CN106867490B - A kind of chelating de-plugging agent and preparation method thereof suitable for complicated fouling reservoir - Google Patents
A kind of chelating de-plugging agent and preparation method thereof suitable for complicated fouling reservoir Download PDFInfo
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- CN106867490B CN106867490B CN201710035213.1A CN201710035213A CN106867490B CN 106867490 B CN106867490 B CN 106867490B CN 201710035213 A CN201710035213 A CN 201710035213A CN 106867490 B CN106867490 B CN 106867490B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 167
- 239000002738 chelating agent Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000000740 bleeding effect Effects 0.000 claims abstract description 43
- 239000012153 distilled water Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 8
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims abstract description 8
- 102000018779 Replication Protein C Human genes 0.000 claims abstract description 7
- 108010027647 Replication Protein C Proteins 0.000 claims abstract description 7
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 230000008595 infiltration Effects 0.000 claims abstract description 5
- 238000001764 infiltration Methods 0.000 claims abstract description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Inorganic materials [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000013522 chelant Substances 0.000 claims description 54
- 150000001875 compounds Chemical class 0.000 claims description 44
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical compound NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 38
- 239000012190 activator Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- 239000002253 acid Substances 0.000 claims description 23
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 20
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 20
- 229920001577 copolymer Polymers 0.000 claims description 16
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 238000010792 warming Methods 0.000 claims description 13
- 229940120146 EDTMP Drugs 0.000 claims description 12
- 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 12
- 239000007789 gas Substances 0.000 claims description 12
- VKZRWSNIWNFCIQ-WDSKDSINSA-N (2s)-2-[2-[[(1s)-1,2-dicarboxyethyl]amino]ethylamino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)NCCN[C@H](C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-WDSKDSINSA-N 0.000 claims description 11
- CIEZZGWIJBXOTE-UHFFFAOYSA-N 2-[bis(carboxymethyl)amino]propanoic acid Chemical compound OC(=O)C(C)N(CC(O)=O)CC(O)=O CIEZZGWIJBXOTE-UHFFFAOYSA-N 0.000 claims description 10
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 claims description 9
- WHBMMWSBFZVSSR-UHFFFAOYSA-N 3-hydroxybutyric acid Chemical compound CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 claims description 8
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 8
- 229960001484 edetic acid Drugs 0.000 claims description 8
- 150000002191 fatty alcohols Chemical class 0.000 claims description 8
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims description 8
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 7
- JJJOZVFVARQUJV-UHFFFAOYSA-N 2-ethylhexylphosphonic acid Chemical compound CCCCC(CC)CP(O)(O)=O JJJOZVFVARQUJV-UHFFFAOYSA-N 0.000 claims description 7
- 239000000176 sodium gluconate Substances 0.000 claims description 7
- 229940005574 sodium gluconate Drugs 0.000 claims description 7
- 235000012207 sodium gluconate Nutrition 0.000 claims description 7
- -1 diethyl Alkene Chemical class 0.000 claims description 6
- MPDDTAJMJCESGV-CTUHWIOQSA-M (3r,5r)-7-[2-(4-fluorophenyl)-5-[methyl-[(1r)-1-phenylethyl]carbamoyl]-4-propan-2-ylpyrazol-3-yl]-3,5-dihydroxyheptanoate Chemical compound C1([C@@H](C)N(C)C(=O)C2=NN(C(CC[C@@H](O)C[C@@H](O)CC([O-])=O)=C2C(C)C)C=2C=CC(F)=CC=2)=CC=CC=C1 MPDDTAJMJCESGV-CTUHWIOQSA-M 0.000 claims description 4
- 229940125810 compound 20 Drugs 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229940125773 compound 10 Drugs 0.000 claims description 2
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- ITOFPJRDSCGOSA-KZLRUDJFSA-N (2s)-2-[[(4r)-4-[(3r,5r,8r,9s,10s,13r,14s,17r)-3-hydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-17-yl]pentanoyl]amino]-3-(1h-indol-3-yl)propanoic acid Chemical compound C([C@H]1CC2)[C@H](O)CC[C@]1(C)[C@@H](CC[C@]13C)[C@@H]2[C@@H]3CC[C@@H]1[C@H](C)CCC(=O)N[C@H](C(O)=O)CC1=CNC2=CC=CC=C12 ITOFPJRDSCGOSA-KZLRUDJFSA-N 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- JPZROSNLRWHSQQ-UHFFFAOYSA-N furan-2,5-dione;prop-2-enoic acid Chemical compound OC(=O)C=C.O=C1OC(=O)C=C1 JPZROSNLRWHSQQ-UHFFFAOYSA-N 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 230000008021 deposition Effects 0.000 abstract description 9
- 238000000151 deposition Methods 0.000 abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 description 24
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 20
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 14
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 14
- 229910019142 PO4 Inorganic materials 0.000 description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 13
- 239000010452 phosphate Substances 0.000 description 13
- 229940038384 octadecane Drugs 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 108091006146 Channels Proteins 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- JAXFJECJQZDFJS-XHEPKHHKSA-N gtpl8555 Chemical compound OC(=O)C[C@H](N)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@@H]1C(=O)N[C@H](B1O[C@@]2(C)[C@H]3C[C@H](C3(C)C)C[C@H]2O1)CCC1=CC=C(F)C=C1 JAXFJECJQZDFJS-XHEPKHHKSA-N 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 235000020681 well water Nutrition 0.000 description 3
- 239000002349 well water Substances 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- WJIUUKVQXQFABS-RGMNGODLSA-N C(C(=O)O)(=O)O.C(CC)N[C@@H](CCO)C(=O)O Chemical compound C(C(=O)O)(=O)O.C(CC)N[C@@H](CCO)C(=O)O WJIUUKVQXQFABS-RGMNGODLSA-N 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric Acid Chemical compound [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- BVCHZEOVPXACBQ-UHFFFAOYSA-N [Ca][Ba][Sr] Chemical compound [Ca][Ba][Sr] BVCHZEOVPXACBQ-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- GJYLKIZKRHDRER-UHFFFAOYSA-N calcium;sulfuric acid Chemical compound [Ca].OS(O)(=O)=O GJYLKIZKRHDRER-UHFFFAOYSA-N 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 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
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The chelating de-plugging agent and preparation method thereof that the present invention provides a kind of suitable for complicated fouling reservoir, chelating de-plugging agent consist of the following mass percentage components: chelating agent 5%~20%；Antisludging agent 0.5%~1%；Activator 1%~5%；Bleeding agent 0.5%~2%；Its surplus is distilled water.The complicated tamper de-plugging that the chelating de-plugging agent can be constituted the complicated inorganic scale such as most of carbonic acid dirt, sulfuric acid dirt and organic deposition in fouling oil reservoir near wellbore zone, and can inhibit the generation of dirt, extend action time.The chelating de-plugging agent is mainly for calcium carbonate, calcium sulfate, barium and strontium sulfate, the complicated dirt blocking such as iron sulfide, fouling blockage object is released by infiltration dispersion, chelating solubilising, nucleus distortion, dredge pit shaft and stratum filtration channel, reduce oil gas resistance to water-flow, oil gas well production is improved, water injection well injection pressure is reduced；The chelating de-plugging agent has certain inhibition and erodible, the complicated fouling reservoir blockages relieving condition of satisfaction simultaneously.
Description
Technical field
The chelating de-plugging agent and preparation method thereof that the invention belongs to a kind of suitable for complicated fouling reservoir, especially relates to
And the reservoir comprising Various Complex ingredient dirt body, such as carbonate scale, sulfate scale, indissoluble silicate, iron sulfide, pass through strength
Chelating solubilising releases tamper, reaches and effectively expands plug removal radius, reduces well water injection pressure, extends the work of steady output of oilwell phase
With.
Background technique
In the development process of oil gas field, fouling is be difficult to avoid that the problem of.During oil-gas mining, ground laminar flow
Body passes through preforation tunnel, pit shaft, well head, and the environmental pressure temperature where fluid is changed, and water flooding incrustation ion is original
Chemistry balance state is broken, and is led to inorganic mineralization and is generated dirt.Simultaneously during production of hydrocarbons, fine migration in reservoir
It is precipitated with heavy component and generates organic deposition, reduce oil and gas flow channel.During development of low-permeability oil reservoir, water injection technology is general
All over application to supplement stratum energy, recovery ratio is improved, but injects water and water flooding there are compatibilities poor, easily forms the sulphur of slightly solubility
Silicate dirt blocks water stream channel, water injection pressure is caused to increase, and water injection rate decline, development is shorted when serious for high pressure, and corresponds to oil
Well stratum energy reduces, and influences oilfield stimulation stable yields.
Fouling can make reservoir, pit shaft, production tube, underground equipment and ground oil-gas gathering and transportation equipment form deposition blocking,
The economic benefit of oil field development is seriously affected.It is directed to reservoir fouling at present, using acidification, this kind offensiveness de-plugging mode
Erodable carbonate, but removing sulfate deposition cannot be solved, and there are the excessive corrosion near wellbore zone, deep poor processing effect, effects
The disadvantages of limited time.
The existing de-plugging agent for releasing compound scale needs to be pumped into pretreatment fluid and is converted into carbonic acid dirt to sulfuric acid dirt, then pumps
Become owner for the treatment of acid solution solution depollution, this kind of de-plugging mode can release sulfate compound scale, but there are complicated process steps, when closing well
Between long, acid solution secondary precipitation problem.
Summary of the invention
There are when complicated process steps, closing well for the de-plugging agent that present invention aim to address existing for releasing compound scale
Between it is long, acid solution secondary precipitation and plugging removal effect is poor the problems such as.
For this purpose, the present invention provides a kind of chelating de-plugging agent suitable for complicated fouling reservoir, the chelating de-plugging agent by
The group of following mass percent is grouped as:
Chelating agent 5%~20%；
Antisludging agent 0.5%~1%；
Activator 1%~5%；
Bleeding agent 0.5%~2%；
Its surplus is distilled water.
The chelating agent consists of the following mass percentage components:
Amino carboxylic acid quasi-chelate compound 50%~60%；
Hydroxycarboxylic acid quasi-chelate compound 10%~20%；
Organic phosphonate quasi-chelate compound 20%~30%.
The antisludging agent is made of one or both of copolymer of maleic anhydride and acrylic acid, poly-epoxy succinic acid.
The activator is by one in six oxygen ring octadecane -2- methanol of 1,4,7,10,13,16-, dibenzo -15- crown ether -5
Kind or two kinds of compositions.
The bleeding agent is by one or both of tridecanol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether group
At.
The amino carboxylic acid quasi-chelate compound be ethylenediamine tetra-acetic acid, diethylene triamine pentacetic acid (DTPA), methylglycine diacetic acid,
Three kinds in ethylenediamine disuccinic acid, 2- iminodisuccinic acid or several compositions；The hydroxycarboxylic acid quasi-chelate compound
For one or more of sodium gluconate, dyhydrobutanedioic acid, beta-hydroxy-butanoic acid, penta 3 acid of 3- hydroxyl -1,3,5- composition；
The organic phosphonate quasi-chelate compound is l- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid, ethylenediamine tetramethylene phosphonic acid
One or more of composition.
A kind of preparation method of the chelating de-plugging agent suitable for complicated fouling reservoir, the chelating de-plugging agent and its quality are matched
Than including chelating agent 5%~20%, antisludging agent 0.5%~1%, activator 1%~5%, bleeding agent 0.5%~2%, surplus is distillation
Water,
Specific step is as follows: distilled water being added into reaction kettle, and is warming up to 50~55 DEG C, then by chelating agent, activation
Agent, bleeding agent, antisludging agent sequentially add in reaction kettle, every that a kind of 20~30min of material stirring is added, and stir after all material to be added
30min completes the preparation of chelating de-plugging agent；
The additional amount of above-mentioned raw materials presses formula ratio addition.
The chelating agent consists of the following mass percentage components: amino carboxylic acid quasi-chelate compound 50%~60%, hydroxyl carboxylic
Acids chelating agent 10%~20%, organic phosphonate quasi-chelate compound 20%~30%, amino carboxylic acid quasi-chelate compound be ethylenediamine tetra-acetic acid,
Diethylene triamine pentacetic acid (DTPA), methylglycine diacetic acid, ethylenediamine disuccinic acid, in 2- iminodisuccinic acid in three kinds
Or several compositions, hydroxycarboxylic acid quasi-chelate compound are sodium gluconate, dyhydrobutanedioic acid, beta-hydroxy-butanoic acid, 3- hydroxyl -1,3,5-
One or more of penta 3 acid composition, organic phosphonate quasi-chelate compound are l- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid, ethylenediamine tetraacetic
One or more of methylene phosphonic acid composition；
The antisludging agent is made of one or both of copolymer of maleic anhydride and acrylic acid, poly-epoxy succinic acid；
The activator is by one in six oxygen ring octadecane -2- methanol of 1,4,7,10,13,16-, dibenzo -15- crown ether -5
Kind or two kinds of compositions；
The bleeding agent is by one or both of tridecanol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether group
At.
Beneficial effects of the present invention: this chelating de-plugging agent and its system for being suitable for complicated fouling reservoir provided by the invention
Preparation Method can be constituted the complicated inorganic scale such as most of carbonic acid dirt, sulfuric acid dirt and organic deposition in fouling oil reservoir near wellbore zone
Complicated tamper de-plugging, and can inhibit the generation of dirt, extend action time.The chelating de-plugging agent is mainly for calcium carbonate, sulfuric acid
Calcium, barium and strontium sulfate, the complicated dirt blocking such as iron sulfide release fouling blockage by infiltration dispersion, chelating solubilising, nucleus distortion
Object, dredging pit shaft and stratum filtration channel, reduce oil gas resistance to water-flow, improve oil gas well production, reduce water injection well injection pressure；
The chelating de-plugging agent has certain inhibition and erodible, the complicated fouling reservoir blockages relieving condition of satisfaction simultaneously.
The present invention is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is that de-plugging agent is chelated in embodiment 8 under the conditions of 60 DEG C to the schematic diagram of the chelating result of different ions.
Fig. 2 is that de-plugging agent is chelated in embodiment 8 under the conditions of 60 DEG C, 4h to the schematic diagram of the corrosion effect of different material.
Specific embodiment
For oil/gas well by long-term exploitation, water content, which persistently rises, forms inorganic dirt deposition, and fine migration and heavy component are analysed
The organic depositions such as collagen pitch are produced, oil and gas flow channel is blocked.Water injection well passes through long-term injecting water, injects water and stratum compatible
Property it is poor, cause reservoir deep to be slowly formed inorganic scale, block water drive channel, the present invention provides one kind to be suitable for complicated knot thus
The chelating de-plugging agent of dirty reservoir, the chelating de-plugging agent consist of the following mass percentage components:
Chelating agent 5%~20%；
Antisludging agent 0.5%~1%；
Activator 1%~5%；
Bleeding agent 0.5%~2%；
Its surplus is distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent；
The additional amount of above-mentioned raw materials presses formula ratio addition.
The chelating agent consists of the following mass percentage components: amino carboxylic acid quasi-chelate compound 50%~60%, hydroxyl carboxylic
Acids chelating agent 10%~20%, organic phosphonate quasi-chelate compound 20%~30%, chelating agent are mixed to prepare by three of the above component,
Amino carboxylic acid quasi-chelate compound is ethylenediamine tetra-acetic acid, diethylene triamine pentacetic acid (DTPA), methylglycine diacetic acid, two amber of ethylenediamine
Three kinds or several compositions in acid, 2- iminodisuccinic acid, hydroxycarboxylic acid quasi-chelate compound are sodium gluconate, dihydroxy
Succinic acid, beta-hydroxy-butanoic acid, 3- hydroxyl -1,3, one or more of penta 3 acid of 5- composition, organic phosphonate quasi-chelate compound are
One or more of l- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid, ethylenediamine tetramethylene phosphonic acid composition；
The antisludging agent is made of one or both of copolymer of maleic anhydride and acrylic acid, poly-epoxy succinic acid；It is described
Activator is by one or both of six oxygen ring octadecane -2- methanol of 1,4,7,10,13,16-, dibenzo -15- crown ether -5 group
At；The bleeding agent is made of one or both of tridecanol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether.
The above dosage component is commercial chemicals.
It should be noted that in the present invention, (1) bleeding agent (tridecanol polyoxyethylene ether phosphate, fatty alcohol polyoxy second
Alkene ether) one of or two kinds can reduce surface/interface tension, wash Residual oil, dissolved organic matter, rapid osmotic, fat
The molecular weight of alcohol polyoxyethylene ether is 1199.55.(2) (ethylenediamine tetra-acetic acid, diethylene triamine pentacetic acid (DTPA), methyl are sweet for chelating agent
Propylhomoserin oxalic acid, ethylenediamine disuccinic acid, 2- iminodisuccinic acid, sodium gluconate, dyhydrobutanedioic acid, beta-hydroxy fourth
Acid, 3- hydroxyl -1,3, the acid of 5- penta 3, l- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid, ethylenediamine tetramethylene phosphonic acid) in a variety of energy
Metal ion in enough effectively chelating inorganic scales, inhibits secondary precipitation to generate with nucleus distortion shape and charge dispersion；(3) activator
One or both of (six oxygen ring octadecane -2- methanol of 1,4,7,10,13,16-, dibenzo -15- crown ether -5) can be to indissoluble
The metal ion of dirt enhances chelation, forms the more stable structure of thermodynamics, reduces calcium barium strontium dirt content.(4) antisludging agent
It is that stratum can be adsorbed on by one or both of copolymer of maleic anhydride and acrylic acid, poly-epoxy succinic acid, inhibits the shape of dirt
At copolymer of maleic anhydride and acrylic acid is a kind of macromolecule builder as substitute for phosphate, is a kind of one kind of anti-incrustation corrosion inhibitor, it can be chelated
Ca2+、Mg2+And has the function of soft water, and it is anti-that dirt can be suspended in water and organize inorganic salts crystallization have in body surface
Resedimentation, copolymer of maleic anhydride and acrylic acid have chelating and divergent function simultaneously, improve the dispersibility of chelate,
Middle poly-epoxy succinic acid relative molecular mass: 800-1700 has both scale inhibitor double effects, and biodegradability is got well and is applicable in
In high-alkali, high metal content water system.
Chelating de-plugging agent provided by the invention is mainly for calcium carbonate, calcium sulfate, barium and strontium sulfate, the complicated dirt such as iron sulfide
Blocking releases fouling blockage object, dredging pit shaft and stratum filtration channel by infiltration dispersion, chelating solubilising, nucleus distortion, reduces
Oil gas resistance to water-flow improves oil gas well production, reduces water injection well injection pressure.The chelating de-plugging agent is adapted to complicated fouling reservoir
Chelating de-plugging agent the complicated inorganic scale such as most of carbonic acid dirt, sulfuric acid dirt and organic deposition can be constituted in fouling oil reservoir near wellbore zone
Complicated tamper de-plugging, and can inhibit dirt generation, extend action time.Construction uses single slug, simplifies working procedure,
Save the construction time.Reach and effectively expand plug removal radius, reduce well water injection pressure, extends the effect of steady output of oilwell phase.
Embodiment 1:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 5%, antisludging agent 0.5%, activator 1%, bleeding agent 0.5%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: ethylenediamine tetra-acetic acid (accounts for amino carboxylic acid
Quasi-chelate compound weight percent be 30%), diethylene triamine pentacetic acid (DTPA) (accounting for amino carboxylic acid quasi-chelate compound weight percent is 30%),
The mixture 50% of methylglycine diacetic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), sodium gluconate 20%,
L- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid 30%；Antisludging agent is copolymer of maleic anhydride and acrylic acid；Activator is 1,4,7,10,13,
Six oxygen ring octadecane -2- methanol of 16-；Bleeding agent is tridecanol polyoxyethylene ether phosphate.
Embodiment 2:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 6%, antisludging agent 0.6%, activator 1.5%, bleeding agent 0.7%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: diethylene triamine pentacetic acid (DTPA) (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is methylglycine diacetic acid
30%), the mixture 50% of ethylenediamine disuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), dihydroxy fourth two
Acid 20%, ethylenediamine tetramethylene phosphonic acid 30%；Antisludging agent is poly-epoxy succinic acid copolymer；Activator is dibenzo -15- hat
Ether -5；Bleeding agent is fatty alcohol polyoxyethylene ether.
Embodiment 3:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 8%, antisludging agent 0.7%, activator 2.3%, bleeding agent 0.9%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: methylglycine diacetic acid (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is ethylenediamine disuccinic acid
30%), the mixture 57% of 2- iminodisuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), beta-hydroxy fourth
Acid 15%, l- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid 28%；Antisludging agent is copolymer of maleic anhydride and acrylic acid, poly-epoxy succinic acid；
Activator is six oxygen ring octadecane -2- methanol of 1,4,7,10,13,16-, dibenzo -15- crown ether -5；Bleeding agent is that tridecanol is poly-
Ethylene oxide ether phosphate, fatty alcohol polyoxyethylene ether.
Embodiment 4:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 10%, antisludging agent 0.79%, activator 3.4%, bleeding agent 1%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: 2- iminodisuccinic acid (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is ethylenediamine disuccinic acid
30%), the mixture 55% of methylglycine diacetic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), hydroxyl -1 3-,
3,5- penta 3 acid 15%, ethylenediamine tetramethylene phosphonic acid 30%；Antisludging agent is copolymer of maleic anhydride and acrylic acid；Activator is 1,
Six oxygen ring octadecane -2- methanol of 4,7,10,13,16-；Bleeding agent is tridecanol polyoxyethylene ether phosphate.
Embodiment 5:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 13%, antisludging agent 0.83%, activator 4%, bleeding agent 1.5%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: ethylenediamine tetra-acetic acid (accounts for amino carboxylic acid
Quasi-chelate compound weight percent be 30%), methylglycine diacetic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 30%),
The mixture 52% of 2- iminodisuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), 3- hydroxyl -1,3,5-
Penta 3 acid 20%, ethylenediamine tetramethylene phosphonic acid 28%；Antisludging agent is poly-epoxy succinic acid；Activator is dibenzo -15- crown ether -
5；Bleeding agent is fatty alcohol polyoxyethylene ether.
Embodiment 6:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 17%, antisludging agent 1%, activator 4.5%, bleeding agent 1.8%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: 2- iminodisuccinic acid (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is diethylene triamine pentacetic acid (DTPA)
30%), the mixture 55% of ethylenediamine disuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), 3- hydroxyl -1,3,
Penta 3 acid 15% of 5-, ethylenediamine tetramethylene phosphonic acid 30%；Antisludging agent is copolymer of maleic anhydride and acrylic acid；Activator is 1,4,
Six oxygen ring octadecane -2- methanol of 7,10,13,16-；Bleeding agent is tridecanol polyoxyethylene ether phosphate.
Embodiment 7:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 19%, antisludging agent 0.5%, activator 5%, bleeding agent 2%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: diethylene triamine pentacetic acid (DTPA) (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is 2- iminodisuccinic acid
30%), the mixture 58% of ethylenediamine disuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), sodium gluconate
15%, ethylenediamine tetramethylene phosphonic acid 27%；Antisludging agent is copolymer of maleic anhydride and acrylic acid, poly-epoxy succinic acid；Activator is
Six oxygen ring octadecane -2- methanol of 1,4,7,10,13,16-, dibenzo -15- crown ether -5；Bleeding agent is tridecanol polyoxyethylene ether
Phosphate.
Embodiment 8:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 20%, antisludging agent 1%, activator 5%, bleeding agent 2%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: diethylene triamine pentacetic acid (DTPA) (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is 2- iminodisuccinic acid
30%), the mixture 59% of ethylenediamine disuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), dihydroxy fourth two
Acid 16%, ethylenediamine tetramethylene phosphonic acid 25%；Antisludging agent is copolymer of maleic anhydride and acrylic acid；Activator is 1,4,7,10,
Six oxygen ring octadecane -2- methanol of 13,16-, dibenzo -15- crown ether -5；Bleeding agent is tridecanol polyoxyethylene ether phosphate.
Embodiment 9:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 15%, antisludging agent 0.8%, activator 3%, bleeding agent 1.4%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: methylglycine diacetic acid (accounts for amino
Carboxylic acid quasi-chelate compound weight percent be 30%), (account for amino carboxylic acid quasi-chelate compound weight percent is 2- iminodisuccinic acid
30%), the mixture 51% of ethylenediamine disuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), dihydroxy fourth two
Acid 20%, ethylenediamine tetramethylene phosphonic acid 29%；Antisludging agent is copolymer of maleic anhydride and acrylic acid；Activator is 1,4,7,10,
Six oxygen ring octadecane -2- methanol of 13,16-；Bleeding agent is tridecanol polyoxyethylene ether phosphate.
Embodiment 10:
A kind of chelating de-plugging agent suitable for complicated fouling reservoir is present embodiments provided, the chelating de-plugging agent is by following
The group of mass percent is grouped as:
Chelating agent 11%, antisludging agent 0.65%, activator 1.7%, bleeding agent 1.57%, surplus are distilled water.
The preparation method of above-mentioned chelating de-plugging agent, the specific steps are as follows: distilled water is added into reaction kettle, and is warming up to 50
~55 DEG C, then chelating agent, activator, bleeding agent, antisludging agent are sequentially added in reaction kettle, it is every be added a kind of material stirring 20~
30min stirs 30min after all material to be added, completes the preparation of chelating de-plugging agent.
Chelating agent is to consist of the following mass percentage components in the present embodiment: ethylenediamine tetra-acetic acid (accounts for amino carboxylic acid
Quasi-chelate compound weight percent be 30%), 2- iminodisuccinic acid (accounting for amino carboxylic acid quasi-chelate compound weight percent is 30%),
The mixture 60% of diethylene triamine pentacetic acid (DTPA) (accounting for amino carboxylic acid quasi-chelate compound weight percent is 40%), dyhydrobutanedioic acid
17%, ethylenediamine tetramethylene phosphonic acid 23%；Antisludging agent is copolymer of maleic anhydride and acrylic acid；Activator is 1,4,7,10,13,
Six oxygen ring octadecane -2- methanol of 16-；Bleeding agent is tridecanol polyoxyethylene ether phosphate.
Embodiment 11:
The proportion for the chelating de-plugging agent that the present embodiment is provided according to 1~embodiment of embodiment 10, by chelating de-plugging agent 60
DEG C, under the conditions of 4h, for marble, magnesium carbonate, calcium sulfate, carried out dissolved corrosion test respectively, the results are shown in Table 1.
Table 1
By upper table combination Fig. 2 it is found that the chelating de-plugging agent for being adapted to complicated fouling reservoir in above embodiments 60 DEG C,
It is 52.60%, magnesium carbonate corrosion rate 36.26% to the maximum corrosion rate of marble under the conditions of 4h, calcium sulfate corrosion rate is 60.35%,
Meet complicated fouling reservoir blockages relieving condition, illustrating to chelate de-plugging agent can be in fouling oil reservoir near wellbore zone by most of carbonic acid dirt, sulphur
The complicated tamper de-plugging that the complexity inorganic scale such as sour dirt and organic deposition are constituted, and can inhibit the generation of dirt, extend action time, separately
Outside, the chelating de-plugging agent illustrates that this chelating de-plugging agent can pass through strength to the sequestering power of different ions according to Fig. 1
Solubilization Various Complex ingredient dirt body, including carbonate scale, sulfate scale, indissoluble silicate, iron sulfide etc. are chelated, reaching has
Effect expands plug removal radius, reduces well water injection pressure, extends the effect of steady output of oilwell phase.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.The portion that the present embodiment does not describe in detail
The well-known components and common structure or conventional means of part and the structure category industry, do not describe one by one here.
Claims (2)
1. a kind of chelating de-plugging agent suitable for complicated fouling reservoir, which is characterized in that the chelating de-plugging agent is by following quality
The group of percentage is grouped as: chelating agent 5%~20%；Antisludging agent 0.5%~1%；Activator 1%~5%；Bleeding agent 0.5%~2%；Its
Surplus is distilled water；The chelating agent consists of the following mass percentage components: amino carboxylic acid quasi-chelate compound 50%~60%；Hydroxyl
Yl carboxylic acid quasi-chelate compound 10%~20%；Organic phosphonate quasi-chelate compound 20%~30%；The antisludging agent is by maleic acid anhydride-propenoic acid
One or both of copolymer, poly-epoxy succinic acid composition；The activator is by six oxygen ring 18 of 1,4,7,10,13,16-
One or both of alkane -2- methanol, dibenzo -15- crown ether -5 composition；The bleeding agent is by tridecanol polyoxyethylene ether phosphoric acid
One or both of ester, fatty alcohol polyoxyethylene ether composition；The amino carboxylic acid quasi-chelate compound is ethylenediamine tetra-acetic acid, diethyl
Alkene pentaacetic acid, methylglycine diacetic acid, ethylenediamine disuccinic acid, in 2- iminodisuccinic acid in three kinds or several
Kind composition；The hydroxycarboxylic acid quasi-chelate compound be sodium gluconate, dyhydrobutanedioic acid, beta-hydroxy-butanoic acid, hydroxyl -1,3 3-,
One or more of penta 3 acid of 5- composition；The organic phosphonate quasi-chelate compound be l- hydroxy ethylene-l, l- di 2 ethylhexyl phosphonic acid,
One or more of ethylenediamine tetramethylene phosphonic acid composition；
The chelating de-plugging agent passes through infiltration point for the complexity dirt blocking of calcium carbonate, calcium sulfate, barium and strontium sulfate and iron sulfide
It dissipates, chelating solubilising, nucleus distortion releasing fouling blockage object, dredging pit shaft and stratum filtration channel, reduces oil gas resistance to water-flow, mention
High oil gas well production reduces water injection well injection pressure.
2. a kind of preparation method of chelating de-plugging agent suitable for complicated fouling reservoir according to claim 1, feature
It is, the chelating de-plugging agent and its quality proportioning include chelating agent 5%~20%, antisludging agent 0.5%~1%, activator 1%~5%,
Bleeding agent 0.5%~2%, surplus are distilled water,
Specific step is as follows: distilled water being added into reaction kettle, and is warming up to 50~55 DEG C, then by chelating agent, activator, infiltration
Saturating agent, antisludging agent sequentially add in reaction kettle, every that a kind of 20~30min of material stirring is added, and stir after all material to be added
30min completes the preparation of chelating de-plugging agent；
The additional amount of above-mentioned raw materials presses formula ratio addition.
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PE20070477A1 (en) * | 2005-08-02 | 2007-05-16 | Shell Int Research | PROCESS FOR THE PREPARATION OF ALKYLENE CARBONATES |
| CN103834377A (en) * | 2014-03-11 | 2014-06-04 | 范金彪 | Scale prevention blocking remover for ternary composite water dependent well |
| CN103820150A (en) * | 2014-03-14 | 2014-05-28 | 西安石油大学 | Barium sulfate and strontium sulfate descaling agent and preparation method thereof |
| CN104987858B (en) * | 2015-07-24 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | Barium strontium scale washing agent and preparation method thereof |
| CN106147735A (en) * | 2016-07-01 | 2016-11-23 | 中国石油集团渤海钻探工程有限公司 | A kind of barium strontium calcium scale remover and preparation method thereof |
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Effective date of registration: 20201029 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710016 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Patentee before: CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED ENGINEERING TECHNOLOGY Research Institute |