GEO-6 (Downhole Self-contained Combined Tool)

GEO-6 (Downhole Self-contained Combined Tool)

GEO-6 (Downhole Self-contained Combined Tool)

Purpose.

Downhole self-contained combined tool GEO-6 descends into the well on the wire and produces up to seven registration parameters (pressure PRES, temperature TEMP, gamma-rays GK, bottom flow-meter FLOW, additional upper flow-meter FLOW2 or capacitance water holdup VL, casing collar locator CCL, stream thermal indication STI).

One of the channels of the flowmeter can be reversible, i.e. to show the flow direction.

Information from the sensors is received in a block memory of the tool that stores data at all times during measurement. Tool powered by lithium batteries or accumulator.

For empowerment of GEO-6 additional module GEO-MS connects to the tool, which has additional channels such as capacitance water holdup, resistivity meter and thermometer.

Tool configuration can be different and depends on the number of channels, a range of pressure, a range of temperature and gas factor at work environment.

Binding the tool by depth can be produced by logging control system (SKK) or by a separate measurement depth unit (MU) with adapter MU-USB that connects directly to your computer.

The tool can be programmed to the different operating modes with selection of channels you need and set the delay of measurement, cycle and duration of each mode.

Upon the request it is possible to produce a tool with any combination of channels and with shortened length (for example combined with flow-meter).

Using the tool allows to:

  •  
  • to produce a study of injection wells in operation at a pressure of 20 MPa on the wellhead without stopping and emptying spout formation water;
  • study the well around the trunk, including the upper freshwater horizons;
  • receive geophysical material from the PC directly on the well;
  • you can to reduce the duration of the study wells by excluding works on depressurization and injection mode restore.

After lifting the tool the information is read into a PC, where you can see the processing of measurement on the screen. Further material is translated into the depth format (LAS) as a standard geophysical material. If necessary, all material is available to print in standard form.

Downhole self-contained combined tool GEO-6 has the certificate of conformity.

New features of the GEO-6:

  • No power switch, the stability of the tool to the power failure.
  • Tool modification with a diameter of 28 mm and the pressure of 400 kgf/sq.cm, 30/38 mm to 600 kgf/sq.cm, 38 mm at 800 kgf/sq.cm (optional) and the range of temperatures up to 150 °C.
  • Use the high capacity accumulator as a power source allows to work autonomously with all channels switched on (including GK and STI) not less than 10 hours. With STI switched off tool will work for 88 hours.
  • STI channel with indirect heat sensor can work as additional temperature sensor (with switched off STI heater).
  • Built-in power source monitor turns off power-consuming channels STI and GK of the tool in process of working of tool in write mode and prevents deep discharge of power supply. The recording for the other channels is not interrupted.
  • There is a possibility to connect a second top flow-meter. As a second flow-meter uses a standard flow-meter module.
  • It is possible to connect Caged(Open/Close) Fullbore Flowmeter
  • The possibility of restore the factory settings in case improper calibration or memory failure of the tool.
Parameter Value
The number of recording channels (parameters) from 1 to 7
Pressure channel
Measuring range, kgf/sq.cm 0-600, 0-800, 0-1000
Number of bits of ADC 16
The relative error, % +/- 0.15
Absolute error, kgf/sq.cm 0.6\ 0.9\ 1.2\ 1.5
Pressure resolution, % 0.0015
Pressure resolution,* kgf/sq.cm 0.006
* for range 0-400 kgf/sq.cm  
Temperature channel
Measuring range, °С 0...+100, 0...+120, 0...+150
Number of bits of ADC 16
Absolute error, °С 0.5
Temperature sensitivity, °С 0.003
Time constant, sec 1.5
Gamma-rays channel
Measuring range, microR/hour 0...50
Sensitivity, imp/min on 1 microR/hour, not less than 150
Relative error, % +/- 15
Casing Collar locator channel
Signal/noise ratio, not less than 5
Flow-meter channel
Measuring range common,* m3/day 3.6-6000
* the range depends on the diameter of the spinner and the construction of the flow-meter  
** available the tool GEO-6 with two flow-meter channels (top and bottom), both of the flow-meter can be removable from the tool and spinners can be different diameters  
Design options of flow-meters:  
РFlow-meter diameter 30 mm, 20 mm diameter polyamide spinner, range, m3/hour 3-250
Flow-meter diameter 38 mm, 27 mm diameter polyamide spinner, range, m3/hour 2-200
Open/close flow-meter diameter 38/110 mm (opened/closed), rubber spinner diameter 60 mm, range, m3/hour 0.5-50
Flow-meter diameter 115 mm, rubber spinner diameter 60 mm, range, m3/hour 0.5-100
Half-packer flow-meter diameter 115/67 mm (external/internal), rubber spinner diameter 60 mm, range, m3/hour 0.15-50
Thermal indication channel
Overheating sensor in still water, °С, not less than 1
Time constant, sec 3
Tool memory
Amount of memory of the tool 4 Mbytes or 308 955 points (with all channels), may be increased up to 8 Mbytes
The time of storage of information 10 years
Filling time memory (5 channels on), h 30
Number of write cycles in the internal memory 10 000
Time parameters
Cycle time (measurement period), sec 0.125-125
Delay time of writing of the tool, h Up to 255
Power supply
Power source 2 batteries CR123 1-1.5 Ah capacity (for work up to 120°C) or Accumulator 18650 2.2 Ah capacity (for work up to 95 °C) or 1 battery 10 Ah capacity (for work up to 150°C)
Delayed mode current consumption, mA, not more than 0.1
Current consumption in write mode with all enabled channels, mA, not more than 120
Current consumption in write mode when switched off STI channel, mA, not more than 20
Current consumption in write mode when switched off channels GK and STI, mA, not more than 5
Software
- turn off the record mode (with delay) of the tool via PC  
- view the real values of all channels to check tool  
- set record cycle  
- specifying different measurement programs (up to 16) with the ability to set different modes of operation of the tool (enable/disable individual channels, delayed switching on, duration of work and record cycle) within each program  
- output file standard LAS  
- communication with a computer COM, USB
Size
Length (with one flow-meter, without centralizer), mm 1160-2330
Diameter, mm 28-42
Weight, kg, not more than 8-12
Model Diame­ter, mm Pres­sure, MPa Tempe­rature, °C Description
GEO-6-28 MPa /°С2840, 6095Channels: T,P,GK,CCLL,STI,FLOW. Power source - accumulator
2840, 60100, 120, 150
GEO-6-30 MPa /°С3060, 8095Channels: T,P,GK,CCLL,STI,FLOW. Power source - accumulator
GEO-6-30 MPa /°С3060, 80100, 120, 150Channels: T,P,GK,CCLL,STI,FLOW. Power source - Battery
GEO-6-32 MPa /°С3260, 8095Channels: T,P,GK,CCLL,STI,FLOW. Power source - accumulator
GEO-6-32 MPa /°С3260, 80100, 120, 150Channels: T,P,GK,CCLL,STI,FLOW. Power source - Battery
GEO-6-38 MPa /°С3860, 8095Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - accumulator
GEO-6-38 MPa /°С3860, 80100, 120, 150Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - Battery
GEO-6-42 MPa /°С4260, 8095Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - accumulator
GEO-6-42 MPa /°С4260, 80100, 120, 150Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - Battery
GEO-6.1-42 MPa /°С4260, 80120, 150Channels: Т,Р,GK,LM,STI,FM,FM2. Power source - Battery (2 Blocks) , titanium sonde
GEO-6.2-38 MPa /°С3860, 8095Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - accumulator (2 Blocks)
GEO-6.2-38 MPa /°С3860, 80100, 120, 150Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - Battery (2 Blocks)
GEO-6.2-42 MPa /°С4260, 80120, 150Channels: T,P,GK,CCLL,STI,FLOW,FLO2. Power source - Battery (2 Blocks) , beryllium copper sonde