SU1044625A1 - Method for treating aqueous flushing fluids - Google Patents

Abstract

A process for treating flushing fluids on a water-based base by introducing a lubricant additive, characterized in that, in order to extract the lubricants, anti-efficacy and bactericidal properties of industrial fluids, as a lubricant additive, they use the product of condensation of vat residues of the synthetic syrup of the sygro body of the syrf octane syrup as a lubricant additive. ethoxylated alkylphenols with a ratio of the specified components of 5: 1: 3 (reagent IKB-4), the consumption of the lubricant additive being 0.4 1, p wt.% of the volume of the washing liquid being treated awns.

Description

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The invention relates to the drilling of oil and gas wells, in particular, to drilling fluids in the field. basis

In order to improve the performance of the tsolot and the drilling rates, various lubricating fluids were introduced into the washing liquids. It is known to use as a lubricant additive oil sludge, which is a waste oil refining

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However, oil-based lubricant additives are not allowed to be used when drilling exploration wells, because they distort gas logging readings. In addition, these additives are highly polluted by the environment, and are flammable.

The closest to the present invention is a method for treating water-based washing liquids by introducing into them a residual product of production of 4,4-demitild 11 Oksan-1,3 (reagent T-66) in an amount of 0.8-1.2% of the volume of washing liquid D,

The disadvantages of this method are the relatively low lubricating and antiwear properties of the washing liquids, especially in mineralized media, their low anticorrosive and bactericidal properties.

The purpose of the invention is to increase the lubricating, antiwear and bactericidal properties of the flushing fluids.

The goal is achieved by the fact that according to the method of treating water-based washing liquids by introducing a lubricant additive, the condensation product of the bottoms of synthetic fatty acids of the C2p-C26 fraction with monoethanolamine and ethoxylated alkylphenols at a ratio of the above components 5: 1: 3 (IKB reagent) 4), and

the consumption of the lubricant additive is 0.41, 0% by weight of the volume of the washing liquid being processed. /

The IKB-4 reagent (TU-38-3019-72) is a corrosion inhibitor and is intended to protect the equipment of oil refineries and petrochemical plants, as well as is used in the processes of preparing and processing oil. IKB-4 is highly soluble in water, including mineralized, non-toxic, heat-resistant and salt-salt.

The treatment of the washing liquid corw according to the proposed method is carried out by direct introduction into the circulating system.

EXAMPLE Under laboratory conditions, various types of water-based washing fluids are treated. Three types of washing liquids are taken. Example 1 - fresh mud (composition,%: clay 20; carboxymethylcellulose 1.0; water - the rest). Example 2 - mineralized clay solution (composition,%: clay 20; carboxymethylcellulose 1.0; sodium chloride 10; water - the rest). Example 3 technical water.

These washing liquids are treated by the proposed method (reagent IKB-4) and for comparison by the prototype method (reagent T-66). Then, the technological parameters, lubricating, anti-wear, corrosion and bactericidal properties of the washing liquids, as well as static shear strength are measured. (SNC).

The results of the experiments are given in

tab. 1 and 2; and in the table. Table 1 lists the determinations 24 hours after the preparation of the washing liquid, and table. 2 - after 4- “single exposure.

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with As follows from the analysis table. 1, the present method of treatment of the washing liquid makes it considerably higher than its lubricating, antiwear, anticorrosive and bactericidal properties as compared with the prototype method. From the data (Table 2), it can be seen that after 4-41 curing in the washing liquids treated according to the prototype method, a large number of microorganisms propagate, for which many organic and polymeric chemical reagents (CMC, QSCB, starch, polyacrylamide, petroleum, Smad, SG, sludge, etc.) are nutrient media. This leads to the biological destruction of these reagents, resulting in deterioration of the parameters of the washing liquid: viscosity and water efficiency are enhanced, lubricating and antiwear properties deteriorate, and the amount of microorganisms is almost not observed; stability of their technological properties in time. Therefore, the use of the proposed method of processing in practice will save a significant amount of expensive AIA chemical. reagents and increase drilling performance. The lubricating and anti-wear properties of flushing fluids are estimated using a Timken instrument (American firm Baroitz), in which the coefficient of friction is proportional to 1 current: the lower the current (friction coefficient), the better the lubricating properties of the flushing liquid. Evaluation of anti-wear properties is made by the size of the wear spot formed on the edge of the steel prism as a result of its contact with the rotating ring. The wear area is determined with a microscope having an ocular with a dividing ruler. The anticorrosive ability of the compositions is determined according to the method set forth in Specifications 38-101460-74 by comparing the weight of control plates made of steel to drill pipes after their contact with the compositions of washing liquids treated according to the proposed method and prototype method. The contact time in all experiments was 72 h, the speed of stirring was 400 rpm, the temperature of the medium was 22 C. The bactericidal effect of the indicated washing liquids was estimated by the number of microorganisms in the samples of these compositions, which were cut on an agar medium, after 24 h and 4 weeks of incubation in a thermostat at 30 ° C. Thus, the main advantages of the proposed method for treating industrial fluids are to provide high lubricating, anti-wear and bactericidal properties of industrial fluids that remain stable for a long time. itelnogo period. The economic effect from the introduction of the proposed method is due to a decrease in the consumption of chemical reagents in its implementation, an increase in technical and economic indicators of drilling as a result of an improvement in the lubricating properties of a liquid, an increase in the durability of a porous destructive tool, etc., and will amount to 37.11 rubles per 1 m of industrial fluid or 189.1 thousand rubles. 1 deep exploration well (depth over 50OO m).

Claims (1)

! METHOD FOR TREATING WASHING FLUIDS ON A WATER BASIS by introducing a lubricant additive, characterized in that, in order to increase the lubricant, anti-erosion and bactericidal properties of the washing liquids, the condensation product of bottoms of synthetic fatty acids of the fraction C ^ o * ^ 26 ^{s is} used as a lubricant additive monoethanolamine and hydroxyethylated alkyl phenols at a ratio of these components of 5: 1: 3 (reagent IKB-4), and the consumption of the lubricant additive is 0.4-1.0 wt.% of the volume of the treated wash fluid. S