SU1451157A1 - Emulsion-like flushing fluid - Google Patents

Abstract

The invention relates to the drilling of wells. The goal is to increase anti-friction properties and stability in hard waters. The liquid contains the following ingredients in their ratio, research institutes, wt.%: A mixture of tars 1.0-2.0; dispersant based on sodium salts dinaphthylmethylene and dinaphthylmethylenedisulfonic acid 0.05-0.4, humate reagent 1.0-3.0, water the rest. The bastard is prepared by pouring an aqueous solution of the dispersant into the tar mixture and vigorously stirring for 5-10 minutes using an agitator until the mixture is obtained. Then the water and the humate reactant are added to the latter and mixed for 5 minutes; The use of fluid during drilling can increase the rate of drilling, increase the stability of the emulsion, and reduce reagent consumption. 2 tab. and s

Description

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The invention relates to the drilling of wells, in particular to emulsion liquids, used for flushing wells with solid minerals.

The purpose of the invention is to increase the antifriction properties and stability in hard waters.

The emulsion wash liquid contains a mixture of tars, a dispersant based on a mixture of sodium salts dinaphthylmethylene and dinaphthylmethylene desulfonic acid (dispersant NF), the additive and water, and as an additive use a humate reagent in the following ratio of ingredients, wt.%:

The mixture of tars 1,0-2,0 Dispersant

based on a mixture of sodium salts of dinaphthylmethylene and dinaphthylmethylene disulfonic acid 0.05-0.4 Humate reagent 1.0-3.0 Water Remaining

An emulsion wash fluid is prepared as follows.

Pour an aqueous solution of NF dispersant into the tars mixture and vigorously mix for 5-10 min with a stirrer (400 rpm) until a homogeneous mixture is obtained, after which the necessary amount of water and humate is added, followed by stirring for 5 min.

Examples of the preparation of specific solutions in the range of boundary and average values of ingredients.

Example 1.1 A mixture of tars is vigorously mixed with a 0.05% aqueous solution of NF dispersant (5%) until a homogeneous mixture is obtained, then 1% of a humate reagent and 100% water are added, stirring until the humate reagent is completely dissolved. .

Example 2. 1.5% of a mixture of goudronov. Are vigorously mixed with a 0.22% aqueous solution of dispersant NF (12%) until a homogeneous mixture is obtained, then 2% of a humate reagent and 100% of water are added, stirring until complete dissolving the humate reagent.

Example 3.2% of tars mixture is vigorously mixed with 0.04% of a 20% aqueous solution of dispersant NP (20%) until a homogeneous mixture is obtained, then 3% of humate reagent and water are added to 100%, stirring until complete dissolution of humate reagent .

The mixture of tars is a thick oily liquid - the product of oil and fat production, of the following composition, wt.%:

Mixture of fatty

acids C, 4. Cjo

C, g, 2.Not less than 52

Unwashed

substances4-11

Oxidized fatty

acids 12-20

Physical and chemical properties of the mixture of tars are as follows:

Density

at 50 C, g / cm 0.94-0.96

Viscosity

at 50 ° C, cSt 15-40

Acidic

number,

mgKON / g50 -55

Molecular

weight305-310

Temperature

page, from 250-285

NF disperser is a mixture of sodium salts of dinaphthylethylene sulfonate and dinaphthylmethylenedisulfonic acid.

As the humate reagent, for example, UShR, PUSCHR, modified humate reagent (MHR) is used.

The presence of a humate reagent in an emulsion liquid makes it possible to stabilize the smallest droplets of a dispersed mixture of tars and prevent their coalescence and subsequent separation. .

The emulsion has the same performance when using any of these humatex reagents.

In order to determine the optimal ratio of the content of a mixture of tar and dispersant NP, several formulations were prepared, the characteristics of which are given in Table. 1. I.

According to the described technology, several compositions of the emulsion washing liquid were prepared, which were compared with the known washing liquid.

liquid, and the results are presented in table. 2

The antifriction properties of the emulsion flushing fluid were determined by the M-22 friction machine according to the standard technique for friction of steel on granite.

Stability in hard waters was determined by the maximum value of calcium chloride waters, at which the emulsion did not exfoliate during 2 hours of rest.

The surface tension was determined by the stamometric method.

As can be seen from the data given in table. 2, compared with the known anti-friction properties of the proposed emulsion washing liquid, is increased 1.6 times, the stability in hard waters is 2.4 times.

When the content of a mixture of tar, dispersant NP and humate reagent

floats and emulsio liquid is not acceptable wells. Without the use of a NF dispersant after the introduction of a humate-resistant emulsion, it is not that the tar mixture is suited.

1Q When drilling a well, minerals in their category by drilling for flushing fluid will increase mechanical 5 by 15–20%, increase emulsions and reduce comrade.

Claims (1)

Formula iso 20 An emulsion wash containing a mixture of rods. the sodium-based methylmethyl- and dinafti phonic acid torus, additive and less than the lower limit does not provide 25. thirty improving the properties of the emulsion. Increasing the content of these components in the emulsion above the upper limit does not lead to further improvement of the properties of the emulsion. Mixing a mixture of tars with a 5-20% aqueous solution of the dispersant NP is necessary to disperse the mixture of tars to such an extent that this mixture is subsequently stabilized with a humate of reagents. Mixing a mixture of tars with an aqueous solution of the dispersant NP at a concentration of less than 5% or more than 20% does not give a stable emulsion, resulting in a mixture of tars 40 increase anti-friction stability in the hard quality of the additive soda reagent with the following ingredients, wt.%: Mixture of tar Dispersant based sodium salts dinaphthylmethyl- and dinaphthylmethylenedisulphonic acid 0 Humat reagent Water 3% aqueous solution dispersant nf Mixture of tar 5% aqueous solution dispelgator nf Mixture of tar an emulsion rinse fluid emerges and is not acceptable for flushing wells. Without the use of an aqueous solution of the NF dispersant or its introduction after the introduction of a humate reagent, a stable emulsion is not obtained, because the mixture of tars quickly splits. When drilling wells for solid minerals in the Y11-KhG1 rocks of their drillability category, the emulsion wash fluid allows increasing the mechanical drilling speed by 15-20%, increasing the durability of the emulsion and reducing the consumption of reagents. Invention Formula An emulsion wash liquid containing a mixture of tars, a dispersant based on sodium salts of dinaphthylmethyl- and dinaphthylmethylenedisulphonic acid, an additive and water, so tangible. 25 of this. 0 what with the purpose 0 increase anti-friction properties and stability in hard waters, it contains as an additive humate reagent in the following ratio of ingredients, wt.%: The mixture of tars 1,0-2,0 Dispersant based sodium salts dinaphthylmethyl- and dinaphthylmethylenediamine 0.05-0.4 Humat reagent1.0-3.0 WaterEverything Table 1 Exfoliated Stable 10% aqueous solution dispersant nf Mixture of tar 15% aqueous solution dispersant nf Mixture of tar 20% aqueous solution dispersant nf Mixture of tar 25% aqueous solution dispersant nf Mixture of tar Mixture of tar Triethanolamine Dispersant NF Water Mixture of tar Triethanolamine Dispersant NF Water Mixture of tar Dispersant NF GAME Water Mixture of tar Continued tpbl.1 Stable Stable Stable Exfoliated table 2 0.10 90 40 0.08 150 34 0.07 310 40 Co ns Component Content, Mac.Z gator nf tars gator nf tars gator nf tars gator nf 0.15 2.00 Up to 100 2.00 0.40 3.00 Up to 100 0.80 0.08 0.80 Up to 100 2.50 0.25 3.50 Up to 100 Continuation of table 2 Indicators The stability of the emulsion when the hardness of water mEq / l Surface tension mN / m 0.06 340 37 0.05 360 35 0.11 270 42 0.05 370 34