CN102174315B - Scale removing and preventing agent for oil well in later period of tertiary oil recovery - Google Patents
Scale removing and preventing agent for oil well in later period of tertiary oil recovery Download PDFInfo
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- CN102174315B CN102174315B CN 201110057778 CN201110057778A CN102174315B CN 102174315 B CN102174315 B CN 102174315B CN 201110057778 CN201110057778 CN 201110057778 CN 201110057778 A CN201110057778 A CN 201110057778A CN 102174315 B CN102174315 B CN 102174315B
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- oil well
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- industrial goods
- oil recovery
- tertiary
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- 239000003129 oil well Substances 0.000 title claims abstract description 43
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 title abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 36
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 32
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 16
- 229920000141 poly(maleic anhydride) Polymers 0.000 claims abstract description 14
- VPQBLCVGUWPDHV-UHFFFAOYSA-N sodium selenide Chemical compound [Na+].[Na+].[Se-2] VPQBLCVGUWPDHV-UHFFFAOYSA-N 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 12
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 12
- 235000019154 vitamin C Nutrition 0.000 claims abstract description 12
- 239000011718 vitamin C Substances 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 18
- 239000002455 scale inhibitor Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 150000007513 acids Chemical class 0.000 claims description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 11
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 210000003298 dental enamel Anatomy 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 101000777220 Homo sapiens Ubiquitin carboxyl-terminal hydrolase 3 Proteins 0.000 claims 2
- 102100031287 Ubiquitin carboxyl-terminal hydrolase 3 Human genes 0.000 claims 2
- 101000939517 Homo sapiens Ubiquitin carboxyl-terminal hydrolase 2 Proteins 0.000 abstract description 10
- 102100029643 Ubiquitin carboxyl-terminal hydrolase 2 Human genes 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 9
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 abstract 1
- 229930003268 Vitamin C Natural products 0.000 abstract 1
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Polymers OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 abstract 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- FVZVCSNXTFCBQU-UHFFFAOYSA-N phosphanyl Chemical group [PH2] FVZVCSNXTFCBQU-UHFFFAOYSA-N 0.000 abstract 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011734 sodium Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011669 selenium Substances 0.000 description 4
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 229940120146 EDTMP Drugs 0.000 description 2
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 229920005601 base polymer Polymers 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000536 complexating effect Effects 0.000 description 2
- 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 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 150000003009 phosphonic acids Chemical class 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- -1 phosphorus compound Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000003352 sequestering agent Substances 0.000 description 2
- KWYJDIUEHHCHCZ-UHFFFAOYSA-N 3-[2-[bis(2-carboxyethyl)amino]ethyl-(2-carboxyethyl)amino]propanoic acid Chemical class OC(=O)CCN(CCC(O)=O)CCN(CCC(O)=O)CCC(O)=O KWYJDIUEHHCHCZ-UHFFFAOYSA-N 0.000 description 1
- FCKYPQBAHLOOJQ-UHFFFAOYSA-N Cyclohexane-1,2-diaminetetraacetic acid Chemical class OC(=O)CN(CC(O)=O)C1CCCCC1N(CC(O)=O)CC(O)=O FCKYPQBAHLOOJQ-UHFFFAOYSA-N 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- 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 description 1
- YMEDZTGTVHUJLI-UHFFFAOYSA-N P.P.[C] Chemical compound P.P.[C] YMEDZTGTVHUJLI-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 235000021321 essential mineral Nutrition 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- ZJAOAACCNHFJAH-UHFFFAOYSA-N phosphonoformic acid Chemical compound OC(=O)P(O)(O)=O ZJAOAACCNHFJAH-UHFFFAOYSA-N 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
Abstract
The scale removing and preventing agent for oil well in the later stage of tertiary oil recovery is used in removing and preventing scale in oil well in the later stage of tertiary oil recovery. Is characterized in that: the weight percentages of the components are as follows: hydroxypentamethylenephosphonic acid: 15.2-17.8%; hydrochloric acid: 3.5-4.0%; hydrofluoric acid: 3.0-3.2%; vitamin C: 0.05-0.06%; phosphino polymaleic anhydride antiscalant: 21.5-24%; urotropin: 2.5-3.0%; USP2 alkyl is pentadecyl: 5.7-6.2%; c12-C18Fatty alcohol polyoxyethylene (10) ether: 2.5-3.0%; a sodium selenide aqueous solution with a concentration of 0.3-0.5%: 0.001-0.0015%; methanol: 15-20%; the balance of water; the sum of the weight percentages of the components is 100 percent. The effect is as follows: when the oil well is daily maintained, the scale deposit of the oil well can be removed or slowed down and the detection can be prolonged by adding the oil well in the later stage of tertiary oil recoveryAnd (4) pump cycle. The produced liquid is added into 50-75 mg of oil well annulus in each liter of produced liquid, and the pump inspection period of the oil well can be prolonged by 1-2 times.
Description
Technical field
The invention belongs to the petroleum recovering technical field, relate in particular to a kind of tertiary oil recovery later stage oil well cleaning antiscale, is a kind of oil well dirt deposition after the tertiary oil recovery of removing or slow down, and simultaneously steel is had the galvanic protection effect, prolongs the oil well cleaning antiscale of pump detection period.
Background technology
Tertiary oil recovery technology is the important means that the oil field late high water content period further improves recovery ratio.But deeply implemented to expose the problem of oil well fouling along with tertiary oil recovery technology, the oil well fouling can have a strong impact on normal oil recovery production.Essential mineral composition in the oil well dirt is amorphous silica, the spherical calcite of six sides, common calcite and barium sulfate etc.; Less important mineral are clastic quitz, chip feldspar, detrital clay particle and pyrite etc.; In addition, also has a small amount of trace quantity mineral.The oil well scale problems has become the biggest obstacle of implementing tertiary oil recovery technology after the tertiary oil recovery.
At present, the chemical scale inhibition agent roughly is divided three classes: i.e. aminopolycanboxylic acid's salt, phosphorus compound class and organic polymer class.Aminopolycanboxylic acid's salt is the low molecule sequestrant of a class, such as disodium EDTA (EDTA), CDTA salt (DCTA), ethylenediamine tetrapropionic acid(EDTP) salt (EDTP) etc.This class sequestrant is low molecular compound, and Chelate stability constants is large, can be used for comparatively high temps, but because consumption is large, and cost is high, its application is restricted.Phosphorus compound class scale inhibitor mostly is the organic multicomponent phosphonic acids.Such as the ethylene diamine tetra methylene phosphonic acid (EDTMP) of methylenephosphonic acid type, with the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) of carbon diphosphine acid type, 4 of carboxy phosphonic acid type, 4-'-diphosphono-1,7-pimelic acid etc.Organic multicomponent phosphonic acid based scale inhibitor have consumption little, can bear comparatively high temps, calcium carbonate is had the higher advantages such as antiscale efficient, more in field use, relatively poor to the antiscaling effect of barium sulfate, Strontium Sulphate.The organic polymer scale inhibitor mainly is polymaleic anhydride and polyacrylic acid and their multipolymer.The antiscale mechanism of this base polymer be on the polymer molecular chain carboxyl can with the polyvalent metal ion complexing, the complexing of a plurality of carboxyls then forms inner complex and has anti-scaling property.This base polymer is to the too late organic multicomponent phosphonic acids of the antiscale efficient of calcium carbonate, calcium sulfate, though barium sulfate, Strontium Sulphate are had antiscaling effect, efficient is lower.
Summary of the invention
The objective of the invention is: a kind of tertiary oil recovery later stage oil well cleaning antiscale is provided, when the oil well routine maintenance, adds tertiary oil recovery later stage oil well, can remove or slow down the oil well dirt deposition, prolong pump detection period.
The technical solution used in the present invention is:
One, raw material and the prescription of tertiary oil recovery later stage oil well cleaning antiscale:
Raw material comprises:
1, hydroxyl five methylenephosphonic acids (industrial goods), " Gudao oilfield ternary composite driving fouling Analysis on Mechanism and the preventing fouling " that the people such as Fu Jian write is published in the 57th~58 page of the 1st phase in 2004 " Xi'an Petroleum University's journal (natural science edition) ".
2, hydrochloric acid (HCl);
3, hydrofluoric acid (HF);
4, vitamins C (industrial goods); It is a kind of water miscible strong antioxidant.
5, phosphino-polymaleic anhydride scale inhibitor (industrial goods), " the phosphino-polymaleic anhydride scale inhibitor " that the people such as Yang Li write is published in the 137th~140 page of the 2nd phase in 1998 " oilfield chemistry ".
Manufacturer: Sweet natural gas research institute of Southwest Oil company.
6, urotropine (industrial goods);
7, the USP2 alkyl is pentadecyl (industrial goods), another name chlorination-1-(2,3-dihydroxypropyl)-1-(2-sulphur is urinated basic ethyl)-2-pentadecyl tetrahydroglyoxaline phosphoric acid ester sodium.
Huang Hongzhou edits Chinese tensio-active agent overview one book, the 556th page of Chemical Industry Press.
Purposes: contain S, P amphoteric imidazoline inhibiter.
Manufacturer: department of chemistry of Qingdao Marine University.
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods).Huang Hongzhou edits Chinese tensio-active agent overview one book, the 327th page of Chemical Industry Press.
Character: for pale yellow oily liquid body or mashed prod, soluble in water.Emulsification, washing, wettability are good.
Purposes: as the emulsifying agent of fiber sprinning finish, preparation family expenses, industrial detergent and metal cleaner.
Manufacturer: Xingtai area auxiliary reagent factory, auxiliary reagent factory, Shenyang, the machine chemical plant in Dalian second, Dalian Allied Chemical Corporation.
9, sodium selenide; Chemical formula: Na
2S
e, molecular weight: 124.94.Colorless solid.Easy deliquescence.Density: 2.625 (10 ℃).Fusing point is greater than 875 ℃.Be insoluble to liquefied ammonia, soluble in water, the hydrolysis and make solution be alkalescence.Behind the dissolving amorphous selenium, can form many sodium selenides (such as Na in its solution of base
2Se
2, Na
2Se
3, Na
2Se
4Deng).
10, methyl alcohol (industrial goods);
11, water.
Each weight percentages of components of tertiary oil recovery later stage oil well cleaning antiscale is:
1, hydroxyl five methylenephosphonic acids (industrial goods): 15.2~17.8%;
2, hydrochloric acid HCl (industrial goods): 3.5~4.0%;
3, hydrofluoric acid HF (industrial goods): 3.0~3.2%;
4, vitamins C (industrial goods): 0.05~0.06%;
5, phosphino-polymaleic anhydride scale inhibitor: 21.5~24%;
6, urotropine (industrial goods): 2.5~3.0%;
7, the USP2 alkyl is pentadecyl (industrial goods): 5.7~6.2%;
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods): 2.5~3.0%
9, concentration is 0.3~0.5% the sodium selenide aqueous solution: 0.001~0.0015%;
10, methyl alcohol (industrial goods): 15~20%;
11, all the other are water; Each weight percentages of components sum is 100%.
Two, the preparation method of tertiary oil recovery later stage oil well cleaning antiscale
Major equipment:
Enamel reaction still with 2000L of stirring, heating, cooling and vacuum system.
Production method:
At first, with hydroxyl five methylenephosphonic acids, phosphino-polymaleic anhydride scale inhibitor, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether adds in the enamel reaction still in proportion; Secondly, adding need to add 5% of entry, slowly is warmed up to 45~50 ℃, stirs 30 minutes; Adding in proportion successively the USP2 alkyl again is pentadecyl, urotropine, hydrochloric acid, hydrofluoric acid, stirs while adding, and then, adds in proportion concentration and be 0.3~0.5% the sodium selenide aqueous solution, vitamins C, methyl alcohol, stirs after 30 minutes; At last; The water of adding remainder also stirred 30 minutes, and stopped heating stirs while cooling off, and is cooled to normal temperature, obtains tertiary oil recovery later stage oil well cleaning antiscale.Contained water is not counted in the sodium selenide aqueous solution needs to add in the water yield.
The invention has the beneficial effects as follows: tertiary oil recovery later stage oil well cleaning antiscale, when the oil well routine maintenance, add in the tertiary oil recovery later stage oil well, can remove or slow down the oil well dirt deposition, prolong pump detection period.Add oil well annular space 50~75mg with one liter of Produced Liquid of every extraction, 1~2 times of energy Extended Pump Detection Period.
Embodiment
Embodiment 1: each weight percentages of components of tertiary oil recovery later stage oil well cleaning antiscale is:
1, hydroxyl five methylenephosphonic acids (industrial goods): 15.3%;
2, hydrochloric acid HCl (industrial goods): 3.5%;
3, hydrofluoric acid HF (industrial goods): 3.2%;
4, vitamins C (industrial goods): 0.05%;
5, phosphino-polymaleic anhydride scale inhibitor: 24%;
6, urotropine (industrial goods): 2.5%;
7, the USP2 alkyl is pentadecyl (industrial goods): 5.7%;
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods): 2.5%
9, concentration is 0.5% the sodium selenide aqueous solution: 0.001%;
10, methyl alcohol (industrial goods): 15%;
11, water: 28.249%.
Production method: at first, with hydroxyl five methylenephosphonic acids, phosphino-polymaleic anhydride scale inhibitor, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether adds in the enamel reaction still in proportion; Secondly, adding need to add 5% of entry, slowly is warmed up to 45~50 ℃, stirs 30 minutes; Adding in proportion successively the USP2 alkyl again is pentadecyl, urotropine, hydrochloric acid, hydrofluoric acid, stirs while adding, and then, adds in proportion sodium selenide, vitamins C, methyl alcohol, stirs after 30 minutes; At last; The water of adding remainder also stirred 30 minutes, and stopped heating stirs while cooling off, and is cooled to normal temperature, obtains tertiary oil recovery later stage oil well cleaning antiscale.
Effect: add oil well annular space 65mg with one liter of Produced Liquid of every extraction, 1.2 times of energy Extended Pump Detection Periods.
Embodiment: 2: each weight percentages of components of tertiary oil recovery later stage oil well cleaning antiscale is:
1, hydroxyl five methylenephosphonic acids (industrial goods): 15.8%;
2, hydrochloric acid HCl (industrial goods): 3.6%;
3, hydrofluoric acid HF (industrial goods): 3.15%;
4, vitamins C (industrial goods): 0.052%;
5, phosphino-polymaleic anhydride scale inhibitor: 23.5%;
6, urotropine (industrial goods): 2.6%;
7, the USP2 alkyl is pentadecyl (industrial goods): 5.9%;
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods): 2.6%
9, concentration is 0.5% the sodium selenide aqueous solution: 0.0012%;
10, methyl alcohol (industrial goods): 16%;
11, water: 26.7968%.
The preparation method is identical with embodiment 1.Effect: add oil well annular space 60mg with one liter of Produced Liquid of every extraction, 1.2 times of energy Extended Pump Detection Periods.
Embodiment 3: each weight percentages of components of tertiary oil recovery later stage oil well cleaning antiscale is:
1, hydroxyl five methylenephosphonic acids (industrial goods): 16.3%;
2, hydrochloric acid HCl (industrial goods): 3.7%;
3, hydrofluoric acid HF (industrial goods): 3.12%;
4, vitamins C (industrial goods): 0.055%;
5, phosphino-polymaleic anhydride scale inhibitor: 22.7%;
6, urotropine (industrial goods): 2.7%;
7, the USP2 alkyl is pentadecyl (industrial goods): 6%;
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods): 2.7%
9, concentration is 0.4% the sodium selenide aqueous solution: 0.0013%;
10, methyl alcohol (industrial goods): 17%;
11, water is 26.7237%.
The preparation method is identical with embodiment 1.Effect: add oil well annular space 75mg with one liter of Produced Liquid of every extraction, 1.8 times of energy Extended Pump Detection Periods.
Embodiment 4: each weight percentages of components of tertiary oil recovery later stage oil well cleaning antiscale is:
1, hydroxyl five methylenephosphonic acids (industrial goods): 17%;
2, hydrochloric acid HCl (industrial goods): 3.9%;
3, hydrofluoric acid HF (industrial goods): 3.1%;
4, vitamins C (industrial goods): 0.058%;
5, phosphino-polymaleic anhydride scale inhibitor: 22%;
6, urotropine (industrial goods): 2.8%;
7, the USP2 alkyl is pentadecyl (industrial goods): 6.1%;
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods): 2.8%
9, concentration is 0.5% the sodium selenide aqueous solution: 0.0014%;
10, methyl alcohol (industrial goods): 18%;
11, water is 24.2406%.
The preparation method is identical with embodiment 1.Effect: add oil well annular space 55mg with one liter of Produced Liquid of every extraction, 1.5 times of energy Extended Pump Detection Periods.
Embodiment 5: each weight percentages of components of tertiary oil recovery later stage oil well cleaning antiscale is:
1, hydroxyl five methylenephosphonic acids (industrial goods): 17.8%;
2, hydrochloric acid HCl (industrial goods): 4%;
3, hydrofluoric acid HF (industrial goods): 3%;
4, vitamins C (industrial goods): 0.06%;
5, phosphino-polymaleic anhydride scale inhibitor: 21.5%;
6, urotropine (industrial goods): 3%;
7, the USP2 alkyl is pentadecyl (industrial goods): 6.2%;
8, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether (industrial goods): 3%
9, concentration is 0.5% the sodium selenide aqueous solution: 0.0015%;
10, methyl alcohol (industrial goods): 20%;
11, water is 21.4385%.
The preparation method is identical with embodiment 1.Effect: add oil well annular space 75mg with one liter of Produced Liquid of every extraction, 1.7 times of energy Extended Pump Detection Periods.
Claims (2)
1. tertiary oil recovery later stage oil well cleaning antiscale is characterized in that each weight percentages of components is:
Hydroxyl five methylenephosphonic acids: 15.2~17.8%;
Hydrochloric acid (HCl): 3.5~4.0%;
Hydrofluoric acid (HF): 3.0~3.2%;
Vitamins C: 0.05~0.06%;
Phosphino-polymaleic anhydride scale inhibitor: 21.5~24%;
Urotropine: 2.5~3.0%;
The USP3 alkyl is pentadecyl: 5.7~6.2%;
C
12-C
18Aliphatic alcohol polyethenoxy (10) ether: 2.5~3.0%;
Concentration is 0.3~0.5% the sodium selenide aqueous solution: 0.001~0.0015%;
Methyl alcohol: 15~20%;
All the other are water; Each weight percentages of components sum is 100%.
2. tertiary oil recovery later stage oil well cleaning antiscale as claimed in claim 1 is characterized in that production method is:
At first, with hydroxyl five methylenephosphonic acids, phosphino-polymaleic anhydride scale inhibitor, C
12-C
18Aliphatic alcohol polyethenoxy (10) ether adds in the enamel reaction still in proportion; Secondly, adding need to add 5% of entry, slowly is warmed up to 45~50 ℃, stirs 30 minutes; Adding in proportion successively the USP3 alkyl again is pentadecyl, urotropine, hydrochloric acid, hydrofluoric acid, stirs while adding, and then, adds in proportion concentration and be 0.3~0.5% the sodium selenide aqueous solution, vitamins C, methyl alcohol, stirs after 30 minutes; At last; The water of adding remainder also stirred 30 minutes, and stopped heating stirs while cooling off, and is cooled to normal temperature, obtains tertiary oil recovery later stage oil well cleaning antiscale.
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CN108913112A (en) * | 2018-08-10 | 2018-11-30 | 宁夏朔光石油科技有限公司 | Cleaning antiscale and preparation method thereof |
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CN104962266A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Oil well cleaning scale inhibitor |
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CN100460564C (en) * | 2005-10-31 | 2009-02-11 | 中国石油化工股份有限公司 | Method for restraining corrosion by circulating cooling water of containing sulphur |
CN101798502B (en) * | 2010-04-09 | 2012-12-12 | 中国石油天然气股份有限公司 | Scale inhibitor for preventing deposition of barium and strontium scales |
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