UEOS-4
Jet Pump for Hydrodynamic and Production Logging Survey (UEOS-4) is designed for stimulation of oil production, clean out of the near well-bore zone of the reservoir, for the pressure build-up and PLT surveys.
Pump’s design allows performing the following operations:
- Restoration of the near well-bore zone to the initial condition by alternated drawdown.
- Hydrodynamic tests for skin-effect assessment, downhole pressure and deterioration of reservoir permeability.
- Production Logging Survey.
- Acidizing.
The product should be operated in the wells with body having an inside diameter not less than 122 mm (4,8 inches).
The depth of the Pump’s descent is up to 4000m (13123 ft).
The Pump consists of the body with the installed hard-alloy nozzle, the mixing chamber and the sealings: encapsulated assembly, drawdown inset, pressure test inset, blocking insertion piece, BUS inset and necessary auxiliary tools with replacement parts.
Technical data and description
|
Working fluid maximum pressure in front of equipment’s nozzle, mPa (kgf/cm2) |
30 (300) |
|
Maximum ambient temperature, oC |
120 |
|
Environment |
Oil, gas, stratal water |
|
Working fluid |
Process water, brine |
|
Nozzle inner diameter, mm |
No more than 6 |
|
Mixer inner diameter, mm |
No more than 10 |
|
Central passage channel diameter, mm |
Not less than 51 |
|
Nipple’s and muff’s connecting thread according to GOST 633-80 |
73 |
|
Overall dimensions, mm: |
|
|
Length |
No more than 118 |
|
Height |
No more than 700 |
|
Mass (without package), kg |
No more than 50 |
|
Cargo package overall dimensions, mm: |
|
|
Length |
No more than 800 |
|
Width |
No more than 400 |
|
Height |
No more than 300 |
|
Cargo package mass, kg |
No more than 70 |
|
Maximum depression on stratum |
P (stratum pressure) |
|
Mean time to failure, hour |
Not less than 300 |
|
Mean recovery time, hour |
No more than 5 |
|
Assigned resource, hour |
Not less than 800 |
Comment:
- Equipment’s failure criterion is nozzle, mixer and sealing collar failure leading to the ejection coefficient fall below 0, 15.
- Equipment’s limiting state is body failure through the wear of connecting threads or inner bore diameters.
