can be also caused when stone is seriously polluted without oil gas output.
Because the chemical property of barite is highly stable, the solubility very little in water and strong acid, strong base solution, with routine
Strong acid, highly basic Chemical cleaning can not be dissolved removing.
Country's Oil/gas Well barite pollutes de-plugging agent substantially all by oxalic acid, citric acid, ATMP, second two at present
Amine tetraacethyl disodium, diethylene triamine pentacetic acid (DTPA) and NaOH etc. are constituted.Addition is big during descaling and blockage relieving, corrosivity is big and has
Waste liquid is difficult degradation treatment after toxicity, de-plugging, and the reaction time is 12~48 hours, and descaling rate is between 30%~90%, scale removal solution
When stifled it is most for two-step method soda acid alternately.If be not belonging to complexing descaling and blockage relieving method, its barite pollution scale removal solution
Stifled waste liquid must the row of returning ground handled.
The content of the invention
The technical problem to be solved in the present invention is that a kind of De-plugging speed of offer is fast, free from corrosion for Oil/gas Well barite
The de-plugging agent composition of pollution；The present invention also provides the preparation method that Oil/gas Well barite pollutes de-plugging agent composition.The de-plugging
Agent is used to pollute de-plugging to the barite of drilling mud heavy weight additive, the formation blockage thing solution that quickly can not only be polluted to barite
It is stifled, moreover it is possible to 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：It is dirty that one kind is used for Oil/gas Well barite
The de-plugging agent composition of dye, it is characterised in that it is made up of the raw material of following portions by weight：16~20 parts of hydroxyethyl acetamide, ammonia
20~25 parts of yl acetamide, 13~16 parts of 3- amino -1,2,4- triazoles, 12~16 parts of cinnamamide, crown ether（18- crown-s 6）10~
14 parts, 6~9 parts of dihydroxytartaric acid sodium, 17~21 parts of ethymal, 11~15 parts of salethyl, p-hydroxyphenylaceticacid 1~3
Part, ammoniacal liquor（40wt%）25~35 parts, 90~110 parts of water.
Raw material hydroxyethyl acetamide that de-plugging agent composition of the present invention is used, amino acetamide, 3- amino -1,2,4- three
Azoles, cinnamamide, crown ether（18- crown-s 6）, dihydroxytartaric acid sodium, ethymal, salethyl and p-hydroxyphenylaceticacid be
Medicine intermediate, organic synthesis intermediate, food additives, cleaning agent, raw material used in complexing agent, they are re-dubbed with water
Compound complex agent, bleeding agent, solubilizer；This de-plugging agent complexing is extremely strong, and activity is very big, and use condition is simple and convenient, reaction speed
Degree is fast, can quickly dissolve Oil/gas Well barite pollutant and oil field stratum barium strontium dirt, de-plugging efficiency high.
Ammoniacal liquor is the ammoniacal liquor of ammoniacal liquor, i.e. 40wt% concentration that mass percent concentration is 40%.The ammoniacal liquor conduct of 40wt% concentration
PH value regulator, its main function is that this de-plugging agent pH of compounding is leniently adjusted to 10~11, than being adjusted using traditional highly basic
Save pH to be more convenient, it is easier to control pH to use scope, it is often more important that ammoniacal liquor can be with the carboxylic group in complexing agent and solubilizer
Reaction generation ammonium salt, the complexing and solubilising that it reacts newly-generated ammonium salt is more preferable.This de-plugging agent properties of product in alkalescent
It is stable, corrosion-free, nontoxicity, than in acid and the neutrallty condition molten dirty rate of dissolving oil gas well barite pollutant and plugging removal effect
Improve 20%~30%.
The component of above-mentioned parts by weight is made to the preparation method of the de-plugging agent composition polluted for Oil/gas Well barite,
Step is as follows：Liquid charging stock component hydroxyethyl acetamide, salethyl are first added to the water, stir to obtain first liquid；
Again by solid material component amino acetamide, 3- amino -1,2,4- triazoles, cinnamamide, crown ether（18- crown-s 6）, dihydroxy base liquor
Stone acid sodium, ethymal and p-hydroxyphenylaceticacid are added, and stirring is to fully dissolving to obtain second liquid；It is eventually adding ammoniacal liquor regulation second
Liquid pH to 10~11, that is, be made the de-plugging agent composition polluted for Oil/gas Well barite.
The present invention is simple for the de-plugging agent its preparation method that Oil/gas Well barite pollutes, and product appearance is colourless or pale yellow
Color liquid, density is 1.06~1.22g/cm3, pH is 10~11, and rate of corrosion is less than 0.1g/ (m2H), it is non-toxic, given up after de-plugging
The degradable processing of liquid, waste liquid is without the row's of returning floor treatment.
This de-plugging agent belongs to complexing cleaning scale removal, can pollute de-plugging to barite, it is adaptable to the removal of bridge formation of Oil/gas Well,
Barium strontium dirt that can be tied to oil gas pit shaft and oil extraction pump surface etc. cleans de-plugging, with good complexing, dispersiveness, permeability
And dissolubility.This de-plugging agent addition is small, during oil field stratum de-plugging, pollutes stratum dirt chocking-up degree according to oil field barite and uses
Water is configured to the dilute solution that mass percent concentration is 4%~8%, and oil field machine-pumped oil well bottom is injected into 10Mpa high-pressure pumps
In producing formation.In oil field machine-pumped oil well scale removal Applicable temperature scope, normal temperature to boiling point can be used, with the weight deposited in Oil/gas Well
The dirts such as barium sulfate, strontium sulfate, barium carbonate, strontium carbonate and the calcium sulfate that spar pollutant and stratum flood pattern are produced
Reaction is learned, foregoing fouling can be fully dissolved, reactant is into water miscible micromolecular compound, and the dirty slag of the bulk that prevents from dropping is secondary stifled
Oil/gas Well and its oil extraction pump are filled in, one-step method completes the pollution de-plugging of Oil/gas Well barite, can quickly dissolve dirt, recover Oil/gas Well
Yield.The problem of traditional pickling big slag holddown easy to fall off can be efficiently solved and producing well is blocked, it is ensured that safe de-plugging, really
Reach corrosion-free Chemical cleaning de-plugging.
By 6 Oil/gas Well application tests in Daqing oil field, Bohai Bay Oil, it can be applied to 100 DEG C in normal temperature, 4
The pollution de-plugging of Oil/gas Well barite can be completed within~8 hours, the dissolution rate of barite is more than more than 90%, and descaling rate is more than
98%, corrosion-free during de-plugging, no dead angle does not fall off dirty slag, precipitation is not produced, and secondary stifled well phenomenon does not occur, and de-plugging is used
Temperature is wide, and the waste liquid after de-plugging is without the row's of returning floor treatment, and De-plugging speed is fast, reach the corrosion-free de-plugging of safety.
The present invention uses Green Chemistry Theory and technology, from nontoxic development of raw materials green synthesis process, creates
Environmentally friendly production process, this de-plugging agent oil and gas wells in oil fields removal of bridge formation application attestation, to operator and oil field
Environment is nontoxic.The de-plugging mechanism for the Oil/gas Well barite pollution de-plugging agent composition that the present invention is provided, technical requirements are as follows：
1st, Oil/gas Well barite pollution de-plugging agent mechanism
The present invention is considered from pore structure angle, according to complex scheme, and with expandable pores venturi, raising reservoir permeability is mesh
's.This de-plugging agent system be to blanc fixe and oil field barium strontium dirt to be complexed, it is chain rupture, scattered and dissolve, reaction generation is water-soluble
Compound, can avoid producing particle because of precipitation, the negative effect brought is comparatively small.De-plugging is polluted for blanc fixe,
This de-plugging agent does not injure reservoir skeleton, and the potential sediment dirt of complexing dissolving is also relatively easy to control, therefore to reservoir fanout free region；De-plugging
Safety coefficient is high, and success rate is high.
2nd, Oil/gas Well barite pollutes the technical requirements of de-plugging agent
Oil/gas Well barite pollution de-plugging agent is by hydroxyethyl acetamide, amino acetamide, 3- amino -1,2,4- triazoles, Chinese cassia tree
Acid amides, crown ether（18- crown-s 6）, dihydroxytartaric acid sodium, ethymal, salethyl, p-hydroxyphenylaceticacid, ammoniacal liquor（40wt%）
Complexing agent, bleeding agent, dispersant, wetting agent and the surfactant and pH value regulator ammoniacal liquor constituted with water（40wt%）Compounding
Form.We are when studying the prescription of the de-plugging agent, and each selected component thing is all environmentally friendly material, and each component
All without producing corrosion to metal material, and its compatibility of various ingredients used, intersolubility, anti-corrosive properties, wetability and steady
It is qualitative all fine, be free of H in cleaning de-plugging agent+、F-、Cl-、S2-、SO4 2-、PO4 3-Etc. the ion for being also easy to produce corrosive medium.Used
Material is nontoxic, tasteless, corrosion-free or meta-alkalescence material, and is easy to degrade in the earth formation, free from environmental pollution.The de-plugging agent
There are good chain rupture, coordination, complexing, infiltration, scattered and dissolution, chemistry solution to oil field blanc fixe pollutant and barium strontium dirt
Stifled speed is fast.During the cleaning de-plugging of oil field, the precipitation in burn into dead angle or stratum is not produced, and will not produce cleaning
The secondary stifled well of thing precipitation, can be in normal temperature under the conditions of 100 DEG C, and the processing de-plugging time is 4~8 hours, it is often more important that real
Corrosion-free safe chemistry de-plugging is reached, than traditional pickling de-plugging safety and reliability.
Embodiment
Embodiment 1；Raw material is weighed by following components and weight：Hydroxyethyl acetamide 16Kg, amino acetamide 25Kg, 3- ammonia
Base -1,2,4- triazoles 13Kg, cinnamamide 16Kg, crown ether（18- crown-s 6）12Kg, dihydroxytartaric acid sodium 8Kg, ethymal
21Kg, salethyl 11Kg, p-hydroxyphenylaceticacid 2Kg, ammoniacal liquor（40wt%）25Kg and water 95Kg.
Above-mentioned raw materials are prepared into the method for the de-plugging agent composition polluted for Oil/gas Well barite：By liquid charging stock group
Hydroxyethyl acetamide, salethyl is divided first to be added to the water, stir to obtain first liquid；Again by solid material component amino second
Acid amides, 3- amino -1,2,4- triazoles, cinnamamide, crown ether（18- crown-s 6）, dihydroxytartaric acid sodium, ethymal and para hydroxybenzene
Acetic acid is added, and stirring is to fully dissolving to obtain second liquid；Be eventually adding pH value regulator ammoniacal liquor regulation second liquid pH to
10.2, that is, the de-plugging agent composition polluted for Oil/gas Well barite is made.
Embodiment 2；Raw material is weighed by following components and weight：Hydroxyethyl acetamide 20Kg, amino acetamide 20Kg, 3- ammonia
Base -1,2,4- triazoles 16Kg, cinnamamide 12Kg, crown ether（18- crown-s 6）10Kg, dihydroxytartaric acid sodium 9Kg, ethymal
19Kg, salethyl 14Kg, p-hydroxyphenylaceticacid 3Kg, ammoniacal liquor（40wt%）30Kg, water 110Kg.
Above-mentioned raw materials are prepared into the method for the de-plugging agent composition polluted for Oil/gas Well barite：Add pH value regulation
Agent ammoniacal liquor adjusts the pH to 10.6 of second liquid；Remaining be the same as Example 1.
Embodiment 3；Raw material is weighed by following components and weight：Hydroxyethyl acetamide 18Kg, amino acetamide 22Kg, 3- ammonia
Base -1,2,4- triazoles 15Kg, cinnamamide 14Kg, crown ether（18- crown-s 6）14Kg, dihydroxytartaric acid sodium 6Kg, ethymal
17Kg, salethyl 15Kg, p-hydroxyphenylaceticacid 1Kg, ammoniacal liquor（40wt%）35Kg, water 100Kg.
Above-mentioned raw materials are prepared into the method for the de-plugging agent composition polluted for Oil/gas Well barite：Add pH value regulation
Agent ammoniacal liquor adjusts second liquid pH to 11；Remaining be the same as Example 1.
Embodiment 4；Raw material is weighed by following components and weight：Hydroxyethyl acetamide 19Kg, amino acetamide 21Kg, 3- ammonia
Base -1,2,4- triazoles 14Kg, cinnamamide 13Kg, crown ether（18- crown-s 6）13Kg, dihydroxytartaric acid sodium 7Kg, ethymal
20Kg, salethyl 13Kg, p-hydroxyphenylaceticacid 2Kg, ammoniacal liquor（40wt%）28Kg, water 90Kg.
Above-mentioned raw materials are prepared into the method for the de-plugging agent composition polluted for Oil/gas Well barite：Add pH value regulation
Agent ammoniacal liquor adjusts second liquid pH to 10.3；Remaining be the same as Example 1.
Embodiment 5；Raw material is weighed by following components and weight：Hydroxyethyl acetamide 17Kg, amino acetamide 24Kg, 3- ammonia
Base -1,2,4- triazoles 16Kg, cinnamamide 15Kg, crown ether（18- crown-s 6）11Kg, dihydroxytartaric acid sodium 8Kg, ethymal
18Kg, salethyl 12Kg, p-hydroxyphenylaceticacid 2.5Kg, ammoniacal liquor（40wt%）33Kg, water 105Kg.
Above-mentioned raw materials are prepared into the method for the de-plugging agent composition polluted for Oil/gas Well barite：Add pH value regulation
Agent ammoniacal liquor adjusts second liquid pH to 10.8；Remaining be the same as Example 1.
Claims (2)
1. it is a kind of for Oil/gas Well barite pollute de-plugging agent composition, it is characterised in that it by following portions by weight raw material
It is made：16~20 parts of hydroxyethyl acetamide, 20~25 parts of amino acetamide, 13~16 parts of 3- amino -1,2,4- triazoles, cinnamoyl
12~16 parts of amine, crown ether（18- crown-s 6）10~14 parts, 6~9 parts of dihydroxytartaric acid sodium, 17~21 parts of ethymal, salicylic acid second
11~15 parts of ester, 1~3 part of p-hydroxyphenylaceticacid, 25~35 parts of ammoniacal liquor, 90~110 parts of water；Ammoniacal liquor mass percent concentration is
40%。
2. it is used for the preparation method for the de-plugging agent composition that Oil/gas Well barite pollutes, its feature described in a kind of claim 1
It is that step is as follows：Liquid charging stock component hydroxyethyl acetamide, salethyl are first added to the water, stir to obtain the first liquid
Body；Again by solid material component amino acetamide, 3- amino -1,2,4- triazoles, cinnamamide, crown ether（18- crown-s 6）, dihydroxy
Sodium tartrate, ethymal and p-hydroxyphenylaceticacid are added, and stirring is to fully dissolving to obtain second liquid；It is eventually adding ammoniacal liquor regulation the
The pH of two liquid to 10~11, that is, be made the de-plugging agent composition polluted for Oil/gas Well barite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710178858.0A CN106947452A (en) | 2017-03-23 | 2017-03-23 | De-plugging agent composition polluted for Oil/gas Well barite and preparation method thereof |
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| CN201710178858.0A CN106947452A (en) | 2017-03-23 | 2017-03-23 | De-plugging agent composition polluted for Oil/gas Well barite and preparation method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-03-23 CN CN201710178858.0A patent/CN106947452A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20170714 |
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