MLT 300

The Mini Logging Tool (MLT300) is Reservoir Group’s compact version of a production logging tool and provides correlated data on depth, pressure, RTD temperature, CCL and flow.

All the benefits of a production logging tool in a compact modular designed package.

The Mini Logging Tool (MLT300) is Omega’s compact version of a production logging tool and provides correlated data on depth, pressure, RTD temperature, CCL and flow. It is designed to be a modular tool consisting of three main modules which are the platinum Resistance Temperature Detector (RTD) module, the Casing Collar Locator (CCL) module and the Pressure/Flow module.

The unique dual platinum RTD module provides a fast response and a high resolution temperature profile along the wellbore. The electromagnetic CCL module measures depth by sensing each casing/tubing collar joint and achieves this by measuring the change in electromagnetic field that occurs at each joint. The Pressure/Flow module is a dual purpose housing containing a calibrated Pressure Gauge and also accepts an externally mounted Fixed Caged Spinner (optional) or a Full Bore Spinner (optional). A calibrated pressure gauge (5 available pressure ranges) is inserted into the housing depending on the pressure range required for an application. The Fixed Cage or Full Bore Spinner can be attached for Flow measurement if required and depending on the application.

The MLT300 uses a field replaceable electronic Memory Module as the controlling module. The memory module is always connected to the top of the string. Any combination of CCL and/or RTD modules can be used below the memory module with a single Pressure/Flow module run at the bottom of the string. Only one Pressure/Flow module can be run in a string and always at the bottom. During field operations, memory modules can be changed out efficiently providing a virtually uninterrupted service. Whilst data is being retrieved from the first, a second survey can be performed immediately with a new memory module fitted to the string.

 

Features

  • A compact 1½" OD allows for data gathering where other Logging Tools can’t fit
  • Modular design means combinations of modules can be used simultaneously
  • Replaceable memory module allows for redeployment whilst retrieving data
  • Correlated tool depth using the electromagnetic CCL
  • Dual RTD’s increase the tools sensitivity to temperature change and provide a fast, high resolution temperature profile along the wellbore
  • Single external Pressure/Flow Housing is compatible with multiple calibrated modules, providing an accurate and economical tool for unique applications

 

Applications

  • Casing leak detection
  • Pressure build up or drawdown test
  • Production optimization
  • Slickline operations
  • Static flowing and build up survey
  • Temperature logging

 

 

mlt-300-mini-logging-tool

 Specifications

Pressure
Maximum external pressure Must not exceed sensor range or 15 ksi Max
Sensor range 5 options from 6 ksi to 25 ksi
Sensor type Piezo-resistive
Accuracy ± 0.050% FSO
Long-term stability
0.1% FSO
Drift
Less than 3 psi per year
Resolution
0.01 psi
Temperature
Sensor
Dual Platinum Resistant Temperature Detector
Maximum temperature Must not exceed sensor range or 177°C Max
Operating range
0 to 150°C or 15 to 177°C
Accuracy
± 0.1 °C
Repeatability
± 0.05 °C
Resolution
0.0001% FSO
CCL
Sensor
Electromagnetic Casing Collar Locator
Power
Battery type
CC type lithium
Operating voltage
3.2 to 3.6 V
Current 15 – 20 mA
Memory
Sampling interval 0.1 seconds to 1.82 hours
Program segments 31
Capacity
1,800,000 data sets
Record contents
Time, pressure, temperature, collars, spinner
Caged Spinner
Threshold Average 8 fpm in clear water
Maximum flow rate
500 fpm
Output
6 pulses/revolution
Maximum temperature
177°C
Maximum Pressure
25 ksi
Accuracy
0.125 rps
Full Bore Spinner
Threshold Average 8 fpm in clear water.
2.6 fpm at approx. 5.2 fpm² flowing acceleration
Maximum flow rate
500 fpm, 28000 bpd in 7"casing
Output
6 pulses/revolution
Maximum temperature
177°C
Maximum Pressure
25 ksi
Accuracy
0.125 rps
Casing range 4.5" to 7"