GEO-4KM (Downhole Combined Remote Tool)

GEO-4KM (Downhole Combined Remote Tool)

Downhole Combined Remote Tool GEO-4K (hereinafter, the tool) lowers into the well on a geophysical cable. The tool registers the following parameters: pressure P, temperature T, gamma-rays GR, continuous bore spinner (top or bottom) CBS, full bore spinner FBS, capacitance water holdup CWH, induction resistivity RES, casing collar locator CCL, stream thermal indication STI.

As ground-based loggers are used geophysical panels of type "Vector" (production of LLC “PKF GEOTEKH"), "SPEKTR", "Gektor", "Vulkan", "Geofit", "CarSAR" "MEGA-MAX", "Kedr-02", etc.

The flow-meter channel design may vary depending on the tasks. Versions of the flow-meters are the same as the GEO-6 tools. You can connect the reversible flow-meter, that determines the direction of fluid flow, and the second inline flow-meter.

Solvable tasks:

  • Study of operating characteristics of the well:
    • definition of radiating and absorbing intervals;
    • the definition of the inflow profile and acceptance;
    • the definition of a temperature mode;
    • definition of watering intervals;
    • definition of intervals of casing leaks, tubing and annular space.
  • Control over the operation of technical equipment:
    • determination of the depth of installation of the equipment;
    • determination of liquid level;
    • determination of tubing and packers.
  • The study of the hydrodynamic characteristics of the wells:
    • determination of productivity index;
    • determination of hydraulic and gas conductivity.

It is possible to manufacture the device with any combination of channels and with shorten length (a combined probe with the flow-meter). 

Parameter Value
The number of logging channels 8
The cycle time of one measurement, sec 0.25
Power supply (voltage stabilizer) from +12V to +30V (depending on the length of the cable)
Current consumption, mA 100/250 (with STI)
Pressure channel (P)
Measuring range, kgf/sq.cm 0...600, 0...800
The number of ADC bits 16
The relative error, % +/-0.15
Absolute error, kgf/sq.cm 0.6
Pressure resolution, % 0.0015
Pressure resolution,* kgf/sq.cm 0.006
* for range 0-400 kgf/sq.cm  
Temperature channel (T)
Measuring range, °C 0...+100, 0...+120, 0...+150
The number of ADC bits 16
Absolute error, °C 0.5
Temperature resolution, °C 0.003
Time constant, sec 1.5
Gamma-rays channel (GR)
Measuring range, microR/hour 0...50
Sensitivity, imp/min on 1 microR/hour, not less than 150
Flow-meter channel (CBS, FBS)
Measuring range common,* m3/day  
Расходомер диаметром 30мм, турбинка полиамидная диаметром 20мм, диапазон куб.м/час 3-250
Расходомер диаметром 38мм, турбинка полиамидная диаметром 27мм, диапазон куб.м/час 2-200
Расходомер проходной диаметром 38мм, турбинка полиамидная диаметром 27мм, диапазон куб.м/час 2-200
Расходомер складывающийся диаметром 38/110мм (сложенный/раскрытый), турбинка резиновая диаметром 60мм, диапазон куб.м/час 0.5-50
Casing Collar Locator channel (CCL)
Signal/noise ratio, not less than 5
Thermal Indication channel (STI)
Overheating sensor in still water, °C, not less than 5
Time constant, sec 3
Current consumption, mA 150
Resistivity meter channel  (RES)
Conductivity measuring range, Sm/m 1...50
Absolute error, Sm/m, not more than 1
Thermal care zero, Sm/m, not more than 0.1
Capacitance water holdup channel (CWH)
Measuring range, % 0...60
Size
Length, mm 1600
Diameter, mm 28/30/36/38
Weight, kg, not more than 10
Model Diame­ter, mm Pres­sure, MPa Tempe­rature, °C Description
GEO-4K1-38 MPa/°C3860, 80100, 120, 150Channels: T,P,GR,CCL,STI,CWH, RES, CBS, FBS
GEO-4KM-30 MPa/°C3060, 80100, 120, 150Channels: T,P,GR,CCL,STI,CWH, RES, CBS
GEO-4KM-32 MPa/°C3260, 80100, 120, 150Channels: T,P,GR,CCL,STI,CWH, RES, CBS
GEO-4KM-38 MPa/°C3860, 80100, 120, 150Channels: T,P,GR,CCL,STI,CWH, RES, CBS, FBS
GEO-4KM-42 MPa/°C4260, 80100, 120, 150Channels: T,P,GR,CCL,STI,CWH, RES, CBS, FBS