Detergent for surface cleaning from organic contaminants (variants) and uses thereof in cleaning of wells, pipelines, and containers from mineral oil deposition and scurf

FIELD: oil-producing and oil-refining industry.

SUBSTANCE: in the first embodiment claimed detergent contains (mass %): neonol 0.5-4.0; syntamide-5 1-5; sodium metasilicate 8-15; sodium tripolyphosphate 8-15; trisodium phosphate 10-15; sodium polyphosphate 2-10; sodium hydrate 1-5; sodium carbonate 15-23; sodium sulfate up to 100. in the second embodiment detergent additionally contains complexing agent in amount of 1-3 mass %. Mass ratio of neonol/syntamide is 1:0.25-10.0/ Additionally detergent may contain defoaming agent in amount of 0.5 % or less. Cleaning method includes treatment of well, pipeline, or container heated up to 45-98°C with 0.3-3.0 % aqueous solution of abovementioned detergent.

EFFECT: decreased detergent consumption.

7 cl, 2 tbl, 1 ex

 

The invention relates to the technical detergents, namely, technical compositions of detergents, as well as technologies for cleaning their tanks, tanks, tanks of oil tankers, pipelines, washing wells and equipment in the oil and petrochemical industry from mineral, oil, asphalt-bitumen, tar, paraffin contamination, and can also be used to clean equipment and surfaces from lubricants, such as graphite, and oil in engineering enterprises.

Known detergents consisting of compositions of surface-active substances (hereinafter SAS). For example, known detergent preparation for A.S. USSR №410642, CL. 11 D 1/831, publ. 1972, containing soda ash, sodium tripolyphosphate, metasilicate sodium and nonionic surfactants - polietilenglikolya ether di-tert-butylphenol (drug ML-51).

The disadvantages of this known detergent are low cleaning ability and stabilization them part washed of impurities in the volume of the working solution, which degrades its performance and reduces the removal of organic contaminants, particularly oil before draining working fluid into the sewer.

Known detergents for cleaning metal surfaces "TEMP-100" as the USSR №644819 (published on the. 1978), "TEMP-D" as the USSR №973607 (publ. 1980), detergent "WASP" by A.S. USSR №1004466 (publ. 1981), containing nonionic surfactants, metasilicate sodium, di - or trisodium phosphate, soda ash and a small amount of potassium salt of polyoxyethylene alkyl phenols phosphoric acid.

Despite the satisfactory cleaning ability, the solutions of these funds kept in the emulsified state is still a significant amount of contaminants, which reduces the washing ability in the washing process due to re-deposition of contaminants on the surface to be cleaned and does not allow you to drain the used solutions into the sewer without pretreatment.

It is also known technical detergent to clean the metal surfaces of oil and oil spills on the patent of Russian Federation №2194748. This tool contains as a surfactant neonol AF9-12in the amount of 2.4-3.6 wt.%, neonol AF6-9- 2.4 to 3.6 wt.%, of 0.4-0.6 wt.% sodium salt alkylbenzenesulfonate (sulfonic acid). Additionally, the specified detergent contains, wt%: soda ash - 51,0-64,0; sodium tripolyphosphate 13,0-28,0; trisodium phosphate 13,0-17,0.

The disadvantages of this tool include the high foaming and foam stability of aqueous solutions, which complicates its use in automatic washing machines and washing (of the development) oil wells by drawing them in solution. In addition, the tool is difficult to remove asphalt-bitumen and paraffin pollution and unsuitable for preparation of working solutions in water of high hardness and strongly saline (sea) water.

The prior art also known a number of detergents for cleaning metal surfaces by RF patents №2079550 (publ. 1995) and No. 2132368 (publ. 1999)containing neinogennye surfactants: neonol AF9-12and neonol AF9-6, sodium tripolyphosphate, or trisodium phosphate and soda ash. These funds are modifications of the above analogue RF patent No. 2194748.

The main disadvantage of these funds should be attributed not high enough ability to organic pollution, in particular, oil-resinous compounds, graphite lubricants and the inability to reuse detergent.

Also known detergent for cleaning metal surfaces by RF patent No. 2277582, CL. 11D 3/075, publ. 2006, contains, wt%: the mixture neinogennye surfactants Berol-Lfji 61 (a mixture of ethoxylates of alcohols and Alkylglucoside) 0,5-1,0; trisodium phosphate 8,0-10; sodium polyphosphate 4,0-10,0; caustic soda 30,0-40,0 and soda ash to 100.

It should be noted that the known detergent is a modification of the trivial preparations for washing contaminants in metallurgy, is masinostroenie and oil industry, when the cleanup operation was performed using a 40%caustic soda. A disadvantage of this known detergent is that it is difficult to remove oil contamination, graphite grease and asphaltoresinparaffin deposits (hereinafter ASPO), and has high corrosion activity in relation to the surface being cleaned, which makes it very problematic use it for washing process equipment, tanks and wells. In addition, as surface-active substances in the formulation known tools are expensive imported drugs, which also does not provide sufficient detergency and duration of use solutions. It should be noted that the specified means, including a concentrated sodium hydroxide (caustic soda) - the substance of the 2nd class of hazard (hazardous substances), requires special measures of protection of the skin, respiratory and vision.

Closest to the proposed cleaning tool for the purpose is a detergent for cleaning metal surfaces by RF patent No. 2259393, CL. 11D 1/02, publ. 2005, which contains, wt%: ionic surfactant - sinterol 10,0-12,0; metasilicate sodium 2,0-5,0; sodium tripolyphosphate or trisodium phosphate 15,0-20,0; bactericidal anti-corrosion additive 3,0-5,0; the carbonate is of the atrium (soda ash) to 100.

However, the known tool is difficult to remove paraffin, characterized by a low efficiency in saline water and high capacity of working solutions for oil products, which requires additional processing by the clearing of these products.

To understand the nature of organic contaminants encountered during oil production and processing, it is necessary to clarify the following. Oil is a complicated mixture of paraffin, cycloparaffinic and aromatic hydrocarbons, which contain components with a wide range of properties. Removing oil contained in geological formations, often hampered by the presence of solid asphaltene precipitation, which can be deposited together with waxy solids, forming asphaltoresinparaffin deposits (ARPD). These solids tend to clog pores oil reservoir in the bottom-hole zone and score Elevator column, oilfield equipment and pipelines, through which is pumped the oil and settle to the tank walls. The result can be a reduction in well productivity, or change the settings of pumping, or severe contamination of precipitation tanks of petroleum products, more viscous.

There are various ways that you can use to remove sediment oil is of FL and their deposits (within the present application the term "precipitation products and their deposits" refers to the residual film (waste oil), viscous education oil and paraffin), for example, mechanical methods (scratching) and chemical methods by treating the wells, pipelines, tanks, various detergent formulations: hot oil (RF Patent No. 2095546, CL. EV 37/06, publ. 1997), organic solvents (A.S. USSR №9200197, CL. EV 37/06, publ. 1982), technological water-soluble liquid surfactant-based (A.S. USSR №1789543, CL. EV 37/06, publ. 1993) and their various combinations.

However, these methods are not without drawbacks, namely: the use of oil is not always economically beneficial, as it causes the loss of valuable raw materials; the use of organic solvents present a high fire risk; the use of a known process fluids based surfactants is limited in terms of processing, namely, the characteristics of the wells or on the composition of deposits (for example, some surfactants are not compatible with saline water that may be present in the wells, pipelines, and tanks, not dissolves the precipitation of mineral oil and paraffin different chemical composition and so on).

Closest to the proposed method of cleaning wells, pipelines and tanks from precipitation products and their deposits is the method described in the patent of Russian Federation №2209937, CL. E 21 In 37/06, publ. 2003, under the which make processing of the well or pipeline aqueous solution of 1-2%concentration not heated above 60° With the washing reagent containing powdered synthetic detergent (CMC), including not less than 12 wt.% Surfactant, at least 10.5 wt.% phosphate salts in terms of P2About5and at least 2 wt.% sodium silicate in terms of SiO2and powder technical cleanser (TMS), including not less than 4.5 wt.% Surfactant, at least 11 wt.% phosphate salts in terms of P2O5and not less than 1.7 wt.% sodium silicate in terms of SiO2, in the following ratio, wt.%: CMC 20-30; TMS 70-80. This method is applicable for the cleaning of tanks.

However, this known method does not provide a positive result in the presence of saline water with a density above 1,005 g/cm3because when this occurs the precipitation. In addition, a known method can be implemented only when the temperature of the washing reagent is not above 60°because at a higher temperature, it loses its detergent properties, which does not allow to deal with old, for example, betonosmesitelnymi, precipitation of mineral oil and paraffin and leads to increased consumption as reagent and processing time. All this reduces the effectiveness of the method.

When creating inventions - the two versions of recipe detergent "PAN", the aim was to obtain a detergent that would have to the complex physico-chemical properties: solvent, wetting and degreasing properties. Unified technical result provided while both versions of the recipe, is to reduce the consumption of detergent, foaming and capacity of working solutions for oil products, and increase the degree of purification from chronic pollution, and also in the preservation of these properties in a wide temperature range up to 98°and in the presence of water with different degrees of mineralization.

This technical result is achieved in that the detergent to clean the surface from organic contaminants, including surfactants surfactants, phosphate-containing reagent, metasilicate sodium and soda ash, in the first embodiment further comprises caustic soda, sodium polyphosphate and sodium sulfate as the surfactant comprises a mixture of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, and as a phosphate-containing reagent is sodium tripolyphosphate and trisodium phosphate, in the following ratio, wt.%:

neonol - 0,5-4,0;

sintimid-5 - 1,0-5,0;

metasilicate sodium - 8,0-15,0;

sodium tripolyphosphate - 8,0-15,0;

trisodium phosphate - 10,0-15,0;

polyphosphate sodium - 2,0-10,0;

caustic soda - 1,0-5,0;

soda ash - 15,0-23,0;

the sodium sulfate to 100,

and as for the second option, additional content is tons of caustic soda, the sodium polyphosphate, sodium sulfate and complexing agents, as the surfactant comprises a mixture of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, and as a phosphate-containing reagent is sodium tripolyphosphate and trisodium phosphate, in the following ratio, wt.%:

neonol - 0,5-4,0;

sintimid-5 - 1,0-5,0;

metasilicate sodium - 8,0-15,0;

sodium tripolyphosphate - 8,0-15,0;

trisodium phosphate - 10,0-15,0;

polyphosphate sodium - 2,0-10,0;

caustic soda - 1,0-5,0;

soda ash - 15,0-23,0;

the complexing agents - 1,0-3,0;

the sodium sulfate to 100.

As complexing agents cleanser contains koriat and/or Trilon B.

Both versions detergent further comprises a defoamer in an amount up to 0.3 wt.%.

This technical result is achieved through a synergistic effect of the combination used in detergent components when their stated proportions.

In the claimed invention is a method of cleaning wells, pipelines and tanks from precipitation products and their deposits, the aim was to improve its efficiency due to the removal of these sediments and deposits, including chronic and Corky, and the possibilities of the method at the temperature of the working solution of detergent to 98°C.

<> To solve the above technical problem is proposed a method of cleaning wells, pipelines and tanks from precipitation products and their deposits, including the processing of wells, pipeline or vessel is heated in an aqueous solution of detergent reagent containing a mixture of surfactants surfactants, phosphate salts and sodium silicate, as a cleaning reagent use detergent to clean the surface from organic sediments, consisting of a mixture of surfactants of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, of sodium tripolyphosphate, trisodium phosphate, sodium polyphosphate, sodium metasilicate, soda caustic soda and sulphate of soda sodium taken in the following ratio, wt.%:

neonol - 0,5-4,0;

sintimid-5 - 1,0-5,0;

metasilicate sodium - 8,0-15,0;

sodium tripolyphosphate - 8,0-15,0;

trisodium phosphate - 10,0-15,0;

polyphosphate sodium - 2,0-10,0;

caustic soda - 1,0-5,0;

soda ash - 15,0-23,0;

the sodium sulfate to 100,

or use cleanser, consisting of a mixture of surfactants of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, of sodium tripolyphosphate, trisodium phosphate, sodium polyphosphate, sodium metasilicate, caustic soda, soda ash, complexing agents and sodium sulfate, taken in the following ratio is Oseni, wt.%:

neonol - 0,5-4,0;

sintimid-5 - 1,0-5,0;

metasilicate sodium - 8,0-15,0;

sodium tripolyphosphate - 8,0-15,0;

trisodium phosphate - 10,0-15,0;

polyphosphate sodium - 2,0-10,0;

caustic soda - 1,0-5,0;

soda ash - 15,0-23,0;

the complexing agents - 1,0-3,0;

the sodium sulfate to 100,

and well treatment, pipeline or vessel carried out in an aqueous solution of the specified detergent 0,3-3,0%concentration, at a temperature of 45-98°C.

Improving the efficiency of purification by precipitation of oil and sediment deposits on the proposed method provides due to the high activity of the detergent in a wide range of temperatures and avoid precipitation when mixed with saline water.

To obtain the proposed detergents "PAN", both in the laboratory and in field conditions, we used the following substances:

- neonol - ethoxylated ALKYLPHENOLS on the basis of propylene trimer type AF9-6on THE other 38.507-63-171-91 or AF9-12on THE other 2483-077-05766801-98;

- sintimid-5 - polietilenglikolya esters of monoethanolamide synthetic fatty acid fraction C10-C18on THE other 6-02-640-80;

- metasilicate sodium on THE 2145-026-00204872-2002;

the sodium tripolyphosphate in THE 113-00-05759020-25-95 or THE 2148-095-43499406-98;

- trisodium phosphate according to GOST 201-76;

-polyphosphate sodium GOST 20291-80;

- caustic soda (sodium hydroxide) according to GOST 2263-79;

- soda ash (sodium carbonate) TU GOST 5100-85;

the complexing agents:

- corelet is a mixture of sodium salts of nitrilotriethanol acid in THE 6-09-20-243-94;

- Trilon B - disodium salt of ethylenediaminetetraacetic acid on THE 113-04-260-87;

the antifoam of PGCO-1001 on THE 6-00-0576-441-64-92.

We offer detergents were prepared by dry mixing the ingredients in the stated their quantitative value.

For testing in the laboratory was prepared several compositions of the proposed drug, the composition of which is given in table 1.

When laboratory testing has determined the following properties offer detergent "PAN":

- ability worker aqueous detergent "PAN" in respect of paraffin and graphite lubricants;

- foaming capacity;

the working capacity of an aqueous solution of detergent in respect of petroleum products.

The cleaning ability was determined by the gravimetric method, the essence of which lies in the definition of univemity organic contaminants from the surface of the samples. Washing samples carried out on a laboratory washing plant by dipping method with excitation detergent solution using a stirrer having a constant the number of revolutions, equal to 3000 Rev/min the Total concentration of detergent in the working solution is 7 g/DM3(i.e. working solution of 0.7%concentration), wash temperature from 45 to 98°With the majority of the experiments were conducted at a temperature of 75°C. For the tests take samples, made of steel grade St-3, wash them under running water with acetone, dried and weighed on an analytical balance. Next, the sample pollute deposits with a real oil production facilities (tubing, elements of submersible pumps and the like) by dipping into the melt or contaminate the surface of the sample with graphite grease. Samples cooled at room temperature, weighed and placed in a washing machine, where washed for 3 minutes. After washing, the samples are dried in air to constant mass. Ability is defined as the ratio of the mass of contaminants removed from the surface of the sample to the total mass of impurities present on the surface prior to cleaning, expressed as a percentage. Washing capacity was determined at various temperatures of the working solution, and also at various salinity of water used for preparation of working solution (with a low degree of mineralization of 4.5 ppm and with a high degree of mineralization 45 ppm, which was obtained by dissolution of natural sea salt in a specified number distill vannoy water).

Foaming capacity is determined according to GOST 22567.15-95 on the methodology adopted for synthetic detergents.

The working capacity of an aqueous solution of detergent in respect of petroleum products is determined by the following method. In a metal Cup pour 1 DM3a 0.7%aqueous solution of the test detergent on the surface put a plastic ring. In the center of the ring contribute 1.6 g model oil (mazut M-40 and oil MS-40 in a mass ratio of 1:1). The mixture is kept for 1 min, then stirred with a propeller stirrer with a speed of 3000 rpm for 3 minutes after mixing the emulsion is poured in the tank for sludge (separating funnel), defend 3 hours, then the aqueous layer was separated, take a sample and analyze chloroform method using electrophotometer. The oil content in the solution is determined by the calibration curve.

The data obtained in the tests are shown in table 2.

The data in table 2 show that the proposed cleanser (both) at the stated quantitative ratio of the components has the following advantages over known prototype:

- cleaning ability with respect to both paraffin and graphite lubricants type USS above 1.6-1.8 times as in brackish water that is in the water with a high degree of mineralization, that allows you to more effectively clean the surfaces from organic contaminants;

- foaming below 3.8-5.4 times that provides technological applications for handling pumps, especially important in field conditions;

- capacity of the working solution in respect of the product in an 18.2-25.4 times, which allows us to bypass the costly cleanup of working solutions and to reduce negative impact on the environment;

- works effectively even at high temperatures up to 98°With no loss of active properties.

It should be noted that in table 2 (experiment 16) the data for testing analogue RF patent No. 2277582 due to the fact that this cleanser is close enough to the claimed and study its properties allows a better understanding of the invention.

Simultaneously with the specified was further established that the proposed cleanser "PAN" (also both) provides a high duration of effective work of the working solution (up to 300 transactions provided recycling and doreplace) and is characterized by the demulsifying capability, providing partial separation of the reservoir fluid in the sludge, oil and water. All of this shows a high activity and adaptability of the inventive detergents for cleaning surfaces from organically the dirt.

We offer detergent "PAN" was also tested in field conditions when implementing the proposed method of removal of deposits on the number of wells in the Volga region. The method is implemented as follows:

- prepare detergent "PAN" by dry mixing the components in the specified amounts (specified means "PAN" can be prepared in the factory and delivered to the well in bags);

- in capacity to prepare a concentrated (about 15%) working solution of detergent "PAN" by dissolving in hot water (this water can be used not only fresh, but also mineralized waste water);

next pump pump rated part of the said concentrated solution in the tank truck AC-10 (it is partially filled with the calculated amount of water) to obtain a working solution of detergent "PAN" from 0.3 to 3.0%concentration;

- prepared working solution for compressed to the high pressure line (heated by steam install foam to a temperature 45-98°depending on the inveteracy and type of sediment, and depending on the mining method: using a sucker rod pump, sucker rod pump or centrifugal pump centrifugal pump in the well (it is possible to produce circulation or to apply a method tubs);

Example. The tests were carried out during planned maintenance on the well depth 1854 m When lifting from her tubing (tubing) on their outer surface was observed deposition of sediment. The work plan was required to install explosion-packer at a depth of 1775 meters But managed to prosubsidirovat production casing only to a depth of 120 m (hereinafter prevented the tube from the sediment). Produced a combined flushing of the borehole bottom aqueous solution of known detergent ML-81B in volume 48 m3. Managed to prosubsidirovat production casing only at a depth of 260 m Then pumped distillate in the amount of 7 m3. Further still held well wash water solution ML-81B in volume 48 m3. The tube from the sediment to erode and wash failed. The template was stuck at a depth of 1765 m the Time spent on these transactions amounted to 116 hours. After that, in consultation with the Department for capital repair of wells, it was decided to produce a well treatment by the claimed method with detergent "PAN". This made downloading circulation 48 m3within 1 hour, heated to 75°With a 2%aqueous solution of "PAN" lowered through the tubing with the pen. After lifting the pen Geophysics the static template 118 mm reached the depth 1781,4 m Explosion-packer set at a specified depth 1775,4 m and continued work on putting the well into operation.

The above proves the effectiveness of the proposed method and the high activity of the detergent "PAN" (when processing was completely eradicated tube ARPD for a short period of time) compared with applicable today detergent ML-81B. Furthermore, this efficiency is ensured at low consumption of the inventive detergent.

In addition, during commercial processing of a number of wells proposed detergent "PAN" (means tested different formulations of both versions) were achieved the following success indicators:

- restoration of patency of Elevator
(removal of hydrate plugs and ASPO)98%
- rasklinivanie rod and a submersible pump96%
- effectiveness relative to traditional
methods (washing solvents and hot oil)157%.

The proposed method can be used when cleaning up oil pipelines and tanks from organic deposits of oil and sediment deposits. The order of operations and the PE the ima identical.

When using the proposed method with the use of "PAN" service organizations were cleaned tubing, sucker rod pumps, submersible pumps. The results are as follows:

the degree of cleaning equipment95-100%
- quality wash
pollution, until the
old,
biomonitoringCleaning a particularly difficult

Also tests were carried out with the cleaning of tanks, in which the transported oil. The results are as follows:

- reduced cleaning time50%
- quality cleaningdoes not require manual cleanup
- the flooding washed away
oil after a three-hour
sludge without heatingno more than 10%

Thus, the claimed detergent "PAN" effectively cleans dirt from the surface of the organic nature and at the same time provides a high technological effect of using the proposed method for cleaning wells, t is unaproved and vessels from the oil and deposits.

Table 1
The composition of the detergent compositions prepared for testing
№ p/pComponentsThe content of components in detergent, wt.%
Track number
123456789101112The prototype patent 2259393Similar patent 2277582
1Neonol0,54,02,52,52,52,52,52,52,52,52,52,5--
2Sintimid5,01,02,52,52,52,52,52,52,52,52,52,5--
3Metasilicate sodium8,08,015,011,011,011,0 11,011,011,011,011,03,5-
4Sodium tripolyphosphate8,08,08,015,011,011,011,011,011,011,011,011,08,75-
5Trisodium phosphate10,010,010,010.015,012,512,512,512,512,512,512,58,759,0
6Polyphosphate sodium10,010,010,010,010,02,06,06,06,06,06,06,0-7,0
7Corelet0,00,00,00,00,03,01,51,50,00,00,00,0-35,0
8Trilon B0,00,00,0 0,00,00,00,01,51,51,51,51,5--
9Caustic soda1,01,01,01,01,01,01,01,05,03,03,03,0-48,25
10Soda ash23,023,023,023,023,023,023,023,023,015,019,019,064,0-
11Antifoam0,050,050,050,050,050,050,050,050,050,050,00,2--
12The sodium sulfate34,4534,9527,9524,9523,9531,4528,9527,4524,9534,9531,030,80--
13With narol ------------11,0-
14Bactericidal anti-corrosion additive------------4,0-
15The mixture neinogennye surfactants Berol-LF + GI (a mixture of ethoxylates of alcohols and Alkylglucoside)-------------0,75

Table 2
Data about properties of the proposed and known detergents
no experienceThe number of the detergent composition of table 1The cleaning ability on asphaltoresinparaffin sediments, %The cleaning ability on the dirt graphite grease USS, %High is and post foam, mmCapacity solution for oil products, mg/DM3
drinking watersea waterdrinking watersea water
11898897974043
22868598964533
33909097953838
44939199984835
55888597965040
66928798973545
77908899963847
88959397984639
9991909695 4741
1010929498944046
1111949197953544
1212929299984239
13*7848293903045
14**7979599954259
15The prototype patent 225939354378170190837
16Similar patent 227758250497572200920
* - the trial was carried out at a temperature of 45°C;
** - the trial was carried out at a temperature of 98°C.

1. Detergent to clean the surface from organic contamination, including surface-active substances (surfactants), phosphate-containing reagent, metasilicate sodium and soda is an ode, characterized in that it additionally contains caustic soda, sodium polyphosphate and sodium sulfate as the surfactant comprises a mixture of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, and as a phosphate-containing reagent is sodium tripolyphosphate and trisodium phosphate, in the following ratio, wt.%:

neonol0,5-4,0
sintimid-51-5
metasilicate sodium8-15
sodium tripolyphosphate8-15
trisodium phosphate10-15
polyphosphate sodium2-10
caustic soda1-5
soda ash15-23
the sodium sulfate100

2. The detergent according to claim 1, characterized in that it further comprises a defoamer in an amount up to 0.3 wt.%.

3. Detergent to clean the surface from organic contamination, including surface-active substances (surfactants), phosphate-containing reagent, metasilicate sodium and soda ash, characterized in that it additionally contains caustic soda, sodium polyphosphate, sodium sulfate and complexing agents, as the AV contains a mixture of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10,0 respectively, and as a phosphate-containing reagent is sodium tripolyphosphate and trisodium phosphate, in the following ratio, wt.%:

neonol0,5-4,0
sintimid-51-5
metasilicate sodium8-15
sodium tripolyphosphate8-15
trisodium phosphate10-15
polyphosphate sodium2-10
caustic soda1-5
soda ash15-23
the complexing agents1-3
the sodium sulfate100

4. The detergent according to claim 3, characterized in that as complexing agents it contains koriat and/or Trilon B.

5. The detergent according to claim 3, characterized in that it further comprises a defoamer in an amount up to 0.3 wt.%.

6. The method of cleaning wells, pipelines and tanks from precipitation products and their deposits, including the processing of wells, pipeline or vessel is heated in an aqueous solution of detergent reagent containing a mixture of surface-active substances (surfactants), phosphoric acid salts and sodium silicate, characterized in that the washing reagent is used detergent environments who has to clean the surface from organic deposits, consisting of a mixture of surfactants of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, of sodium tripolyphosphate, trisodium phosphate, sodium polyphosphate, sodium metasilicate, caustic soda, soda ash and sodium sulfate, taken in the following ratio, wt.%:

neonol0,5-4,0;
sintimid-51-5
metasilicate sodium8-15
sodium tripolyphosphate8-15
trisodium phosphate10-15
polyphosphate sodium2-10
caustic soda1-5
soda ash15-23
the sodium sulfate100

or use cleanser, consisting of a mixture of surfactants of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, of sodium tripolyphosphate, trisodium phosphate, sodium polyphosphate, sodium metasilicate, caustic soda, soda ash, complexing agents and sodium sulfate, taken in the following ratio, wt.%:

neonol0,5-4,0
sintimid-51-5
metasilicate on the ry 8-15
sodium tripolyphosphate8-15
trisodium phosphate10-15
polyphosphate sodium2-10
caustic soda1-5
soda ash15-23
the complexing agents1-3
the sodium sulfate100

and well treatment, pipeline or vessel carried out in an aqueous solution of the specified detergent 0,3-3,0%concentration, at a temperature of 45-98°C.

7. The method according to claim 1, wherein the detergent further comprises a defoamer in an amount up to 0.3 wt.%.



 

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13 cl, 20 dwg, 1 tbl, 3 ex

FIELD: oil and gas production, particularly for metered corrosion inhibitor, paraffin and salt accumulation inhibitor, as well as demulsifying agent injection in oil well.

SUBSTANCE: method involves performing periodic regent supply in hole annuity of well with the use of proportioning pump. In the case of underground repair of sticky well supply cable of centrifugal pump electric motor is substituted for cable with capillary pipe. The cable with capillary pipe is connected to flow string and is lowered in well. Chemical reagent is injected in well via the capillary pipe to downhole pump inlet or within perforation interval of the well. To provide chemical reagent supply capillary pipe end is connected with polyethylene capillary pipe having design length with the use of connection nipple provided with weighting jet.

EFFECT: provision of guaranteed reagent supply to pump inlet or within well perforation interval, possibility to change class of reagent to be supplied in well and amount of reagent in dependence of well operation parameters.

1 dwg

FIELD: oil industry, namely, engineering of equipment for oil wells, possible use for maintaining optimal thermal and chemical modes in said wells to prevent and remove paraffin-hydrate sedimentations on internal surface of tubing pipe.

SUBSTANCE: in accordance to method, linear heating element is lowered into well. Sedimentations are heated up to melting temperature. In accordance to invention, as linear heating element, load-carrying geo-physical cable with central capillary is used. Chemical reagents are fed through the capillary to facilitate destruction of sedimentations. Device contains linear heating element, including at least two power elements, positioned in cover and connected to power source. In accordance to invention, as linear heating element, load-carrying geophysical cable is used, direct and reverse conductors of which are made in form of metallic ribbons, applied along screw line with opposite winding direction and with gap for creation of thermal losses in wired magnetic armor of cable under effect of high frequency current, which armor acts as heat-dissipating element. Inside direct conductor of cable, central capillary is located for feeding chemical reagents into well. Isolating cushion for armor is positioned above reverse conductor.

EFFECT: maintained optimal ratio of thermal and chemical conditions in well, prevention and removal of paraffin-hydrate and other sedimentations in wells with possible geo-physical measurements during removal of sedimentations, usage of less thermo-resistant isolation and simultaneous feeding of chemical reagent into well.

5 dwg

FIELD: oil extractive industry, in particular, devices for feeding chemical reagents into wells for preventing precipitation of salts and paraffin in electric centrifugal pumps and tubing pipes.

SUBSTANCE: device includes body with apertures, connected by upper end to tubing pipe and containing hard reagent, positioned with possible movement of well liquid flow. In accordance to invention hard reagent is placed inside highly penetrable foam-metallic cover, which forms a gap with body and has three-dimensional mesh-cellular structure with dimensions of cells 2-5mm, and specific area of surface of 500-1400 m2/m3, while tubing pipe is provided with self-packing elastic collars, while apertures are made on lower end of body, and also at section of tubing pipe above collars, while apertures on the body have total area comparable to area of apertures on tubing pipe and area of passage cross-section of the latter.

EFFECT: increased evenness of dosing of hard element into flow of drained well liquid under various conditions of operation of oil extractive wells.

4 cl, 2 dwg

FIELD: oil and gas industry, namely, operation of oil extractive wells, product lines and gas lines for various (commercial, etc) purposes.

SUBSTANCE: in accordance to method, solution of oxygen-containing substances is fed and heated up. Mixture of hydrocarbons in pipes and oxygen-containing substances is activated by means of periodically enabling local heaters, which are positioned in a well and inside or outside the pipes, along which petroleum is transported. On first local heaters hydrocarbons and oxygen-containing substances are activated also by waves of negative pressure, while forcing of oxygen-containing substances is performed periodically and in such a way, that during passage of mixture of hydrocarbons and oxygen-containing substances through local heater, temperature of locally heated zones is maintained at level not less than that of mixture's spontaneous inflammation temperature.

EFFECT: decreased laboriousness and energy costs when cleaning pipes for transit of petroleum (hydrocarbons) from paraffin-hydrate and paraffin-tarry sediments, and increased duration of possible operation of pipes without maintenance.

4 cl, 1 ex, 1 dwg

FIELD: oil and gas production, particularly experimental research of salt deposit processes in downhole equipment, to design new downhole equipment and construction materials for downhole equipment production.

SUBSTANCE: method involves preparing model mixture, which imitates formation fluid and includes aqueous solutions and suspensions of corresponding salts and/or salt-forming substances; delivering the model mixture to sample, which imitates downhole equipment part. Before model mixture supply the model mixture is saturated with gas under pressure exceeding atmospheric pressure, wherein the gas form salt-forming composition as a result of reaction with at least one salt included in the model mixture and/or formed in the mixture. The salt-forming composition provides creation of stable aqueous solution having aqueous solubility limit, which provides stable aqueous solution forming under predetermined initial salt concentration in model mixture. Sample is heated up to temperature providing downhole conditions imitation so that sample surface temperature exceeding temperature necessary for salt-forming composition decomposition reaction, which leads to initial salt precipitation on above surface, but is less than model mixture boiling temperature.

EFFECT: increased amount of testing.

19 cl, 1 tbl, 2 ex, 2 dwg

FIELD: oil production industry, particularly to treat bottomhole formation zone and injection wells, which are converted from producing wells.

SUBSTANCE: method involves injecting solvent composition mixed with surfactant in formation; forcing composition in formation; performing time delay and putting well in operation. Before the composition forcing in formation the composition is held at face within the limits of well filter location for 1-2 hours in dependence of filter contamination with asphalt-tar-paraffin deposits or activating technical means usage. The solvent is distillation residue obtained during ethylbenzene and A or B grade styrene rectification. The surfactant is grade B liquid sulphanole taken in amount of 1-10% by the distillation residue weight.

EFFECT: increased efficiency, reduced time and material consumption for bottomhole formation zone treatment.

FIELD: oil industry, particularly to stimulate or resume oil and gas well operation by performing thermal-chemical treating and cleaning of well bottom zone to remove deposits, namely asphalt-tar and paraffin deposits.

SUBSTANCE: method involves lowering flow string in well interval to be treated via casing pipe; supplying heat-generating substances; creating increased pressure; treating bottomhole formation zone; performing technological time delay and applying depression action to heated zone to be treated. Lower part of flow string is provided with uncontrollable plug valve, which is pinned to flow string and defines sealed cavity along with flow string interior. As flow string is lowered in well hydrogen peroxide is supplied in flow string. Then hydrogen peroxide-neutral acetate buffer solution is fed and the buffer solution is isolated from hydrogen peroxide with uncontrollable plug valve. 5% manganese solution and water are supplied in well. Acetate buffer solution has density exceeding that of manganese solution. Manganese solution density exceeds water density. After flow string lowering in well backpressure is created in well interval to be treated by filling space between casing pipe and flow string with water. Then pressure is increased in flow string. Once pressure jumps water is supplied via flow string in well interval to be treated. After technological time delay execution bottomhole formation zone is subjected to depression action by flushing thereof with aerated acetate buffer solution.

EFFECT: increased efficiency of well bottom zone treatment.

1 dwg

Cleansing agent // 2306330

FIELD: cleansers.

SUBSTANCE: cleansing agent contains, % by volume: butyl cellosolve as organic solvent, 1-16; N-methylpyrrolidone as anionic surfactant, 1-10; synthanol or neonol as nonionic surfactant, 1-20; sodium hydroxide, 1-9 (on conversion to active substance); Trilon B, 0.4-0.6; thimol phthaleine, 0.04-0.06; and drinking water, the balance.

EFFECT: enhanced detergent power (especially when reused), enhanced efficiency of washing out at low temperatures (45-55°C), and widened range of washable pollutions.

2 cl, 6 ex

FIELD: medicine.

SUBSTANCE: claimed agent contains alkyldimethylbenzylammonium chloride, urotropin, surfactant, alcohol, and water. As low molecular mono- or triatomic low toxic alcohol it contains ethanol or isopropanol, additionally it may contain flavor or colorant.

EFFECT: agent with bactericidal and anti-tuberculosis activity.

3 cl, 1 tbl, 1 ex

FIELD: metallurgy industry; mechanical engineering; motor-car industry; other industries; production of the washing agent for purification of the metallic surfaces.

SUBSTANCE: the invention is pertaining to removal of the fatty and muddy pollutions, rust-preventing lubricants, the stuck metal particles, dust and may be used in metallurgy industry, mechanical engineering, motor-car industry and other industries. Substance: the washing agent contains the sodium hydroxide, the sodium carbonate, sodium metasilicate, sodium tripolyphosphate, oxyethylated monononylphenol on the basis of trimers of propylene with 9-12 moles of ethylene oxide and the flocculant in amount of 0.1-2.0 mass %. The flocculant represents the polymer prop-2-eneamide with N,N,N-trimethyl-3-[(1-oxo-2-propeneamino)-propaneamine chloride]. The technical result of the invention is reduction of the washing duration in 2-2.66 times and the increased total operation time of the washing solution in 1.66-3.4 times.

EFFECT: the invention ensures reduction of the washing duration in about 2-3 times and the increased total operation life of the washing solution in about 2-3 times.

1 tbl, 6 ex

FIELD: detergents.

SUBSTANCE: invention is meant for use in alcohol industry areas where surface pollution take place with organic-origin products such as lubricating oil, grease, petroleum, emulsions, asphalt-tar-wax deposits, e.g. during manufacture or repair of equipment, in particular in mechanical engineering, in transport, in maintenance stations, and in agricultural complexes. Detergent is composed of, wt %: interaction product of isononylphenol, triethanolamine, and sodium hydroxide 20-25, sodium methasilicate (liquid glass) 5.0, tripolyphosphate 20.0-24.9, sodium bichromate 0.07-0.10, polyelectrolyte 8-12, benzoic acid salts 0.01-0.02, and sodium carbonate to 100%.

EFFECT: improved detergent and emulsifying ability of agent, reduced consumption of agent, and enlarged assortment of detergents for metallic surfaces.

4 cl, 2 ex

FIELD: cleaning stone, faces of buildings in particular made from natural materials (marble, limestone, shell rock) from various atmospheric contaminants, deposits, smoke black, soot, salts.

SUBSTANCE: proposed detergent contains the following components, mass-%: isopropyl alcohol, 25-35; ammonium fluoride, 5-20;surfactant, 3-5; the remainder being water.

EFFECT: enhanced washing ability at any level of pollution with no change in physico-mechanical properties of surface being cleaned.

3 tbl, 6 ex

FIELD: laundry detergent useful in both hand laundry and washing machine.

SUBSTANCE: claimed synthetic detergent contains (mass %): surfactant 6,0-8,0 non-ionic surfactant 2-4; sodium tripolyphosphate 20; peroxide bleaching agent 10-15; carboxymethylcellulose (calculated as 100 mass % of base substance) 0.5; polycarboxylate 0.25-1.0; sodium silicate (calculated as SiO2) 3-5; soda ash 5.0; optic bleaching agent 0.1-0.3; polyvinyl pyrrolidone 0.3-0.5; tetraacetylethylene diamine 1-2; 2,6-ditertbuthyl4-dimethyl-aminomethylphenole as stabilizer 0.005-0.20; flavor 0.1-0.2; reaction product of oxyethylated isononylphenole, triethanolamine and sodium hydroxide 2-3; and balance: water and sodium sulfate to 100 %. Surfactant contains linear sodium alkylbenzenesulfonate or mixture thereof with fatty acid soap, or carboxymethylated isononylphenole ethoxylate sodium salt; non-ionic surfactant contains oxyethylated alkylphenoles or polyethylene glycol esters of synthetic fatty alcohols.

EFFECT: detergent of improved quality providing additional softness of washed fabric.

4 cl, 2 tbl, 6 ex

FIELD: detergents.

SUBSTANCE: invention provides detergent that can be used in all industrial areas wherein surfaces may be polluted by organic-origin products (oil, grease, crude oil, emulsions, asphalt-tar-paraffin deposits), for instance in production processes and equipment restoration, including mechanical engineering, transport, service centers, agricultural farms. Detergent contains, wt %: "sinterol" 10-12, sodium metacilicate (liquid glass) 2-5, sodium tripolyphosphate or trisodium phosphate 15-20, bactericidal-anticorrosive additive 3-5, and calcium carbonate to 100%. Bactericidal-anticorrosive additive is quaternary ammonium salt obtained by reaction of N,N-tetramethyldiaminomethane with alkyl- and alkenyl chlorides. Thus obtained detergent possesses a complex of useful physicochemical properties: dissolving, moistening, degreasing, emulsifying, and anticorrosive capabilities.

EFFECT: improved consumer properties, extended application area, and reduced consumption of detergent.

3 cl, 2 tbl, 6 ex

Synthetic detergent // 2259392

FIELD: detergents.

SUBSTANCE: detergent applicable for washing and watering of all types of textiles both under domestic conditions and in industrial contains, wt %: surfactants 1-14, sodium tripolyphosphate 20-30, sodium liquid glass 3, carboxymethylcellulose 0.5-0.8, polycarboxylate "Akremon" 0.1-1.5, soda ash 5-10, optical bleacher 0.2-0.3, odorant 0.05-0.1, sodium chloride 0.5-4.0, oxyethylated isononylphenol/triethanolamine/sodium hydroxide interaction product 1-14, water and sodium sulfate to 100%. Detergent may further contain of nonionic surfactants 0-3, sodium bicarbonate 0-5, polyvinylpyrrolidone 0-0.3, and foam suppressor 0-0.2.

EFFECT: enhanced detergent effect and acquired softening effect.

8 cl, 2 tbl, 8 ex

FIELD: detergents.

SUBSTANCE: detergent solution suitable for use in medicine, food industry, mechanical engineering, and other industries as well as in domestic practice to treat various polluted surfaces contains 10.4-18.5% surfactant composition, including nonionic surfactant (6.8-11.7%), anionic surfactant (3.1-5.8%), and cationic surfactant (0.5-1.0%), 3.0-9.8% active cleaning additive, 0.5-6.0% disinfecting agent based on polyhexamethyleneguanidine derivatives, and solvent (the balance). Active cleaning additive comprises sodium salts of phosphoric, sulfuric, and silicic acids, and sodium carboxymethylcellulose. Cationic surfactant quaternary ammonium compound, preferably alkyldimethylbenzylammonium chloride or didecyldimethylammonium chloride. Nonionic surfactant preferably consists of mixture constituted by moistening agent, sintanol, and neonol. Anionic preferably consists of sulfanol and alkyl sulfate of primary fatty acids.

EFFECT: improved detergent and anticorrosive properties, increased fungicidal activity, and achieved high antibacterial efficacy allowing detergent solution to significantly widen activity spectrum and application area.

8 cl, 4 tbl, 4 ex

FIELD: detergent composition for metallurgy.

SUBSTANCE: claimed composition contains (g/l): sodium hydroxide 6.05-12.05; sodium carbonate 5.25-10.75; sodium silicate 0.27-0.47; sodium tripolyphosphate 1.20-2.70; propylene trimer-based oxyethylated monoalkyl phenol containing 12 mol of ethylene oxide in molecule 0.073-0.158; propylene trimer-based oxyethylated monoalkyl phenol containing 6 mol of ethylene oxide in molecule 0.054-0.106; antifoaming agent 0.011-0.023; and balance to 1 l: water, wherein mass ratio of surfactant mixture to antifoaming agent is 11.5:1. Composition of present invention is useful in degreasing of rolled metal in rolls at high velocity (20-30 s) continuous treatment before coating (zinc plating, insulated coating, etc.) and affords the ability to provide metal surface of high purity.

EFFECT: detergent with reduced foaming useful for pretreatment of anizotropic electric steel.

2 tbl, 6 ex

FIELD: cleaning stone, faces of buildings in particular made from natural materials (marble, limestone, shell rock) from various atmospheric contaminants, deposits, smoke black, soot, salts.

SUBSTANCE: proposed detergent contains the following components, mass-%: isopropyl alcohol, 25-35; ammonium fluoride, 5-20;surfactant, 3-5; the remainder being water.

EFFECT: enhanced washing ability at any level of pollution with no change in physico-mechanical properties of surface being cleaned.

3 tbl, 6 ex

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