Rosneftegazinstrument
USO-20R1 The mixing-averaging unit
The mixing-averaging unit (USO-20, 1USO-20 plants are the equivalents of this plant) is designed for preparing drilling and cementing slurries and other process fluids for drill-hole drilling and repairing.
TS 3666-008-79560377-2009
Slurry preparation is carried out by direct flow method and recirculation method with all design volume accumulation. The unit can increase grouting slurries weight and provide the homogeneity throughout the volume. The unit is equipped with mixing devices of two types: hydraulic pressure and hydro-pneumatic.
Technical specifications
| Parameter name | USO-20R1-01 |
| Tank volume, m3 | 20 (2х10) |
| Accumulating slurry density up to, g/cm3 | 2,5 |
| Allowable fluctuation in slurry density, g/cm3 | 0,01 |
| Maximum feed of the original cementing slurry to the plant, сm3/s | 50 |
| Mixer specifications: | |
| - Functional principle; | Mechanical |
| - Type; | two-shaft auger-drill |
| - Rotation rate min, rpm | 20-25 |
| Nominal diameters of pipeline flow area, mm: | |
| - receiving | 100 |
| - outlet collectors | 100 |
| - hydraulic feeder | 50 |
| Unit dimension, mm, max. | |
| - Length | 9300 |
| - Width | 2500 |
| - Height | 3750 |
| Hydraulic pressure mixer performance, dm3/s | 25 |
| Chassis: | KAMAZ 43118-3027-50 |
| - Cargo Trip tank, tonnes | 12 |
| - Wheel arrangement | 6х6 |
| - Engine EURO-5 | 740.735-400 (Е-5) |
| - Maximum Trip tank, kW (l.c) | 220 (300) |
| - Gear box | 154 |
| - Tires | КАМА 425/85-R21 Single-slope busbar |
| - Power take-off device | MP24-4208010-60 |
| - Spare Wheel Bracket | On rear overhang |
USO-20R1 The mixing-averaging unit-01 consist of:
| 1 | Chassis KAMAZ 43118 | 12 | slurry level indicator |
| 2 | Trip tank (2 compartments) | 13 | Sampler |
| 3 | Reducer | 14 | Unloading pup joint (DN 4″) |
| 4 | Chain-drive for stirrer | 15 | Jacks |
| 5 | Transition platform | 16 | Interior space lights of the container |
| 6 | Ladder | 17 | Steam supply fitting pipe |
| 7 | Servicing platform | 18 | Hydro-pressure mixer |
| 8 | Loading pipeline | 19 | Reducer drive chain |
| 9 | Baskets | 20 | Tool box |
| 10 | Stirrers | 21 | LED light of the sampler |
| 11 | Hydraulic feeder (DN 2”) | ||
| 12 | slurry level indicator | ||
| 13 | Sampler | ||
| 14 | Unloading pup joint (DN 4″) | ||
| 15 | Jacks | ||
| 16 | Interior space lights of the container | ||
| 17 | Steam supply fitting pipe | ||
| 18 | Hydro-pressure mixer | ||
| 19 | Reducer drive chain | ||
| 20 | Tool box | ||
| 21 | LED light of the sampler |
Technical specifications
| Parameter name | USO-20R1-02 |
| Tank volume, m3 | 20 |
| Accumulating slurry density up to, g/cm3 | 2,5 |
| Allowable fluctuation in slurry density, g/cm3 | 0,01 |
| Maximum feed of the original cementing slurry to the plant, сm3/s | 50 |
| Mixer specifications: | |
| - Functional principle; | Mechanical |
| - Type; | two-shaft auger-drill |
| - Rotation rate min, rpm | 20-25 |
| Unit dimension, mm, max. | |
| - Length | 8600 |
| - Width | 2500 |
| - Height | 3700 |
| Hydraulic pressure mixer performance, dm3/s | 25 |
| Chassis: | KAMAZ 43118-3027-50 |
| - Cargo Trip tank, tonnes | 12 |
| - Wheel arrangement | 6х6 |
| - Engine EURO-5 | 740.735-400 (Е-5) |
| - Maximum Trip tank, kW (l.c) | 220 (300) |
| - Gear box | 154 |
| - Tires | КАМА 425/85-R21 Single-slope busbar |
| - Power take-off device | MP24-4208010-60 |
| - Spare Wheel Bracket | On rear overhang |
USO-20R1 The mixing-averaging unit-02 consist of:
| 1 | Chassis KAMAZ 43118 | 10 | Stirrers |
| 2 | Bulk storage tank | 11 | hydraulic feeder |
| 3 | Reducer | 12 | slurry level indicator |
| 4 | Chain gearing | 13 | Sampler |
| 5 | Transition platform | 14 | Unloading pup joint |
| 6 | Ladder | 15 | Jacks |
| 7 | Servicing platform | 16 | Interior space lights of the container |
| 8 | Loading pipeline | 17 | Steam supply fitting pipe |
| 9 | Baskets | 18 | Hydro-pressure mixer |
| 10 | Stirrers | ||
| 11 | hydraulic feeder | ||
| 12 | slurry level indicator | ||
| 13 | Sampler | ||
| 14 | Unloading pup joint | ||
| 15 | Jacks | ||
| 16 | Interior space lights of the container | ||
| 17 | Steam supply fitting pipe | ||
| 18 | Hydro-pressure mixer |
The mixing-averaging unit is designed for jet mixing of cement slurry in a container by mixing it with a belt screw, as well as recirculating it with a centrifugal pump. The unit provides the possibility of averaging and simultaneous delivery of cement slurry by centrifugal pumps to the pumping unit for subsequent injection into the well. The unit allows simultaneous delivery of the slurry from one container and preparation of the slurry in another.
The product is designed to work in temperate and cold climates according to GOST 15150-69, climatic version of NF at ambient temperatures from minus 50 to +40 °C, storage up to minus 69 °C. The container consists of two compartments in the lower part is made in the form of a semicircle, with a technological bias. The total Trip tank is 20 m3. The Trip tank of one compartment is 10 m3. Augers for mixing slurrys are installed in the tank compartments. The heating system provides the possibility of additional heating from the mobile steam heater or steam line of the drilling rig.
The bulk storage tank provides level gauges for each compartment of the tank, the tank is also equipped with a ladder for lifting service personnel to the work site, technological hatches for servicing components and mechanisms in the tank, two outlet collectors for taking cementing slurry from the compartments of the tank and draining water after washing it.
The service platform is installed behind the chassis cab in front of the tank. A hydraulic mixer (ejector mixer) is installed on the site.
This unit is equipped with two centrifugal pumps NC-100R1 (4"X5") with a Trip tank of up to 3.5 m3/min each with a hydraulic drive (hydraulic motors).
The unit is painted with polyurethane-based paints.
All components to be painted are stripped to pure metal in accordance with the specifications before being primed.
Technical specifications
| Parameter name | USO-20R1-12 |
| Tank volume, m3 | 20 (2х10) |
| Accumulating slurry density up to, g/cm3 | 2,2 |
| Top performance, m3/min, min | 3,5 |
| Tilt angle of the tank, deg., min | 0,5 |
| Nominal diameters of pipeline flow area, mm: | |
| - receiving | 100 |
| - washover | 50 |
| - recirculating | 100 |
| - intaking | 125 |
| Internal coating of the tank | Epoxy primer |
| Mixer specifications: | |
| - Functional principle; | Mechanical |
| - Type; | two-shaft auger-drill |
| - Rotation rate min, rpm | 20-25 |
| Centrifugal pump rate speed, rpm | 1900-2400 |
| Parameter name | USO-20R1-12 |
| Unit dimension, mm, max. | |
| - Length | 9100 |
| - Width | 2500 |
| - Height | 3650 |
| Centrifugal pumps: | |
| Brand | NC-100R1 |
| Maximum feed at speed 2400 rpm, l/s | 58 |
| Maximum pressure at speed 2400 rpm, kg/cm2 | 3,7 |
| Maximum power consumption, kW (HP) | 55 (75) |
| Parameter name | USO-20R1-12 |
| Chassis KAMAZ 43118-3027-50 (Euro 5): | |
| - engine, brand | KAMAZ 740.735-400(Е-5) |
| - power, hp | 300 |
| - Wheel arrangement | 6х6 |
| - Gear box | 154 |
| - Cargo Trip tank, tonnes | 12,7 |
| - fuel tanks, l | 310+250 |
USO-20R1 The mixing-averaging unit-12 consist of:
| 1 | Chassis KAMAZ 43118 | 14 | Discharge pop joint (DN 125 mm) |
| 2 | Bulk storage tank | 15 | Mechanical jacks |
| 3 | Reducer | 16 | Spotlights |
| 4 | Chain gearing | 17 | Hydraulics heat exchanger |
| 5 | Transition platform | 18 | Steam supply fitting pipe |
| 6 | Ladder | 19 | Recirculation line sampling cranes |
| 7 | Servicing platform | 21 | Power take-off box from the chassis transfer case |
| 8 | Loading pipeline (DN 100mm) | 23 | Hydraulic pumps |
| 9 | Baskets | 24 | Hydraulic motors |
| 10 | Stirrers | 25 | Centrifugal pumps |
| 11 | Recirculation pipeline (DN 100 mm) | 26 | Oil tank |
| 12 | slurry level indicator (2 pcs.) | 27 | Hydraulic pumps drive power take-off box |
| 13 | Sampler | ||
| 14 | Discharge pop joint (DN 125 mm) | ||
| 15 | Mechanical jacks | ||
| 16 | Spotlights | ||
| 17 | Hydraulics heat exchanger | ||
| 18 | Steam supply fitting pipe | ||
| 19 | Recirculation line sampling cranes | ||
| 21 | Power take-off box from the chassis transfer case | ||
| 23 | Hydraulic pumps | ||
| 24 | Hydraulic motors | ||
| 25 | Centrifugal pumps | ||
| 26 | Oil tank | ||
| 27 | Hydraulic pumps drive power take-off box |
Technical specifications
| Parameter name | USO-20R1-20 |
| Tank volume, m3 | 20 |
| Accumulating slurry density up to, g/cm3 | 2,5 |
| Allowable fluctuation in slurry density, g/cm3 | 0,01 |
| Maximum feed of the original cementing slurry to the plant, dm3/s | 50 |
| Tilt angle of the tank, deg., min | 0,5 |
| Mixer specifications: | |
| - Functional principle; | Mechanical |
| - Type; | two-shaft auger-drill |
| - Rotation rate min, rpm | 20-25 |
| Hydraulic pressure mixer performance, dm3/s | 25 |
| Centrifugal pump rate speed, rpm | 1900-2400* |
| Maximum feed at speed 2400 rpm, l/s | 58 |
| Maximum pressure at speed 2400 rpm, kg/cm2(атм) | 3,7 |
| Chassis: | KAMAZ 43118-3027-50 |
| - Cargo Trip tank, tonnes | 12 |
| - Wheel arrangement | 6х6 |
| - Engine EURO-5 | KAMAZ 740.705-300 |
| - maximum power, kW (HP) | 221 (300) |
| - Gear box | 154 |
The stirrers are driven from the power take-off box installed on the transfer case of the car, through the driveshaft, gearbox and chain transmission. The speed rate of the stirrers is regulated by changing the engine speed and shifting gears in the gearbox.
The centrifugal pump has a hydraulic drive, from the power take-off box installed on the right side of the chassis gearbox, has an independent activation from the stirrer drive, the rotation speed is regulated by changing the engine speed.
USO-20R1 The mixing-averaging unit-20 consist of:
| 1 | Chassis KAMAZ 43118 | 14 | Discharge pup joint |
| 2 | Bulk storage tank | 15 | Jacks |
| 3 | Reducer | 16 | Interior space lights of the container |
| 4 | Chain gearing | 17 | Steam supply fitting pipe |
| 5 | Transition platform | 18 | Hydro-pressure mixer |
| 6 | Ladder | 19 | The recirculation pipeline |
| 7 | Servicing platform | 20 | Pump flow connection to an external source |
| 8 | Loading pipeline | 21 | Suction pipe |
| 9 | Baskets | 22 | Hydraulic pump |
| 10 | Stirrers | 23 | Hydraulic motor |
| 11 | hydraulic feeder | 24 | Centrifugal pump NC-100R1 |
| 12 | slurry level indicator | 25 | Hydraulic tank |
| 13 | Sampler | 26 | Heat exchanger |
| 14 | Discharge pup joint | ||
| 15 | Jacks | ||
| 16 | Interior space lights of the container | ||
| 17 | Steam supply fitting pipe | ||
| 18 | Hydro-pressure mixer | ||
| 19 | The recirculation pipeline | ||
| 20 | Pump flow connection to an external source | ||
| 21 | Suction pipe | ||
| 22 | Hydraulic pump | ||
| 23 | Hydraulic motor | ||
| 24 | Centrifugal pump NC-100R1 | ||
| 25 | Hydraulic tank | ||
| 26 | Heat exchanger |
| Parameter name | Value |
| Erection base | Chassis URAL 4320-40 or КАМАZ-43118 |
| Plant tank volume, m3 | 15-20 |
| Maximum density of the prepared slurry (fractional method), kg/m³ | 2500 |
| Stirrer type | belt type, screw type, twin-shaft, fore-bladed |
| Stirrer shaft rotation rate, rot./min. | 20-25 |