GEO-MCW (Multi-probe Self-contained Capacitance Water Hold-up)

GEO-MCW (Multi-probe Self-contained Capacitance Water Hold-up)

Self-contained multi-probe capacitance water hold-up GEO-MCW

Purpose.

Self-contained multi-probe digital capacitance water hold-up is designed to study directional and horizontal wells to determine fluid composition in the wellbore for hydrodynamic and geophysical studies, drilling, and operating and injection wells. To determine the position of the tool in the well there is the sensor of deviation angle and the sensor of rotation the tool. 
The tool produces measurements from sensors at a specified equal time intervals. Information is recording in digital form in the internal non-volatile memory of the tool. As memory chips flash-memory is used that allows to save the information when you turn off the power source. After the measurement process data is read into the computer for processing and analysis. You can save data to your PC and transfer to other programs for data processing. Settings and calibration coefficients are saved in the tool memory. The tool does not require erasing the memory before starting record. After filling all the memory, recording starts from the beginning – "in a circle" or stops, depending on mode selected (by defaults recording stops). Due to the low current consumption, GEO-MCW may be in working condition (without replacement power sources) for a long time.
There is a cable-self-contained version, which works in conjunction with tool GEO-7.

 

Parameter Value
Capacitance water holdup channel (CWH)
The number of sensors 6
Measuring range from 0% to 60% of water content or from 0 units to 1units
Relative / absolute error 10% / ±0.1 unit
Temperature channel (T) (technological)
Measuring range, °C 0...+120
Number of bits of ADC 10
Absolute error, °C ±3
Time constant in liquid, min, not more 3
Deviation channel
Indication range from 0° to 180о
Absolute error ±3°
Rotation channel
Indication range from CWH #1 sensor position from 0 to 360о
Absolute error in position of the deviation angle 10°-170° ±5°
The limiting operational parameters
Pressure range, kgf/sq.cm 0...600
Temperature range, °C 0...120
Tool memory
Amount of memory of the tool to 8 650 752 bytes or 2 162 688 measuring points
Filling memory time from 1.25 day (time cycle 0.25 sec) to 3 128 days (time cycle 125 sec)
The time of storage of information 10 years
Number of write cycles in the internal memory 10000
Time parameters
Time cycle, sec 0.25-125
Delay time of writing of the tool, min 0-65000
Stabilization time of operating mode after power-up, min. 1
The error of the internal clock per day, sec, not more than +5
Power supply
Power source Battery 3.6V diameter 14mm length 50mm
The minimum voltage, which preserves the metrological characteristics of the tool, V 3,3
The current consumption in the storage mode, mkA, not more 50
Average consumption current in operating mode depends on the time cycle 1sec – 2.65mA
Software
Turn on/off the record mode (with delay) of the tool via PC  
View the real values of CWH, angles, voltage of power supply to test tool  
Set the time cycle from 0.25 sec to 125 sec, programming the mode of operation of the tool  
Display information with measurement data from the tool to a computer in any interval of work  
View data on the computer and output the data obtained in the selected range to the printer in numerical and graphic form  
Communication with PC USB2.0
The reliability of the tool
The average time between failures, h, not less 20000
The average restoration time, h, not more 4
Average lifetime, years 5
Size
Dimensions (when closed), not more 42х980mm
Weight, kg, not more than 5.2
Model Diame­ter, mm Pres­sure, MPa Tempe­rature, °C Description
GEO-MVA-42 MPa/°С4260, 80100, 120Channels: 6 CWH
GEO-MVU-42 MPa/°С4260, 80100, 120Channels: 6 CWH, opening sensor
GEO-MVA2-42 MPa/°С4260, 80100, 120Channels: 6 CWH, opening sensor, cable mode