SU940818A1 - Unit for preparing drilling mud - Google Patents

Abstract

A device for preparation of the drilling mud comprises a feed hopper (2) with nozzles (7) connected to a source of the dilution liquid which is, in its turn, connected to a chamber (1) of an ejector mixer. A tube provided with an ejector nozzle and connected with a pump (11) is mounted inside the chamber (1) of the ejector mixer. The device comprises as well a diaphragm electrolyzer (13) located inside the dilution liquid supply main, the chamber (17) of the negative electrode (15) of which is connected with the nozzles (7) of the feed hopper (2) and with the tube of the ejector mixer.

Description

The pipe 2 has on the outer surface a helical blade 7 and a rotation drive 8. The outermost turns of the loop 7 are attached to the nozzle 2, and the middle 9 due to the gaps 10 can move along this (the nozzle. The unit is equipped with a diaphragm electrolyzer And, the cathode chamber 12 of which is connected to the nozzles 5 of the funnel 3. outlet pipe 14.

The installation works as follows.

Through the nozzles 5, water is pumped into the funnel 3 under pressure, treated in the chamber 12 of the electrolysis cell 11. At the same time, a powder is poured through the grate 4 into this funnel. Due to the chaotic movement of water, the powder is wetted and pre-mixed with the liquid. This is facilitated by the presence of hydroxyl groups in electrotreated water, which increase the hydrophilic properties of the powder and actively interact with the surface of the particles, resulting in the aggregation of particles rapidly dissolving. When the nozzle 2 is rotated, a mixture of powder and liquid is uniformly fed into the mixing zone. At the same time, water or outgoing suspension is supplied from the pump 13 to this nozzle under pressure. In the mixer 1, the liquid is mixed with the mixture coming from the funnel 3. The finished solution through the nozzle 14 enters the tanks of the circulation system (not shown).

Due to the fact that the funnel 3 is constantly under the bay, the ingress of atmospheric air into the mixing zone is excluded. Making medium turns of the helical blade with the possibility of axial displacement eliminates the compaction of the material when it is fed into the mixing zone, as the pitch between the turns changes.

Thus, the proposed plant allows improving the quality of solution preparation by pre-mixing the powder with electro-recirculated water, uniformly supplying it to the mixing zone and eliminating the ingress of air into the solution, and improve the reliability of the installation.

The economic efficiency of using the installation is ensured by improving the quality of the solution; reducing the time of solution preparation by 10% and equipment for the subsequent treatment of the solution; reducing reagents

for chemical treatment of the solution at 7-8 "/ o.

Claims (2)

1. Installation for drilling mud tinting, containing an ejector mixer with a supply pipe and a feed hopper with nozzles installed above it, characterized in that In order to increase the efficiency of the process and the quality of the finished product, it is equipped with a diaphragm electrolyzer, the cathode chamber of which is connected to the nozzles of the feed hopper, and the feed inlet of the mixer is rotatably mounted. 2. Installation under item 1, characterized in that the inlet pipe is equipped with a screw blade installed on its outer surface, the middle turns of which are placed freely. Sources of information taken into account in the examination: 1. Drilling engineer handbook. M., "Nedra, 1973, p. 367. 2. US patent number 3867195, cl. At 01 F 1/00, 02/18/75 (prototype). ff f Z 3 + o