CN111205840A - Blocking remover based on deep eutectic solvent and preparation method thereof - Google Patents
Blocking remover based on deep eutectic solvent and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a blocking remover based on a deep eutectic solvent and a preparation method thereof, belonging to the technical field of preparation of novel green blocking removers. The blocking remover based on the deep eutectic solvent comprises a deep eutectic solvent based blocking remover and a blocking removing functional auxiliary agent, wherein the deep eutectic solvent based blocking remover comprises a hydrogen bond acceptor and a hydrogen bond donor, wherein the ratio of the total moles of the hydrogen bond acceptor to the total moles of the hydrogen bond donor is 1: 0.2-10, wherein the hydrogen bond receptor consists of ammonium chloride and choline chloride in a molar ratio of 1: 1; the hydrogen bond donor consists of the following components in parts by mole: 11-13 parts of polyaspartic acid, 5-7 parts of ethylene diamine tetra methylene phosphonic acid, 5-7 parts of amino trimethylene phosphonic acid, 2-4 parts of diglycolamine, 2-3 parts of tris (hydroxymethyl) methylglycine, 2-4 parts of glycerol, 2-3 parts of trehalose and 1-2 parts of caffeic acid. The deep co-melting solvent-based blocking remover provided by the invention has good affinity with metal ions, and can disperse the metal ions by utilizing the solvent effect and increase the corrosion rate.
Description
Technical Field
The invention relates to a blocking remover based on a deep eutectic solvent and a preparation method thereof, belonging to the technical field of preparation of novel green blocking removers.
Background
The mineralization of the formation water of the oil field is high, and a large amount of metal ions and corrosive substances (such as CO) exist2，H2S, dissolved oxygen, bacteria and the like) to cause scaling of equipment and pipelines in the oil and gas production process, thereby seriously threatening the safety of oil fields. Meanwhile, under the conditions of high pressure and low temperature, hydrates are easy to form and grow in oil and gas pipelines, so that the pipelines are blocked and broken, and even serious production safety accidents are caused. Therefore, the oil and gas pipeline blockage removal is a key technology for preventing oil field accidents.
The traditional common blockage removal technology for oil fields mainly comprises acidification and chelation descaling technology. Acidification and descaling can cause certain corrosion to equipment, the effect of removing strontium barium sulfate scale is poor, and multiple acidification can excessively erode the stratum, thereby causing sand production of an oil well. The chelating descaling technology does not corrode equipment, but the traditional chelating agent has high cost and limited types of applicable scale samples, so that the application of the chelating descaling technology is limited. The novel compound chelating descaling agent is expected to enhance the corrosion effect of the novel compound chelating descaling agent on various scale samples.
The deep eutectic solvent is a eutectic substance formed by combining two or three cheap and green components through hydrogen bonds, and is usually in a liquid state at 25-70 ℃. The ionic liquid has the advantages of ionic liquid, such as good chemical stability, no toxicity, nonflammability, low viscosity, low freezing point, recyclability and the like, and has simple synthesis process, environmental friendliness and higher atom economy. The deep eutectic solvent has good designability, can select components according to requirements, and is used as a novel green environment-friendly solvent to replace the traditional solvent to be applied to industrial production.
Disclosure of Invention
In order to solve the problems existing in the prior art, the invention aims to provide a novel blocking remover and a preparation method thereof, the preparation method of the blocking remover is simple in process, and the blocking remover is based on a deep co-melting solvent and compounded with other blocking removing components, and the novel blocking remover provided by the invention has the advantages of environmental protection, better solvation effect, enhanced dissolution effect and the like. The deep co-melting solvent has good affinity to metal ions, and other components are compounded on the basis of the deep co-melting solvent, so that the effects of acidification and chelation blockage removal can be achieved, the solvent effect of the deep co-melting solvent can be exerted, the scale sample corrosion is promoted, and the blockage removal efficiency is improved.
The technical scheme adopted by the invention is as follows:
a novel blocking remover based on a deep eutectic solvent, wherein the blocking remover consists of a deep eutectic solvent based blocking remover and a blocking removal functional auxiliary agent, wherein the deep eutectic solvent based blocking remover comprises a Hydrogen Bond Acceptor (HBA) and a Hydrogen Bond Donor (HBD) according to the ratio of the total moles of the hydrogen bond acceptor to the total moles of the hydrogen bond donor of 1: 0.2-10, wherein,
the hydrogen bond receptor consists of ammonium chloride and choline chloride in a molar ratio of 1: 1;
further, the blockage removing functional auxiliary agent comprises the following components in parts by mole: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid sodium, 6-8 parts of tetrapropenylsodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium, 2-3 parts of lysozyme and 2-3 parts of azodiisobutyronitrile.
Furthermore, the blockage removing functional auxiliary agent consists of the following components in parts by mole: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid sodium, 6-8 parts of tetrapropenylsodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium, 2-3 parts of lysozyme, 2-3 parts of azodiisobutyronitrile, 6-9 parts of dodecylamine, 4-6 parts of rhamnolipid and 4-7 parts of maleic anhydride.
Furthermore, the proportion of the deep eutectic solvent-based blocking remover to the blocking removal functional auxiliary agent is as follows: the ratio of the total mole number of hydrogen bond acceptors to the total mole number of the deblocking functional auxiliary agent in the deep co-fusion solvent-based deblocking agent is 1: 0.1 to 5.
The deep eutectic solvent-based blocking remover is prepared by the following method: and (2) enabling the hydrogen bond acceptor and the hydrogen bond donor to be in a ratio of 1: 0.2-10, heating in an oil bath at 50-60 ℃, continuing heating and stirring for 3-5 h at 50-60 ℃ after the mixture forms transparent uniform liquid, and vacuum drying for 24-48 h at 60-80 ℃ in a vacuum drying oven to obtain the deep co-melting solvent-based blocking remover.
Another object of the present invention is to provide a process for preparing the above-mentioned novel deblocking agent based on deep eutectic solvents.
A preparation method of a novel blocking remover based on a deep eutectic solvent comprises the preparation steps of the blocking remover based on the deep eutectic solvent, and specifically comprises the following steps: and (2) enabling the hydrogen bond acceptor and the hydrogen bond donor to be in a ratio of 1: 0.2-10, heating in an oil bath at 50-60 ℃, continuing heating and stirring for 3-5 h at 50-60 ℃ after the mixture forms transparent uniform liquid, and vacuum drying for 24-48 h at 60-80 ℃ in a vacuum drying oven to obtain the deep co-melting solvent-based blocking remover.
One preferred scheme is: the method comprises the step of mixing the deep eutectic solvent-based blocking remover with the blocking removal functional auxiliary agent, and specifically comprises the following steps: mixing the raw materials of the deblocking functional additive according to the following molar parts to obtain the deblocking functional additive: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid, 6-8 parts of tetrapropenyl sodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium salt, 2-3 parts of lysozyme and 2-3 parts of azodiisobutyronitrile;
according to the ratio of the total mole number of hydrogen bond acceptors in the deep co-melting solvent-based blocking remover to the total mole number of the blocking removing functional auxiliary agent, the deep co-melting solvent-based blocking remover and the blocking removing functional auxiliary agent are 1: 0.1-5, and mixing to obtain the novel blocking remover.
Another preferred embodiment is: the method comprises the step of mixing the deep eutectic solvent-based blocking remover with the blocking removal functional auxiliary agent, and specifically comprises the following steps: mixing the raw materials of the deblocking functional additive according to the following molar parts to obtain the deblocking functional additive: the blockage removal functional auxiliary agent comprises the following components in parts by mole: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid, 6-8 parts of tetrapropenyl sodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium, 2-3 parts of lysozyme, 2-3 parts of azodiisobutyronitrile, 6-9 parts of dodecylamine, 4-6 parts of rhamnolipid and 4-7 parts of maleic anhydride;
the method comprises the following steps of (1) mixing a deep co-melting solvent-based blocking remover and a blocking removal functional auxiliary agent according to the ratio of the total molar number of hydrogen bond receptors in the deep co-melting solvent-based blocking remover to the total molar number of the blocking removal functional auxiliary agent: 0.1-5, and mixing to obtain the novel blocking remover.
The invention has the beneficial effects that: the deep co-melting solvent-based blocking remover provided by the invention has good affinity with metal ions, and can disperse the metal ions by utilizing the solvent effect and increase the corrosion rate; the deep co-melting solvent-based blocking remover is compounded with other components to play a synergistic role, enhance the corrosion effect and improve the blocking removal efficiency; the blocking remover provided by the invention has small corrosivity, and is beneficial to reducing and prolonging the service life of a pipeline; the deep co-melting solvent-based blocking remover is simple in process synthesis, can reduce the production cost and is easy to realize large-scale production.
Drawings
FIG. 1 is a graph showing the erosion rates of various scale samples by the novel blocking remover based on deep eutectic solvent prepared in example 1 of the present invention.
Detailed Description
The following non-limiting examples are presented to enable those of ordinary skill in the art to more fully understand the present invention and are not intended to limit the invention in any way.
The test methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.
One of the specific implementation modes is as follows:
a preparation method of a novel blocking remover based on a deep eutectic solvent comprises the following process steps:
(1) design and synthesis of deep co-melting solvent-based blocking remover
Weighing ammonium chloride and choline chloride (ammonium chloride: choline chloride ═ 1:1, molar ratio) as hydrogen bond receptors (HBA); 11-13 parts of polyaspartic acid, 5-7 parts of ethylene diamine tetra methylene phosphonic acid, 5-7 parts of amino trimethylene phosphonic acid, 2-4 parts of diglycolamine, 2-3 parts of tris (hydroxymethyl) methylglycine, 2-4 parts of glycerol, 2-3 parts of trehalose and 1-2 parts of caffeic acid are mixed according to a molar ratio to form a Hydrogen Bond Donor (HBD); mixing a hydrogen bond acceptor and a hydrogen bond donor in a round bottom flask according to a certain proportion (the total mole number of HBA: the total mole number of HBD is 1: 0.2-10), heating in an oil bath at 50-60 ℃, continuing to heat and stir for 3-5 h after the mixture forms transparent uniform liquid, and obtaining the deep co-melting solvent-based blocking remover; and (3) drying the synthesized deep eutectic solvent-based blocking remover in a vacuum drying oven at 60-80 ℃ for 24-48 h for later use.
(2) Deep co-melting solvent-based blocking remover and auxiliary agent compounding
Mixing 9-11 parts of urotropine, 9-11 parts of sodium D-gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of sodium polyepoxysuccinate, 6-8 parts of sodium tetrapropenylbenzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of tetrasodium ethylenediaminetetraacetate, 2-3 parts of lysozyme and 2-3 parts of azodiisobutyronitrile according to molar parts to form an auxiliary agent; the deep co-melting solvent-based blocking remover and the auxiliary agent are mixed according to the total mole number of HBA: the total mole number of the auxiliary agent is 1: 0.1-5, and mixing and compounding to prepare the novel blocking remover.
Furthermore, the auxiliary raw materials also comprise 6-9 parts of dodecylamine, 4-6 parts of rhamnolipid and 4-7 parts of maleic anhydride.
Example 1
A preparation method of a novel blocking remover based on a deep eutectic solvent comprises the following process steps:
(1) design and synthesis of deep co-melting solvent-based blocking remover
Weighing ammonium chloride and choline chloride (ammonium chloride: choline chloride ═ 1:1, molar ratio) as hydrogen bond receptors (HBA); polyaspartic acid (11 parts), ethylene diamine tetra (methylene phosphonic acid) (5 parts), amino trimethylene phosphonic acid (5 parts), diglycolamine (2 parts), tris (hydroxymethyl) methylglycine (2 parts), glycerol (2 parts), trehalose (2 parts) and caffeic acid (1 part) are mixed according to a molar ratio to form a Hydrogen Bond Donor (HBD); and (3) mixing a hydrogen bond acceptor and a hydrogen bond donor in a round bottom flask according to a certain proportion (the total mole number of HBA: the total mole number of HBD is 1: 0.2), heating in an oil bath at 50 ℃, and continuing heating and stirring for 4 hours after the mixture forms transparent uniform liquid to obtain the deep co-melting solvent-based blocking remover. And (3) drying the synthesized deep eutectic solvent-based blocking remover in a vacuum drying oven for 24 hours at the temperature of 60 ℃ in vacuum for later use.
(2) Deep co-melting solvent-based blocking remover and auxiliary agent compounding
Mixing urotropine (9 parts), D-sodium gluconate (9 parts), sodium fatty acid (7 parts), polyepoxysuccinic acid (9 parts), sodium tetrapropenylbenzenesulfonate (6 parts), sodium octadecenoate (5 parts), trisodium N, N-dicarboxymethylalanine (4 parts), tetrasodium ethylenediaminetetraacetate (7 parts), lysozyme (2 parts) and azobisisobutyronitrile (2 parts) according to molar parts to form an auxiliary agent; the deep co-melting solvent-based blocking remover and the auxiliary agent are mixed according to the total mole number of HBA: the total mole number of the auxiliary agent is 1: 0.1, mixing and compounding to prepare the novel blocking remover.
(3) Testing of corrosion effect of blocking remover on scale sample
Simulating and preparing an oilfield pipeline scale sample: taking MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4And respectively placing the scale sample powder in beakers, drying the beakers in an oven at 105 ℃ to constant weight, and placing the beakers in a dryer for cooling for later use. Weighing MgCO respectively3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4Adding 1g of scale sample powder into conical flask, adding 20mL of novel blocking remover, slightly shaking, mixing, heating in 50 deg.C water bath, stirring at 500r/min for 6 hr to obtain transparent mixed solution with good corrosion rate, and calculating to obtain MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4The corrosion rates of (A) were 83.1%, 54.8%, 75.2%, 73.2%, 56.8% and 58.0%, respectively.
Example 2
A preparation method of a novel blocking remover based on a deep eutectic solvent comprises the following process steps:
(1) design and synthesis of deep co-melting solvent-based blocking remover
Weighing ammonium chloride and choline chloride (ammonium chloride: choline chloride ═ 1:1, molar ratio) as hydrogen bond receptors (HBA); polyaspartic acid (13 parts), ethylene diamine tetra (methylene phosphonic acid) (7 parts), amino trimethylene phosphonic acid (7 parts), diglycolamine (4 parts), tris (hydroxymethyl) methylglycine (3 parts), glycerol (4 parts), trehalose (3 parts) and caffeic acid (2 parts) are mixed according to a molar ratio to form a Hydrogen Bond Donor (HBD); and (3) mixing a hydrogen bond acceptor and a hydrogen bond donor in a round bottom flask according to a certain proportion (the total mole number of HBA: the total mole number of HBD: 1), heating in an oil bath at 50 ℃, and continuing heating and stirring for 4 hours after the mixture forms transparent uniform liquid to obtain the deep co-melting solvent-based blocking remover. And (3) drying the synthesized deep eutectic solvent-based blocking remover in a vacuum drying oven for 24 hours at the temperature of 60 ℃ in vacuum for later use.
(2) Deep co-melting solvent-based blocking remover and auxiliary agent compounding
Mixing urotropine (11 parts), D-sodium gluconate (11 parts), sodium fatty acid (9 parts), polyepoxysuccinic acid (11 parts), tetrapropenylsodium benzenesulfonate (8 parts), sodium octadecenoate (7 parts), N-dicarboxymethylalanine trisodium (7 parts), ethylenediaminetetraacetic acid tetrasodium (9 parts), lysozyme (3 parts) and azobisisobutyronitrile (3 parts) according to molar parts to form an auxiliary agent; the deep co-melting solvent-based blocking remover and the auxiliary agent are mixed according to the total mole number of HBA: the total mole number of the auxiliary agent is 1:1, mixing and compounding to prepare the novel blocking remover.
(3) Testing of corrosion effect of blocking remover on scale sample
Simulating and preparing an oilfield pipeline scale sample: taking MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4And respectively placing the scale sample powder in beakers, drying the beakers in an oven at 105 ℃ to constant weight, and placing the beakers in a dryer for cooling for later use. Weighing MgCO respectively3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4Adding 1g of scale sample powder into conical flask, adding 20mL of novel blocking remover, slightly shaking, mixing, heating in 50 deg.C water bath, stirring at 500r/min for 6 hr to obtain transparent mixed solution, adding adjuvant which is not involved in other examples, increasing corrosion rate, and removing impuritiesCalculation of MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4The corrosion rates of (a) were 85.9%, 56.0%, 78.9%, 75.2%, 59.7% and 61.3%, respectively.
Example 3
A preparation method of a novel blocking remover based on a deep eutectic solvent comprises the following process steps:
(1) design and synthesis of deep co-melting solvent-based blocking remover
Weighing ammonium chloride and choline chloride (ammonium chloride: choline chloride ═ 1:1, molar ratio) as hydrogen bond receptors (HBA); polyaspartic acid (11 parts), ethylene diamine tetra (methylene phosphonic acid) (5 parts), amino trimethylene phosphonic acid (5 parts), diglycolamine (2 parts), tris (hydroxymethyl) methylglycine (2 parts), glycerol (2 parts), trehalose (2 parts) and caffeic acid (1 part) are mixed according to a molar ratio to form a Hydrogen Bond Donor (HBD); and (3) mixing a hydrogen bond acceptor and a hydrogen bond donor in a round bottom flask according to a certain proportion (the total mole number of HBA: the total mole number of HBD is 1: 0.2), heating in an oil bath at 50 ℃, and continuing heating and stirring for 4 hours after the mixture forms transparent uniform liquid to obtain the deep co-melting solvent-based blocking remover. And (3) drying the synthesized deep eutectic solvent-based blocking remover in a vacuum drying oven for 24 hours at the temperature of 60 ℃ in vacuum for later use.
(2) Deep co-melting solvent-based blocking remover and auxiliary agent compounding
Mixing 9 parts of urotropine, 9 parts of sodium D-gluconate, 7 parts of sodium fatty acid, 9 parts of polyepoxysuccinic acid, 6 parts of tetrapropenylsodium benzenesulfonate, 5 parts of sodium octadecenoate, 4 parts of trisodium N, N-dicarboxymethylalanine, 7 parts of tetrasodium ethylene diamine tetraacetate, 2 parts of lysozyme, 2 parts of azodiisobutyronitrile, 6 parts of dodecylamine, 4 parts of rhamnolipid and 4 parts of maleic anhydride according to molar parts to form an auxiliary agent; the deep co-melting solvent-based blocking remover and the auxiliary agent are mixed according to the total mole number of HBA: the total mole number of the auxiliary agent is 1: 0.1, mixing and compounding to prepare the novel blocking remover.
(3) Testing of corrosion effect of blocking remover on scale sample
Simulating and preparing an oilfield pipeline scale sample: taking MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4And respectively placing the scale sample powder in beakers, drying the beakers in an oven at 105 ℃ to constant weight, and placing the beakers in a dryer for cooling for later use. Weighing MgCO respectively3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4Adding 1g of scale sample powder into conical flask, adding 20mL of novel blocking remover, slightly shaking, mixing, heating in 50 deg.C water bath, stirring at 500r/min for 6 hr to obtain transparent mixed solution, adding new cosolvent to increase corrosion rate, and calculating to obtain MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4The corrosion rates of (a) were 84.2%, 55.0%, 76.7%, 74.0%, 57.2% and 59.9%, respectively.
Example 4
A preparation method of a novel blocking remover based on a deep eutectic solvent comprises the following process steps:
(1) design and synthesis of deep co-melting solvent-based blocking remover
Weighing ammonium chloride and choline chloride (ammonium chloride: choline chloride ═ 1:1, molar ratio) as hydrogen bond receptors (HBA); polyaspartic acid (11 parts), ethylene diamine tetra (methylene phosphonic acid) (5 parts), amino trimethylene phosphonic acid (5 parts), diglycolamine (2 parts), tris (hydroxymethyl) methylglycine (2 parts), glycerol (2 parts), trehalose (2 parts) and caffeic acid (1 part) are mixed according to a molar ratio to form a Hydrogen Bond Donor (HBD); and (3) mixing a hydrogen bond acceptor and a hydrogen bond donor in a round bottom flask according to a certain proportion (the total mole number of HBA: the total mole number of HBD is 1: 0.2), heating in an oil bath at 50 ℃, and continuing heating and stirring for 4 hours after the mixture forms transparent uniform liquid to obtain the deep co-melting solvent-based blocking remover. And (3) drying the synthesized deep eutectic solvent-based blocking remover in a vacuum drying oven for 24 hours at the temperature of 60 ℃ in vacuum for later use.
(2) Deep co-melting solvent-based blocking remover and auxiliary agent compounding
Mixing urotropine (9 parts), D-sodium gluconate (9 parts), sodium fatty acid (7 parts), polyepoxysuccinic acid (9 parts), sodium tetrapropenylbenzenesulfonate (6 parts), sodium octadecenoate (5 parts), trisodium N, N-dicarboxymethylalanine (4 parts), tetrasodium ethylenediaminetetraacetate (7 parts), lysozyme (2 parts) and azobisisobutyronitrile (2 parts) according to molar parts to form an auxiliary agent; the deep co-melting solvent-based blocking remover and the auxiliary agent are mixed according to the total mole number of HBA: the total mole number of the auxiliary agent is 1: 0.1, mixing and compounding to prepare the novel blocking remover.
(3) Testing of corrosion effect of blocking remover on scale sample
Simulating and preparing an oilfield pipeline scale sample: preparing scale sample according to a certain proportion, and taking a certain quantity of MgCO3、CaCO3And CaSO4And respectively placing the calcium-magnesium scale sample powder in beakers, drying the beakers in an oven at 105 ℃ to constant weight, and placing the beakers in a dryer for cooling for later use. Weighing MgCO respectively3、CaCO3And CaSO4Adding 1g of scale sample powder into conical flask, adding 20mL of novel blocking remover, slightly shaking, mixing, heating in 50 deg.C water bath, stirring at 500r/min for 6 hr to obtain transparent mixed solution with high corrosion rate, and calculating to obtain MgCO3、CaCO3And CaSO4The corrosion rates of (A) were 85.9%, 78.1% and 76.0%, respectively.
Example 5
A preparation method of a novel blocking remover based on a deep eutectic solvent comprises the following process steps:
(1) design and synthesis of deep co-melting solvent-based blocking remover
Weighing ammonium chloride and choline chloride (ammonium chloride: choline chloride ═ 1:1, molar ratio) as hydrogen bond receptors (HBA); polyaspartic acid (11 parts), ethylene diamine tetra (methylene phosphonic acid) (5 parts), amino trimethylene phosphonic acid (5 parts), diglycolamine (2 parts), tris (hydroxymethyl) methylglycine (2 parts), glycerol (2 parts), trehalose (2 parts) and caffeic acid (1 part) are mixed according to a molar ratio to form a Hydrogen Bond Donor (HBD); and (3) mixing a hydrogen bond acceptor and a hydrogen bond donor in a round bottom flask according to a certain proportion (the total mole number of HBA: the total mole number of HBD is 1: 0.2), heating in an oil bath at 50 ℃, and continuing heating and stirring for 4 hours after the mixture forms transparent uniform liquid to obtain the deep co-melting solvent-based blocking remover. And (3) drying the synthesized deep eutectic solvent-based blocking remover in a vacuum drying oven for 24 hours at the temperature of 60 ℃ in vacuum for later use.
(2) Deep co-melting solvent-based blocking remover and auxiliary agent compounding
Mixing urotropine (9 parts), D-sodium gluconate (9 parts), sodium fatty acid (7 parts), polyepoxysuccinic acid (9 parts), sodium tetrapropenylbenzenesulfonate (6 parts), sodium octadecenoate (5 parts), trisodium N, N-dicarboxymethylalanine (4 parts), tetrasodium ethylenediaminetetraacetate (7 parts), lysozyme (2 parts) and azobisisobutyronitrile (2 parts) according to molar parts to form an auxiliary agent; the deep co-melting solvent-based blocking remover and the auxiliary agent are mixed according to the total mole number of HBA: the total mole number of the auxiliary agent is 1: 0.1, mixing and compounding to prepare the novel blocking remover.
(3) Testing of corrosion effect of blocking remover on scale sample
Simulating and preparing an oilfield pipeline scale sample: preparing scale sample according to a certain proportion, and taking a certain amount of BaSO4And SrSO4And respectively placing the barium-strontium scale sample powder in a beaker, drying in an oven at 105 ℃ until the weight is constant, and placing in a dryer for cooling for later use. Respectively weighing BaSO4And SrSO4Adding 1g of scale sample powder into a conical flask, adding 20mL of novel blocking remover, slightly shaking and mixing, heating in 50 deg.C water bath, stirring at 500r/min for 6 hr to obtain transparent mixed solution with low corrosion rate, and calculating BaSO4And SrSO4The erosion rates of (A) were 58.1% and 56.0%, respectively.
Comparative example 1
The preparation method of the blocking remover comprises the following process steps:
(1) designed and synthesized blocking remover
The blocking remover comprises the following components in parts by mole: weighing polyaspartic acid (11 parts), ethylene diamine tetra (methylene) phosphonic acid (5 parts), amino trimethylene phosphonic acid (5 parts), diglycolamine (2 parts), tris (hydroxymethyl) methylglycine (2 parts), glycerol (2 parts), trehalose (2 parts) and caffeic acid (1 part) according to molar parts, mixing in a round-bottom flask, placing in an oil bath for heating at 50 ℃, and continuing to heat and stir for 4 hours after the mixture forms transparent uniform liquid, thus obtaining the blocking remover. And (3) drying the synthesized blocking remover in a vacuum drying oven at 60 ℃ for 24 hours for later use.
(2) The blocking remover and the assistant are compounded
Mixing urotropine (9 parts), D-sodium gluconate (9 parts), sodium fatty acid (7 parts), polyepoxysuccinic acid (9 parts), sodium tetrapropenylbenzenesulfonate (6 parts), sodium octadecenoate (5 parts), trisodium N, N-dicarboxymethylalanine (4 parts), tetrasodium ethylenediaminetetraacetate (7 parts), lysozyme (2 parts) and azobisisobutyronitrile (2 parts) according to molar parts to form an auxiliary agent; the total mole number of the deblocking agent and the auxiliary agent is as follows: the total mole number of the auxiliary agent is 2: 1, mixing and compounding to prepare the blocking remover.
(3) Testing of corrosion effect of blocking remover on scale sample
Simulating and preparing an oilfield pipeline scale sample: taking MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4And respectively placing the scale sample powder in beakers, drying the beakers in an oven at 105 ℃ to constant weight, and placing the beakers in a dryer for cooling for later use. Weighing MgCO respectively3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4Adding 1g of scale sample powder into conical flask, adding 20mL of blocking remover, slightly shaking, mixing, heating in 50 deg.C water bath, stirring at 500r/min for 6 hr to obtain transparent mixed solution, and calculating to obtain MgCO3、Fe2O3、CaCO3、CaSO4、BaSO4And SrSO4The corrosion rates of the components are respectively 63.0%, 40.2%, 59.0%, 62.9%, 42.9% and 41.8%, and the corrosion rates of the scale samples of the components are reduced compared with that of the scale sample of the embodiment 1.
Claims (8)
1. A blocking remover based on a deep eutectic solvent is characterized in that: the blocking remover consists of a deep co-melting solvent-based blocking remover and a blocking removing functional auxiliary agent, wherein the deep co-melting solvent-based blocking remover is prepared by mixing a hydrogen bond acceptor and a hydrogen bond donor according to the ratio of the total mole number of the hydrogen bond acceptor to the total mole number of the hydrogen bond donor of 1: 0.2-10, wherein,
the hydrogen bond receptor consists of ammonium chloride and choline chloride in a molar ratio of 1: 1;
the hydrogen bond donor consists of the following components in parts by mole: 11-13 parts of polyaspartic acid, 5-7 parts of ethylene diamine tetra methylene phosphonic acid, 5-7 parts of amino trimethylene phosphonic acid, 2-4 parts of diglycolamine, 2-3 parts of tris (hydroxymethyl) methylglycine, 2-4 parts of glycerol, 2-3 parts of trehalose and 1-2 parts of caffeic acid.
2. The deblocking agent according to claim 1, wherein: the blockage removing functional auxiliary comprises the following components in parts by mole: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid sodium, 6-8 parts of tetrapropenylsodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium, 2-3 parts of lysozyme and 2-3 parts of azodiisobutyronitrile.
3. The deblocking agent according to claim 1, wherein: the blockage removal functional auxiliary agent comprises the following components in parts by mole: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid sodium, 6-8 parts of tetrapropenylsodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium, 2-3 parts of lysozyme, 2-3 parts of azodiisobutyronitrile, 6-9 parts of dodecylamine, 4-6 parts of rhamnolipid and 4-7 parts of maleic anhydride.
4. The deblocking agent according to claim 1, wherein: the proportion of the deep eutectic solvent-based blocking remover to the blocking removing functional auxiliary agent is as follows: the ratio of the total mole number of hydrogen bond acceptors to the total mole number of the deblocking functional auxiliary agent in the deep co-fusion solvent-based deblocking agent is 1: 0.1 to 5.
5. The deblocking agent according to claim 1, wherein: the deep eutectic solvent-based blocking remover is prepared by the following method: and (2) enabling the hydrogen bond acceptor and the hydrogen bond donor to be in a ratio of 1: 0.2-10, heating in an oil bath at 50-60 ℃, continuing heating and stirring for 3-5 h at 50-60 ℃ after the mixture forms transparent uniform liquid, and vacuum drying for 24-48 h at 60-80 ℃ in a vacuum drying oven to obtain the deep co-melting solvent-based blocking remover.
6. The process for preparing a deep eutectic solvent based deblocking agent according to claim 1, wherein: the method comprises the preparation steps of the deep eutectic solvent-based blocking remover, and specifically comprises the following steps: and (2) enabling the hydrogen bond acceptor and the hydrogen bond donor to be in a ratio of 1: 0.2-10, heating in an oil bath at 50-60 ℃, continuing heating and stirring for 3-5 h at 50-60 ℃ after the mixture forms transparent uniform liquid, and vacuum drying for 24-48 h at 60-80 ℃ in a vacuum drying oven to obtain the deep co-melting solvent-based blocking remover.
7. The method of claim 1, wherein: the method comprises the step of mixing the deep eutectic solvent-based blocking remover with the blocking removal functional auxiliary agent, and specifically comprises the following steps: mixing the raw materials of the deblocking functional additive according to the following molar parts to obtain the deblocking functional additive: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid, 6-8 parts of tetrapropenyl sodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium salt, 2-3 parts of lysozyme and 2-3 parts of azodiisobutyronitrile;
the method comprises the following steps of (1) mixing a deep co-melting solvent-based blocking remover and a blocking removal functional auxiliary agent according to the ratio of the total molar number of hydrogen bond receptors in the deep co-melting solvent-based blocking remover to the total molar number of the blocking removal functional auxiliary agent: 0.1-5, and mixing to obtain the novel blocking remover.
8. The method of claim 1, wherein: the method comprises the step of mixing the deep eutectic solvent-based blocking remover with the blocking removal functional auxiliary agent, and specifically comprises the following steps: mixing the raw materials of the deblocking functional additive according to the following molar parts to obtain the deblocking functional additive: the blockage removal functional auxiliary agent comprises the following components in parts by mole: 9-11 parts of urotropine, 9-11 parts of D-sodium gluconate, 7-9 parts of sodium fatty acid, 9-11 parts of polyepoxysuccinic acid, 6-8 parts of tetrapropenyl sodium benzenesulfonate, 5-7 parts of sodium octadecenoate, 4-7 parts of N, N-dicarboxymethylalanine trisodium, 7-9 parts of ethylene diamine tetraacetic acid tetrasodium, 2-3 parts of lysozyme, 2-3 parts of azodiisobutyronitrile, 6-9 parts of dodecylamine, 4-6 parts of rhamnolipid and 4-7 parts of maleic anhydride;
the method comprises the following steps of (1) mixing a deep co-melting solvent-based blocking remover and a blocking removal functional auxiliary agent according to the ratio of the total molar number of hydrogen bond receptors in the deep co-melting solvent-based blocking remover to the total molar number of the blocking removal functional auxiliary agent: 0.1-5, and mixing to obtain the novel blocking remover.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234427A (en) * | 2021-05-13 | 2021-08-10 | 东莞理工学院 | Oil field acidification plug removal system based on deep co-fusion solvent |
| CN115074101A (en) * | 2022-06-30 | 2022-09-20 | 常州大学 | Preparation method and application of surfactant with reservoir protection effect for oil displacement of low-permeability sandstone reservoir |
| CN115746814A (en) * | 2022-11-16 | 2023-03-07 | 河南海纳石油工程技术有限公司 | Efficient environment-friendly blocking remover |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194759A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN106833584A (en) * | 2017-03-23 | 2017-06-13 | 兰州熙瑞化工科技有限公司 | Oil field barium strontium dirt descaling and blockage relieving agent composition and preparation method thereof |
| CN107417553A (en) * | 2017-05-23 | 2017-12-01 | 广州纽楷美新材料科技有限公司 | polymerizable eutectic solvent |
| CN110129018A (en) * | 2019-05-07 | 2019-08-16 | 中国海洋石油集团有限公司 | A kind of non-acid deblocking agent and preparation method thereof for heavy oil wells |
-
2020
- 2020-02-28 CN CN202010129391.2A patent/CN111205840B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194759A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oil recovery formation in oilfield and preparation method thereof |
| CN106833584A (en) * | 2017-03-23 | 2017-06-13 | 兰州熙瑞化工科技有限公司 | Oil field barium strontium dirt descaling and blockage relieving agent composition and preparation method thereof |
| CN107417553A (en) * | 2017-05-23 | 2017-12-01 | 广州纽楷美新材料科技有限公司 | polymerizable eutectic solvent |
| CN110129018A (en) * | 2019-05-07 | 2019-08-16 | 中国海洋石油集团有限公司 | A kind of non-acid deblocking agent and preparation method thereof for heavy oil wells |
Non-Patent Citations (1)
| Title |
|---|
| 侯玉翠等: "低共熔溶剂在混合物分离中的应用", 《科学通报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234427A (en) * | 2021-05-13 | 2021-08-10 | 东莞理工学院 | Oil field acidification plug removal system based on deep co-fusion solvent |
| CN115074101A (en) * | 2022-06-30 | 2022-09-20 | 常州大学 | Preparation method and application of surfactant with reservoir protection effect for oil displacement of low-permeability sandstone reservoir |
| CN115074101B (en) * | 2022-06-30 | 2023-08-08 | 常州大学 | Preparation method and application of surfactant with reservoir protection effect for low-permeability sandstone reservoir oil displacement |
| CN115746814A (en) * | 2022-11-16 | 2023-03-07 | 河南海纳石油工程技术有限公司 | Efficient environment-friendly blocking remover |
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