CN107652959A - A kind of oilfield transportation system and the neutral scale remover of flood pattern - Google Patents
A kind of oilfield transportation system and the neutral scale remover of flood pattern Download PDFInfo
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- CN107652959A CN107652959A CN201710881218.6A CN201710881218A CN107652959A CN 107652959 A CN107652959 A CN 107652959A CN 201710881218 A CN201710881218 A CN 201710881218A CN 107652959 A CN107652959 A CN 107652959A
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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
- 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
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Abstract
The present invention relates to a kind of oilfield transportation system and the neutral scale remover of flood pattern.The invention belongs to produced water treatment field.A kind of oilfield transportation system and the neutral scale remover of flood pattern, mass percent composition is sodium nitrilo triacetate 10 20%, ethylene diamine tetra methylene phosphonic acid sodium 10 20%, diethylene-triamine pentaacetic acid 5 15%, tetrakis hydroxymetyl phosphonium sulfuric 5 10%, sodium potassium tartrate tetrahydrate 2 8%, ammonium citrate 0.1 1.5%, AEO 9 0.5 1.5%, OEP 70 0.1 1.0%, remaining is water.Oilfield transportation system and flood pattern with neutral scale remover there is good scale removal to remove contamination effect, can fast and effeciently remove the pollutants such as the calcium carbonate deposited in gathering system and flood pattern, calcium sulfate, barium sulfate, silicate scale, ferrous sulfide, various corrosion products, greasy filth.The present invention have the advantages that component is simple, prepare easily and fast it is efficient, cost is cheap, scale removal efficiency high, usage amount are low, to equipment non-hazardous, environmentally friendly, can not stop production scale removal, Small side effects.
Description
Technical field
The invention belongs to produced water treatment field, more particularly in a kind of oilfield transportation system and flood pattern use
Property scale remover.
Background technology
At present, in oilfield transportation system and flood pattern, because incrustation ion is balanced by water quality, pressure, temperature, stream
Speed change influences, and can be combined into calcium carbonate, magnesium carbonate, calcium sulfate, barium sulfate, strontium sulfate etc. and be deposited, formation line clogging,
Equipment dischargeable capacity is reduced, and causes the serious consequences such as underdeposit corrosion, water flood treatment arrival water filling layer position not up to standard can even be made
Into formation blockage, great harm is brought to oil field production.
In oilfield process, to prevent a series of problems that fouling brings from occurring, generally use filling antisludging agent or
The method of scale preventative, control amount of scale buildup and scale velocity.But because the antisludging agent effect of some onsite applications can not reach design
Scale inhibition requirement, finally still result in part pipeline, equipment even stratum blocking, it is necessary to carry out dirty removing processing or formation acidizing
Operation.
The consequence formed for fouling, descaling method the most frequently used in the past is the Chemical cleanings such as pickling, alkali cleaning, wherein pickling
Scale removal is mainly used in the compound dirt of carbonate scale, hydroxide dirt and iron, and conventional acid has inorganic acid and organic acid, inorganic acid
Main to include hydrochloric acid, nitric acid and sulfuric acid, organic acid mainly includes sulfamic acid and citric acid etc..Although pickling is with good clear
Effect is washed, but pickling can cause the corrosion of equipment metal material and the aging of nonmetallic materials unavoidably, while pickling is to calcium sulfate
Dirt, barium sulfate, strontium sulfate scale and silicate scale do not act on, and have stronger limitation.Pickling also produces substantial amounts of titanium dioxide
Carbon and hydrogen sulfide gas, equipment and personal security are caused potentially hazardous.The dirty block of bulk, which comes off, in pickling easily causes two
It is secondary to block even holddown phenomenon.The acid cleaning process cycle is longer, also to cause prolonged production suspension induced losses, therefore pickling descaling is present
More and more not by technical problems such as produced on-site receiving.
The content of the invention
The present invention provides a kind of oilfield transportation system and flood pattern to solve technical problem present in known technology
With neutral scale remover.
It is an object of the invention to provide one kind have component is simple, prepare easily and fast efficiently, cost is cheap, scale removal effect
Rate is high, usage amount is low, to equipment non-hazardous, environmentally friendly, scale removal, Small side effects of can not stopping production the features such as oil field gathering and transportation system
System and the neutral scale remover of flood pattern.
Sodium nitrilo triacetate has very strong complexing power, can be with various metals ion forming complex.Ethylenediamine tetraacetic
Methylenephosphonic acid sodium can be dissociated into 8 negative ions in aqueous, therefore can form multiple lists with multiple metal ion-chelants
Body constructs the netted complex compound of macromolecular, laxly evacuates in water, makes calcium dirt deformity crystallization by vertical bad.Ethylene diamine tetra methylene phosphonic acid
Sodium for calcium carbonate, calcium sulfate, barium sulfate scale features high scale-removing effect.Ethylene diamine tetra methylene phosphonic acid sodium also has good delay simultaneously
Lose function.The each molecule of diethylene-triamine pentaacetic acid has 8 coordinate bonds (3 N and 5 O), can be in a free metal ion
Surrounding provides 8 coordinate bonds, is a kind of metal ion chelation agent of function admirable, low dosage is i.e. to calcium carbonate, calcium sulfate and sulphur
Sour barium dirt has good removal effect.Tetrakis hydroxymetyl phosphonium sulfuric is a kind of multi-functional medicament, and complexing is played in the formula
Ferrous sulfide is acted on, and hydrogen sulfide gas is not produced while remove ferrous sulfide, and tetrakis hydroxymetyl phosphonium sulfuric has again in itself
Strong sterilizing function, the SRB under dirt and in greasy filth can be killed, play a part of peeling off greasy filth.Sodium potassium tartrate tetrahydrate is in water
Carboxylic Acid Ions have very strong complex performance after ionization, can be complexed with most bivalent metal ions, to iron rust and patina
There is good dissolving removal effect.Ammonium citrate is gone during cleaning and descaling mainly for the corrosion product of metal material
Remove, while promote complexing of the tetrakis hydroxymetyl phosphonium sulfuric to ferrous sulfide.Peregal AEO-9 is a kind of water soluble surfactant active,
Promote the deposit contact above medicament and device bottom, while dissolving to greasy filth and stripping have good effect.OEP-70
As high-efficient penetrant, there is good osmosis to the solid dirt of metal surface deposition during cleaning and descaling, make whole
Individual scale remover can more efficiently play a role.The characteristics of for this several medicament, the present invention make it using the method for compounding
Synergistic, oilfield transportation system and the neutral scale remover of flood pattern is made, there is features high scale-removing effect, chemical feeding quantity is low, no corruption
Erosion, can not stop production the significant performance feature such as On Line Foul Removing Technology.
Oilfield transportation system of the present invention and the neutral scale remover of flood pattern, its mass percent composition is nitrilotriacetic acid
Sodium mass fraction is 10-20%, and ethylene diamine tetra methylene phosphonic acid sodium mass fraction is 10-20%, diethylene-triamine pentaacetic acid quality
Fraction is 5-15%, tetrakis hydroxymetyl phosphonium sulfuric mass fraction 5-10%, sodium potassium tartrate tetrahydrate mass fraction 2-8%, ammonium citrate matter
Fraction 0.1-1.5% is measured, peregal AEO-9 mass fractions 0.5-1.5%, OEP-70 mass fraction 0.1-1.0%, remaining is
Water.
The structural formula of sodium nitrilo triacetate is：
The structural formula of ethylene diamine tetra methylene phosphonic acid sodium is：
The structural formula of diethylene-triamine pentaacetic acid is：
The structural formula of tetrakis hydroxymetyl phosphonium sulfuric is：
The structural formula of sodium potassium tartrate tetrahydrate is：
The structural formula of ammonium citrate quality is：
AEO-9 molecular formula is C30H62O10, hydrophilic emulsifying agent
OEP-70 is high-efficient penetrant
Oilfield transportation system of the present invention and flood pattern are adopted the technical scheme that with neutral scale remover：
A kind of oilfield transportation system and the neutral scale remover of flood pattern, are characterized in：Oilfield transportation system and water filling system
System is sodium nitrilo triacetate 10-20%, ethylene diamine tetra methylene phosphonic acid sodium 10- with the mass percent composition of neutral scale remover
20%, diethylene-triamine pentaacetic acid 5-15%, tetrakis hydroxymetyl phosphonium sulfuric 5-10%, sodium potassium tartrate tetrahydrate 2-8%, ammonium citrate 0.1-
1.5%, peregal AEO-9 0.5-1.5%, OEP-70 0.1-1.0%, remaining is water.
Oilfield transportation system of the present invention and flood pattern can also be adopted the following technical scheme that with neutral scale remover：
Described oilfield transportation system and the neutral scale remover of flood pattern, is characterized in：Oilfield transportation system and water filling
System is using mechanical mixture sodium nitrilo triacetate, ethylene diamine tetra methylene phosphonic acid sodium, the second of diethylentriamine five with neutral scale remover
Acid, tetrakis hydroxymetyl phosphonium sulfuric, sodium potassium tartrate tetrahydrate, ammonium citrate, peregal AEO-9 and the OEP-70 aqueous solution mode made of.
The present invention has the advantages and positive effects of：
Oilfield transportation system and flood pattern with neutral scale remover as a result of the brand-new technical scheme of the present invention, it is and existing
There is technology to compare, the present invention can fast and effeciently remove the calcium carbonate deposited in oilfield transportation system and flood pattern, calcium sulfate,
The pollutants such as barium sulfate, silicate scale, ferrous sulfide, various corrosion products, greasy filth, and the neutral scale remover, without strong acid
Highly basic, any corrosion impact will not be caused to equipment, not have carbon dioxide and hydrogen sulfide gas release during descaling rinsing
Out, on rubber components without influence, can not stop production descaling rinsing process scale remover On-line construction, be produced after work progress and construction
System operation is steady, and violent chemical reaction does not occur during scale removal, does not have large-scale dirty piece and comes off, effectively prevent
The generation of secondary holddown or clogging.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and describe in detail
It is as follows：
Embodiment 1
A kind of oilfield transportation system and the neutral scale remover of flood pattern, its mass percent composition are：Nitrilotriacetic acid
Sodium mass fraction is 15%, and ethylene diamine tetra methylene phosphonic acid sodium mass fraction is 10%, and diethylene-triamine pentaacetic acid mass fraction is
6%, tetrakis hydroxymetyl phosphonium sulfuric mass fraction 5%, sodium potassium tartrate tetrahydrate mass fraction 4%, ammonium citrate mass fraction 1.5%, put down
Flat plus AEO-9 mass fractions 0.5%, OEP-70 mass fractions 0.2%, water quality fraction 57.8%.
The oilfield transportation system and flood pattern use mechanical mixture sodium nitrilo triacetate, ethylenediamine tetraacetic with neutral scale remover
Methylenephosphonic acid sodium, diethylene-triamine pentaacetic acid, tetrakis hydroxymetyl phosphonium sulfuric, sodium potassium tartrate tetrahydrate, ammonium citrate, AEO-9 and OEP-70
The mode of the aqueous solution is made.
A faint yellow uniform liquid product is made by said process, pH value 7.15, neutral scale removal can be used as
Agent uses, and has to pollutants such as calcium carbonate, calcium sulfate, barium sulfate, silicate scale, ferrous sulfide, various corrosion products, greasy filth
Good removal effect.
Embodiment 2
A kind of oilfield transportation system and the neutral scale remover of flood pattern, its mass percent composition are：Nitrilotriacetic acid
Sodium mass fraction is 10%, and ethylene diamine tetra methylene phosphonic acid sodium mass fraction is 15%, and diethylene-triamine pentaacetic acid mass fraction is
10%, tetrakis hydroxymetyl phosphonium sulfuric mass fraction 8%, sodium potassium tartrate tetrahydrate mass fraction 6%, ammonium citrate mass fraction 1.5%, put down
Flat plus AEO-9 mass fractions 0.5%, OEP-70 mass fractions 0.5%, water quality fraction 48.5%.
The oilfield transportation system and flood pattern use mechanical mixture sodium nitrilo triacetate, ethylenediamine tetraacetic with neutral scale remover
Methylenephosphonic acid sodium, diethylene-triamine pentaacetic acid, tetrakis hydroxymetyl phosphonium sulfuric, sodium potassium tartrate tetrahydrate, ammonium citrate, AEO-9 and OEP-70
The mode of the aqueous solution is made.
A faint yellow uniform liquid product is made by said process, pH value 6.82, neutral scale removal can be used as
Agent uses, and has to pollutants such as calcium carbonate, calcium sulfate, barium sulfate, silicate scale, ferrous sulfide, various corrosion products, greasy filth
Good removal effect.
Embodiment 3
The effective neutral scale remover WCG-3355 in oil field sea preparation and application：
Component proportion (in mass)：Sodium nitrilo triacetate mass fraction is 15%, ethylene diamine tetra methylene phosphonic acid sodium quality
Fraction is 10%, and diethylene-triamine pentaacetic acid mass fraction is 8%, tetrakis hydroxymetyl phosphonium sulfuric mass fraction 5%, sodium potassium tartrate tetrahydrate
Mass fraction 2%, ammonium citrate mass fraction 1%, peregal AEO-9 mass fractions 0.2%, OEP-70 mass fractions 0.1%,
Water quality fraction 58.7%.
Preparation method：Uniformly it is made by formula ratio mechanical mixture
Experimental subjects：Certain offshore platform sea pipe scale removal
Experimental method：Take 100ml to test water sample, add the live dirty sample of identical weight, dirty sample analysis result is shown in Table 1, added
Enter the scale remover WCG-3355 of various concentrations and (60 DEG C) standings in insulating box, take out within every 24 hours one group, filtering is undissolved
Dirty sample and dry weigh, calculate descaling rate, the results are shown in Table 2.
The dirty sample analysis result of table 1
The various concentrations scale remover WCG-3355 of table 2 static scale removal effect
Embodiment 4
The neutral scale remover WCG-3618 in oil field preparation and application：
Component proportion (in mass)：Sodium nitrilo triacetate mass fraction is 12%, ethylene diamine tetra methylene phosphonic acid sodium quality
Fraction is 12%, and diethylene-triamine pentaacetic acid mass fraction is 12%, tetrakis hydroxymetyl phosphonium sulfuric mass fraction 8%, potassium tartrate
Sodium mass fraction 3%, ammonium citrate mass fraction 1%, peregal AEO-9 mass fractions 0.5%, OEP-70 mass fractions
0.1%, water quality fraction 51.4%.
Preparation method：Uniformly it is made by formula ratio mechanical mixture
Experimental subjects：Certain offshore platform waterflood-transmission line scale removal
Experimental method：Take 100ml to test water sample, add the live dirty sample of identical weight, dirty sample analysis result is shown in Table 3, added
Enter the scale remover WCG-3618 of various concentrations and (60 DEG C) standings in insulating box, take out within every 24 hours one group, filtering is undissolved
Dirty sample and dry weigh, calculate descaling rate, the results are shown in Table 4.
The dirty sample analysis result of table 3
The various concentrations scale remover WCG-3618 of table 4 static scale removal effect
Embodiment 5
The effective neutral scale remover WCG-3355 in oil field sea preparation and application：
Preparation method：Proportioning and method are the same as embodiment 3
Experimental subjects：With embodiment 3
Field experiment method：In Hai Guanrukouchu 200ppm neutrality scale removers WCG- is continuously filled according to extra large pipe water
3355, water sampling detects the Ca in extra large tube inlet and outlet water sample2+、Mg2+、Fe2+Deng content.Testing result is shown in Table 5.
The neutral scale remover WCG-3355 scenes scale removal effect of table 5
The experiment is carried out at the scene, and Field Site Production System keeps normal production, adds before and after neutral scale remover WCG-3355,
Detect Ca in the water sample of extra large pipe exit and entry2+、Mg2+、Fe2+Deng content, be compared, until the change of these ions is little.From
After Site Detection result can be seen that the neutral scale remover WCG-3355 of addition, the dirt for being deposited on extra large inside pipe wall is dissolved out, inspection
The calcium ions and magnesium ions content for measuring outlet all substantially rises, and calcium ions and magnesium ions testing result is returned to non-dosing state after stopping dosing,
Outlet calcium ions and magnesium ions rise again after recovering dosing, and in whole experiment process, entrance can detect iron ion, and export in dosing
Period can't detect iron ion, illustrate that the neutral scale remover WCG-3355 does not have corrosivity in itself, the iron content chemical combination in deposit
Thing is effectively complexed.By the field experiment of nearly 20 days, extra large pipe inlet outlet pressure differential was decreased obviously, and Hai Guanzhong dirt is by effectively clear
Remove.Sea pipe and production system operate steadily during whole scale removal, and each production facility in downstream is not affected by influence.
Embodiment 6
The neutral scale remover WCG-3618 of oil-field flooding preparation and application：
Preparation method：Proportioning and method are the same as embodiment 4
Experimental subjects：With embodiment 4
Field experiment method：Neutral scale remover is continuously filled according to water injection rate in water filling surge tank, was added in the first week
Concentration is 200ppm, behind three weeks adding consistency be 100ppm.
Experimental result：
Before the experiment is carried out, live water injecting pump maximum pressure has reached the upper limit 12MPa of water injecting pump pressure requirements, note
Water can not reach being required with fluence for design.After one week of live continuous filling, water filling pump pressure have decreased to normally
10MPa, water filling pump pressure have decreased to below 8MPa, the actual note of related water injection well after low dosage continuously fills one month
Water has also met and exceeded the requirement with fluence design.
The present embodiment have described component is simple, prepare easily and fast efficiently, cost is cheap, scale removal efficiency high, uses
Measure it is low, to equipment non-hazardous, environmentally friendly, can not stop production the good effects such as scale removal, Small side effects.
Claims (2)
1. a kind of oilfield transportation system and the neutral scale remover of flood pattern, it is characterized in that：Oilfield transportation system and flood pattern
It is sodium nitrilo triacetate 10-20%, ethylene diamine tetra methylene phosphonic acid sodium 10-20% with the mass percent of neutral scale remover composition,
Diethylene-triamine pentaacetic acid 5-15%, tetrakis hydroxymetyl phosphonium sulfuric 5-10%, sodium potassium tartrate tetrahydrate 2-8%, ammonium citrate 0.1-
1.5%, AEO-9 0.5-1.5%, OEP-70 0.1-1.0%, remaining is water.
2. oilfield transportation system according to claim 1 and the neutral scale remover of flood pattern, it is characterized in that：Oil field gathering and transportation
System and flood pattern are using mechanical mixture sodium nitrilo triacetate, ethylene diamine tetra methylene phosphonic acid sodium, diethyl with neutral scale remover
Support pentaacetic acid, tetrakis hydroxymetyl phosphonium sulfuric, sodium potassium tartrate tetrahydrate, ammonium citrate, the mode of the AEO-9 and OEP-70 aqueous solution are made
's.
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Cited By (7)
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| CN108690588A (en) * | 2018-05-08 | 2018-10-23 | 北京鼐宝隆能源科技有限公司 | Environment-friendly type de-plugging of well system, preparation method and its method for removing blockage |
| CN109021949A (en) * | 2018-08-08 | 2018-12-18 | 青岛海通鑫瑞实业有限公司 | A kind of room temperature neutrality special descaling decoder and its preparation method and application |
| CN110697916A (en) * | 2019-10-17 | 2020-01-17 | 大庆石油管理局有限公司 | Multifunctional sulfide remover and preparation method thereof |
| CN111334272A (en) * | 2020-04-09 | 2020-06-26 | 克拉玛依翎昊科技有限责任公司 | Scale remover for water injection system of oil and gas field and preparation and application methods thereof |
| CN112079453A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Polymer salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN112079452A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Polycarboxylic acid salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN114085659A (en) * | 2020-08-24 | 2022-02-25 | 中国石油天然气股份有限公司 | Descaling blocking remover for high-temperature and high-pressure oil and gas wells and preparation method thereof |
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| CN108690588A (en) * | 2018-05-08 | 2018-10-23 | 北京鼐宝隆能源科技有限公司 | Environment-friendly type de-plugging of well system, preparation method and its method for removing blockage |
| CN109021949A (en) * | 2018-08-08 | 2018-12-18 | 青岛海通鑫瑞实业有限公司 | A kind of room temperature neutrality special descaling decoder and its preparation method and application |
| CN109021949B (en) * | 2018-08-08 | 2022-09-09 | 青岛海通鑫瑞实业有限公司 | Normal-temperature neutral special descaling stuck-freeing agent and preparation method and application thereof |
| CN110697916A (en) * | 2019-10-17 | 2020-01-17 | 大庆石油管理局有限公司 | Multifunctional sulfide remover and preparation method thereof |
| CN111334272A (en) * | 2020-04-09 | 2020-06-26 | 克拉玛依翎昊科技有限责任公司 | Scale remover for water injection system of oil and gas field and preparation and application methods thereof |
| CN114085659A (en) * | 2020-08-24 | 2022-02-25 | 中国石油天然气股份有限公司 | Descaling blocking remover for high-temperature and high-pressure oil and gas wells and preparation method thereof |
| CN112079453A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Polymer salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN112079452A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Polycarboxylic acid salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
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Application publication date: 20180202 |