Inhibiting additive complex action

 

(57) Abstract:

The invention relates to the oil industry and can be used to prevent the formation of asphalt-maloperation deposits (ARPD) and metal corrosion in oilfield equipment. Inhibiting additive comprehensive action-based surfactant contains, wt%: 1-2 neonols, 6-8 sulfonate sodium, 2-3 triethanolamine, 0,8-1,3 sodium hydroxide, 1.0 to 1.5 water, 11-12 tall oil and the phenolic extract cleanup the rest. The additive can improve the rheological properties of paraffin oil, to reduce the formation of deposits and corrosion of metal on the walls of oilfield equipment. 6 table.

The invention relates to the oil industry and can be used to prevent the formation of asphalt-maloperation deposits (ARPD) and metal corrosion in oilfield equipment.

Known inhibiting compositions based on esters of acrylic and methacrylic acids - NAM-1 and NAM-MA [Skovorodnikov Y. A. “improving the efficiency of the use of depressant additives to paraffin oils”// Oil industry. - 1978. No. 6. - C. 49].

Closest to the technical essence and K-9, which include synthesized surfactants, polymer and solvent [Abbasov, M. C., Ismailov T. A., Nazarov, I., Samedov, A. M., E. Abdullayev W., Maharramov R. C. paraffin Inhibitor of multifunctional action// proceedings of the 4th International conference “Chemistry of oil and gas. - T. 1. - S. 529-531].

However, they are not effective for oils with a mass content of paraffin hydrocarbons of more than 10% and for pumping oil and petroleum products at temperatures below 20°C.

The objective of the invention is the creation inhibiting additives comprehensive steps to prevent the formation of deposits and corrosion on the walls of oilfield equipment.

The technical result is achieved by inhibiting additive complex action contains extract phenolic cleaning, triethanolamine, sodium sodium, water, neonol, sulfonate sodium and tall oil with the following ratios, wt.%:

Triethanolamine 2-3

Caustic sodium 0,8-1,3

Water 1,0-1,5

Neonol 1-2

Sulfonate sodium 6-8

Tall oil 11-2

The phenolic extract purification Else

An additive is prepared as follows: first smachivaemogo number of phenolic extract treatment (GEFOis calculated by the formula:

GEFO= Gso m·(K. Hso m-70)/70,

where Gso m- weight of tall oil, t;

K. Hso macid number of the tall oil, mg KOH/g

After stirring served the calculated amount of triethanolamine and the mixture was stirred at 50°C for 10 hours. The number of triethanolamine (Cthe tea) required for the saponification of tall oil, is calculated as follows:

Gthe tea= (K. H(so m+EFO)·G(so m+EFO)·0,6)/Sh Hthe tea,

where K. H.(so m+EFO)acid number of the tall oil after treatment with extract phenolic cleaning, mg KOH/g;

G(so m+EFO)- weight of tall oil with phenolic extract cleanup, g;

S Hthe tea- base the number of triethanolamine, mg HCl/g

Then in the amalgamator aqueous solution of caustic soda, the amount of which (Gc) is determined by the formula:

Gwith= (K. H(so m+EFO)·G(so m+EFO)·0,75·100)/1000·C

where C - concentration aqueous solution of caustic soda, %.

After saponification with caustic soda, the mixture is aged for about 10 hours at a temperature of +50°C and then dobavliay cleanup.

Quantitative assessment of sediment formation processes conducted at the facility, developed on the basis of a known method of “cold core”. Under the following test conditions: temperature of sample oil - 30°C, the temperature of a metal rod is 12°C and the duration of a single experience - 60 minutes. Inhibitory ability of additives to prevent the formation of oil sludge on “cold core” calculated by the formula:

Sand= (W0-W1)·100/W0,

where Sandthe degree of inhibition, wt.%;

W0output sediment source of oil, g;

W1output sludge oil with additive, g

The kinematic viscosity is determined according to GOST 20287-74. Research anti-corrosion ability additives performed according to GOST 9.908-85, 9.040-74 using metal plates of steel grade St-3 with surface area S=0,000939 m2. Testing is carried out at temperatures of 20 and 40°C for 4 hours on oil and oil-water mixture. As the oil-water mixture, a mixture of oil and Cenomanian water (SW) in the ratio 3:1. The composition of the Cenomanian water, g/l:

NaCl - 13,7.

SAS2·H2O - 1,72.

MgCl2·6N2On - Euroasia properties additives “Progress” of the composition, wt.%:

Triethanolamine 2

Caustic sodium 0,8

Water 1.0

Neonol 1

Sulfonate sodium 6

Tall oil 11

The phenolic extract purification Else

The use of inhibitory additives “Progress” for oil South Taganskogo field prevents the process of precipitation on 85-82% when the concentration of the additives in the oil of 0.03 to 0.05 wt.%. The use of additives “Progress” leads to a decrease of kinematic viscosity of oil by 25.5% (table. 1.1.).

The application of complex additives "Progress" for oil South Taganskogo field at 40°C reduces the corrosion rate of 1.3-1.6 times (table. 1.2.). For oil with an additive at 20°C the corrosion rate in this experience is close to zero. When added to oil-water mixture additives in concentrations of 0.03 to 0.05 wt.% protective effect against corrosion is 99%.

Example 2. The inhibitory effect of additives “Progress” composition, wt.%:

Triethanolamine 2,5

Caustic sodium 1,0

Water 1.2

Neonol 1,5

Sulfonate sodium 7

Tall oil 11,5

The phenolic extract purification Else

was studied on oil Ostankinskogo m the La oil Ostankinskogo field prevents the process of precipitation on 84-80% when the concentration of the additives in the oil of 0.03 to 0.05 wt.%. The use of additives “Progress” leads to a decrease of kinematic viscosity of oil at 30% (table. 2.1.).

The application of complex additives "Progress" for oil Ostankinskogo field at 20°C decreases the corrosion rate of 2.8-3.7 times, at 40°C - 4.6-5.9 times (table. 2.2.).

For oil-water mixtures using complex additive "Progress", the decrease of the corrosion rate of 1.5 times at 20°C and at 40°C 1.4 times. Complex additive "Progress" shows a significant effect of protection against corrosion from 60 to 93%.

Example 3. The inhibitory effect of additives “Progress” composition, wt.%:

Triethanolamine 3

Caustic sodium 1,3

Water 1,3

Neonol 1,5

Sulfonate sodium 8

Tall oil 11,8

The phenolic extract purification Else

was studied in the oil Medium of the Vasyugan field. The test conditions as in example 1. The results are shown in table 3.1.-3.2. The application of complex additives “Progress” for oil Medium Vasyugan field reduces deposition on 84-81%, the kinematic viscosity is reduced by 11%.

Additive 20 and 40 ° C the corrosion rate under the action of the additive is reduced to 200 times. Protective effect against corrosion for oil Medium Vasyugan field is 93-100%.

Thus, the proposed additive complex action “Progress” can improve the rheological properties of paraffin oil, to reduce the formation of deposits and corrosion of metal on the walls of oilfield equipment and, therefore, increase megacity the period of operation of oilfield equipment.

Inhibiting additive comprehensive action-based surfactant, characterized in that it contains surfactants neonol and sulfonate sodium and additionally contains the phenolic extract cleanup, triethanolamine, sodium sodium, water, and tall oil in the following ratio, wt.%:

Triethanolamine 2-3

Caustic sodium 0,8-1,3

Water 1,0-1,5

Neonol 1-2

Sulfonate sodium 6-8

Tall oil 11-12

Extract phenolic cleaning the Rest

 

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Polymer composition // 2222558

The invention relates to de-icing means that resolves when applying the icing, and ensures the melting of the snow on all kinds of surfaces, including roads and building structures

FIELD: soft abrasive materials based on mixed aluminum and iron oxides.

SUBSTANCE: method includes blending of raw components and subsequent heat treatment. Solutions of aluminum and iron sulfate with ammonia bicarbonate admixture heated to 40-600C are used as raw materials to produce slurry of aluminum and iron bicarbonates. Precipitate is separated by filtration, washed and dried. Heat treatment is carried out at 1150-12000C to provide solid solution expressed by general formula Al2-xFexO3, wherein x = 0.30-0.37. Mass part of iron oxide in finished product is 20-25 mass %. Abrasive materials of present invention are useful for finished polishing of metal parts, have polishing ability of 0.37-0.40 mg/min.cm2, provide roughness RZ = 0.07-0.08 mum after polishing and 85-90 %-yield of high-precision accepted metal parts.

EFFECT: environmentally friendly abrasive materials of improved quality.

1 cl, 3 ex, 1 dwg

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