CN106928956A - Neutral hard scale softener for ternary combination drive screw pump well - Google Patents
Neutral hard scale softener for ternary combination drive screw pump well Download PDFInfo
- Publication number
- CN106928956A CN106928956A CN201710120199.5A CN201710120199A CN106928956A CN 106928956 A CN106928956 A CN 106928956A CN 201710120199 A CN201710120199 A CN 201710120199A CN 106928956 A CN106928956 A CN 106928956A
- Authority
- CN
- China
- Prior art keywords
- sodium
- hard scale
- screw pump
- screw bolt
- alkali
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007935 neutral effect Effects 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001868 water Inorganic materials 0.000 claims abstract description 20
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 18
- 239000010452 phosphate Substances 0.000 claims abstract description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000003513 alkali Substances 0.000 claims abstract description 12
- 239000011206 ternary composite Substances 0.000 claims abstract description 11
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims abstract description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 22
- 239000011734 sodium Substances 0.000 claims description 22
- 229910052708 sodium Inorganic materials 0.000 claims description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 12
- 239000004902 Softening Agent Substances 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 10
- VHSHLMUCYSAUQU-UHFFFAOYSA-N 2-hydroxypropyl methacrylate Chemical compound CC(O)COC(=O)C(C)=C VHSHLMUCYSAUQU-UHFFFAOYSA-N 0.000 claims description 7
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 7
- 229940120146 EDTMP Drugs 0.000 claims description 6
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims 1
- DLEPCXYNAPUMDZ-UHFFFAOYSA-N butan-2-ylphosphonic acid Chemical compound CCC(C)P(O)(O)=O DLEPCXYNAPUMDZ-UHFFFAOYSA-N 0.000 claims 1
- -1 enol phosphate Chemical class 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- 239000003129 oil well Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- SZHQPBJEOCHCKM-UHFFFAOYSA-N 2-phosphonobutane-1,2,4-tricarboxylic acid Chemical class OC(=O)CCC(P(O)(O)=O)(C(O)=O)CC(O)=O SZHQPBJEOCHCKM-UHFFFAOYSA-N 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- LOGBRYZYTBQBTB-UHFFFAOYSA-N butane-1,2,4-tricarboxylic acid Chemical class OC(=O)CCC(C(O)=O)CC(O)=O LOGBRYZYTBQBTB-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- KFSLWBXXFJQRDL-UHFFFAOYSA-N peroxyacetic acid Substances CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F14/00—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes
- C23F14/02—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes by chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Lubricants (AREA)
Abstract
The invention belongs to the technical field of oilfield chemistry, and particularly belongs to a neutral hard scale softener for a ternary combination flooding screw pump well. The invention solves the problem that the screw pump well cannot be acid-washed after scaling due to excessive corrosion of the scale remover. The invention consists of organic phosphate, organic phosphonate, dispersant, alkali and water, and the weight percentages are as follows: 10-40% of organic phosphate, 2-10% of organic phosphate, 1-5% of dispersing agent, 1-3% of alkali and 50-80% of water. The invention can be applied to scale removal and blockage removal of the ternary composite drive screw pump well, completely softens and drops the scale substances attached to the parts such as the screw pump rotor and the like, and thoroughly removes the scale substances.
Description
Technical field
The invention belongs to technical field of oilfield chemistry, a kind of neutrality for ternary composite driving screw bolt well is particularly belonged to hard
Dirty softening agent.
Background technology
During water flooding, the generation of inorganic scale is the FAQs run into producing, due to reservoir
The presence of anisotropism, causes the difference of fluid properties in underground different layers position rock forming mineral composition and reservoir, when oil well is adopted
The underground fluid of several different layers position for going out mix in the wellbore or the temperature of various fluids, pressure and fluid in into dirt
When ion concentration etc. is varied widely, it is easy to produce inorganic scale, these dirty matter can be attached to screw bolt well pump barrel, rotor,
The positions such as sucker rod, cause the problems such as screw bolt well frequently occurs leakage, bar is disconnected, pump efficiency declines, and have a strong impact on production time efficiency, and
And increased production cost.
At present, the oil well for ternary composite driving fouling takes pickling measure scale removal, has preferable snaking to oil well
Effect, but the hydrogen ion in these pickling medicaments can occur fast reaction with screw pump rotor chrome plating coating, cause screw pump
Rotor chrome plating coating comes off, and space increases between stator, rotor, and pump efficiency declines after causing pickling snaking, has a strong impact on extraction effect
Rate, or even also result in the phenomenon of holddown.
The content of the invention
Soften it is an object of the invention to provide the dirty matter that can effectively make to be attached to the positions such as rotor, sucker rod, pump barrel,
Come off, remove, reduce screw bolt well because of the operations number of leakage, holddown etc., a kind of use of rate when extending the operation of screw bolt well
In the neutral hard scale softening agent of ternary composite driving screw bolt well.
The present invention is made up of organophosphorus ester, organic phosphonate, dispersant, alkali and water, and their percentage by weight is：Have
Machine phosphate 10~40%, organic phosphate 2~10%, dispersant 1~5%, alkali 1~3%, water 50~80%.
Described organophosphorus ester can be AA-E alcohol phosphoric acid ester copolymer, maleic acid-vinyl alcohol phosphate or
Any one in polyvinyl alcohol phosphate.
Described organic phosphonate can be the sodium of ATMP four, ATMP potassium, 2- phosphonobutanes-
Any one in the sodium of 1,2,4- tricarboxylic acids four or the sodium of ethylene diamine tetra methylene phosphonic acid five.
Described dispersant can be any one in Sodium Polyacrylate, poly sodium or HPMA.
Described alkali can be any one in NaOH, potassium hydroxide, sodium carbonate or potassium carbonate.
Wherein, above-mentioned organophosphate molecules formula is following molecular formula：
AA-E alcohol phosphate copolymer molecule formula：
.
Maleic acid-vinyl alcohol phosphate molecular formula：
Polyvinyl alcohol phosphate molecular formula：
Molten dirty mechanism of the invention is：Phosphate group in organic phosphate or organophosphorus ester can in neutral conditions with
Calcium ion is complexed, and improves the hydrophily of dirty matter, improves permeability so that in dispersant substantial amounts of carboxyl can further with
Calcium is complexed, and improves the dispersiveness of calcium dirt, and final induction inorganic crystal salt occurs crystal transfer, makes the calcium carbonate in dirty matter brilliant
Body is the aragonite crystal form of short texture by piling up fine and close calcite crystal transfer, so that dirty matter is loose, expansion, from extraction
Equipment surface comes off, and realizes snaking purpose.
Compared with the prior art the present invention has the following advantages：
1) and stratum compatibility is strong, the temperature, salinity, pH value accommodation to stratum are big, without wadding after mixing with formation fluid
Solidifying and precipitation；
2) do not reacted with the reservoir rock mineral of different blocks, static immersing under formation temperature
48 hours, produced without any corrosion and expansion；
3) more than 10 times of former dirty sample volume, are reached to the dispersion expansion multiple of Ternary composite drive well dirt sample；
4), soaked 48 hours under formation temperature, to screw pump rotor chrome plating coating not damaged, rotor coating does not fall off, and pump efficiency is not
Change, normal production is not influenceed, the onsite application requirement of screw bolt well snaking can be met；
5), corrosion rate is low, and the corrosion rate at 45 DEG C to N80 test pieces is less than 1g/ (m2·h)。
Specific embodiment：With reference to example, the present invention is further illustrated：It is by organophosphorus ester, organic phosphine
Hydrochlorate, dispersant, alkali and water are constituted, and their percentage by weight is：Organophosphorus ester 10~40%, organic phosphate 2~10%,
Dispersant 1~5%, alkali 1~3%, water 50~80%.
Described organophosphorus ester can be AA-E alcohol phosphoric acid ester copolymer, maleic acid-vinyl alcohol phosphate or
Any one in polyvinyl alcohol phosphate.
Described organic phosphonate can be the sodium of ATMP four, ATMP potassium, 2- phosphonobutanes-
Any one in the sodium of 1,2,4- tricarboxylic acids four or the sodium of ethylene diamine tetra methylene phosphonic acid five.
Described dispersant can be any one in Sodium Polyacrylate, poly sodium or HPMA.
Described alkali can be any one in NaOH, potassium hydroxide, sodium carbonate or potassium carbonate.
Preparation method of the invention is：
A, take organophosphorus ester in beaker, add water, stirring and dissolving.
B, take dispersant and be added to the water, stirring and dissolving.
C, two kinds of solution of the above a and b are mixed, organic phosphonate is added thereto to after stirring, stirred.
D, take alkali and be added to the water, using the solution obtained in aqueous slkali regulating step c after dissolving, regulation solution ph is
7.
Embodiment 1：It by AA-E alcohol phosphoric acid ester copolymer, the sodium of ATMP four, poly sodium,
NaOH, water are constituted, and their percentage by weight is：AA-E alcohol phosphoric acid ester copolymer 25%, the methene phosphine of amino three
Sour four sodium 5%, poly sodium 2%, NaOH 2%, water 66% are imitated this gives neutral hard scale softening agent field test
Really.
The present embodiment returns block screw bolt well C271-SP12 in the class of Daqing oil field West two and uses, and the well is because of dirt deposition
Screw bolt well electric current is caused to rise to 63A from 51A, oil well electric current recovers normal drop after onsite application neutrality hard scale softening agent treatment
To 52A, oil well is normally produced, and is occurred without leakage situation；Block screw bolt well N4-10- is returned on Daqing oil field Nan Si areas east
P3039 is used, and electric current drops to 37A by 48A after treatment, and oil well returns to normal production, and is occurred without leakage situation.Neutral hard scale is soft
Agent can make the dirty soft of the positions such as pump and oil pipe come off in the case where screw pump rotor chrome plating coating is not corroded, and meet spiral shell
The onsite application requirement of bar pump sump snaking.
Embodiment 2：It is by the maleic acid-vinyl alcohol phosphoric acid ester copolymer, sodium of 2- phosphonobutane -1,2,4- tricarboxylic acids four, poly-
PAA, potassium hydroxide, water are constituted, and their percentage by weight is：Maleic acid-vinyl alcohol phosphoric acid ester copolymer 25%, 2- phosphines
The sour sodium 5% of butane -1,2,4- tricarboxylic acids four, Sodium Polyacrylate 2%, potassium hydroxide 3%, water 65%.
Embodiment 3：It by polyvinyl alcohol phosphoric acid ester copolymer, HPMA, the sodium of ethylene diamine tetra methylene phosphonic acid five,
Sodium carbonate, water are constituted, and their percentage by weight is：Polyvinyl alcohol phosphate copolymer 1 5%, HPMA 1.5%,
The sodium 4% of ethylene diamine tetra methylene phosphonic acid five, sodium carbonate 2%, water 77.5%.
Embodiment 4：It by polyvinyl alcohol phosphoric acid ester copolymer, HPMA, the sodium of ethylene diamine tetra methylene phosphonic acid five,
Sodium carbonate, water are constituted, and their percentage by weight is：Polyvinyl alcohol phosphoric acid ester copolymer 40%, HPMA 3%, second
The sodium 8% of four methylenephosphonic acid of diamines five, NaOH 3%, water 46%.
Claims (5)
1. a kind of neutral hard scale softening agent for ternary composite driving screw bolt well, it is characterised in that：It by organophosphorus ester, have
Organic phosphonates, dispersant, alkali and water are constituted, and their percentage by weight is：Organophosphorus ester 10~40%, organic phosphate 2~
10%, dispersant 1~5%, alkali 1~3%, water 50~80%.
2. a kind of neutral hard scale softening agent for ternary composite driving screw bolt well according to claim 1, its feature exists
In：Described organophosphorus ester can be AA-E alcohol phosphoric acid ester copolymer, maleic acid-vinyl alcohol phosphate or poly- second
Any one in enol phosphate.
3. a kind of neutral hard scale softening agent for ternary composite driving screw bolt well according to claim 1, its feature exists
In：Described organic phosphonate can be the sodium of ATMP four, ATMP potassium, 2- phosphonobutane -1,2,
Any one in the sodium of 4- tricarboxylic acids four or the sodium of ethylene diamine tetra methylene phosphonic acid five.
4. a kind of neutral hard scale softening agent for ternary composite driving screw bolt well according to claim 1, its feature exists
In：Described dispersant can be any one in Sodium Polyacrylate, poly sodium or HPMA.
5. a kind of neutral hard scale softening agent for ternary composite driving screw bolt well according to claim 1, its feature exists
In：Described alkali can be any one in NaOH, potassium hydroxide, sodium carbonate or potassium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710120199.5A CN106928956A (en) | 2017-03-02 | 2017-03-02 | Neutral hard scale softener for ternary combination drive screw pump well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710120199.5A CN106928956A (en) | 2017-03-02 | 2017-03-02 | Neutral hard scale softener for ternary combination drive screw pump well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106928956A true CN106928956A (en) | 2017-07-07 |
Family
ID=59423645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710120199.5A Pending CN106928956A (en) | 2017-03-02 | 2017-03-02 | Neutral hard scale softener for ternary combination drive screw pump well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106928956A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641694A (en) * | 2018-04-27 | 2018-10-12 | 长江大学 | A kind of oil well descaling agent and preparation method thereof |
| CN109339741A (en) * | 2018-09-12 | 2019-02-15 | 中国石油天然气股份有限公司 | Neutral non-return circulation descaling process flow applicable to ASP flooding pumping well |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319010A (en) * | 2012-03-19 | 2013-09-25 | 常州市排水管理处 | Scale and corrosion inhibitor |
| US20150184061A1 (en) * | 2013-03-14 | 2015-07-02 | Cesi Chemical, Inc. | Methods and compositions for use in oil and/or gas wells |
| CN105502704A (en) * | 2016-01-04 | 2016-04-20 | 河北农业大学 | Composite corrosion and scale inhibitor |
-
2017
- 2017-03-02 CN CN201710120199.5A patent/CN106928956A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319010A (en) * | 2012-03-19 | 2013-09-25 | 常州市排水管理处 | Scale and corrosion inhibitor |
| US20150184061A1 (en) * | 2013-03-14 | 2015-07-02 | Cesi Chemical, Inc. | Methods and compositions for use in oil and/or gas wells |
| CN105502704A (en) * | 2016-01-04 | 2016-04-20 | 河北农业大学 | Composite corrosion and scale inhibitor |
Non-Patent Citations (1)
| Title |
|---|
| 梁涛: "固体缓释性防腐阻垢剂的研制及应用", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641694A (en) * | 2018-04-27 | 2018-10-12 | 长江大学 | A kind of oil well descaling agent and preparation method thereof |
| CN109339741A (en) * | 2018-09-12 | 2019-02-15 | 中国石油天然气股份有限公司 | Neutral non-return circulation descaling process flow applicable to ASP flooding pumping well |
| CN109339741B (en) * | 2018-09-12 | 2021-03-19 | 中国石油天然气股份有限公司 | Neutral non-return circulation descaling process flow applicable to ASP flooding pumping well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2737002B1 (en) | Well servicing fluid and method of servicing a well with the fluid | |
| CN101913712B (en) | Low-phosphorous environment-friendly scale inhibitor adapting to 'three-high' water quality and preparation thereof | |
| US20080312108A1 (en) | Compositions and process for recovering subterranean oil using green non-toxic biodegradable strong alkali metal salts of polymerized weak acids | |
| MX2014010101A (en) | Hybrid aqueous-based suspensions for hydraulic fracturing operations. | |
| CN103396781A (en) | Acidic aqueous solution containing chelating agent and use thereof | |
| CN103805152B (en) | A kind of anti-incrustation corrosion inhibitor for oil-field flooding and preparation method thereof | |
| CN103820150A (en) | Barium sulfate and strontium sulfate descaling agent and preparation method thereof | |
| CN102643635B (en) | Oil field stratum water injection increasing agent | |
| CN104302728B (en) | composition for removing scale deposit | |
| WO2021030505A1 (en) | Multifunctional additive for use in wellbore servicing | |
| CN106928956A (en) | Neutral hard scale softener for ternary combination drive screw pump well | |
| US3547817A (en) | Inhibition of scale formation | |
| CN108641694B (en) | Scale remover for oil well and preparation method thereof | |
| CN107973418B (en) | Composite corrosion and scale inhibitor, corrosion and scale inhibition method for oil field water and oil extraction method | |
| CN105219368B (en) | A kind of ternary compound oil drive antisludging agent and its application method | |
| CN105754567B (en) | Water injection well scale remover and preparation method and application thereof | |
| CN106833582A (en) | Oil field barium strontium dirt cleaning de-plugging agent composition and preparation method | |
| CN101671031B (en) | Preparation of inorganic silicophosphate oligomer and application thereof | |
| CN104726082B (en) | A kind of organic base descaling agent applied to ternary composite driving and preparation method thereof | |
| CN109354222A (en) | A kind of oil field neutrality scale removal dispersing agent | |
| CN109679613B (en) | Foam drainage agent composition and preparation method and application thereof | |
| Adegoke et al. | Understanding oilfield scale deposition and inhibition mechanisms for optimum management: A review | |
| CN104086005B (en) | A kind of phosphate rock floating device scale remover and preparation method | |
| CN103922491A (en) | Energy-saving scale inhibiting and removing anticorrosion compound medicament for steam boiler and preparation method of medicament | |
| CN109970219B (en) | Reverse osmosis scale inhibitor and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Application publication date: 20170707 |
|
| RJ01 | Rejection of invention patent application after publication |