Composition for production and transportation of oil and its production method

 

(57) Abstract:

Composition for production and transportation of oil refers to the oil and gas industry, as well as compositions for combating asphaltenesresinous sediments in the bottom-hole zone of oil wells and pipelines. The proposed composition for the production and transportation of oil contains multicomponent mixture of synthetic anionic and nonionic surface-active substances (AS, nonionic surfactants), polyoxyethylene esters of phosphoric acid and a hydrocarbon solvent, and optionally contains an additive aliphatic or aromatic alcohol, or products containing them, in the following ratio, wt. %: multicomponent mixture of natural latex and synthetic, nonionic surfactants, polyoxyethylene alkylation phosphoric acid and hydrocarbon solvent 50-90; aliphatic or aromatic alcohol, or products containing 10-50. The composition is obtained by sequential introduction of ready multicomponent mixture of the above composition aliphatic or aromatic alcohol, or products containing them. The technical result - the reduction of the viscosity of the composition to reduce the hydraulic resistance of the active high-viscosity oil at t is s compositions in the cold season (below the 0oC), which is very important in field conditions, for example, in conditions of the North and Siberia, as well as increase the effectiveness of prevention education asphaltoresinparaffin deposits (ARPD). 2 S. p. f-crystals, 5 PL.

The invention relates to the oil and gas industry, in particular compositions for the production and transportation of oil, as well as compositions for combating asphaltenesresinous deposits in oil field equipment, in the bottom-hole zone of oil wells and pipelines.

Known for containing aliphatic alcohol composition for production and transportation of oil (patent RU N 2001090, 5 C 09 K 3/00, publ. 15.10.93,, bull. N 37-38), which contains a nonionic surfactant (nonionic surfactants) in an amount of 1-10 wt. % with 6-13 oxyethyl groups, sodium Las 5-15 wt.%, sodium alkanesulfonyl 3-30 wt.%, anionic polyelectrolyte mol. m 104-5106in the amount of 1-10 wt.%, aliphatic alcohol of 0.1-20 wt.%, acid rest.

The composition has high washing ability, a wide range of actions to prevent the formation of deposits and reduce the hydraulic resistance of the viscous oil, but it has limited scope, as used in the zones of productive layers.

Famous for containing aliphatic alcohol, the composition for removing paraffin and method thereof (SU C. N 1613471, 5 C 09 K 3/00, publ. 15.12.90, bull. N 46), which contains 17-18 wt.% natural gasoline, 2-3 wt.% the neonols, 50 wt.% ethanol and 30 wt.% sulphuric acid.

Although the composition has good solvent action for deposits, it has limited use in wells with high reservoir temperature (90-100oC and above).

Known for a very close analogue to the composition to prevent the formation asphaltoresinparaffin sediments (SU patent N 1706204, 5 C 09 K 3/00, E 21 B 37/00, publ. 15.11.94, bull. N 21).

This composition is effective in preventing the formation of deposits, has a low hydraulic resistance of the high-viscosity oil during transportation through the pipelines, however, in this structure are not used aromatic alcohols, as well as waste products of aliphatic and aromatic alcohols.

In addition, the composition is prepared immediately before injection into the well, making it difficult to cook in the cold season in Siberia and the Far North.

The closest in technical essence and the achieved result is a composition for the production and transportation of oil (RU p is at, nonionic surfactant with 6-13 oxyethyl groups, ethoxylated alkyl ester of phosphoric acid or its potassium or ethanolamine salt, hydrocarbon solvent, in the following ratio, wt.%:

Sodium Las - 15-35

The nonionic surfactants with 6-13 oxyethyl groups 3-12

Ethoxylated alkyl ester of phosphoric acid or its potassium or ethanolamine salt - 1-4

Hydrocarbon solvent - 5-15

Sodium alkanesulfonyl - Rest

The composition contains a hydrocarbon solvent in contrast to the previous two analogues of the above (see patent N 2001090 and ed.St. N 1613471), therefore, more hydrofobicity bottomhole producing formations. As the hydrocarbon solvent composition contains kerosene, gasoline, white spirit, nefras, petroleum ether or other hydrocarbon solvents.

As the nonionic surfactant composition contains monoalkyl ethers of polyethylene glycol based on fatty alcohols fraction C10-C13or fraction C10-C20or mono - and dialkyl ethers of polyethylene glycol, or polietilenglikolya esters of monoethanolamide fatty acids faction the provisions, slows down gas without affecting the permeability of the zones of productive layers. However, the composition has a high viscosity, so when transporting active high-viscosity oils have high hydraulic resistance. When pumping into the well with a high temperature reservoir (100oC and above) composition as a result of thermal decomposition loses detergents and solvent ASPO properties. Furthermore, the preparation of known composition is difficult in the cold season (at zero temperature) because of the relatively rapid solidification.

The task of the invention is to reduce the viscosity of the composition to reduce the hydraulic resistance of the active high-viscosity oil in the transportation of their pipes, increasing thermal stability of the composition during oil extraction and the possibilities of preparation of compositions in the cold season (below the 0oC), which is very important in field conditions, for example in conditions of the North and Siberia, as well as increase the effectiveness of prevention education asphaltoresinparaffin deposits.

The problem is solved in that the composition for production and transportation of oil contains multicomponent mixture of synthetic Ani and hydrocarbon solvent and differs that it additionally contains an additive aliphatic or aromatic alcohol, or products containing them, in the following ratio, wt.%:

Multicomponent mixture of natural latex and synthetic, nonionic surfactants, polyoxyethylene alkylation phosphoric acid and a hydrocarbon solvent - 50-90

Aliphatic or aromatic alcohol, or products containing them - 10-50

The inventive composition is obtained by sequential introduction of ready multicomponent mixture of the above composition aliphatic or aromatic alcohol, or products containing them.

The quality of the finished multi-component mixture is used, the composition of the above composition, which is produced in, Chapayevsk, Samara region, CJSC "Himsintez" beyond 84-1051-85.

As nonionic surfactants multicomponent mixtures using monoalkyl ethers of polyethylene glycol based on fatty alcohols fraction C10-C13or fraction C10-C20or mono - and dialkyl ethers monoethanolamide fatty acid fraction C10-C16.

As the hydrocarbon solvent used kerosene, gasoline nefras, white spirit, Petra, ethyl, isopropyl, etc. and double alcohols (diols) - glycols: ethylene glycol, diethylene glycol, propylene glycol, polyglycols and others, as well as polyhydric alcohols such as glycerin, as well as products containing them, such as VAT residue from the production of butyl alcohol, waste glycols: anyspecial, polyglycols and other wastes containing glycols; waste - polyglycine, etc. and mixtures thereof.

As aromatic alcohols using phenol and the products it contains, for example phenolic resins - waste production of phenol and acetone, etc.

Unlike the prototype of the inventive composition further comprises an aliphatic or aromatic alcohol, or products containing them.

Studies have shown that the introduction of aliphatic or aromatic alcohol, or products containing them, in the inventive composition, the viscosity of the composition decreases by 3-5 times, this increases the stability of the proposed structure in high temperature environments.

However, with increasing temperature the favorable effect of monohydroxy alcohols decreases.

It is known that the lower monohydroxy alcohols have a boiling point below 100ooC. Therefore, in conditions of high formation temperatures (100oC) the role of polyhydric alcohols, because they have a high boiling point, which is at the lower diols 188-224oC, glycerin (Tirol) - 290oC. At higher temperatures it contributes to the stability of compositions containing polyhydric alcohols. An important property of alcohols, especially glycols, and glycerin is their ability to lower the freezing point, for example, with different content of ethylene glycol (EG) the freezing point of the solution decreases: 20% EG to -8,3oC; 30% EG -16oC; 40% EG to -26oC; 50% EG to -37oC; 60% EG -40oC; 66,7% EG up to -75oC and glycerin remains in liquid and -100oC.

Therefore, the claimed compositions containing glycols or glycerol, or products containing them, can be used for fishing in the cold season to prepare compositions. Application of organic antifreeze will allow to cook ice-free composition according to the claimed composition in conditions of freezing temperatures.

Application zamkovezka oils when transporting them through pipes, to improve thermal stability of the composition in the oil and allows the preparation of compositions in the cold season (below the 0oC), which is very important in field conditions, for example in conditions of the North and Siberia, as well as to increase the effectiveness of prevention education asphaltoresinparaffin deposits.

Example 1. The viscosity of the known and the claimed compositions determined on the viscometer of Hepler time dive ball (t, C) under the action of the applied load (P, g/cm2), which is calculated by the formula

M=kPt,

where k is a constant of the viscometer.

The preparation of the composition for inventive and well-known compositions carry out so.

Composition prototype ready to take multicomponent mixture produced according to TU 84-1051-85.

The claimed composition is prepared composition by sequential introduction of ready multicomponent mixture of the above composition aliphatic or aromatic alcohol, or products containing them.

As the aliphatic alcohol use methyl (MC), ethyl (ET), isopropyl (IPA) alcohols, VAT residue from the production of butyl alcohols OCBS), ethylene glycol (EG), diethylene glycol (Dry (PGL), as aromatic alcohols, phenol (f), as a waste material - phenolic resin (FS).

After thorough mixing determine the viscosity of the compositions on rebeccasommer of Hepler.

The results of measurements of the viscosity of the compositions of the formulations as claimed, and composition of the prototype and close analogues are given in table. 1.

The data table. 1 show that with the introduction of aliphatic or aromatic alcohol in known composition the viscosity of the composition is reduced in comparison with the known compound 3 - 5 times (cf synthesis 1 synthesis 2 - 20).

However, when the content of the declared alcohol content of less than 10 wt.% the viscosity of the composition is not very different from the viscosity of the composition of the prototype, so the lower limit of the alcohol content in the inventive composition is 10 wt.%.

The upper limit of the content of alcohol in the inventive composition is 50% by weight of due to the element of the adequacy of the achieved result, which is achieved by improving thermal stability of the composition during oil extraction and the possibilities of preparation of the composition in the cold season (up to - 40oC).

Thus, the introduction of aliphatic or aromatic, or products containing known in the composition sudipa was determined by keeping compositions at 70 and 100oC in a heating Cabinet for several days. After one day of exposure of the compositions were measured viscosity them on rebeccasommer of Hepler.

thermal stability of the compositions (TC) was estimated by the following formula:

< / BR>
where Vaboutand Vtthe viscosity of the compositions of the source (at 20oC) and after holding it at the required temperature for a certain period of time.

The higher thermal stability (TS), the higher thermal stability of the composition structure.

The results of the study thermal stability of the compositions after 3 days aging them at 70 and 100oC are given in table. 2, after 5 days at a temperature of 120oC - in table. 2A.

From the given data on thermal stability of the compositions of composition can be seen that the introduction of aliphatic or aromatic alcohols, or products containing them, dramatically increases thermal stability of the compositions from 28 to 92,6% at 70oC; from 2.5 to 88.8% at 100oC (see the syntheses of 1 and 3, 16 and 18).

Example 3. The possibility of preparation of the compositions according to the claimed composition at low temperatures (below 0oC) is determined by exposure of the compositions in a freezer at a temperature of - 18oC for 5 days. After each of stabilnosti compositions after 5 days of exposure their 18oC are given in table. 3.

Results data table. 3 shows the possibility of preparation of the compositions according to the claimed composition in conditions of freezing temperatures.

Composition the composition of prototype quickly freeze in contrast to the claimed compounds containing aliphatic or aromatic alcohol, or products containing (cf. S. 6 and S. 1-5 table.C).

Hydraulic resistance was determined on tube rheometer open type with two calibrated parallel tubes. When moving through the pipes active high viscosity oils containing aqueous solutions of the proposed structure and composition of the prototype oil containing aqueous solutions of the inventive composition, showed a lower hydraulic resistance compared with the composition of the prototype.

Survey data are presented in table.4.

The effectiveness of preventing the formation of deposits (asphaltoresinparaffin sediments) was determined by the number of deposits, which was postponed from the oil on the surface of a metal cylinder with a temperature below the crystallization temperature of the wax.

Effectiveness was determined by the formula

< / BR>
where Mothe weight of deposits from contem way the introduction of the aliphatic or aromatic alcohol, or products containing them, reduces the viscosity of the inventive composition, which is very important to reduce the hydraulic resistance of the active high-viscosity oil in the transportation of their pipes, increases thermal stability of the inventive composition in the oil and gives the opportunity to prepare compositions of the formulations in the cold season (below the 0oC), and increase the effectiveness of prevention education asphaltoresinparaffin deposits.

Technology of preparation of the compositions of the claimed composition simple.

In the ready the above multicomponent mixture in an amount of 50 to 90 wt.% add an aliphatic or aromatic alcohol, or products containing, in the amount of 10-50 wt. %, are thoroughly mixed and the claimed composition is ready to use.

It is possible to prepare the inventive composition in an industrial environment that will help to avoid difficulties when cooking it in the cold season in field conditions, especially in Siberia and the Far North.

The prepared composition into the formation as in finished form and in the form of its aqueous solutions of different concentration is the R and nonionic surfactants, ethoxylated alkylation phosphoric acid, a hydrocarbon solvent and an additive, wherein the additive composition contains an aliphatic alcohol or an aromatic alcohol or products containing them in the following ratio, wt.%:

Multicomponent mixture of synthetic anionic and nonionic surfactants, polyoxyethylene alkylation phosphoric acid and a hydrocarbon solvent - 50-90

Aliphatic alcohol or an aromatic alcohol or products containing them - 10-50

2. A method of obtaining a composition for production and transportation of oil-based multicomponent mixtures under item 1, characterized in that in a multicomponent mixture is injected aliphatic alcohol or an aromatic alcohol or products containing them.

 

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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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