SU908784A1 - Emulsion drilling mud - Google Patents

Description

(54) EMULSION BOUJEVA SOLUTION

I

The invention relates to the drilling of wells; to solid minerals, in particular to drilling fluids used to flush these wells.

Known emulsion drilling fluid prepared from the product of wood chemical prokapilnosti - emulsol brand EL-3 1J.

However, such a solution can be used only in the conditions of fresh and slightly hard waters flowing into the well.

Also known aqueous emulsion drilling fluid containing 1-2 wt.% Saponified caustic soda mixture of tar 2.

However, the known drilling fluid does not have a high lubricant capacity, especially at a pH of 9.5. In addition, the solution stratifies when mineralized groundwater enters the well.

The purpose of the invention is to improve the quality of the solution by increasing its lubricating properties and salt resistance.

To achieve this, the emulsion drilling fluid was additionally supplied with an NF dispersant (a mixture of sodium salts of dinaphthylmethylene sulfonic acids and dinaphthylmethylenedisulfonic acid), and triethanolam 1x was used as a washing reagent, the ratio of ingredients being as follows, wt.%:

A mixture of tars1-2

Trizanolamine 0.1 - 0.5

NF dispersant (a mixture of sodium salts of dinaphthylmethylene sulphoxylslot and dinaphthylmethylenedisulfonic 10 lot) 0.05-0.15

Water Rest

The emulsion drilling fluid is prepared as follows.

15

Triethanolamine is added to a mixture of tars heated to 70-80 ° C and stirred for 1 hour using a stirrer (400 rpm), after which water heated to a temperature of 50-60 ° C and dispersant NF are added. Received

20 Mix the mixture for 30 minutes, total stirring time 1.5 h.

In tab. Figure 1 shows the compositions of the emulsion drilling mud to be refined. The antifriction properties of the emulsion drilling muds proposed in the prior art are determined by the M-22 friction machine according to the generally accepted method for the friction of steel against granite. Salinity of solutions is determined by the maximum amount of hardness of sodium chloride. Known with the concentration of saponified NaOH mixture of tars.

one%

P

T fi l and n I

table 2

6 10

55 48 ev water, but no separation of the solution occurs. The surface tension is determined by the stalagmometric method. The data obtained are presented in Table. 2

Claims (1)

Claim VNIIIPI Order 747/27 An emulsion drilling fluid containing a saponification reagent, a mixture of tars and water, ® characterized in that, in order to improve the quality of the solution by increasing its lubricating properties and salt resistance, it additionally contains a dispersant NF (a mixture of sodium salts of dinaphthylmethylene sulfonic acids and dinaphthylmethylene disulfonic acid), a the saponification reagent is triethanolamine, and the ratio of ingredients wt.%: A mixture of tar Triethanolamine Dispersant NF (a mixture of sodium salts of dinaphthylmethylene disulfonic acid and dinaphthylmethylene disulfonic acid) Water is as follows, 12 0.1 - 0.5 0.05 - 0.15 Else