The composition for removing deposits asphaltoresinparaffin

 

(57) Abstract:

The invention relates to the oil industry and can be used to remove asphaltoresinparaffin, resin and paraffin deposits from oil-field equipment, wells and bottom-hole formation zone. The composition contains, by weight. %: waste cyclohexanone fraction 70-80; waste tallow or canola oil 20-30. The technical result - the use of the composition can increase the flow rate by 50-60%, reduce the number of heat treatments 2 times, to reduce the energy consumption of the electric motors of the pumps 16%. 3 table.

The present invention relates to the oil industry and can be used to remove asphaltoresinparaffin, resin and paraffin deposits from oil well equipment and the bottomhole zone of the formation.

Known compositions for removal of sediment containing hexane, ethylbenzol fraction (A. C. the USSR 1620465, From 09 To 3/00, B. I. 2, 1991) and hexane fraction and a light pyrolysis resin (A. C. the USSR 1092164, From 09 To 3/00, B. I. 18, 1984).

The disadvantage of these compounds is their low efficiency in relation to the deposits in a wide range of content of asphaltenes, resins and waxes.

Most BL is), comprising, by weight. %:

is a by - product of the petrochemical production - hexane fraction or a product of oil refining - fraction gasoline - reagent-2" - 25-75;

- monoalkyl ether of polyethylene glycol on the basis of primary fatty alcohols of General formula CnH2n+1O (C2H4O)mn, where n=10-18, m=8-10, or ethoxylated isononylphenol with a degree of oksietilirovannye 9-12 0.5 to 5;

is a by - product of organic synthesis based on aromatic hydrocarbons - the rest.

The disadvantage of this structure is the low boiling point of hexane and gasoline fractions, use of components containing aromatic hydrocarbons, which have a harmful impact on people and the environment, as well as lack of effectiveness for deposits with a high content of waxes, resins and asphaltenes.

The task of the invention

- increase in the rate of removal of deposits with a high content of paraffins, asphaltenes, resins, expansion of raw materials and skilled industrial waste disposal.

This object is achieved so that the composition for removing asphaltoresinparaffin sediments containing a mixture limit is leogardo - waste cyclohexanone fraction in the following ratio, wt. %:

Proven cyclohexanone faction - 70-80

Waste tallow or canola oil - 20-30

The waste production of plastic products - proven cyclohexanone fraction contains, by weight. %:

Cyclohexanone - 71,4-75,0

Heptane-2 - 4,6-of 5.29

Cyclohexane - 1,43-1,71

Cyclopentanone - 2,4-2,86

Cyclohexanol 13,01-14,8

Cyclohexen - 0,7-0,86

Water - 2,00-3,0

The enriched tall oil mainly contains, by weight. %:

Fatty acids (oleic, linoleic and other) - 30-60

Resin acids - 30-60

Neutral substances - 8-20

Oxidized substances - 4-10

Moisture - Up to 8

Waste rapeseed oil, wt. %:

Oleic acid 20

Erucic acid is 56-65

Linoleic acid - To 14

The mixture of exhaust components according to the invention is an oily yellow liquid with a density at 20oC - 944 kg/m3, a water content of 2.0% and a flash point in closed crucible - 45,5oC.

Research on the effectiveness of the dissolution of the deposits was carried out by the method of "cold core" installation that simulates in skariachan components at a temperature of 40-50oC for 15 minutes. The rod is suspended from a flexible thread that runs through the pulley, makes reciprocating motion in the vertical plane by an electric motor. As a result of these movements is flush ASPO studied composition.

Table 1 shows the composition of deposits selected for testing and having a high content of paraffins, asphaltenes and resins.

In tables 2 and 3 present the results of studies on the effectiveness of the dissolution of the deposits in the proposed composition at a temperature of 20oWith and in comparison with the prototype.

From the presented data shows that the proposed structure has good dissolving ability in relation to deposits with a high content of paraffins, asphaltenes and resins.

The composition was tested in the Department of OJSC "Samaraneftegaz". Use it when cleaning the tubing and bottom-hole formation zone has allowed to increase the flow rate by 50-60%, reduce the number of heat treatments 2 times, to reduce the energy consumption of the electric motors of the pumps 16%.

The composition for removing asphaltoresinparaffin sediments containing a mixture of saturated hydrocarbons, characterized in that it additionally contains anonomous fraction in the following ratio of components, wt. %:

Proven cyclohexanone faction - 70 - 80

Waste tallow or canola oil - 20 - 30

 

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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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